Study on dynamic response of structures across ground fissures under non-uniform seismic

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (4) : 197-202.

Xiong Zhongming1, Wei Jun1,2, Guo Yalei1, Wang Bingrui1

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Abstract

The activity of ground fissures in Xi'an weakens gradually and tends to be stable. Taking the ground fissure f4 in Tangyan Road as the research object, the finite element type selection of the spanning ground crack structure was carried out. Various parameters of refined model in the structure across ground fissure were analyzed quantitatively by using ABAQUS software. Then, the 3D solid refined models of frame structure in common site and ground fissure site were established, which considered the position and quantity of rebar, and the calculated results were compared with the results of shaking table test for ground fissure. Based on the quantitative analysis of the displacement and displacement angle of the frame, the influence of the ground fissure on the frame structure under excitation of the non-uniform seismic is obtained. Calculation results show that the existence of ground fissure aggravated the damage of the superstructure during earthquake, and the seismic response of the structure is related to the type of earthquake, the intensity of the earthquake and the location of the floor. In addition , along with the increase of seismic intensity, the dynamic response of the ground fissure increased significantly.

Key words

ground fissure / numerical simulation / frame structure / non-uniform seismic

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Xiong Zhongming1, Wei Jun1,2, Guo Yalei1, Wang Bingrui1. Study on dynamic response of structures across ground fissures under non-uniform seismic[J]. Journal of Vibration and Shock, 2018, 37(4): 197-202

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