某艺术中心工程拟建的音乐厅为混凝土框架结构,中部为楼板缺失的大跨度空间,此大跨度空间采用钢网架结构。由于建筑功能以及美观要求,最终确定采取屈曲约束支撑-混凝土框架结构体系。在多遇地震下,采用SATWE软件进行计算,发现无屈曲约束支撑时,结构的抗侧刚度较弱,层间位移角不能满足规范要求;加入屈曲约束支撑后,结构抗侧力得到显著改善,各项指标均满足规范要求。在罕遇地震下,采用MIDAS软件进行计算,屈曲约束支撑可视为金属阻尼器,率先屈服耗能,成为结构的第1道防线,符合抗震性能化设计多道设防的设计理念。
解志强
doaj
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