Prediction of plastic and fractured zone extent around deep circular tunnel subjected to spatial constraint effect

2021 ◽  
Vol 14 (20) ◽  
Author(s):  
Yi Yao ◽  
Hongpeng Lai ◽  
Qin Zhang ◽  
Yuyang Liu
Keyword(s):  
Spatial Constraint ◽  
Constraint Effect ◽  
Circular Tunnel ◽  
Fractured Zone ◽  
Deep Circular Tunnel

Design charts for a deep circular tunnel under non-uniform loading

1988 ◽  
Vol 21 (2) ◽  
pp. 119-137 ◽  
Author(s):  
Emmanuel Detournay ◽  
Christopher M. St. John
Keyword(s):  
Circular Tunnel ◽  
Uniform Loading ◽  
Design Charts ◽  
Deep Circular Tunnel

Evaluation of Seismic Simplified Methods for Deep Circular Tunnel

2011 ◽  
Vol 261-263 ◽  
pp. 1862-1866
Author(s):  
Zheng Fang Dong ◽  
Yi Chao Yao ◽  
Jun Jie Wang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Analytical Solution ◽  
Displacement Method ◽  
Circular Tunnel ◽  
Variable Theory ◽  
Soil Response ◽  
Complex Variable Theory ◽  
Spring Coefficient ◽  
Deep Circular Tunnel

Firstly several seismic simplified methods commonly used for deep circular tunnel are evaluated and the difficulties in response displacement method are pointed out. Then the analytical solution of soil spring coefficient and soil response of deep circular tunnel is derived from using complex variable theory of planar elastic theory based on pseudo-static hypothesis. The analytical solution has been verified by comparing its predictions with results from an analysis in finite element method. It is concluded that the analytical solution can be regarded as one feasible reference for the simplification of response displacement method.

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