风作用下高层建筑结构的刚度中心  

Center of rigidity of high-rise building under wind action

作　　者：马升东[1] 周德源[1] 孙良宏 

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092 [2]上海探索结构工程咨询有限公司,上海200020

出　　处：《地震工程与工程振动》2006年第1期134-138,共5页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(50025821);上海市重点学科建设研究项目

摘　　要：本文通过2种方法计算风作用下不规则高层建筑结构的扭矩,给出相应的高层建筑结构刚度中心的定义。方法1:通过分析“楼面偏心距”,得出等效静荷载作用的扭矩,每楼层扭矩等于该楼层以上的各个楼层扭矩之和,加州结构工程师协会标准(SEAOC)推荐此方法。方法2:通过分析“楼层偏心距”,得出等效静荷载作用的扭矩,每楼层扭矩等于该楼层以上的各个楼层扭矩之和,UBC推荐此方法。最后,通过简单例子给出2种方法的具体计算步骤,为高层建筑结构的抗风设计提供参考。This paper provides the definition of the center of rigidity of irregular high-rise building through analyzing the torsional moment on the high-rise building under wind action with two approaches. One approach uses the floor eccentricities, in conjunction with the static equivalent loading to calculate the floor torques. The story torsional moment is then obtained by summing the floor torques above the story. This approach was suggested in the Recommended Lateral Force Requirements and Commentary by the Structural Engineers Association of California. The second approach uses story eccentricities, in conjunction with the static equivalent loading to calculate the story torques. This approach was suggested by Uniform Building Code. In the end, a simple example is worked out in detail to show the steps involved in each approach. It provides the reference for high-rise building design.

关 键 词：风作用 高层建筑结构 刚度中心 楼面偏心距 楼层偏心距 

分 类 号：P315.952[天文地球—地震学] TU973[天文地球—固体地球物理学]