Experimental and Numerical Studies of a Shield Twin Tunnel Undercrossing the Existing High-Speed Railway Tunnel

被引：0

作者：

Ruizhen Fei

Limin Peng

Chunlei Zhang

Jiqing Zhang

Peng Zhang

机构：

[1] Central South Universtiy,School of Civil Engineering

[2] China Railway Design Corporation,undefined

来源：

Geotechnical and Geological Engineering | 2024年 / 42卷

关键词：

High-speed railway tunnel; Shield tunnel; Tunnel settlement; Construction joints;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In order to study the influence of shield tunneling on existing high-speed railway lines. Combined with centrifuge test and three-dimensional numerical simulation, the dynamic response of shield tunnel undercrossing existing high-speed railway tunnel was studied, and the influence of settlement joint and steel pipe pile reinforcement on existing tunnel was analyzed. The results show that: (1) the construction joints of existing tunnels significantly reduce the shielding effect of existing high-speed railway tunnels on the ground; (2) The settlement value of the existing tunnel caused by double-line shield tunnel construction needs to be controlled by steel pipe pile reinforcement to meet the requirements of the specification; (3) The double-line shield tunnel construction has little effect on the internal force of the existing high-speed railway tunnel, and the reinforcement of the high-speed railway tunnel lining meets the stress requirements.

引用

页码：1871 / 1886

页数：15

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