Study of Non-uniform Seismic Response of Intercity Tunnels with Defective Shields
Leilei Shi *
North China University of Water Resources and Electric Power Zhengzhou, Henan 450045, China.
Donghong Xia
North China University of Water Resources and Electric Power Zhengzhou, Henan 450045, China.
*Author to whom correspondence should be addressed.
Abstract
Based on the structural viscoelastic boundary theory, considering the geological changes of the soil layer and depth of tunnel crossing, the dynamic time course analysis is carried out for the defective lined tube sheet structure under non-uniform seismic excitation, to obtain the force and deformation law of the whole tunnel structure as well as the defective section. Analyze the dynamic response of shield tunnel structure under non-consistent seismic excitation under the influence of tube sheet misalignment factors, summarize the intrinsic mechanism of the dynamic response of defective tunnel tube lining structure, identify the phenomena affecting lining junction damage, and refine the seismic safety evaluation method of defective lining structure.
Keywords: Shield tunnel, lining misalignment, non-uniform earthquake, disease, seismic performance