Seismic damage features of high-speed railway simply supported bridge–track system under near-fault earthquake

Guo, Wei; Gao, Xia; Hu, Peng; Hu, Yao; Zhai, Zhipeng; Bu, Dan; Jiang, Lizhong

doi:10.1177/1369433219896166

Cited by 41 publications

(10 citation statements)

References 22 publications

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“…The Effect of fling-step motion on seismic performance evaluated by some observations, two serious regions of the CFST arch where the arch foot is subjected to the buckling load tube tearing due to the initial compressive state of the arch rib under the gravity action and the strain index investigation has shown that the microscopic strain distribution significantly different than the macroscopic dynamic indices (Xin et al, 2019). Wei et al (2018), investigated the damager features of different main components in HSR Simply supported HSR Bridge under near fault earthquake, the results proved that the background excitations with high frequency motions produced nearly 90% of the pier displacement response, 80% of the sliding layer response, and 85% of the shear alveolar response and concluded that the sliding layer and the shear alveolar are the weakest components which leads to failure of the track system (Guo et al, 2020).…”

Section: Effect Of Near-fault Earthquake On Bridge Structuresmentioning

confidence: 97%

The High-Speed Railway Bridges Under Vehicle Moving Load And Near Fault Seismic Ground Motions – Review.

Vijayakumar

Qian

2021

J. build. mater. struct.

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All-time needs of maintenance of high-speed train system and its infrastructure safety are must all over the world. Nowadays, for the smooth running of HSR trains, most of the country depends on the HSR bridge structures, but there is still a lack of understanding of the behavior of structures under various factors like seismic and high speed moving load effects. To study the dynamic behavior of HSR bridges, it is important to consider the interaction of moving vehicle – Bridge structure – Ground surface showing that the different parameters involved in understanding the response of the structure. The main motivation of this study is to initiate a better understanding of the various parameters effects by those seismic and moving vehicles over the dynamic behavior of the HSR bridges. The effects of forwarding directivity pulses were considered to understand the behavior of HSR bridges against near-fault earthquakes, which can make a substantial impact on the seismic demand capacity of the moving vehicles and structures. The effects of high-speed moving vehicles over the HSR bridges to understanding the parameters involved in the dynamic behavior of the coupled system. This literature review can help the beginners and who initiate the study based on the dynamic behavior of high-speed railway bridges and their components under seismic and moving load effects.

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Section: Effect Of Near-fault Earthquake On Bridge Structuresmentioning

confidence: 97%

The High-Speed Railway Bridges Under Vehicle Moving Load And Near Fault Seismic Ground Motions – Review.

Vijayakumar

Qian

2021

J. build. mater. struct.

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“…There is a global tendency to use numerical models with high level of complexity and details to assess the comprehensive behavior of structures. Nevertheless, due to the high demand for computational resources, simplified models that consider concentrated plastic hinges (Guo et al, 2020; Zheng et al, 2015), as well as those that consider fiber elements (Chen and Li, 2020; Hassan and Billah, 2020; Su et al, 2020; Zhang et al, 2020), are well established. Although these simplified models allow numerical simulations with low computational cost, the applicability of simplified models to represent damage in RC elements needs to be deeply studied (Su et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Comparative nonlinear seismic analysis of an existing RC bridge designed with obsolete codes

Nanclares

Curadelli

2022

Advances in Structural Engineering

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The evolution of seismic design and calculation criteria for highway bridges has a direct influence on their structural behavior. This paper presents a nonlinear dynamic analysis using a detailed 3D finite element model of an existing bridge, with different design criteria for the column transverse reinforcement, according to code requirements of different times. The numerical model is able to simulate both the collapse of the structure and the generation of damage in its elements when subjected to extreme seismic actions. Through the numerical model, it is possible to represent the cyclic behavior of the concrete, and to evaluate the influence of the transverse reinforcement assigned to the column on the overall response of the bridge. The formation of plastic hinges is verified, as well as the identification of different collapse mechanisms.

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“…Moreover, the seismic analysis of the railway bridge-track system built on the mountainous topography needs to consider two negative effects: (i) the dynamic characteristics and seismic responses of adjacent spans of irregular bridges (such as different pier heights, different bridge types, etc.) are different due to various topographies [3,4]; (ii) the spatial variability effect of ground motion distribution caused by local site and irregular topography leads to different parameters of ground motion excitation at different pier locations [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Seismic analysis of high-speed railway irregular bridge–track system considering V-shaped canyon effect

Zhu

Tang

et al. 2021

Rail. Eng. Science

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To explore the effect of canyon topography on the seismic response of railway irregular bridge–track system that crosses a V-shaped canyon, seismic ground motions of the horizontal site and V-shaped canyon site were simulated through theoretical analysis with 12 earthquake records selected from the Pacific Earthquake Engineering Research Center (PEER) Strong Ground Motion Database matching the site condition of the bridge. Nonlinear seismic response analyses of an existing 11-span irregular simply supported railway bridge–track system were performed under the simulated spatially varying ground motions. The effects of the V-shaped canyon topography on the peak ground acceleration at bridge foundations and seismic responses of the bridge–track system were analyzed. Comparisons between the results of horizontal and V-shaped canyon sites show that the top relative displacement between adjacent piers at the junction of the incident side and the back side of the V-shaped site is almost two times that of the horizontal site, which also determines the seismic response of the fastener. The maximum displacement of the fastener occurs in the V-shaped canyon site and is 1.4 times larger than that in the horizontal site. Neglecting the effect of V-shaped canyon leads to the inappropriate assessment of the maximum seismic response of the irregular high-speed railway bridge–track system. Moreover, engineers should focus on the girder end to the left or right of the two fasteners within the distance of track seismic damage.

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Seismic damage features of high-speed railway simply supported bridge–track system under near-fault earthquake

Cited by 41 publications

References 22 publications

The High-Speed Railway Bridges Under Vehicle Moving Load And Near Fault Seismic Ground Motions – Review.

The High-Speed Railway Bridges Under Vehicle Moving Load And Near Fault Seismic Ground Motions – Review.

Comparative nonlinear seismic analysis of an existing RC bridge designed with obsolete codes

Seismic analysis of high-speed railway irregular bridge–track system considering V-shaped canyon effect

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