Evaluation of shield tunneling-induced structural response
LIU Xiangyong1, ZHANG Xin2,3*, WANG Jun1, ZHAO Taoning1, ZHU Xianfa1
1. Nantong Urban Rail Transit Co., Ltd., Nantong 226000, Jiangsu, China; 2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 3. Key Laboratory of Geotechnical and Underground Engineering of Minister of Education, Shanghai 200092, China
Abstract: In order to establish a fast, accurate and efficient evaluation method for the impact of shield construction on adjacent buildings, the principal strain based on angular distortion and lateral strain was selected as the evaluation index to assess the damage to the building. Numerical investigation was carried out to explore the interaction between the building and the ground, and the results showed that the bending stiffness and the axial stiffness had a significant influence on the angular deformation index of the building, while the horizontal strain index of the building was mainly affected by the axial stiffness. A calculation method of building deformation index considering the influence of the building was established, and DPI as a measure of the influence degree was introduced. A method for evaluating the influence of shield construction on adjacent buildings was presented, which considered the interaction between buildings and strata, and was convenient for engineering application. The results of the proposed evaluation method were in good agreement with the field observed data.
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2022, Vol. 4 
