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高层结构施工规模巨大,施工周期长,在施工过程中仍有一定概率经要受地震作用的考验。利用大型有限元软件ABAQUS建立了广州财富中心施工各阶段的有限元模型,采用时程分析方法对广州财富中心各施工阶段的未完工结构在多遇地震和施工荷载组合作用下的抗震承载力和结构变形进行了分析,验证了结构在施工过程中的安全性。还对不同地震波作用下结构的振动响应进行了对比分析,结果表明:结构的地震响应受地震波卓越频率的影响十分明显,超高层结构在低频长周期地震波作用下的响应明显大于高频地震波作用下的响应。
The high-rise structure has a huge construction scale and a long construction period. In the course of construction, there is still a certain probability of being subjected to the earthquake test. Using the finite element software ABAQUS, the finite element model of Guangzhou Fortune Center construction stage was established. The time-history analysis method was used to analyze the seismic capacity of unfinished structures of Guangzhou Fortune Center under the combination of earthquake and construction load, The structural deformation is analyzed, which verifies the safety of the structure in the construction process. The vibration responses of structures under different seismic waves are also compared and analyzed. The results show that the seismic response of structures is greatly affected by the excellent frequency of seismic waves, and the response of the super high-rise structures under long-period low-frequency seismic waves is obviously greater than that of high-frequency seismic waves the response to.