黄东梅, 朱乐东, 丁泉顺, 陈伟. 超高层建筑等效静力风荷载的反演法[J]. 工程力学, 2012, 29(1): 99-105.
引用本文: 黄东梅, 朱乐东, 丁泉顺, 陈伟. 超高层建筑等效静力风荷载的反演法[J]. 工程力学, 2012, 29(1): 99-105.
HUANG Dong-mei, ZHU Le-dong, DING Quan-shun, CHEN Wei. EQUIVALENT STATIC WIND LOADS ON HIGH-RISE BUILDINGS BASED ON INVERSION METHOD[J]. Engineering Mechanics, 2012, 29(1): 99-105.
Citation: HUANG Dong-mei, ZHU Le-dong, DING Quan-shun, CHEN Wei. EQUIVALENT STATIC WIND LOADS ON HIGH-RISE BUILDINGS BASED ON INVERSION METHOD[J]. Engineering Mechanics, 2012, 29(1): 99-105.

超高层建筑等效静力风荷载的反演法

EQUIVALENT STATIC WIND LOADS ON HIGH-RISE BUILDINGS BASED ON INVERSION METHOD

  • 摘要: 该文根据刚性模型测压风洞试验结果,给出了确定等效静力风荷载的反演法,其中,位移等效静力风荷载是在已知最终位移的基础上,运用虚拟广义坐标的概念,根据线性最小二乘法进行反推,而内力等效静力风荷载则在最终截面内力已知的基础上,根据悬臂梁静力平衡法进行反推。值得注意的是,计算等效静力风荷载所需的最终响应是根据完全二次型组合方法(CQC)求出的,不再分成背景分量和共振分量,而且还可以考虑多振型的耦合。以陆家嘴X3-2 地块办公楼为例进行刚性模型测压风洞试验,根据反演法计算出位移等效静力风荷载和内力等效静力风荷载,然后由静力法求出最终响应,通过与CQC法直接计算的结果对比来说明其有效性。

     

    Abstract: An inversion method for the equivalent static wind loads (ESWLs) on high-rise buildings is proposed according to a rigid model synchronization pressure-measured wind tunnel test, in which, by using the concept of virtual generalized coordinates, the displacement-related equivalent static wind loads can be obtained on the basis of the linear least square method when the final displacements are known, and the internal force-related equivalent static wind loads can be acquired by a cantilever element force balance method when the final internal forces of each section are known. It is noteworthy that in the proposed approach the final dynamic responses are directly calculated by the complete quadratic combination approach (CQC) and no longer separated into the background component and the resonating component, moreover, the multimode coupling can be considered. Finally, a rigid model synchronization pressure-measured wind tunnel test of X3-2 office building in Lujiazui is performed to illustrate the application of the inversion method for ESWLs, and the result comparison of the static method to CQC approach demonstrates its effectiveness.

     

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