考慮樁—土—結(jié)構(gòu)相互作用的上海中心大廈miranda模型地震反應(yīng)研究
[Abstract]:Shanghai Central Tower is one of the three super high-rise buildings planned for development in Lujiazui Financial Center of Shanghai. It is the last super high-rise building in Lujiazui area (Jinmao Tower 420.5m1998, Global Financial Center 497m2008 year). It is also the highest (632 m). For these reasons, the importance of the Shanghai Center Tower is self-evident. According to the generalized interstory displacement spectrum model put forward by miranda, the simplified model of Shanghai Central Building was established by the Department of Civil Engineering of Tsinghua University based on MSC.marc, and according to the regulations of the Code for Seismic Design of buildings, The dynamic time history analysis of the model is carried out under the assumption of rigid foundation. However, many studies show that because the foundation soil is not absolutely rigid, the foundation soil has an effect on the superstructure, especially when the foundation is soft soil, so it is necessary to consider the soil-structure interaction. In this paper, the miranda model of Shanghai Central Mansion (hereinafter referred to as superstructure) under the assumption of rigid foundation is studied by ANSYS software. The dynamic time history analysis of the miranda model of Shanghai Central Mansion (hereinafter referred to as the whole structure) considering the pile-soil-structure interaction is carried out, and some useful conclusions are obtained by comparing the two models. In this paper, the acceleration coupling term at the foundation is extracted and superimposed with the original seismic wave to form the modified seismic wave. The modified seismic wave is input into the superstructure assumed by the rigid foundation to consider the effect of the interaction. It provides the support for reducing the seismic calculation scale of the structure.
【學(xué)位授予單位】:天津大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2013
【分類號(hào)】:TU973.212
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