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Research on Ground Motion Parameter Correction in the Response Acceleration Method
(1 School of Civil Engineering and Architecture, Henan University, Kaifeng 475004;
2 Department of Bridge Engineering, Tongji University, Shanghai 200092)
Abstract In this paper, the interaction coefficient between structural deformation and free field distortion is used to correct the ground motion parameters in the response acceleration method, for approximately considering the influence of structures on ground motion parameters. The response acceleration method is therefore modified. In order to verify the applicability of this method, it is assumed that a typical circular shield tunnel is the benchmark model under certain geological conditions, and the response acceleration method, the modified method, and dynamic time-history method are then utilized to calculate the structural internal force under different degrees of lining stiffness. Results indicate the accuracy of the response acceleration method can be improved taken the time-history method as the reference, especially for the bending moment.
Abstract：
In this paper, the interaction coefficient between structural deformation and free field distortion is used to correct the ground motion parameters in the response acceleration method, for approximately considering the influence of structures on ground motion parameters. The response acceleration method is therefore modified. In order to verify the applicability of this method, it is assumed that a typical circular shield tunnel is the benchmark model under certain geological conditions, and the response acceleration method, the modified method, and dynamic time-history method are then utilized to calculate the structural internal force under different degrees of lining stiffness. Results indicate the accuracy of the response acceleration method can be improved taken the time-history method as the reference, especially for the bending moment.
DONG Zheng-Fang-1,
2 ,
WANG Jun-Jie-2
.Research on Ground Motion Parameter Correction in the Response Acceleration Method[J] MODERN TUNNELLING TECHNOLOGY, 2014,V51(1): 32-37
2014, Vol. 51 