In this paper, the general finite element analysis program ANSYS is adopted to analyze the 3D finite element model of adjacent highrise and multistoried buildings-pile-soil dynamic interaction system. In the model, the soil parameters are based on the characteristics of Shanghai soft soil, and the adjacent upper structures are two frame structures, which had 12 stories and 5 stories respectively. Through comparing the simulation results of this particular dynamic cross interaction system with those of single structure and two identical structures, some useful conclusions were obtained.
The ABAQUS software was used to establish an actual soil layers-tunnel model in which the infinite element boundary was adopted. Then, frequency domain analyses were conducted on the model under vertical train loads with different frequencies. The attenuation of the vertical displacement amplitude on ground surface under each load was computed in the area ranging from 0m to 30m. The results show that the displacement amplitude may rebound in a particular area under some loading frequencies and this phenomenon is closely related with the loading frequency.
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