宿迁市苏商大厦消能减震设计

Energy-dissipation design of Sushang Building in Suqian

详细分析了宿迁市苏商大厦消能减震设计的全过程。首先按设定的目标位移计算等效阻尼比和阻尼墙数量,并确定减震方案,其次采用PERFORM-3D程序对减震结构进行多遇地震作用下时程分析及罕遇地震作用下动力弹塑性分析,对结构整体抗震性能进行评价,并作出关键构件的性能评估。对减震结构及非减震结构的对比分析说明,罕遇地震作用下,减震结构拥有更大的弹塑性变形和强度储备。

A detailed analysis of the whoh, energy-dissipation design procedures of Sushang Building in Suqian was provided. First of all, the equivalent damping ratio and the number of damping walls were calculated according to the given target displacement. Then the PERFORM-3D program was adopted to perform the time-history analysis under the frequent earthquake level, and the dynamic elasto-plastie analysis under the rare earthquake level as well, both analyses were performed to evaluate the seismic performance of the overall slrut＇ture. The performance of the critical eompnnents was evahlaled as well. Meanwhile, the comparative analysis between the energy-dissipated structure and the nun-energy- dissipated structure shows thai the former structure has capability to undertake greater elasto-plastic deformation and greater strength under rare-earthquakes.