Original scientific paper

https://doi.org/10.17559/TV-20151027082900

Evolution characteristics analysis of pressure-arch in a double-arch tunnel

Shu-ren Wang orcid.org/0000-0001-5490-2825 ; (1) School of Civil Engineering and Mechanics, Yanshan University, No. 438 Hebei West Street, Haigang District, Qinhuangdao, 066004, China / (2) Opening Laboratory for Deep Mine Construction, Henan Polytechnic University, 2001 Century Avenue, Jiaozuo, Hen
Chun-liu Li ; (1) School of Civil Engineering and Mechanics, Yanshan University, No. 438 Hebei West Street, Haigang District, Qinhuangdao, 066004, China / (2) Institute of Urban Construction, Hebei Normal University of Science & Technology, No. 360 Hebei West Street, H
Yong-guang Wang ; School of Civil Engineering and Mechanics, Yanshan University, No. 438 Hebei West Street, Haigang District, Qinhuangdao, 066004, China
Zheng-sheng Zou ; Opening Laboratory for Deep Mine Construction, Henan Polytechnic University, 2001 Century Avenue, Jiaozuo, Henan Province, 454003, China

Abstract

In order to provide a basis for the reinforcement design and construction safety of the double-arch tunnel, it is of theoretical and practical value to analyse the morphological characterization, the evolution process and the skewed effect of the pressure-arch in a double-arch tunnel. Based on the descriptions of the boundary parameters of the pressure-arch in a double-arch tunnel, taking the 80 m buried depth double-arch highway tunnel as the research object, the numerical calculation model of the double-arch tunnel was built by using FLAC3D, and then the morphological evolution of the pressure-arch induced by step-by-step excavation was analysed. The results showed that the pressure-arch of the double-arch tunnel displayed the skewed distribution characteristics which were gradually diminishing from the left tunnel to the right tunnel, the strain energy dissipation of the double-arch tunnel from the left tunnel to the right tunnel was from high to low, and the nonlinear response characteristics in different excavation sequences were sensitive to the changes of the stress state. The results provided a basis for the rock reinforcement design and safety construction of double-arch tunnel.

Keywords

double-arch tunnel; numerical calculation; pressure-arch; skewed effect; strain energy

Hrčak ID:

153170

URI

https://hrcak.srce.hr/153170

Publication date:

19.2.2016.

Article data in other languages: croatian

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