Gotowe bibliografie tematyczne / PIER SPACING

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Gotowa bibliografia na temat „PIER SPACING”

Autor: Grafiati

Data publikacji: 11 września 2023

Data aktualizacji: 31 lipca 2025

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Artykuły w czasopismach na temat "PIER SPACING"

Sang, Liansheng, Jun Wang, Tiejie Cheng, Zhixing Hou, and Jueyi Sui. "Local Scour around Tandem Double Piers under an Ice Cover." Water 14, no. 7 (2022): 1168. http://dx.doi.org/10.3390/w14071168.

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Compared to the scour around a single pier, the local scour process around tandem double piers is much more complicated. Based on laboratory experiments in a flume, we conducted the scour process around tandem double piers under an ice-covered flow condition. The results showed that when the pier spacing ratio L/D = 2 (where L = the pier spacing distance, and D = the pier diameter), the rear pier (the downstream one) will intensify the horseshoe vortex process behind the front pier, and the scour depth around the front pier will increase by about 10%. As the pier spacing ratio L/D increases, t

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Rashno, Emad, Amir Reza Zarrati, and Mojtaba Karimaei Tabarestani. "Design of riprap for bridge pier groups." Canadian Journal of Civil Engineering 47, no. 5 (2020): 516–22. http://dx.doi.org/10.1139/cjce-2019-0007.

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Stable riprap size and optimized extension of the riprap layer around double and triple piers along the flow direction are studied experimentally. Results showed that the critical riprap failure area and stable riprap size around the first pier remain unchanged with increasing pier spacing. In addition, the largest stable riprap should always be placed in front of the first pier in comparison with the remaining downstream piers. However, by increasing the pier spacing, stable riprap size around the second and third pier increased and approached that around the first pier. A relationship was de

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Li, Zhicong, Jun Wang, Jueyi Sui, Tiejie Cheng, Peigui Liu, and Guowei Li. "Channel Bed Deformation around Double Piers in Tandem Arrangement in an S-Shaped Channel under Ice Cover." Water 15, no. 14 (2023): 2568. http://dx.doi.org/10.3390/w15142568.

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Flow structure and channel bed deformation caused by double piers in a tandem arrangement under ice-covered flow conditions in a bent channel is more complicated than those around a single pier in a straight channel. Based on experiments in an S-shaped flume, the scouring phenomenon at double piers in a tandem arrangement under an ice cover has been conducted by varying pier spacing distance, bend apex cross section (BACS), and hydraulic parameters. Results show that, under identical hydraulic conditions, the variation trend of the scour depth in the vicinity of double piers in a tandem arrang

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Qi, Hongliang, Tiangang Yuan, Wen Zou, Weiping Tian, and Jiachun Li. "Numerical Study on Local Scour Reduction around Two Cylindrical Piers Arranged in Tandem Using Collars." Water 15, no. 23 (2023): 4079. http://dx.doi.org/10.3390/w15234079.

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Local scour occurring near bridge piers has become a major problem all over the world, which has caused countless bridge damage events. Explorations regarding local scour reduction measurements have become a research hotspot in the field. Much effective research has been conducted on scour reduction for single piers. However, studies on local scour reduction around multiple piers that are arranged in tandem have rarely been reported. Therefore, the effect of the span and the local scour reduction measurement (collar) on the characteristics of the local scouring behavior around two piers arrang

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Hassan, Zahraa F., Ibtisam R. Karim, and Abdul-Hassan K. Al-Shukur. "Effect of Interaction between Bridge Piers on Local Scouring in Cohesive Soils." Civil Engineering Journal 6, no. 4 (2020): 659–69. http://dx.doi.org/10.28991/cej-2020-03091498.

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Local scour at the piers is one of the main reasons of bridge foundation undermining. Earlier research studies focused mainly on the scour at a single bridge pier; nevertheless, modern designs of the bridges comprise wide-span and thus group of piers rather than a single pier are usually used to support the superstructure. The flow and scour pattern around group of piers is different from the case of a single pier due to the interaction effect. Reviewing the literature of local scour around bridge piers group revealed that the local scour around bridge piers group founded in cohesive soil bed

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Dong, Shihao, Zhenhua Zhang, Zhicong Li, Pangpang Chen, Jun Wang, and Guowei Li. "Analysis of Local Scour around Double Piers in Tandem Arrangement in an S-Shaped Channel under Ice-Jammed Flow Conditions." Water 16, no. 19 (2024): 2831. http://dx.doi.org/10.3390/w16192831.

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The stability of bridge foundations is affected by local scour, and the formation of ice jams exacerbates local scour around bridge piers. These processes, particularly the evolution of ice jams and local scour around piers, are more complex in curved sections than in straight sections. This study, based on experiments in an S-shaped channel, investigates how various factors—the flow Froude number, ice–water discharge rate, median particle diameter, pier spacing, and pier diameter—affect the maximum local scour depth around double piers in tandem and the distribution of ice jam thickness. The

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Ye, Yasi, Xiaoping Liu, Yukang Ye, Anbin Li, Jiaqiang Zhang, and Qijiang Ren. "A Sensitivity Analysis of Ship–Bridge Spacing under the Coupling Effect of Turbulence and Ship Motion." Journal of Marine Science and Engineering 12, no. 8 (2024): 1308. http://dx.doi.org/10.3390/jmse12081308.

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The hydrodynamics of the flow around piers affects the motion of ships navigating near these structures, while the motion of the ships, in turn, affects the distribution of the flow field near the piers. This study investigates the forces exerted on a ship in various ship–pier transverse distances using commercial computational fluid dynamics (CFD) software, Fluent 13.0, based on the RNG k-ε model, complemented by experiments with a physical model. The interaction between the ship’s motion and the flow field near the piers was considered. The results indicate that during the encounter between

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M. Qasim, Rafi, Ihsan A. Abdulhussein, and Muna A. Hameed. "HYDRAULIC ANALYSIS OF COMPOSITE HYDRAULIC STRUCTURE CONSIDERING EXISTING OF PIRE." International Journal for Computational Civil and Structural Engineering 20, no. 2 (2024): 46–59. http://dx.doi.org/10.22337/2587-9618-2024-20-2-46-59.

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A composite hydraulic structure is used to solve the problems of sediment and floating materials, respectively. A pier (obstacle) is used at the downstream of the composite hydraulic structure to increase water depth, decrease flow velocity, and dissipate the flow energy. The paper deals with the effect of single pier and double piers on the hydraulic characteristics of the composite structure. Circular and square shapes are adopted in the study with different spacing measured from the downstream of the composite structure. The experiments reveal how the level of the hydraulic characteristics

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Song, Feihu, Jun Wang, Zhenhua Zhang, Tiejie Cheng, Guowei Li, and Jueyi Sui. "Local Scour around Side-by-Side Double Piers in Channel Bends under Ice-Covered Conditions—An Experimental Study." Water 15, no. 13 (2023): 2317. http://dx.doi.org/10.3390/w15132317.

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The pier scour process is normally intensified in the presence of an ice cover, which poses risks to the longevity and safety of bridges. In the present study, the impact of the densimetric Froude number, locations, and pier spacing of side-by-side piers on the local scour depth under ice-covered flow conditions were investigated based on clear water scour experiments in an S-shaped laboratory flume. The results demonstrated that the local scour at piers along the convex bank was more substantial than that along the concave bank when other factors stayed identical. The densimetric Froude numbe

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Li, Zhonglin, Zhenhua Zhang, Jueyi Sui, and Jun Wang. "Experimental Assessment of Scour Around Side-by-Side Double Piers in an S-Shaped Channel with Ice-Jammed Flow." Water 17, no. 12 (2025): 1768. https://doi.org/10.3390/w17121768.

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Through laboratory experiments in an S-shaped channel, this study analyzes how the flow Froude number, the ratio of ice-to-flow rate, pier spacing-diameter ratio, and bed material median grain size influence scour depth around side-by-side double piers under ice-jammed flow conditions. Unlike the development of a scour hole around a bridge pier in a straight channel, where the scour depth increases with the flow Froude number under ice-covered conditions, this study reveals that in an S-shaped channel, scour depth increases with the flow Froude number near the convex bank pier and decreases ne

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Rozprawy doktorskie na temat "PIER SPACING"

DEVI, GEETA. "SCOURING AROUND A GROUP OF PIERS." Thesis, 2023. http://dspace.dtu.ac.in:8080/jspui/handle/repository/19770.

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Scour is caused by the erosive action of flow of water, which erodes and takes away sediments from the river bed, as well as from the area of bridge piers and abutments. This process of scour is well-known for its complicated behaviour, and this process becomes more complex for the group of piers. As per the literature available, scour is a major contributor for the collapse of the bridge structures. Hence it becomes essential for the researches to predict the scour depth accurately. To fulfill this necessity, the deep understanding of the flow-field around the piers and factors af

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Części książek na temat "PIER SPACING"

Song, Tingting, Xi Shi, Hu Tao, Qianwen Jin, and Yuanshun Huo. "Study on The Influence of Spacing Between Bridge Piers on the Water Flow Characteristics in a 90° Curved Channel." In Advances in Engineering Research. Atlantis Press International BV, 2025. https://doi.org/10.2991/978-94-6463-688-8_22.

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Streszczenia konferencji na temat "PIER SPACING"

Han, Liuyuanzhi, and Xiao Ding. "A Low-cost Large Element Spacing Beam Scanning Antenna Array Based on Multilayer Dielectric Lens." In 2024 Photonics & Electromagnetics Research Symposium (PIERS). IEEE, 2024. http://dx.doi.org/10.1109/piers62282.2024.10618627.

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Adams, Michael T., Kanop Ketchart, and Jonathan T. H. Wu. "Mini Pier Experiments: Geosynthetic Reinforcement Spacing and Strength as Related to Performance." In Geo-Denver 2007. American Society of Civil Engineers, 2007. http://dx.doi.org/10.1061/40909(228)10.

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Xie, Wei, Qingtian Su, and Yong Zhang. "Research on the Layout of Temporary Piers of Large-span and Super- Width Steel Box Girder during Incremental Launching Construction." In IABSE Congress, Nanjing 2022: Bridges and Structures: Connection, Integration and Harmonisation. International Association for Bridge and Structural Engineering (IABSE), 2022. http://dx.doi.org/10.2749/nanjing.2022.1449.

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<p>It is difficult to understand the mechanical performance of large-span and super-width steel box girder during the incremental launching construction, and it varies with the number of temporary piers. Combined with the engineering example of Qilu Yellow River Bridge in Jinan, this paper conducts research on the layout of temporary piers. Firstly, stress envelope of main girder and maximum support reaction forces under different layout schemes are analyzed with the frame model. Then, the local plate-shell model is used to obtain stress distribution of main plates and local stability of

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Adopley, Jacob. "A new technique to suppress grating lobes beyond full wavelength element spacing for linear arrays." In 2017 Progress In Electromagnetics Research Symposium - Spring (PIERS). IEEE, 2017. http://dx.doi.org/10.1109/piers.2017.8262332.

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Adopley, Jacob. "Effect of Mutual Coupling within Elements of Array-Units Beyond Full Wavelength Element Spacing for Linear Arrays." In 2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama). IEEE, 2018. http://dx.doi.org/10.23919/piers.2018.8597998.

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Chaskar, Nayana, Sneha Dalvi, Sandip Rathod, Anjali A. Chaudhari, and Rajiv K. Gupta. "Effect of dimension, spacing, periodicity and shape of RIS on resonant frequency and bandwidth of 2 × 2 antenna array." In 2016 Progress in Electromagnetic Research Symposium (PIERS). IEEE, 2016. http://dx.doi.org/10.1109/piers.2016.7735552.

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Woll, Alex, Guanlan Liu, and Zhuoran Zhang. "Risk Modeling for Rupture Mitigation Valve." In 2024 15th International Pipeline Conference. American Society of Mechanical Engineers, 2024. https://doi.org/10.1115/ipc2024-129992.

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Abstract Per PHMSAs recent additions to 192.935 (c), if an operator determines that a Rupture Mitigation Valve (RMV) would be an efficient means of adding protection to their High Consequence Areas (HCAs) then they must install them. In order to determine if an RMV would be an efficient means of adding HCA protection, a risk analysis approach must be devised which considers the impacts of installing additional RMVs. RMV installation can improve both failure response time and valve spacing, both of which have an impact on the total time that a rupture with ignition can be sustained. PHMSAs defi

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Olonkins, Sergejs, Igors Stankunovs, Dmitrijs Pilats, and Vjaceslavs Bobrovs. "Suppression of CC-FWM inter-channel crosstalk using unequal channel spacing in an 8-channel WDM transmission system with parametric amplification." In 2017 Progress In Electromagnetics Research Symposium - Spring (PIERS). IEEE, 2017. http://dx.doi.org/10.1109/piers.2017.8262032.

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Raporty organizacyjne na temat "PIER SPACING"

Ko, Yu-Fu, and Jessica Gonzalez. Effects of Low-Cycle Fatigue Fracture of Longitudinal Reinforcing Steel Bars on the Seismic Performance of Reinforced Concrete Bridge Piers. Mineta Transportation Institute, 2024. http://dx.doi.org/10.31979/mti.2024.2328.

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Earthquakes, which can cause tremendous local stress and strain on infrastructure, can cause reinforced concrete (RC) bridges to collapse due to the concrete cracking and fracture of the steel reinforcement rebars. The fracture of longitudinal reinforcing steel due to low-cycle fatigue is one of the main causes of failure in RC structures under earthquake loading. The purpose of this research is to include the effects of low-cycle fatigue fracture of longitudinal reinforcing steel bars on the seismic performance of reinforced concrete bridge piers. To obtain a greater understanding of low-cycl

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