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[1]LU Shasha,BAI Xiaoxiao,ZHANG Yanan,et al.Shaking Table Test and Numerical Simulation of Tunnel Side-crossing Box Foundation Frame Structure System[J].Journal of Seismological Research,2024,47(01):81-93.[doi:10.20015/j.cnki.ISSN1000-0666.2024.0033 ]

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Shaking Table Test and Numerical Simulation of Tunnel Side-crossing Box Foundation Frame Structure System

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: 47 Number of periods: 2024 01 Page number: 81-93 Column: Public date: 2023-11-20

Title:: Shaking Table Test and Numerical Simulation of Tunnel Side-crossing Box Foundation Frame Structure System

Author(s):: LU Shasha¹; BAI Xiaoxiao¹; ZHANG Yanan¹; MENG Wei¹; YUAN Di¹; XU Hong²; (1.College of Civil Engineering,Liaoning Technical University,Fuxin 123000,Liaoning,China)(2.Key Laboratory of Urban and Engineering Safety and Disaster Reduction,Ministry of Education,Beijing University of Technology,Beijing 100124,China)

Keywords:: underground tunnels; box-foundation frame structure; shaking-table test; numerical simulation; dynamic response

CLC:: TU317

DOI:: 10.20015/j.cnki.ISSN1000-0666.2024.0033

Abstract:: 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 response 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 response of the floor becomes more obvious with the increase of the number of the floors.

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Last Update: 2023-12-20