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

Zhu, Zhihui; Tang, Yongjiu; Ba, Zhenning; Wang, Kun; Gong, Weiping

doi:10.1007/s40534-021-00262-x

Cited by 13 publications

(7 citation statements)

References 35 publications

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“…Topography also plays a role in the earthquake effect results. Zhu et al [114] found neglecting the effect of V-shaped canyon leads to the inappropriate assessment of the maximum seismic response of the ( 7) 15 Schematic diagram of train-bridge system subjected to earthquake [107] irregular high-speed railway. It is well known that both track irregularities and seismic motions are random in nature.…”

Section: Effect Of Earthquake Excitationmentioning

confidence: 99%

A comprehensive review on coupling vibrations of train–bridge systems under external excitations

Xiang

Wang

et al. 2022

Rail. Eng. Science

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In recent years, high-speed railways in China have developed very rapidly, and the number and span of the railway bridges are keeping increasing. Meanwhile, frequent extreme disasters, such as strong winds, earthquakes and floods, pose a significant threat to the safety of the train–bridge systems. Therefore, it is of paramount importance to evaluate the safety and comfort of trains when crossing a bridge under external excitations. In these aspects, there is abundant research but lacks a literature review. Therefore, this paper provides a comprehensive state-of-the-art review of research works on train–bridge systems under external excitations, which includes crosswinds, waves, collision loads and seismic loads. The characteristics of external excitations, the models of the train–bridge systems under external excitations, and the representative research results are summarized and analyzed. Finally, some suggestions for further research of the coupling vibration of train–bridge system under external excitations are presented.

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Section: Effect Of Earthquake Excitationmentioning

confidence: 99%

A comprehensive review on coupling vibrations of train–bridge systems under external excitations

Xiang

Wang

et al. 2022

Rail. Eng. Science

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“…found that a V‐shaped canyon may significantly increase the seismic response of beams, piers and supports of a bridge with aid of the OpenSees software. Zhu et al 22 . also pointed out the necessity to consider the topography in estimating the seismic response of irregular railway bridge‐track systems in a V‐shaped canyon during the seismic design and analysis of a bridge by using a numerical model in the OpenSees.…”

Section: Introductionmentioning

confidence: 99%

“…Li et al 21 found that a V-shaped canyon may significantly increase the seismic response of beams, piers and supports of a bridge with aid of the OpenSees software. Zhu et al 22 also pointed out the necessity to consider the topography in estimating the seismic response of irregular railway bridgetrack systems in a V-shaped canyon during the seismic design and analysis of a bridge by using a numerical model in the OpenSees. Liu et al 23 proposed a hybrid boundary element and finite element method to investigate the stochastic seismic response of long-span bridges in a fluid-saturated poroelastic canyon.…”

Section: Introductionmentioning

confidence: 99%

Effect of a V‐shaped canyon on the seismic response of a bridge under oblique incident SH waves

Zhang,

Wang,

Zhang

et al. 2023

Earthq Engng Struct Dyn

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To elucidate the effect of canyon topography on dynamic response of a bridge, an analytical model for a simply supported bridge crossing a symmetric or non‐symmetric V‐shaped canyon in an elastic half‐space under SH waves is proposed. An exact solution to the dynamic canyon‐bridge interaction problem is derived using wave function expansion and verified by its comparison with past exact solution for a sole bridge model without a canyon. The wave propagation in the half‐space, wave scattering by the canyon and wave radiation from the bridge are all taken into account rigorously. Through a systematical parametrical study, it is found that the seismic response of the bridge beam and the wave‐facing side foundation will be significantly amplified. The degree of the topographic amplification is closely related to the geometry of the canyon, the mass and the stiffness of the bridge beam, and the frequency content and angle of the incident wave. The potential adverse effects of a V‐shaped canyon on a bridge should be considered in its seismic design.

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“…To reduce land coverage, the rule of "substituting a bridge for subgrade" is often adopted in the design and construction of high-speed railways. Bridges account for up to 70%-80% of the entire rail line in terms of length, and most are short-span bridges [1][2][3][4][5][6]. erefore, selecting the optimal earthquake resisting scheme for short-span bridges is crucial to maximizing the safety, serviceability, and economy of high-speed railways in high seismic intensity regions.…”

Section: Introductionmentioning

confidence: 99%

“…Meanwhile, the weight of the superstructure should be reduced to minimize the seismic response. Prestressed concrete (PC) simply-supported box beams are generally implemented for short-span bridges in China's high-speed railways [1][2][3][4][5][6], whereas reinforced concrete (RC) rigid frame bridges are adopted for Japanese Shinkansen railways on a large scale [7,8], and steel-concrete composite (SC) beams are often used in France [1].…”

Section: Introductionmentioning

confidence: 99%

Optimal Selection of Earthquake Resisting Schemes for Jakarta‐Bandung High‐Speed Railway

Quan

Lin

Liu

et al. 2022

Advances in Civil Engineering

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The Jakarta-Bandung high-speed railway is the first overseas project involving China’s high-speed railway. Owing to the high seismic intensity in this area, the optimal selection of earthquake resisting schemes is critical for short-span bridges, and such schemes are related to the safety and cost-effectiveness of the entire line. This study compares the safety and cost-effectiveness of four earthquake resisting schemes: (i) prestressed concrete (PC) simply-supported box beams using common spherical steel bearings; (ii) PC simply-supported box beams using seismic isolation bearings; (iii) steel-concrete (SC) composite simply-supported beams using seismic isolation bearings; (iv) reinforced concrete (RC) rigid frames. The results indicate that PC beams using more expensive seismic isolation bearings reduce the cost of the substructure, making it more cost-effective. In contrast, the scheme of SC composite beams is the most expensive one, and the associated maintenance costs are also the highest. Although the scheme of RC rigid frames is the cheapest among the evaluated schemes, it is only suitable for relatively stiff sites with low pier heights. Overall, PC beams with isolation bearings exhibit good seismic performance and are suitable for prefabricated construction; therefore, this scheme can be applied in various soil conditions with relatively low costs, and it is recommended for use throughout the entire Jakarta-Bandung high-speed railway.

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

Cited by 13 publications

References 35 publications

A comprehensive review on coupling vibrations of train–bridge systems under external excitations

A comprehensive review on coupling vibrations of train–bridge systems under external excitations

Effect of a V‐shaped canyon on the seismic response of a bridge under oblique incident SH waves

Optimal Selection of Earthquake Resisting Schemes for Jakarta‐Bandung High‐Speed Railway

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