沈阳奥体中心游泳馆结构抗震计算分析

SEISMIC CALCULATION AND ANALYSIS OF THE INTEGRAL STRUCTURE OF SHENYANG OLYMPIC NATATORIUM

采用SAP 2000软件对沈阳奥体中心游泳馆结构进行抗震计算分析。分析选用单钢结构、单混凝土结构、整体结构3种计算模型,采用振型分解反应谱、弹性时程分析、弹塑性时程分析3种计算方法进行分析,结果表明:单钢结构模型不考虑下部混凝土对钢结构地震作用的放大,偏于不安全;单混凝土模型不考虑钢结构带来的整体结构周期变长的有利影响,偏于保守;在罕遇地震作用下,结构满足相关规范的抗震设防目标。

SAP 2000 software was used to carry out the seismic calculation and anlysis of the structure of Shenyang Olympic Natatorium. Single steel structure model,single concrete structure model and integral structure model were analyzed with three calculation methods： mode-superposition response spectrum,elastic time-history analysis and elasticplastic time-history analysis. The results showed that the single steel structure model was not safe if magnification effect of seismic force from the lower concrete structure was not considered,and it was conservative if the positive period-elongation effect of the integral structure was not considered in the analysis of single concrete model. Under the impact of rare earthquake,the structure could satisfy the seismic design target of relevant codes.