Dynamic Response of Utility Tunnel During the Passage of Rayleigh Waves

Abstract eng:
The dynamic response of the utility tunnel is studied when the Rayleigh waves is considered. First the free field response under the Rayleigh wave passage is analyzed and the numerical results agree well with the analytical results. Based on the research above, the approximate Rayleigh earthquake waves are put forward. Then using the fast transfer technique, the approximate Rayleigh earthquake wave field is obtained. The dynamic response of utility tunnel during the passage of Rayleigh waves is researched with commercial finite element software ABAQUS as a platform. The results reveal that the utility tunnel shows global bending deformation pattern and the amplitude at the top of the structure is about 1 multiply greater than the corresponding point at the bottom of the structure. To the shallow buried underground structures, Rayleigh waves can be the key factors to control the damage of the structures.

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