钢结构加层中支撑对结构抗震性能的影响

由于自重轻、抗震性能好等优点,钢结构直接在混凝土结构上加层正越来越多地应用到实际工程中.加层后形成的混合结构由于采用不同的结构形式,结构顶部刚度、质量发生突变.支撑作为主要抗侧力构件之一,将影响加层结构体系的整体抗震性能.结合算例,采用有限元分析程序对某框剪结构顶部加钢结构进行整体结构的抗震性能分析,并在此基础上讨论了不同的支撑形式、不同的支撑布置位置对整体结构体系抗震性能的影响.

Influence of Support on Anti-Seismic Performance Within the Steel Adding Storey

Adding steel storey on the top of the concrete structure is widely applied in practice because of its advantages of the lightness and good anti-seismic performances. However,because of the structure difference between the adding storey and the matrix,significant mass and stiffness alterations occur. As one of the major side load resistance components,the support may influence the structural seismic behaviors. In the present paper,the integral structural seismic performance of the steel adding storey on the ...