Experimental study on seismic response of underground tunnel-soil-surface structure interaction system

Abstract More and more projects of underground structures undercrossing adjacent surface structures have emerged in recent years. The existence of underground structure influences the propagation of seismic wave, and the inertia effect of the surface structure affects both the seismic response of surrounding site and that of underground structures. Thus, the underground structure and near surface structure can be deem as an interaction system. In this paper, in order to investigate the law of seismic response of underground structure-soil-surface structure interaction system, a shaking table model test was designed and implemented. Based on the experimental results, the law of seismic response of such complex system was analyzed. Note that to overcome the limitation of the bearing capacity of shaking table and eliminate the distortion of soil-structure rigidity ratio, the sawdust soil was chosen to model the surrounding site soil. Test results showed that using sawdust soil as a model soil is feasible. Regarding the law of seismic response of interaction system, it was found that the existence of the tunnel structure has weakened the rigidity of the whole model, and therefore, the seismic response of surrounding soil was amplified. However, it was observed that the existence of the tunnel impeded the propagation of seismic wave to some extent and thus reduced the seismic response of the surface structure, especially for lower and medium floors. The existence of surface structure suppressed the seismic response of soil and underground structures. By comparing the test results under different earthquake excitations, it was shown that the seismic response of the system was affected by the type of seismic wave significantly.

[1]  Grigorios Tsinidis,et al.  Response characteristics of rectangular tunnels in soft soil subjected to transversal ground shaking , 2017 .

[2]  Jun Wu,et al.  Numerical study on the seismic response of the underground subway station- surrounding soil mass-ground adjacent building system , 2017 .

[3]  Wu Jun,et al.  Experimental Study on the Seismic Response of Subway Station in Soft Ground , 2017 .

[4]  Mohammad Hassan Baziar,et al.  Seismic ground motion amplification pattern induced by a subway tunnel: Shaking table testing and numerical simulation , 2016 .

[5]  Daniele Zonta,et al.  On the seismic response of shallow-buried rectangular structures , 2013 .

[6]  Kyriazis Pitilakis,et al.  Seismic behaviour of circular tunnels accounting for above ground structures interaction effects , 2014 .

[7]  George P. Kouretzis,et al.  Effect of Underground Structures in Earthquake Resistant Design of Surface Structures , 2007 .

[8]  Jing Guo,et al.  Influence of a subway station on the inter-story drift ratio of adjacent surface structures , 2013 .

[9]  G. Abate,et al.  Numerical modelling of the seismic response of a tunnel–soil–aboveground building system in Catania (Italy) , 2016, Bulletin of Earthquake Engineering.

[10]  Dimitri E. Beskos,et al.  3-D seismic response analysis of long lined tunnels in half-space , 1996 .

[11]  Dong-Soo Kim,et al.  Effect of underground tunnel on the ground surface acceleration , 2014 .

[12]  M. Kamalian,et al.  Seismic ground amplification by unlined tunnels subjected to vertically propagating SV and P waves using BEM , 2015 .

[13]  Chen Su,et al.  Shaking-table tests and numerical simulations on a subway structure in soft soil , 2015 .

[14]  Wei Chen,et al.  Shaking table test of a multi-story subway station under pulse-like ground motions , 2016 .

[15]  Haitao Yu,et al.  Multi-scale physical model of shield tunnels applied in shaking table test , 2017 .

[16]  Akira Tateishi.  A STUDY ON SEISMIC ANALYSIS METHODS IN THE CROSS SECTION OF UNDERGROUND STRUCTURES USING STATIC FINITE ELEMENT METHOD , 1995 .

[17]  Roberto Paolucci,et al.  Effect of underground cavities on surface earthquake ground motion under SH wave propagation , 2009 .

[18]  Birger Schmidt,et al.  SEISMIC DESIGN AND ANALYSIS OF UNDERGROUND STRUCTURES , 2001 .

[19]  Xiao Yan,et al.  Multi-point shaking table test design for long tunnels under non-uniform seismic loading , 2016 .

[20]  L. M Gil,et al.  Simplified transverse seismic analysis of buried structures , 2001 .

[21]  Meng-Lin Lou,et al.  Structure–soil–structure interaction between underground structure and ground structure , 2013 .

[22]  Daniela Boldini,et al.  Numerical modelling of the transverse dynamic behaviour of circular tunnels in clayey soils , 2009 .