Готові списки джерел за темами / Bridge collapse assessment

Добірка наукової літератури з теми "Bridge collapse assessment"

Автор: Grafiati
Опубліковано: 14 березня 2023

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями

Оберіть тип джерела:

Зміст

Ознайомтеся зі списками актуальних статей, книг, дисертацій, тез та інших наукових джерел на тему "Bridge collapse assessment".

Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.

Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.

Статті в журналах з теми "Bridge collapse assessment"

1

Seyed Khoei, Amir, Reza Akbari, Shahrokh Maalek, and Alireza Gharighoran. "Assessment of Design and Retrofitting Solutions on the Progressive Collapse of Hongqi Bridge." Shock and Vibration 2020 (September 15, 2020): 1–13. http://dx.doi.org/10.1155/2020/4932721.

Повний текст джерела
Анотація:
In 2009, the Hongqi Bridge, a multispan reinforced concrete bridge located in Zhuzhou, Hunan Province, China, collapsed progressively in the form of domino, due to extreme effect of deck to pier, during demolition process of the bridge. In this study, progressive collapse of Hongqi Bridge was investigated using nonlinear dynamic analysis in the Applied Element Method, which has been proven as one of the best methods that can follow the collapse behavior of structures. Good agreements were obtained between numerical results and field observations as well as previously reported results. After verifying the bridge collapse procedure, the effects of different alternatives for superstructure and substructure systems on the progressive collapse procedure were investigated. In addition, application of restrainers at the connection of deck to abutment was studied as an effective solution in order to prevent collapse propagation and to minimize associated damages. The results of the study showed that all chosen methods and factors could be helpful and effective in the procedure of collapse propagation for this kind of bridge.
Стилі APA, Harvard, Vancouver, ISO та ін.
2

Yau, Nie Jia, and Hsien Ke Liao. "Indices for Fast Assessment of Bridge Condition in Taiwan." Applied Mechanics and Materials 752-753 (April 2015): 689–97. http://dx.doi.org/10.4028/www.scientific.net/amm.752-753.689.

Повний текст джерела
Анотація:
Developed in 2000, the Taiwan Bridge Management System (TBMS) is an internet-based, nation-wide bridge management system used by all of the bridge management agencies in Taiwan. Currently, the TBMS has an inventory of more than 24,300 bridges with 14 years of visual inspection data and maintenance records. The inspection data of each bridge are input into the TBMS at least once per two years. In order to have a fast assessment of bridge condition in resisting natural disasters and traffic loads, five indices are established in this research: (1) Degree of flood resistance (DF), (2) Degree of mudflow resistance (DM), (3) Degree of earthquake resistance (DE), (4) Degree of loads resistance (DL), and (5) Degree of collapse resistance (DC). Calculation of these five indices is based on the inventory and visual inspection data of each bridge without further thorough site investigation. These indices are used for screening or sieving bridges out of the TBMS inventory that are potentially vulnerable to natural disasters or traffic loads, thus maintenance efforts can be put on such bridges to improve the efficiency of bridge management.
Стилі APA, Harvard, Vancouver, ISO та ін.
3

Sokolović, Neda M., Milica Petrović, Ana Kontić, Suzana Koprivica, and Nenad Šekularac. "Inspection and Assessment of Masonry Arch Bridges: Ivanjica Case Study." Sustainability 13, no. 23 (December 2, 2021): 13363. http://dx.doi.org/10.3390/su132313363.

Повний текст джерела
Анотація:
The importance of masonry arch bridges as a traffic network element calls for a thorough analysis focused on both structural stability and loading capacity of these historical structures, considering the usage of these bridges in contemporary traffic conditions. This paper focuses on the analysis of longitudinal cracks in a single span masonry arch bridge to evaluate its influence on structural behaviour of the system. As longitudinal cracks do not necessarily present an inevitable collapse mechanism, analysis of the causes is crucial for evaluating the serviceability and functionality of the bridge investigated. The methodology is based on the following: literature review, observation of the stone bridge in Ivanjica, geological testing of the site, geophysical testing of the bridge, laboratory testing of mechanical characteristics of stone used for the bridge construction and biological analysis of the samples of implemented materials on the bridge. Finite element analysis of the bridge was conducted to define the causes of the longitudinal cracks. The 3D simulation model was based on the data collected through observation and experimental analysis. This paper provides extensive research on a single span masonry bridge, examining how different deterioration mechanisms, in conjunction, can lead to the appearance of cracks in masonry arch bridges and provide remedial measures accordingly.
Стилі APA, Harvard, Vancouver, ISO та ін.
4

Lei, Zheng Bao, Hai Liang Cheng, Mu Xi Lei, and Guo Bin Liu. "Research on Security of Bridge Crashed by Vessels in Xiangjiang Bridge." Applied Mechanics and Materials 204-208 (October 2012): 2119–22. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.2119.

Повний текст джерела
Анотація:
To study the ship collision security of Xiangjiang bridge, this paper base on the risk assessment criteria of the AASHTO guide. First of all, annual frequency of Xiangjiang bridge element collapse is calculated by using the method of AASHTO guide; Furthermore, the safety of the Xiangjiang bridge is evaluated in according to AASHTO Guide. Calculation and analysis results show that Annual frequency of Xiangjiang bridge element collapse is more than annual 0.0001.
Стилі APA, Harvard, Vancouver, ISO та ін.
5

Tan, Ji-Shuang, Khalid Elbaz, Zhi-Feng Wang, Jack Shui Shen, and Jun Chen. "Lessons Learnt from Bridge Collapse: A View of Sustainable Management." Sustainability 12, no. 3 (February 7, 2020): 1205. http://dx.doi.org/10.3390/su12031205.

Повний текст джерела
Анотація:
Bridge failure is one of the worst infrastructural disasters. This paper investigates the risk of bridge infrastructures in the view of sustainable management. Statistics on bridge failures from 2009 to 2019 in China show that most of these failures are related to anthropic factors. The collapse of the Zijin Bridge on 14 June 2019 in Heyuan City of Guangdong Province, China is used as a case to perform detailed analysis. Superficially, bridge collapse is a technical problem rather than a management problem. However, the deep reason for this kind of bridge failure may be due to the lack of sustainable management. In order to verify this point of view, both fault tree analysis (FTA) and strategic environmental assessment (SEA) for the bridge failure and later impact on society are conducted. According to the FTA results, the failure of the arch foot is the direct trigger of the Zijin Bridge collapse. Since a lack of real-time monitoring, risk assessment and other management issues are potential factors causing bridge collapse, strategic environmental assessment (SEA) is used to investigate the management issues related to the economy, culture, human health and environmental sustainability in more depth. The low total SEA result shows poor project management and a high safety risk. Finally, the specific managerial measures are proposed to improve the sustainability of infrastructures.
Стилі APA, Harvard, Vancouver, ISO та ін.
6

Guo, Xuan, Zheyu Zhang, and ZhiQiang Chen. "Mainshock-Integrated Aftershock Vulnerability Assessment of Bridge Structures." Applied Sciences 10, no. 19 (September 29, 2020): 6843. http://dx.doi.org/10.3390/app10196843.

Повний текст джерела
Анотація:
Seismic fragility analysis is often conducted to quantify the vulnerability of civil structures under earthquake excitation. In recent years, besides mainshocks, strong aftershocks have been often witnessed to induce structural damage to engineered structures, including bridges. How to accurately and straightforwardly quantify the vulnerability of bridges due to sequential mainshocks and aftershocks is essential for an efficient assessment of bridge performance. While recognizing the limitation of existing methods, this paper proposes a mainshock integrated aftershock fragility function model, which empirically encodes the effects of mainshocks and retains the simple form of traditional fragility curves. A pile foundation-supported bridge system is modeled considering seismic soil-structure interaction to demonstrate the proposed fragility model. Numerical examples show that the resulting fragility curves incorporate the initial value for the probability of collapse of the bridge system due to a mainshock and the effects of the variable aftershocks conditional on the mainshock. Statistical analysis confirms that the proposed model fits the simulated vulnerability data (e.g., seismic intensities of aftershocks and the response demands conditional a select mainshock ground motion) both accurately and robustly.
Стилі APA, Harvard, Vancouver, ISO та ін.
7

Zhang, Wei, Shuoyu Liu, Wenwen Luo, Liping Wang, Bo Geng, and Zhenxing Zheng. "A New Approach for Probabilistic Risk Assessment of Ship Collision with Riverside Bridges." Advances in Civil Engineering 2020 (November 16, 2020): 1–12. http://dx.doi.org/10.1155/2020/8357494.

Повний текст джерела
Анотація:
The configuration of riverside bridges, such as the spatial distribution, wading status, and ship accessibility of piers, is generally different from river-crossing bridges. Thus, the ship collision risk of riverside bridges cannot be assessed using conventional assessment methods applicable to river-crossing bridges. The aim of this paper is, therefore, to develop a new probabilistic method for assessing the risk of ship collision with riverside bridges. First, a fully probabilistic framework for assessing the ship-bridge collision risk is presented. Second, a new probabilistic hazard analysis model of ship collision with riverside bridges is proposed, based on a combined study of riverside bridge characterization and an improved yaw ship collision model. A simplified empirical model for evaluating ship-bridge collision force is then adopted, and the probabilistic distribution of the collision force is obtained based on Monte Carlo simulation. Furthermore, finite element simulation is conducted to estimate the collapse probability of piers. Finally, the method developed is applied to the probabilistic assessment of ship collision risk with riverside bridges located at Shabin Road, Chongqing, China. The results show that the risk of ship-bridge collision at Shabin Road is low to moderate. The example demonstrated indicates that the methodology introduced in this paper is capable of assessing the ship-bridge collision risk in a concise and rapid way.
Стилі APA, Harvard, Vancouver, ISO та ін.
8

Skokandić, Dominik, Anđelko Vlašić, Marija Kušter Marić, Mladen Srbić, and Ana Mandić Ivanković. "Seismic Assessment and Retrofitting of Existing Road Bridges: State of the Art Review." Materials 15, no. 7 (March 30, 2022): 2523. http://dx.doi.org/10.3390/ma15072523.

Повний текст джерела
Анотація:
The load-carrying capacity assessment of existing road bridges, is a growing challenge for civil engineers worldwide due to the age and condition of these critical parts of the infrastructure network. The critical loading event for road bridges is the live load; however, in earthquake-prone areas bridges generally require an additional seismic evaluation and often retrofitting in order to meet more stringent design codes. This paper provides a review of state-of-the-art methods for the seismic assessment and retrofitting of existing road bridges which are not covered by current design codes (Eurocode). The implementation of these methods is presented through two case studies in Croatia. The first case study is an example of how seismic assessment and retrofitting proposals should be conducted during a regular inspection. On the other hand, the second case study bridge is an example of an urgent assessment and temporary retrofit after a catastrophic earthquake. Both bridges were built in the 1960s and are located on state highways; the first one is a reinforced concrete bridge constructed monolithically on V-shaped piers, while the second is an older composite girder bridge located in Sisak-Moslavina County. The bridge was severely damaged during recent earthquakes in the county, requiring urgent assessment and subsequent strengthening of the substructure to prevent its collapse.
Стилі APA, Harvard, Vancouver, ISO та ін.
9

Selman, Mudhafer H. "Highway Bridge Load-Bearing Capacity Assessment Under Chinese and British Methodologies." Advanced Materials Research 378-379 (October 2011): 353–57. http://dx.doi.org/10.4028/www.scientific.net/amr.378-379.353.

Повний текст джерела
Анотація:
The purpose of assessment of structures is to check their adequacy for specific loading levels and to identify those bridges that have an unacceptable risk of failure, either in part or complete collapse, under extreme circumstances of loading and material condition [1]. In this study, a comparison was made between new Chinese bridge load-bearing capacity assessment method and The British Highway Agency method. Load-bearing capacity assessment results were generated for bridges super structure and analyzed for moment and shear load effect. Also the study included a comparison of the main component of load-bearing capacity calculation, factored live load, factored dead load, and factored capacity. The comparison shows that the British Method produced lower moment and shear bridges carrying capacity factor than Chinese Method.
Стилі APA, Harvard, Vancouver, ISO та ін.
10

Milillo, Pietro, Giorgia Giardina, Daniele Perissin, Giovanni Milillo, Alessandro Coletta, and Carlo Terranova. "Pre-Collapse Space Geodetic Observations of Critical Infrastructure: The Morandi Bridge, Genoa, Italy." Remote Sensing 11, no. 12 (June 12, 2019): 1403. http://dx.doi.org/10.3390/rs11121403.

Повний текст джерела
Анотація:
We present a methodology for the assessment of possible pre-failure bridge deformations, based on Synthetic Aperture Radar (SAR) observations. We apply this methodology to obtain a detailed 15-year survey of the Morandi bridge (Polcevera Viaduct) in the form of relative displacements across the structure prior to its collapse on August 14th 2018. We generated a displacement map for the structure from space-based SAR measurements acquired by the Italian constellation COSMO-SkyMed and the European constellation Sentinel-1A/B over the period 2009–2018. Historical satellite datasets include Envisat data spanning 2003–2011. The map reveals that the bridge was undergoing an increased magnitude of deformations over time prior to its collapse. This technique shows that the deck next to the collapsed pier was characterized since 2015 by increasing relative displacements. The COSMO-SkyMed dataset reveals the increased deformation magnitude over time of several points located near the strands of this deck between 12th March 2017 and August 2018.
Стилі APA, Harvard, Vancouver, ISO та ін.
Більше джерел

Частини книг з теми "Bridge collapse assessment"

1

Buyukozturk, Oral, and Tzu-Yang Yu. "A Novel Structural Assessment Technique to Prevent Damaged FRP-Wrapped Concrete Bridge Piers from Collapse." In Seismic Risk Assessment and Retrofitting, 127–41. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2681-1_7.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
2

Jiang, Xiaozhen, Mingtang Lei, and Yongli Gao. "Potential Karst Collapse Assessment Along a Bridge Foundation of High-Speed Rail, Anshan, China." In Engineering Geology for Society and Territory - Volume 5, 539–43. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-09048-1_104.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
3

Cheng, F. Y., and K. Y. Lou. "Assessment of a Bridge Collapse and its Design Parameters for Northridge Earthquake." In Post-Earthquake Rehabilitation and Reconstruction, 7–20. Elsevier, 1996. http://dx.doi.org/10.1016/b978-008042825-3/50004-1.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
4

Marcos, Bruno, João Gonçalves, Domingo Alcaraz-Segura, Mário Cunha, and João P. Honrado. "A satellite-based multi-dimensional approach to identify potential post-fire regime shifts in ecosystem functioning." In Advances in Forest Fire Research 2022, 58–66. Imprensa da Universidade de Coimbra, 2022. http://dx.doi.org/10.14195/978-989-26-2298-9_8.

Повний текст джерела
Анотація:
Wildfires can profoundly impact many aspects of matter flows and energy budgets in ecosystems. Exacerbated by projected shifts in climate, land use, and forest management, changes in fire regimes can lead to decreased ecosystem resilience, regime shifts, and ecosystem collapse. Thorough assessments of ecosystem resilience to wildfires are thus critical to bridge gaps between science, policy, and management. To that end, approaches based on ecosystem functioning offer an integrative view of ecosystem responses to wildfire-induced changes and provide quicker, quantifiable responses to disturbances that are more directly connected to ecosystem services. In that regard, satellite remote sensing can be employed to easily and frequently monitor multiple dimensions of ecosystem functioning over large areas and across time, and to evaluate ecosystem functioning resilience to wildfires. This study describes an approach for identifying potential regime shifts based on satellite-based surrogates of four key dimensions of ecosystem functioning: primary production, water content, albedo, and sensible heat. To that end, we classified the trajectories after wildfires in 2005, in NW Iberian Peninsula, for the 2000–2018 period, into five main types, using two metrics of medium-to-long term post-fire recovery. Then, we derived a synthetic indicator to analyse the overall “strength-of-evidence” of potential regime shifts across dimensions. Potential regime shifts were identified for each dimension of ecosystem functioning considered, with the main effects associated with the sudden removal of vegetation. For primary production, regime shifts may be linked to changes in land cover and use, as well as management. Changes in the concentrations of impervious and radiation-absorbing materials following wildfires may be responsible for regime shifts in water content and albedo, with loss of canopy moisture due to fire-related damage leading to vegetation mortality during post-fire recovery. On the other hand, regime shifts in sensible heat were less frequent, since wildfires tend to have transient effects on this dimension of ecosystem functioning. Overall, our results show that our approach successfully captured different patterns of post-fire recovery and resilience across multiple dimensions of ecosystem functioning. We argue that our approach can provide an enhanced characterization of ecosystem resilience to wildfires, and support the identification of potential regime shifts after such disturbances, ultimately upholding promising implications for post-fire ecosystem management.
Стилі APA, Harvard, Vancouver, ISO та ін.

Тези доповідей конференцій з теми "Bridge collapse assessment"

1

Ragni, Laura, Fabrizio Scozzese, Fabrizio Gara, and Enrico Tubaldi. "Dynamic identification and collapse assessment of Rubbianello Bridge." In IABSE Symposium, Guimarães 2019: Towards a Resilient Built Environment Risk and Asset Management. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/guimaraes.2019.0619.

Повний текст джерела
Анотація:
<p>This paper investigates the causes of failure of Rubbianello Bridge, a multi-span masonry arch bridge located in Central Italy, which suffered the collapse of two of the seven spans due to foundation scour during a very severe flood in December 2013 and the collapse of two more spans during another major flood event in 2016. An accurate nonlinear 3D model of the bridge is developed. The elastic properties of the model are calibrated based on both material tests and an experimental campaign carried out for the dynamic identification (in terms of vibration frequencies and modal shapes) via operational modal analysis of the remaining part of the bridge. A numerical simulation of the scour hole progression is performed in order to identify the collapse mechanism of the bridge under the first major flood and estimate the level of scour that caused the bridge failure.</p>
Стилі APA, Harvard, Vancouver, ISO та ін.
2

Bento, Ana Margarida, Andreia Gomes, Teresa Viseu, Lúcia Couto, and João Pedro Pêgo. "Assessment of Scour Risk in Hydraulic Infrastructures. A Bridge Case Study." In IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2022. http://dx.doi.org/10.2749/prague.2022.1366.

Повний текст джерела
Анотація:
<p>The scouring phenomenon can pose a serious threaten to bridge serviceability and users' safety, as well. In extreme circumstances, it can lead to the bridge's structural collapse. Despite efforts to reduce the scour's unfavorable effects in the vicinity of bridge foundations, this issue remains a significant challenge. Many uncertainties affect the design process of bridge foundations, namely the associated hydrological and hydraulic parameters. Past and recent flood records strengthen bridges' vulnerability by reducing scouring estimation uncertainties. Therefore, the present study applies a semi-quantitative methodology of scour risk assessmentto a Portuguese bridge case study, accounting for those uncertainties. The risk-based methodology comprises three main steps towards the assignment of the bridge's scour risk rating. The methodology constitutes a potential key tool for risk management activities, assisting bridge's owners and managers in decision-making.</p>
Стилі APA, Harvard, Vancouver, ISO та ін.
3

Mendoza, Carlos, José Matos, Neryvaldo Galvão, and Álvaro Viviescas. "Reliability based performance assessment of a roadway bridge under seismic actions." In IABSE Congress, Christchurch 2021: Resilient technologies for sustainable infrastructure. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2021. http://dx.doi.org/10.2749/christchurch.2021.0212.

Повний текст джерела
Анотація:
<p>External events represent the most common causes of bridge failure which could indicate distress, partial or total collapse (failure of all substantial parts of a bridge). One of the main environmental factors are earthquakes, which have a high impact on bridges due to irregularities presented in both substructure and superstructure and vulnerabilities acquired by the codes used in its design. This article presents a framework to obtain the reliability index of a bridge under seismic events, using response surface method and first order reliability method, based on random variables that affect the structure capacity (pushover analysis) and the seismic loads (peak ground acceleration). The bridge reliability of the case study is updated using visual inspection techniques. Results indicate that the vulnerable zone on the bridge is its shortest pier and the failure could occur due to high shear concentration in the hinge at the bottom of the pier.</p>
Стилі APA, Harvard, Vancouver, ISO та ін.
4

Ekuje, Friday T., and Boulent Imam. "Modelling Uncertainty for Scour Assessment of Bridge Piers." In IABSE Conference, Copenhagen 2018: Engineering the Past, to Meet the Needs of the Future. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2018. http://dx.doi.org/10.2749/copenhagen.2018.039.

Повний текст джерела
Анотація:
Bridge scour being the erosive action of flowing water removing bed material from bridge piers and abutments during floods is one of the major causes of bridge collapse. The scour prediction models used in scour assessment codes tend to be conservative as they have been developed in laboratory conditions, which are different from real observations. A number of scour prediction models, some of which being used in bridge codes, have been compared with field observations to understand their predictive capabilities. This kind of study is lacking for the scour codes used in the UK and more specifically the BD 97/12 code for scour assessment of highway bridges. Validation of code scour equations using field measurements can be used to ascertain their ability for accurate prediction. In this study, the BD 97/12 local scour model is compared with extensive field data available in a US database compiled in cooperation by the US Geological Survey, State highway departments and the Federal Highway Administration. Statistical tests are carried out to quantify the prediction errors associated with the use of the code model for different conditions, including pier type and bed material cohesion characteristics. Furthermore, by fitting distributions to the data, calibration of the BD 97/12 code can be proposed.
Стилі APA, Harvard, Vancouver, ISO та ін.
5

Valenzuela, Matías A., José M. Gonrall, Javier Ampuero, and Bryan Espinoza. "Proposal Based on the Social Assessment Methodology for a Scenario in which the Road Network Faces a Bridge Collapse. Case Study: Seminario Bridge, Chile." In IABSE Congress, Nanjing 2022: Bridges and Structures: Connection, Integration and Harmonisation. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2022. http://dx.doi.org/10.2749/nanjing.2022.1685.

Повний текст джерела
Анотація:
<p>In Chile several natural hazards (earthquakes, landslides, etc.) create high road structure vulnerability resulting in road disruption. One of these conditions can be exemplified by the collapse of a road bridge resulting in high human and economic cost.</p><p>The current Bridge Management System must provide comprehensive inspection, diagnosis and intervention (strengthening or repair) protocols, always with a limited budget. For that reason, the budget allocated to O&amp;M is usually reduced and has to be technically justified.</p><p>A tool to provide adequate decision-making is to know the direct and indirect costs associated with the collapse of the bridge and how this collapse impacts on the funding allocated to management activities.</p><p>This paper is a proposal based on the social assessment methodology to quantify the direct and indirect costs of a bridge collapse on a route that is critical for the Chilean road network, following the current social assessment methodology and applying it to a specific bridge. An analysis and comparison of the funding of inspection and monitoring is carried out. This analysis considers visual inspection, UAV, NDT and instrumentation of the bridge.</p>
Стилі APA, Harvard, Vancouver, ISO та ін.
6

Kolínský, Vojtěch, and Jan Žitný. "Analysis of the Florida International University Pedestrian Bridge Collapse." In IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2022. http://dx.doi.org/10.2749/prague.2022.1033.

Повний текст джерела
Анотація:
<p>The paper describes the investigation process of the collapse of the pedestrian bridge in Miami, Florida (USA). The main span concrete truss structure with a length of 174-foot (53 m) collapsed during construction onto the active highway beneath which had fatal consequences. FINLEY was approached to conduct an independent analysis of the bridge structure for one of the subcontractors involved with the project. As part of an analysis of the bridge behavior, detailed calculation models were developed, and advanced method of structural analysis were used. Finite element method (FEM) brick model of the entire span was created and the stresses at the failure area were investigated in detail. Computation FEM models were supplemented and verified by the strut and tie modelling (STM). The construction process and transport of the bridge span was also simulated. The analysis shows the issues and risks associated with the design of structures with a non-transparent flow of internal forces and demonstrates the need for a detailed assessment of joints and critical areas during all phases of the construction process. The results of the analysis were subsequently confirmed by later published investigation report of the US National Transportation Safety Board.</p>
Стилі APA, Harvard, Vancouver, ISO та ін.
7

Invernizzi, S., F. Montagnoli, and A. Carpinteri. "The Collapse of the Morandi’s Bridge: Remarks About Fatigue and Corrosion." In IABSE Symposium, Wroclaw 2020: Synergy of Culture and Civil Engineering – History and Challenges. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2020. http://dx.doi.org/10.2749/wroclaw.2020.1040.

Повний текст джерела
Анотація:
<p>On August 14, 2018, a few spans of the cable-stayed viaduct crossing the Polcevera river (Genoa, Italy) collapsed, causing tens of fatalities along with considerable material damage and hundreds of people displaced. The viaduct, as well as many others belonging to the national road network, was built in the second half of the last Century and has been in service for over fifty years. The bridge has experienced a dramatic increase in the heavy lorries traffic, together with degradation that developed much faster than expected due to the aggressive environment. In the present paper, a possible scenario is proposed to put into evidence how the combined effect of fatigue at very-high number of cycles and corrosion could have been responsible for the sudden failure of one of the strands and the subsequent collapse of the so-called balanced system conceived by the designer Morandi. Our purpose is to warn the scientific community and the public administrations about the combined effects of low amplitude cycle fatigue and corrosion, which can be dangerously underestimated in the safety assessment of last Century bridges asset.</p>
Стилі APA, Harvard, Vancouver, ISO та ін.
8

Liel, Abbie B., and Curt B. Haselton. "Lessons Learned from Seismic Collapse Assessment of Buildings for Evaluation of Bridge Structures." In Technical Council on Lifeline Earthquake Engineering Conference (TCLEE) 2009. Reston, VA: American Society of Civil Engineers, 2009. http://dx.doi.org/10.1061/41050(357)109.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
9

Salgado, Rafael A., Anish Sharma, and Serhan Guner. "A Two-Stage Strength Assessment Methodology for Deep Concrete Cap Beams." In IABSE Congress, New York, New York 2019: The Evolving Metropolis. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/newyork.2019.1720.

Повний текст джерела
Анотація:
<p>A significant portion of the nation’s aging bridge inventory consists of bridges with deep cap beams which were not designed to carry modern traffic loads. A strength assessment of these bridges is required for accurately predicting their load and deformation capacities. This paper proposes a two-stage strength assessment methodology for deep cap beams based on a nonlinear finite element analysis. To validate the finite element modeling approach, five pier caps experimentally investigated in the literature were analyzed. Crack patterns, load-displacement response, failure modes, and governing critical members were investigated under near collapse conditions. The complete proposed methodology was employed on a case study involving five existing bridges located in Ohio and the predicted capacities were compared with the traditional sectional and strut-and-tie methods. The proposed methodology has the potential to reduce the number of bridges found overloaded using traditional methods, resulting in significant cost savings.</p>
Стилі APA, Harvard, Vancouver, ISO та ін.
10

Simos, Nick, George Manos, Evaggelos Kozikopoulos, and Lambros Kotoulas. "ON THE ASSESSMENT OF THE PLAKA BRIDGE COLLAPSE USING NON-LINEAR ANALYSIS PREVENTABLE OR DOOMED?" In 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering Methods in Structural Dynamics and Earthquake Engineering. Athens: Institute of Structural Analysis and Antiseismic Research School of Civil Engineering National Technical University of Athens (NTUA) Greece, 2017. http://dx.doi.org/10.7712/120117.5430.18489.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Також вас можуть зацікавити розширені добірки на тему "Bridge collapse assessment" для конкретних типів джерел:
Статті в журналах
Ми пропонуємо знижки на всі преміум-плани для авторів, чиї праці увійшли до тематичних добірок літератури. Зв'яжіться з нами, щоб отримати унікальний промокод!

До бібліографії