Shaking Table Test and Numerical Simulation of Tunnel Side-crossing Box Foundation Frame Structure System
In this paper,based on a side-crossing,box-foundation frame structure of the project of Line 7 urban rail traffic in Zhengzhou city,a scaled model test on the indoor shaking table is carried out.With the help of the finite element software ABAQUS,the numerical modeling for different working conditions is done,and the results from the shaking table test are compared with the results from the numerical analysis to verify the results from the shaking table test.Then,based on the validated model,the seismic response characteristics of the side-crossing,box-foundation frame structure of the tunnel side is studied.The results show that:① The tunnel or box-foundation frame structure will reduce the natural frequency of the whole system;② The box-foundation frame structure will reduce the acceleration response of the tunnel structure,weaken the bending moment of the tunnel structure,but it has little effect on its sheer force of the structure itself;③ The tunnel structure will weaken the acceleration re-sponse and displacement response of the box-foundation frame structure.The box will change the propagation path of the seismic wave,and when the box-foundation frame structure is more than three stories,the acceleration re-sponse of the floor becomes more obvious with the increase of the number of the floors.
NETL
NSTL
万方数据
维普
