复杂艰险构造区铁路桥梁系统地震响应分析Part Ⅱ：SSI（土‒结构相互作用）影响

陈令坤; 翟晨程; 王璐; 陈雯昕; 朱利明; 王尧周; 张清华; 张楠; 李乔

doi:10.3799/dqkx.2022.046

Volume 47 Issue 3

Mar. 2022

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Article Navigation > Earth Science > 2022 > 47(3): 880-892

Chen Lingkun, Zhai Chencheng, Wang Lu, Chen Wenxin, Zhu Liming, Wang Yaozhou, Zhang Qinghua, Zhang Nan, Li Qiao, 2022. Seismic Response of Railway Bridges in Active Complex Tectonic Zones Part Ⅱ: Effects of SSI (Soil-Structure Interaction). Earth Science, 47(3): 880-892. doi: 10.3799/dqkx.2022.046

Citation:

Chen Lingkun, Zhai Chencheng, Wang Lu, Chen Wenxin, Zhu Liming, Wang Yaozhou, Zhang Qinghua, Zhang Nan, Li Qiao, 2022. Seismic Response of Railway Bridges in Active Complex Tectonic Zones Part Ⅱ: Effects of SSI (Soil-Structure Interaction). Earth Science, 47(3): 880-892. doi: 10.3799/dqkx.2022.046

Citation:

Chen Lingkun, Zhai Chencheng, Wang Lu, Chen Wenxin, Zhu Liming, Wang Yaozhou, Zhang Qinghua, Zhang Nan, Li Qiao, 2022. Seismic Response of Railway Bridges in Active Complex Tectonic Zones Part Ⅱ: Effects of SSI (Soil-Structure Interaction). Earth Science, 47(3): 880-892. doi: 10.3799/dqkx.2022.046

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Seismic Response of Railway Bridges in Active Complex Tectonic Zones Part Ⅱ: Effects of SSI (Soil-Structure Interaction)

doi: 10.3799/dqkx.2022.046

1.
College of Architectural Science and Engineering, Yangzhou University, Yangzhou 225127, China
2.
School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
3.
College of Transportation Engineering, Nanjing Tech University, Nanjing 210009, China
4.
SUTCG Railway Transportation Design Institute, Nanjing 210017, China
5.
School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China

Received Date: 2021-11-17
Publish Date: 2022-03-25

Abstract

Abstract

When constructing new railways in challenging tectonic zones, the influence of harsh situations like earthquakes on train traffic is increasingly being considered. With a time-domain solution approach, a numerical model of the coupled train-bridge-soil system is provided. In the poor geological development area, the elastic-plastic seismic response of the railroad train-bridge-soil coupled system is calculated using the p-y, t-z, and q-z curves. This means that bending the beam half-wave form reduces the inherent frequency of the coupled train-bridge-soil system, which is discovered to be the initial bending mode. After taking into account soil-structure interaction (SSI), the frequency components impacting the seismic response vary, and the frequency range widens as well as decreasing. The affecting frequency range is 1.8-2.0 Hz before SSI and 1.2-2.0 Hz after SSI, respectively. To design SSI, it is advised that the influence of vertical higher order vibration pattern should be addressed, since it varies from 4.576 Hz to 14.215 Hz before and after SSI consideration.
- soil-structure interaction,
- high-speed railway,
- nonlinear soil-pile-foundation model,
- Fourier analysis,
- seismic response,
- engineering geology

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References(40)

References

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