Analysis of the Deformation and Dynamics of High-Speed Railway Bridge Under the Coupling Effect of Shield Tunneling and Train Load

Author:

Xiao Jianhang12ORCID,Wang Xiaorui12ORCID,Huang Chunhui3,Zhang Zhao4

Affiliation:

1. College of Geosciences and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450046, P. R. China

2. Disaster Prevention and Mitigation, for Urban Underground Transportation Engineering, Henan Provincial Transportation Industry, Technology Innovation Center, Zhengzhou 450046, P. R. China

3. Zhengzhou Metro Group Co., Ltd., Zhengzhou 450000, P. R. China

4. Shanghai Tunnel Engineering Co., Ltd., Shanghai 200000, P. R. China

Abstract

In order to study the dynamic response of high-speed railway bridge and its deformation law under the coupling effect of vibration load and shield tunneling, a coupling model of shield tunneling and train load is established based on the actual case of tunneling under an adjacent bridge. The deformation characteristics and dynamic response of the bridge are investigated by analyzing the deformation under different tunneling conditions and train running speeds. The results show that the maximum disturbance of the original stress field around the bridge is caused when the shield penetrates to the near side of the bridge structure, at which time, the damping effect of the ground and bridge system on the vibration load is weakened, thus intensifying the dynamic response of the bridge system, and the additional deformation caused by the vibration load is the largest; the presence of train loads during the shield excavation slightly attenuates the differential settlement of the bridge, but increases the cumulative settlement of the bridge, in addition, the additional deformation of the bridge will increase with the increase of the train running speed; the additional deformation caused by the train load within 2[Formula: see text]m of the shield crossing on both sides of the bridge is large, so the construction should be avoided as much as possible when the train is running in this construction section.

Funder

National Natural Science Foundation of China

Publisher

World Scientific Pub Co Pte Ltd

Subject

Applied Mathematics,Mechanical Engineering,Ocean Engineering,Aerospace Engineering,Building and Construction,Civil and Structural Engineering

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Novel Phononic-Like Crystal Wave Barrier Structure for Vibration Isolation;International Journal of Structural Stability and Dynamics;2024-07-03

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