兰州理工大学西校区大学生活动中心结构设计与分析

Structural design and analysis of college student activity center in West Campus of Lanzhou University of Technology

兰州理工大学西校区大学生活动中心由剧场、报告厅和活动中心三部分组成,建筑外观以兰州“天斧沙宫”景观为原型,建筑造型较为复杂。考虑到建筑功能及结构布置的特殊性,该建筑结构体系选用屈曲约束支撑-混凝土框架结构,采用YJK与SAP2000软件对屈曲约束支撑-混凝土框架结构、钢支撑-混凝土框架结构及混凝土框架结构进行对比分析。结果表明:钢支撑-混凝土框架结构、屈曲约束支撑-混凝土框架结构可有效控制结构的扭转不规则,为结构提供侧向刚度;在多遇地震下,屈曲约束支撑-混凝土框架结构耗能效果并无显著体现;在罕遇地震下,屈曲约束支撑-混凝土框架结构的滞回耗能效果明显优于钢支撑-混凝土框架结构和混凝土框架结构。同时针对结构薄弱部位采取了有效的抗震加强措施。

College student activity center in West Campus of Lanzhou University of Technology consists of three parts:theater,lecture hall and activity center.The exterior of the building is based on the landscape of Tianfusha Palace in Lanzhou,with a complex architectural shape.Considering the particularity of building function and structure arrangement,the structural system of the building adopts buckling-restrained braced(BRB)-concrete frame structure.The BRB-concrete frame structure,steel brace-concrete frame structure and concrete frame structure were analyzed by YJK and SAP2000 software.The results show that the steel braced-concrete frame structure and BRB-concrete frame structure can effectively control the torsion irregularity of the structure and provide lateral stiffness for structure.The energy dissipation effect of the BRB-concrete frame structure is not obvious in frequently occurred earthquake.The hysteretic energy dissipation effect of BRB-concrete frame structure is obviously better than that of steel brace-concrete frame structure and concrete frame structure in rarely occurred earthquake.At the same time,effective seismic strengthening measures were taken for the weak parts of the structure.