[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.12814/jkgss.2019.18.1.011

Mechanical Mechanism of Main Tunnels and Cross Passage Construction - A 3D Numerical Investigation

Yoo, Chungsik (School of Civil and Environmental Engineering, Sungkyunkwan Univ. Natural Sciences Campus)
Shuaishuai, Cui (School of Civil Engineering, Shandong University Qianfoshan Campus)
Ke, Wu (School of Civil Engineering, Shandong University Qianfoshan Campus)
Qianjn, Zhang (School of Civil Engineering, Shandong University Qianfoshan Campus)
Zheng, Zhang (School of Civil Engineering, Shandong University Qianfoshan Campus)
Jiahui, Zhao (School of Civil Engineering, Shandong University Qianfoshan Campus)

Publication Information

Journal of the Korean Geosynthetics Society / v.18, no.1, 2019 , pp. 11-23 More about this Journal

Abstract

This paper presents the results of a three-dimensional numerical investigation into the mechanical mechanism of main tunnels and cross passage construction. Aimed at the complex space structure composed of two main tunnels and cross passage, 3D numerical model of the structure and surrounding rock was built to analyze the influence. Comparative analysis of different buried depths were carried out. The results of the study indicate that the stress concentration was occurred in the intersecting linings, especially in the opening side lining, which leads to an unfavorable form of force that is pulled up by the upper and lower sections in the intersecting linings due to the construction of the cross passage. The excavation of the cross passage also destroys the stability of the original soil layer and causes settlement of the surface and main tunnels. Practical implications of the findings are discussed.

Keywords

Subway; Cross passage; main tunnels; numerical simulation; construction mechanism;

Citations & Related Records

Reference

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