论文部分内容阅读
本文采用反应谱分析法对西黄寺清净化城塔进行了地震安全性分析,找出其薄弱环节,得出对其结构抗震安全性评价有价值的结论。目前的反应谱分析多般基于线弹性应力应变模型,但结构一旦出现开裂,结构的应力应变关系将是非线形性的,若求解开裂结构的位移和应力,反应谱分析不再适用。但反应谱分析结果能够帮助分析人员找出结构的薄弱环节,判断结构在关键部位是否会出现裂缝以及其定性地判定裂缝开展的程度。从这个意义上讲,反应谱分析对结构的抗震分析具有重要的作用。
In this paper, the seismic safety analysis of Xihuangsi clean tower was carried out by using response spectrum analysis method, and the weak links were found out. Finally, the conclusion that the seismic safety evaluation of the structure was valuable was obtained. The current response spectrum analysis is mostly based on the linear elastic stress-strain model. However, once the structure is cracked, the stress-strain relationship of the structure will be non-linear. If the displacement and stress of the cracked structure are solved, the response spectrum analysis is no longer applicable. However, the results of response spectrum analysis can help analysts to find out the weaknesses of the structure, determine whether the structure will crack in the key parts and determine the degree of crack initiation qualitatively. In this sense, response spectrum analysis plays an important role in the seismic analysis of structures.