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- Title
Tunnel Deformation Characteristics Caused by Deep Buried Soft Rock under High Ground Stress.
- Authors
Yang MI; Shuli WANG; Hao LUO; Jiangbo XU; Zhonghe ZHANG
- Abstract
We study tunnel deformation characteristics caused by soft surrounding rock, and propose a research strategy based on nonlinear geometric deformation theory. Firstly, using as an example the Baojiashan super-long highway tunnel of Xi'an-An'Kang Expressway of Baotou-Maoming Line, we present field test procedure of axial stress for anchor bolts and relevant parameter setting of the experiment. Secondly, to overcome mistakes produced in the calculation of plane problem with large displacement by using classical small deformation theory, we use a coordinate system based on S-R Chen decomposition theory to build geometric equations of nonlinear large deformation, and consider changes in element edge in the deformed body to ensure energy conservation before and after element deformation. Finally, we verify the effectiveness of the proposed method through case analysis.
- Subjects
TUNNELS; NONLINEAR analysis; DEFORMATIONS (Mechanics)
- Publication
International Journal of Simulation: Systems, Science & Technology, 2016, Vol 17, Issue 40, p1
- ISSN
1473-8031
- Publication type
Article
- DOI
10.5013/IJSSST.a.17.40.39