高耸结构考虑风与结构耦合作用的非线性风振响应  

Nonlinear wind-induced vibration response of high-rise structure considering wind-structure interaction

作　　者：薛松涛[1] 范存新[1] 陈镕[1] 葛晓明[2] 

机构地区：[1]同济大学结构工程与防灾研究所 [2]苏州科技学院土木系,苏州215011

出　　处：《苏州大学学报（自然科学版）》2003年第1期35-41,共7页Journal of Soochow University(Natural Science Edition)

基　　金：国家杰出青年基金资助项目(59925820);苏州科技学院科研基金资助项目(HB2001-305)

摘　　要：虽然在通常的结构风振计算中不考虑风荷载与结构的耦合作用,但是对基频较低的高层建筑和高耸结构,风与结构的耦合作用不容忽视.根据风的统计特征,将风速模拟成时间的函数,然后在结构的运动微分方程中考虑风速与结构速度的耦合作用,采用逐步积分法在每一时间步内求解方程,最后得到结构的风振响应.算例表明对高耸结构应考虑风与结构的耦合作用.Although the windstructure coupling effect isn't considered in the ordinary calculation of the windinduced vibration,the windstructure interaction has the significant effect to the tall buildings and highrise structures according to the lower first frequent. The basic method is to simulate wind velocity as a function of time according to the statistics character of wind firstly. Then the differential equations of structural system are solved by using the step by step solution method considering the coupling effect of wind velocity and structure velocity. From the analysis, it is clear that when wind velocity is considered, the structure response has been reduced.

关 键 词：风振响应 耦合 非线性 

分 类 号：TU31[建筑科学—结构工程]