Journal articles on the topic 'Parking lots Design and construction Simulation methods'
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1
Kornilov, Sergey, Olesya Kopylova, Oleg Fridrihson, and Anastasiya Chetvergova. "Feasibility Methodology for the Placement and Parameter Definition of Parking Lots in an Urban Transport System." Bulletin of scientific research results, no. 2 (June 23, 2022): 92–103. http://dx.doi.org/10.20295/2223-9987-2022-2-92-103.
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Purpose: To study the impact of parking lot presence on an urban transport system. To consider the issue on the necessity to adjust existing approaches to parking location selection and on the possibility of simulation modeling while feasibility assessment of lots’ placement. To pursue the testing of developed methodology for feasibility evaluation of parking space placement for autos on the example of particular section of road network. Methods: Comparison of existing approaches to parking space placement and the approaches’ correction, simulation modeling of motor car parking lot formation, mathematical statistics methods when experiment results’ processing with a simulation model. Results: The influence of parking spaces on urban transport system is considered. Methods for feasibility assessment of car parking lot location have been proposed and simulation model has been developed allowing to determine the required number of parking places for being considered section of road network, to estimate an approximate cost of the facility construction and expected profit at the facility commercialization, as well as to forecast impact of changes’ results on traffic flow indicators. Practical importance: The proposed algorithm and methodology for assessing the feasibility of placement and for definition of main parameters for car parking lots can be used in the development of an urban transport system. The methodology use in conjunction with the developed simulation model allows at the selection stage of promising locations of parking lots to take into account a social significance, project recoupment, traffic situation on the selected section of road network and to investigate further impact of the created parking space on the parameters of traffic flow.
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Andreeva, Ludmila, and Ivan Muzykin. "MODERN ARRANGEMENT OF PARKING SPACE ON TRANSFER HUBS FROM THE VIEWPOINT OF UTILIZATION EFFICIENCY OF URBAN AREAS." Bulletin of scientific research results, no. 1 (March 17, 2017): 7–17. http://dx.doi.org/10.20295/2223-9987-2018-1-7-17.
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Objective: To analyze the efficiency of building multilevel automated garages on transfer nodes, to reveal problems, connected with normative-technical control of automated parking design. Methods: The comparison of fixed and variable costs on construction and maintenance of different types of multilevel parking – automated and ramp, built-in and detached, underground and located at ground level, consideration of foreign and long-term domestic experience of multilevel parking lots in transfer hubs. Results: The value of transfer hubs in the system of urban and passenger transport was discovered as well as, classification of transfer hubs was specified, from the viewpoint of urban planning, the emphasis was made on the significance of proper arrangement on the territory of transfer hubs, taking into account space economy principle and whether the transfer hub harmoniously fits into urban environment, the spheres of application of different types of car-parks were specified, the advantages of automated car-parks over the conventional flat and multilevel ramp car-parks were revealed, the analysis of costs on construction and maintenance of different multilevel car-parks was carried out, the conclusions were made on the use of automated car-parks in the conditions of transfer hubs, functional area of automated car-parks in transfer hubs was presented as well as the documents, reflecting the normativetechnical control of automated parking design, recommendations were given on implementation of automated parking construction technology in Russia. Practical importance: The obtained conclusions may be applied in the design of transfer hubs in the cities of Russia, especially in restrained urban conditions. The given normative-technical control documents will make it possible to improve automobile parking convenience. Propagation of mechanization and application of intelligence systems in parking facilities will provide considerable economic benefit.
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Kutsevych, Vadym. "Parking places built-into the lower ground floors of public buildings and structures. Architectural-planning and functional-technological requirements." Research and methodological works of the National Academy of Visual Arts and Architecture, no. 29 (December 17, 2020): 5–11. http://dx.doi.org/10.33838/naoma.29.2020.5-11.
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The rapid processes of global motorization, which Ukraine has not avoided, have a growing impact on various aspects of modern society, on the formation of a new urban environment and transport system. At the same time, to create favorable conditions for Ukraine's integration into the EU needs to address infrastructural issues: the systematic organization of facilities for storing cars in general in cities with the provision of their architecture- accessibility, versatility, economy, energy efficiency and more. First of all, this applies to the largest cities, where about 45% of the total urban population of the state live. An acute urban and transport problem is the problem associated with the allocation of areas for transport facilities: parking lots (garages), gas stations, service stations and other car service facilities. In the absence of free space, the cost of urban land increases. Based on this, there is an urgent need to develop modern methods and techniques that allow more efficient use of land resources. One of the possible methods of solving the problem of organizing parking lots is to build them into the lower floors of public buildings for various purposes. The generalization of foreign and domestic design and construction practices made it possible to determine that one of the first examples of built-in parking lots (garages) are two 60-storey residential and office centers in Chicago (USA) on the shores of Lake Michigan, called Marina City (1964). The construction of these centers gave impetus to the architectural and planning organization of buildings and structures for the rational solution of parking in the lower above-ground floors of residential buildings and public buildings and structures. The article summarizes foreign and domestic practice of designing and building such parking lots. It is determined that with a high density of buildings in Ukrainian cities, the method of embedding in the lower floors of public buildings and structures is developing. This reception will be in demand especially in the transition of vehicles to electric vehicles. At the same time, the analysis of domestic regulations on the placement of parking lots revealed the absence of provisions on the possibility of embedding them in the lower above-ground floors of public buildings and structures. However, in the CIS (Commonwealth of Independent States) countries and in the developed countries of the world, such provisions exist, which helps to increase the level of comfort of public services and allows rational and intensive use of the city. Based on the results of research and suggestions, it should be noted that the practice of design and construc- tion reveals the possibility of applying the existing requirements of current state building codes of Ukraine for underground garages, which should be extended and for car parks (garages) located on the lower above-ground floors of other buildings, in particular public buildings. This requires changes and additions to the current urban planning, typological and fire regulations, which are planned to be developed on the basis of this study.
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Rosa-Jiménez, Carlos, and Carlos Prados-Gomez. "SMART MULTI-FUNCTIONAL MICRO-HUB FOR NEIGHBORHOODS: SUSTAINABLE MOBILITY AND ENVIRONMENTAL RESTORATION INHIGH-DENSITY SOCIAL NEIGHBORHOODS." Architecture and Engineering 7, no. 4 (December 29, 2022): 36–48. http://dx.doi.org/10.23968/2500-0055-2022-7-4-36-48.
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Introduction: Outdoor parking lots have been a common and cost-effective solution for private mobility in European social housing districts built between the 1960s and 1980s, but this solution has significant, particularly environmental and spatial, impacts. The future of urban mobility requires changes to an electrified community model, based on shared vehicle fleets. Purpose of the study: We aimed to analyze the transport, social, and environmental improvements of a smart multi-functional micro-hub for neighborhoods — a theoretical proposal designed to facilitate the transition toward a decarbonized city. Methods: The literature is therefore reviewed and a case study of the city of Malaga is provided. Results: On the one hand, the findings show the environmental, economic, and spatial advantages of this model compared to traditional underground parking lots. On the other hand, the paper proposes the design characteristics that could be adopted by a particular type of buildings and their urban space. Finally, the paper discusses the implications of setting up a citywide network of micro-hubs and the ensuing benefits.
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Kofanova, Olena, and Oleksii Kofanov. "ECOLOGICAL PROBLEMS OF UNDERGROUND AND TERRESTRIAL URBANISTICS." JOURNAL of Donetsk mining institute, no. 1 (2021): 119–34. http://dx.doi.org/10.31474/1999-981x-2021-1-119-134.
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Purpose. The aim of the study is to predict the potential risk of urban air pollution by toxic components of exhaust gases of vehicles in terms of the underground and terrestrial urban planning, in particular, street canyons, underground pedestrian crossings, underground parking lots, etc. Methods. The following research methodology was used in the work: on the basis of space-time field observations of the intensity, density and speed of traffic flows, as well as using mathematical modeling methods it was proved that urban air pollution (of the roadside space, adjacent territories of well-type yards, underground infrastructure, etc.) by toxicants, which are components of vehicle engine emissions, remains at a high, often environmentally hazardous level, and therefore requires urgent development and implementation of the appropriate precautionary measures. Results. The analysis of problems of ecological safety of city objects of terrestrial (high-traffic roads, adjacent territories) and underground (underground pedestrian crossings, garages, parking lots) urbanistics allowed to reveal direct and indirect negative influences on air environment from emissions of motor vehicles; using mathematical modeling methods to predict the fields of concentration of major toxicants and identify areas of local emergency pollution in different weather conditions, identify the most unfavorable directions and wind speeds and assess the level of environmental hazards to human health (residents of houses located in the well-type yards, pedestrians, owners of underground garages (parking lots), tenants of parking spaces, etc.). Scientific novelty. The study revealed direct and indirect negative effects of the motor transport complex on the air environment of urban territories (objects of terrestrial and underground urbanistics), in particular, based on the use of mathematical modeling methods. The level of environmental danger to the health of urban residents has been assessed. Practical significance. The results of the study can be used in the design and construction of urban infrastructure, as well as to reduce the technogenic load on the environment and human health in existing objects of terrestrial and underground urbanistics and other city areas.
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Kysil, S. "Foreign experience of designing parking garages for storing electric vehicles." Research and methodological works of the National Academy of Visual Arts and Architecture, no. 27 (February 27, 2019): 5–10. http://dx.doi.org/10.33838/naoma.27.2018.5-10.
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The article describes the current trends of designing and constructing multi-storey parking garages for storing electric vehicles. It has already been established that at the present stage of technology development, traditional gas stations are transforming into charging stations, operating on solar batteries. These technologies incentivize searching for new design forms of buildings for storing motor vehicles with solar charging stations in their structure. This applies to both multi-storey and flat parking garages. The paper analyzes the existing foreign experience of designing multi-storey parking garages for storing and charging electric vehicles, and identifies their main functional planning features and technological methods of organization. The main attention is paid to the artistic and aesthetic side of the formation of these objects. Electric vehicles can be very energy efficient and clean, as long as they are charged using renewable electricity. However, they need to overcome some challenges, including short driving range, the high price, and the lack of a charging infrastructure. Today, many design solutions have been developed for storing electric vehicles. The simplest of them is the parking lot design with 1-2 parking spaces for storing and charging of electric cars. This parking lot has the appearance of an open area with markings and with an element of built-in charger. Design solutions of indoor tent parkings lots for storing electric cars are considered to be more practical and convenient in operation. The most frequent of them are with rectilinear construction and with curved awning design at their base. The absence of developed infrastructure is the most important problem in the development of environmentally friendly transport. For this reason the design solution of storage sites and electric charging stations plays an important role and will allow us to experience the potential of electric mobility, which is the future.
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Zhao, Ziyao, Yi Zhang, Yi Zhang, Kaifeng Ji, and He Qi. "Neural-Network-Based Dynamic Distribution Model of Parking Space Under Sharing and Non-Sharing Modes." Sustainability 12, no. 12 (June 15, 2020): 4864. http://dx.doi.org/10.3390/su12124864.
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In recent years, with the rapid development of China’s automobile industry, the number of vehicles in China has been increasing steadily. Vehicles represent a convenient mode of travel, but the growth rate of the number of urban motor vehicles far exceeds the construction rate of parking facilities. The continuous improvement of parking allocation methods has always been key for ensuring sustainable city management. Thus, developing an efficient and dynamic parking distribution algorithm will be an important breakthrough to alleviate the urban parking shortage problem. However, the existing parking distribution models do not adequately consider the influence of real-time changes in parking demand and supply on parking space assignment. Therefore, this study proposed a method for dynamic parking allocation using parking demand predictions and a predictive control method. A neural-network-based dynamic parking distribution model was developed considering seven influencing factors: driving duration, walking distance, parking fee, traffic congestion, possibility of finding a parking space in the target parking lot and adjacent parking lot, and parking satisfaction degree. Considering whether the parking spaces in the targeted parking lots are shared or not, two allocation modes—sharing mode and non-sharing mode—were proposed and embedded into the model. At the experimental stage, a simulation case and a real-time case were performed to evaluate the developed models. The experimental results show that the dynamic parking distribution model based on neural networks can not only allocate parking spaces in real time but also improve the utilisation rate of different types of parking spaces. The performance score of the dynamic parking distribution model for a time interval of 2–20 min was maintained above 80%. In addition, the distribution performance of the sharing mode was better than that of the non-sharing mode and contributed to a better overall effectiveness. This model can effectively improve the utilisation rate of resources and the uniformity of distribution and can reduce the failure rate of parking; thus, it significantly contributes to more smart and sustainable urban parking management.
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Li, Hongmin, and Lu Yan. "Research on Wuhan Sponge City Construction and Water Resumption System." E3S Web of Conferences 143 (2020): 01038. http://dx.doi.org/10.1051/e3sconf/202014301038.
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Pocket parks are small public spaces between building entities which are available to the public. It can be located in a city, suburb, or country. It has a small area and is relatively flexible. According to the characteristics of China's cities, this article puts forward methods and measures for the landscape reconstruction design of existing urban communities in China. The thesis takes a Residential area of a certain district in Wuhan as a design case. It discusses how to combine the landscape design of the existing community with the rainwater problem, the goals, principles and measures of the landscape reconstruction design of the existing community based on the sponge city concept are proposed. Using rainwater as a resource to collect, purify, store, and recycle, alleviate water shortages and urban flood disasters, and it summarizes the methods and strategies for landscape reconstruction design of existing communities. Finally, according to the problems in the residential area and the actual needs of residents, combined with the current conditions of the site, following the design principles of people-oriented and local conditions, the use of sponge city technology measures on the green landscape, roads and parking lots, rooftop landscape of underground garages, plants Matching and other specific reconstruction designs provide theoretical and design references for the application of the "sponge city" concept in the design of urban residential quarters.
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Zhang, Dingli, Guozhong Huang, Haoxuan Li, Qing Deng, and Xuehong Gao. "A Study of the Factors Influencing the Thermal Radiation Received by Pedestrians from the Electric Vehicle Fire in Roadside Parking Based on PHRR." Applied Sciences 13, no. 1 (January 2, 2023): 609. http://dx.doi.org/10.3390/app13010609.
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Electric vehicle (EV) fire accidents are caused by multiple factors, including the traffic conditions, parking environment and firefighting facilities, and are a typical public safety issue in cities. Owing to the lack of accurate and quick estimation methods for the EV fire analysis in roadside parking scenarios and their impacts, this study applied the solid flame model to simplify the determination of the dynamic turbulence characteristics of the EV fire flames and proposed a thermal radiation model of an EV thermal runaway combustion flame based on the peak heat release rate. Subsequently, the radiation accuracy of the model near the flame was verified by a simulation and a comparison with the point source flame model, where the safety threshold of the fire accident propagation was determined. Finally, the evacuation strategy for pedestrians in an EV fire was investigated based on the proposed model. From the results, the safe distance of adjacent vehicles and the cumulative value of the pedestrians affected by the thermal radiation of EV fires can be obtained under the influence of the environmental factors. The proposed model can be used to optimize the design of roadside parking lots and guide the formulation of pedestrian emergency plans during an EV fire.
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Griffin, Brent, and Jessy Grizzle. "Nonholonomic virtual constraints and gait optimization for robust walking control." International Journal of Robotics Research 36, no. 8 (May 23, 2017): 895–922. http://dx.doi.org/10.1177/0278364917708249.
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A key challenge in robotic bipedal locomotion is the design of feedback controllers that function well in the presence of uncertainty, in both the robot and its environment. This paper addresses the design of feedback controllers and periodic gaits that function well in the presence of modest terrain variation, without over-reliance on perception and a priori knowledge of the environment. Model-based design methods are introduced and subsequently validated in simulation and experiment on MARLO, an underactuated three-dimensional bipedal robot that is of roughly human size and is equipped with an inertial measurement unit and joint encoders. Innovations include an optimization method that accounts for multiple types of disturbances and a feedback control design that enables continuous velocity-based posture regulation via nonholonomic virtual constraints. Using a single continuously defined controller taken directly from optimization, MARLO traverses sloped sidewalks and parking lots, terrain covered with randomly thrown boards, and grass fields, all while maintaining average walking speeds between 0.9 and 0.98 m/s and setting a new precedent for walking efficiency in realistic environments.
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Baik, A. "FROM POINT CLOUD TO EXISTING BIM FOR MODELLING AND SIMULATION PURPOSES." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-5/W2 (September 20, 2019): 15–19. http://dx.doi.org/10.5194/isprs-archives-xlii-5-w2-15-2019.
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<p><strong>Abstract.</strong> Many BIM experts agree that employing BIM for new construction is an easy task. However, applying BIM to existing construction will be difficult but is more suitable for heritage buildings cases. These heritage buildings have unique façades and architectural vocabulary, which are of special interest. Furthermore, studying these architecture heritages require some advanced tools in order to understand and analyse their structure, components, and design. Relying only on traditional methods is not adequate, especially for architectural engineers and experts who need digital representations of architectural heritage in order to draw a complete image of any aspect of the project. Moreover, lots of these heritage architectural elements are not documented or provided in the digital architectural libraries, which in turn requires advanced and easy access methods and tools that can extract basic information professionally and explain the essence of heritage. BIM has emerged as an efficient solution that could possibly help in analysing architectural heritage through effective learning processes. Existing BIM is characterised by their ability to create and operate within a digital database of any existing by 3-D laser through scanning the building and transforming it into point-cloud as digital data, so that engineers and experts can work on existing and buildings via the BIM software. As with many heritage buildings in the world, many of the heritage buildings in the Historic district of Jeddah city, Saudi Arabia, face serious issues in terms of conservation, restoration, documentation, managing, recording, and monitoring of these valuable heritage buildings. Therefore, this paper will examine and evaluate the use of BIM in modelling and for simulation purposes, (e.g. structure and energy simulation) with regard to one of the existing heritage buildings in the Historic district of Jeddah.</p>
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So, Albert, and WL Chan. "A study of linear PMSM driven ropeless elevators." Building Services Engineering Research and Technology 40, no. 1 (September 3, 2018): 93–108. http://dx.doi.org/10.1177/0143624418797604.
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In recent years, buildings have become taller and wider. The conventional approach of one roped elevator car per hoistway seems increasingly impractical. The idea of ropeless elevators using linear motors was proposed more than 30 years ago, but it was merely treated as wishful thinking by the industry at that time due to lots of safety concerns. And discussion by the industry has mainly been qualitative in nature. In recent years, an international manufacturer announced the development of a prototype and the world's first installation may probably be open to public before the end of 2018. So far, academic studies have mainly focused on the study of linear motors with generic applications, while this paper focuses on the performance of the motor drive from an elevator's point of view. In this paper, we investigate the mechanism of the drive, and the linear permanent magnet synchronous motor and, by discretizing the equations of the full mathematical model, we fine tune the parameters and design suitable controllers. We evaluate its performance by computer simulation, based on the necessary kinematics of a real elevator, so as to arrive at some design guidelines. Finally, the most critical safety concern, i.e. free fall during a total power failure, is quantitatively studied by short circuiting all motor windings. Methods to achieve a reasonably constant and low descending speed, have been studied with parameters estimated analytically, and are verified by simulation. For the sake of illustrating the concept as an initial trial, simplified circuit models, controllers and sensors are all assumed as being ideal. It is hoped that this paper will stimulate the research interest of both the academic world and the industry, while the inclusion of more losses, armature reactions, and imperfections, etc., could be tackled in a further study. Practical application: The application of one roped elevator car in taller and wider buildings seems increasingly impractical. This paper considers the analysis of the application of ropeless elevators using linear motors focusing on the performance of the motor drive from an elevator's point of view. A basic mathematical framework is developed to study and design the controllers and drive of a multi-car elevator system by using linear permanent magnet synchronous motors with emphasis on the elevator performance as a whole system. The paper is aimed at stimulating research interest to drive the appropriate analysis and application of linear permanent magnet synchronous motor driven ropeless elevators.
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Brasse, Romain, Jonah Vennemann, Niklas König, Matthias Nienhaus, and Emanuele Grasso. "Design and Implementation of a Driving Strategy for Star-Connected Active Magnetic Bearings with Application to Sensorless Driving." Energies 16, no. 1 (December 29, 2022): 396. http://dx.doi.org/10.3390/en16010396.
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For decades, sensorless position estimation methods gained lots of interest from the research community, especially in the field of electric drives and active magnetic bearings (AMBs). In particular, the direct flux control (DFC) technique promises unique advantages over other sensorless techniques, such as a higher bandwidth, but on the other hand, it requires the coils to be connected in a star topology. Until now, star-point connections are rarely found on active magnetic bearings. In consequence, there is no known publication about the application of the DFC to an AMB to this date. In order to apply the DFC to an AMB, a star-point driving approach for AMBs must be developed beforehand. A star-connected driving approach, capable of driving a four-phase AMB, is proposed and validated against traditional H-bridges in a simulation. Further, the strategy is tested in a physical application and generalised for 4∗n phases. In terms of current dynamics, the simulation results can be compared to the well-known full H-bridge driving. The experiments on the physical application show that the actual current in the coils follows a reference with satisfactory accuracy. Moreover, the inductance measurements of the coils show a strong dependency on the rotor’s position, which is crucial for sensorless operation. A star-point connection delivers a satisfying response behaviour in an AMB application, which makes sensorless techniques that require a star point, such as the DFC, applicable to active magnetic bearings.
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Papán, Daniel, Daniel Ďugel, Zuzana Papánová, and Martin Ščotka. "Polymer Foam Concrete FC500 Material Behavior and Its Interaction in a Composite Structure with Standard Cement Concrete Using Small Scale Tests." Polymers 14, no. 18 (September 10, 2022): 3786. http://dx.doi.org/10.3390/polym14183786.
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This paper focuses on the investigation of the material properties of FC500 foam concrete. Innovation is very important for the solution of cast-in-place concrete forms in practice today. Part of its innovative construction application is the possibility of using foam concrete in a composite structure and the use of its mechanical properties in the load-bearing parts of civil engineering structures. The method of detecting the mechanical properties of foam concrete by using non-standard cantilever test is also innovative. Here, an advanced approach of modelling specimens using powerful computational systems based on the finite element method is used. This modern material is researched especially for its use in transportation structures. For its application, it is necessary to define its resistance to mechanical loads. The main content of the research consists of correlations between experimental measurements and analytical and numerical results. This is the principle of quasi-linear identification of the non-linear behavior of polymeric cementitious porous material during tests on specimens. The focus of the research is an extensive experiment: measurements of the deformation of the specimens until failure. The following methods were chosen to investigate the material properties: small cantilever test, standard tensile test and compression test. The cantilever test was performed for the individual components of the FC500 composite and cement concrete, but also as a compact composite. Numerical simulation models were developed to correlate the individual results in order to validate the uniaxial test results. The conclusions of the research led to the definition of standardized stress–strain diagrams of the FC500 material for compression and especially tension. This is a definition of the behavior of this polymer composite, usable for the development of numerical models of full-scale structures. The results of the research will be applied in the development of national standards for the use of advanced materials in transportation structures (cycle paths, parking lots, traffic playgrounds, lightly trafficked forest roads and trails, etc.).
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Kazemi, Mohsen, Saeed Yeganeh Salehpour, Farid Shahbaazy, Saeed Behzadpoor, Sasan Pirouzi, and Saeid Jafarpour. "Participation of Energy Storage-Based Flexible Hubs in Day-Ahead Reserve Regulation and Energy Markets Based on a Coordinated Energy Management Strategy." International Transactions on Electrical Energy Systems 2022 (September 9, 2022): 1–17. http://dx.doi.org/10.1155/2022/6481531.
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In order to increase energy efficiency, the energy hub is considered as a form of aggregator and coordinator of various resources and storage. With the optimal performance of resources and storage generators based on a proper energy management system, it is expected that hubs can gain financial benefits from energy markets and ancillary services. So, the paper presents the participation of networked energy hubs in day-ahead (DA) reserve regulation and energy markets, where the hub operator incorporates a coordinated energy management (CEM) strategy to manage power sources and energy storage devices within the hub. Hence, this problem maximizes the total profit of hubs in the DA energy and up and down reserve markets. Also, the problem is constrained by optimal power flow (OPF) constraints in gas, electricity, and thermal networks, reserve limits, and hub constraints, including the model of the combined heat and power (CHP), renewable energy source (RES), electrical/thermal storage, parking lots of electric vehicles (EVs), and boiler. Following that, a linear format is obtained for the nonlinear equation using traditional linearization methods so that an optimal solution is found in less time considering less computational error. Eventually, a standard case system is used to test the strategy, and thus, the capabilities of the approach are investigated. The obtained findings validate the potential of the proposed design in enhancing the economic situation of power sources and storage in hub form, which can enhance operation indices by optimal management of the hub so that the energy management of resources and storage in the form of a hub based on CEM compared to their independent management plan has been able to increase the profit of these elements in energy and up and down reserve markets by about 17%, 28%, and 15%, respectively. Regarding technical indices of energy networks, the proposed scheme by creating low energy losses in the gas network and providing pressure drop, overvoltage, and overtemperature within their permissible limits succeeded in reducing the energy losses in electricity and heat networks by about 83% and 38%, respectively, compared to power flow studies. Also, in these conditions, it has reduced the maximum voltage and temperature drop by 45% and 39%, respectively.
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Senkin, Nikolai A., Aleksandr S. Filimonov, Kirill E. Kharitonov, Vitaliy V. Yakovlev, Elizaveta O. Bondareva, Marina V. Merkulova, and Nikita E. Medvedev. "On the Creation of a High-Speed Transport Highway in St. Petersburg." Transportation Systems and Technology 5, no. 4 (December 24, 2019): 73–95. http://dx.doi.org/10.17816/transsyst20195473-95.
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As part of student research at the St. Petersburg University of architecture and construction, alternative proposals are being developed for the creation of a circumferential high-speed highway with a total length of 147.2 km. Тhe scheme is proposed in the form of a polygon with HUB in the nodes and consists of three main parts: 1 above-ground (62.6 km), 2 above-water (29.6 km) and 3 surface-underground (55.0 km). The main tracks are located in a four-tube steel beam, each tube of which is organized by the technology of vacuum tube transport with a pressure of 10% of the normal for high-speed passenger trains on a magnetic levitation cushion using a linear traction motor (Maglev system). The rail base of the 1520 mm gauge is located along the entire length of the track, both in parking lots, acceleration and braking zones, and on the main high-speed sections for movement with a maximum speed of 500 km per hour.
The main direction of research was the development of load-bearing structures that provide the necessary functionality, reliability and safety of structures. In order to reduce the noise impact on the metropolis, overcome numerous artificial and natural obstacles, improve anti-terrorist protection, the main level of the rail track for the above-ground and above-water structures was adopted at +88.00 in the Baltic elevation system. Calculations of variants with determination of internal forces in elements and movements of nodes with use of the program complex SCAD Office 21.1are executed, when accounting for the full range of loads taking into account dynamic effects and non-linearity. The selection of cross-sections of elements according to the method of limit states according to the current norms is carried out. The advantage of the arch-cable-stayed variant with a span of 360 m in strength, stability, stiffness and vertical size (height of supports) is shown.
The continuation of research and design work on this topic should lead to the emergence of a district high-speed transport system at the borders of communication between St. Petersburg and the Leningrad region with passenger traffic, quite comparable to the metro line.
Aim: To develop a district high-speed transport system at the borders of St. Petersburg and Leningrad region with passenger traffic comparable to the metro line.
Materials and Methods: Using the software package "SCAD Office 21.1", the trestle structures are calculated for the combination of operating loads, forces and influences, including the consideration of dynamic aspects and nonlinearity, as well as the selection of cross-sections of elements by the method of limit states. To determine the optimal trestle structures of high-speed highways, namely high-rise and long-length metal structures supporting the overpass beam, calculations with the selection of cross sections of four variants of cable-stayed systems (arch-cable-stayed; cable-stayed rod with inclined cables and steel lattice pylons; the same, steel pipe-concrete pylons; cable-stayed rod system with suspensions according to the patent US5950543 (A).
Results: the results of the trial design adopted arch-cable option with a span of 360 m according to the criterion of metal consumption, the consumption of steel amounted to 20.9 tons per 1 m length of highway.
Conclusion: the estimated volume of passenger traffic per day for the four-track high-speed line will be 280 thousand passengers, and 102 million passengers per year, which is quite comparable to this figure for the metro line.