9度抗震设防区某54m钢管混凝土束剪力墙结构性能研究

Research on structural performance of 54m concrete-filled multicellular steel tube shear wall in 9-degree seismic fortified area

钢管混凝土束剪力墙结构是一种新型装配式钢结构住宅体系,因在设防烈度9度地区应用钢管混凝土束剪力墙结构的经验不足,目前的《钢管混凝土束结构技术标准》(T/CECS 546—2018)中该体系的适用范围尚未纳入9度抗震设防区。以某高层住宅项目设计案例为背景,通过有限元分析与试验结果对比证明分层壳元可以较好地模拟钢管混凝土束剪力墙在罕遇地震作用下的弹塑性性能,采用结构抗震性能化设计方法对钢管混凝土束剪力墙结构在9度抗震设防区的结构性能进行了研究。结果表明通过适当加厚重要部位的钢管混凝土束剪力墙钢板厚度,该体系可用于9度抗震设防区。

The concrete-filled multicellular steel tube shear wall structure is a new type of prefabricated steel structure residential system.Because of the lack of experience in applying concrete-filled multicellular steel tube shear wall structures in 9-degree seismic fortification areas,the scope of application of the system in the current specification Technical standards for concrete-filled multicellular steel tube structures(T/CECS 546—2018)has not yet been included in the 9-degree seismic fortified area.Based on the design case of a high-rise residential project.It was proved that the layered shell element can better simulate the elasto-plastic performance of the concrete-filled multicellular steel tube shear wall under rare earthquakes by comparing finite element analysis and test results.Structural seismic performance-based design method was adopted to study the structural performance of the concrete-filled multicellular steel tube shear wall structure in the 9-degree seismic fortified area.The results show that by appropriately thickening the steel plate thickness of part of the concrete-filled multicellular steel tube shear wall,the system can be used in the 9-degree seismic fortified area.