The Response Analyse Of Site Earthquake Motion On Ni'er Earthquake

Firstly the record of 3 component acceleration from Ms6.4 Ning'er Earthquake at 05:34:56 on June 3,2007, which are collected by Chinese earthquake station net, is analyzed preliminarily in this paper. In this earthquake record, Chinese station net of digital strong earthquake motion in Yunan has collected more than 20 pieces of records of surface motion. The max acceleration of this record is 431.2 cm/s2. And almost half pieces of acceleration records come form fault distance which is less than 100km.Analyzing this earthquake record, establishing the model of Ning'er ground motion attenuation and using ground response of soil analysis are to get ground notion theoretical value and prepare for earthquake disaster. Major tasks of this paper are two parts of ground motion attenuation and dynamic response of soil.In ground motion attenuation aspect, by regression analysis of Ning'er strong earthquake motion characteristic, PGA attenuation rule of earthquake fault distance arrounding this earthquake area and acceleration respone spectrum are given. Meanwhile considering about the limitation from the data quantity of this earthquake record made error, Yunan is divided to 3 parts based on distribution situation of geologic circumstance and observation data of earthquake motion. And then attenuation model that can response attenuation speed and seismicity relation is used. According to analyzing historical earthquake record, the relationg of Ning'er earthquake motion peak attenuation is established.Besides, a structure generally is put into non-linear state under the strong earthquake action. The earthquake in-put energy is dissipated by the damp and inelastic distortion. Hence, the energy is the best reasonable parameter when a structure is inelastic designed or evaluated for seismic hazard. Presently, the ultimate-state seismic design based on energy has been concerned in the field of earthquake engineering as a hot subject study.Engineering site are the carrier of seismic wave propagation, seismic waves at different venues in the existence of differences in propagation characteristics, site conditions on seismic wave propagation has a significant impact has become an accepted fact. For building structures, large, quality great, if the construction to non-bedrock, and its on the lower part of the structure will be a dynamic interaction of the influencing factors can not be ignored, then the structure of the input ground motion will also be significantly different from the free space vibration. Therefore, high-rise building structure seismic response analysis using the input ground motion to be discussed in detail.In this paper, utilizing theoretical analysis method, which means equivalent linear seismic response analysis of soil analysis of treatment methods, is that the first complete analysis of seismic response of elastic layer, and then carried out on the linear soil equivalent linearization, and finally summing up the calculation process diagram.In addition, the paper conducted a soft interlayer in the structure of the impact of soil Analysis, in previous studies, based on its investigation to do a summary of damage analysis.