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22 December 2021 Estimation of the ground surface settlement induced by the tunnel excavation in Changchun, China
Jian Lu, Jingjing Sun, Yang Shen, Wei Zheng, Aijun Yao, Xuan Zheng
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Proceedings Volume 12058, Fifth International Conference on Traffic Engineering and Transportation System (ICTETS 2021); 120582X (2021) https://doi.org/10.1117/12.2619647
Event: 5th International Conference on Traffic Engineering and Transportation System (ICTETS 2021), 2021, Chongqing, China
Abstract
This study investigates an estimation model of ground surface settlement caused by the excavation of tunnels with a horseshoe-shaped cross section. The ground surface settlement data of the construction of a subway line in Changchun was analyzed, and a model based on the simplified equation of the stochastic medium theory was established. The formula for parameter r(H) was modified. The parameters of the model were obtained by linear regression analysis of the ground surface settlement data. Based on the linear regression analysis results of the monitoring data, the distribution laws of the parameters in the model were obtained. The primary distribution range for tanβ in the Changchun area is 0.9-1.6, and the recommended value for ΔA is 8-22 mm (β is the angle between the slip surface and horizontal plane and ΔA is the uniform convergence value of the tunnel cross section). Further analysis of the proposed model indicates that with a good choice of parameters, a good estimate of the ground surface settlement can be obtained.
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Jian Lu, Jingjing Sun, Yang Shen, Wei Zheng, Aijun Yao, and Xuan Zheng "Estimation of the ground surface settlement induced by the tunnel excavation in Changchun, China", Proc. SPIE 12058, Fifth International Conference on Traffic Engineering and Transportation System (ICTETS 2021), 120582X (22 December 2021); https://doi.org/10.1117/12.2619647
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KEYWORDS
Stochastic processes
Data modeling
Statistical analysis
Reliability
Superposition
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