Seismic Response Analysis of One Hundred Meters High-Rise Buildings in Shanghai under Strong Earthquake of Near Field

To begin with,a bedrock seismic wave as a disastrous M8.0 earthquake wave which was assumed to happen in Shanghai near field was selected,according to the different bedrock seismic wave records during Wenchuan earthquake.Then,the seismic ground responses in site of a hundred meters high-rise building were calculated and the ground seismic waves under the strong earthquake on near field were analyzed.Finally,the characteristics of the seismic response of the building were analyzed and the effect of a strong earthquake in near field was essentially discussed.The numerical results showed that the difference of the seismic response of the structure between bi-direction ground motions and one-way ground motion were obvious.The amplification effect of vertical response to the top floor under the vertical component of ground motion was significant.The horizontal component of ground motion amplified the response of the top floor in three directions.The horizontal component of ground motion affected decisively the displacement angle of the structural story.The horizontal component of ground motion had greater influnce on the inner force in bottom columns than the vertical component.