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

被引：0
|
作者：
Fei, Ruizhen [1 ,2 ]
Peng, Limin [1 ]
Zhang, Chunlei [2 ]
Zhang, Jiqing [2 ]
Zhang, Peng [2 ]
机构：
[1] Cent South Univ, Sch Civil Engn, Changsha 410075, Peoples R China
[2] China Railway Design Corp, Tianjin 300142, Peoples R China
来源：
GEOTECHNICAL AND GEOLOGICAL ENGINEERING | 2024年 / 42卷 / 03期
基金：
中国国家自然科学基金;
关键词：
High-speed railway tunnel; Shield tunnel; Tunnel settlement; Construction joints; CONSTRUCTION; DEFORMATION; EXCAVATION; CENTRIFUGE;
D O I：
暂无
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
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
收藏
页码：1871 / 1886
页数：16
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