Seismic response analysis of the subway station structure under the coupling action of P and S seismic waves with the time difference

PAN Tingting; HU Xueping; REN Tianxiang; XU Bo

doi:10.12090/j.issn.1006-6616.2022028

Volume 28 Issue 4

Aug. 2022

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Article Navigation > Journal of Geomechanics > 2022 > 28(4): 596-604

PAN Tingting, HU Xueping, REN Tianxiang, et al., 2022. Seismic response analysis of the subway station structure under the coupling action of P and S seismic waves with the time difference. Journal of Geomechanics, 28 (4): 596-604. DOI: 10.12090/j.issn.1006-6616.2022028

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Seismic response analysis of the subway station structure under the coupling action of P and S seismic waves with the time difference

doi: 10.12090/j.issn.1006-6616.2022028

1.
School of Architectural Engineering, Zhengzhou University of Industrial Technology, Xinzheng 451100, Henan, China
2.
Shandong Institute of Geological Survey, Jinan 250014, Shandong, China
3.
Chinese Academy of Geological Sciences, Beijing 100037, China

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the China Geological Survey DD20211314

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Abstract

Abstract

Ground motion records of Beijing from the Tangshan earthquake was selected as the seismic input, and then the seismic simulation of a three-layer and three-span subway station with a rectangle cross-section in Beijing was carried out using the finite difference procedure. The variation law of dynamic acceleration, displacement amplification effect and dynamic stress of the subway station structure under the coupling action of P and S seismic waves with time difference was discussed. It is shown that, the process of impact on dynamic response and stress of the typical subway structure could be clear, which is, firstly, the P wave makes the station structure gain the largest vertical acceleration, and then, the structure gains the largest horizontal acceleration and stress through the coupling action of P and S seismic waves with the time difference, and finally, as the seismic force gradually reduces to disappear, the structure restore stability. The amplification effect of parameters in the dynamic response of the structure showed that the amplification coefficient of the side wall and column structures increases gradually from bottom to top and the amplification coefficient of the vertical acceleration is much larger than that of the horizontal acceleration. As the P wave can cause a large vertical acceleration and strong amplification effect, particular emphasis should be placed on the vertical anti-seismic performance of underground structures near the source. The structure gains the largest horizontal acceleration and tension stress under the coupling action of P and S seismic waves with the time difference, which is the key factor in structure destruction.
- underground structure,
- P and S seismic waves,
- numerical simulation,
- coupling action with time difference,
- seismic response

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Seismic response analysis of the subway station structure under the coupling action of P and S seismic waves with the time difference

doi: 10.12090/j.issn.1006-6616.2022028

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Seismic response analysis of the subway station structure under the coupling action of P and S seismic waves with the time difference

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