Application of fiber-reinforced concrete lining for fault-crossing tunnels in meizoseismal area to improving seismic performance

被引：15
作者：
An, Dong [1 ]
Chen, Zheng [1 ]
Meng, Linghan [1 ]
Cui, Guangyao [1 ]
机构：
[1] North China Univ Technol, Sch Civil Engn, Beijing 100144, Peoples R China
来源：
ADVANCES IN MECHANICAL ENGINEERING | 2020年 / 12卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Fault-crossing tunnel; meizoseismal area; fiber-reinforced concrete; seismic performance;
D O I：
10.1177/1687814020944023
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The fault-crossing tunnel in meizoseismal area is directly subjected to strong ground motion, which leads to the failure of the tunnel lining. In order to improve the seismic safety of tunnel, fiber-reinforced concrete is applied to tunnel lining in this article. Taking the section of Zhongyi tunnel crossing Wanlong fault as an example, seismic performance of fiber-reinforced concrete tunnel lining was studied by finite difference numerical calculation software FLAC3D. The seismic displacement, stress response, and side wall convergence of secondary lining structures which are plain concrete, steel fiber-reinforced concrete, and steel-basalt hybrid fiber-reinforced concrete were comparatively analyzed. Moreover, the safety factor of each lining structure was investigated with the present numerical model. With the obtained data, seismic performance of steel-basalt hybrid fiber-reinforced concrete secondary lining is better than that of steel fiber-reinforced concrete secondary lining. The results may provide references for seismic design of fault-crossing tunnels in meizoseismal area.
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页数：10
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