(哈尔滨工业大学土木工程学院 150090)
［提要］ 通过对一车辐式预应力索桁架采光顶结构的风洞试验结果进行分析，探讨了平均风压和脉动风压的分布规律及频谱特性；比较了仅考虑上表面风荷载作用和同时考虑上下表面风荷载作用对结构的影响，结果显示前一种情况对结构更为不利。在此基础上，进一步对结构的风致动力特性展开研究，总结风振响应规律，提出相应的抗风设计建议。
［关键词］ 预应力索桁架 玻璃采光顶 风荷载 抗风设计
Research on Wind Loads and Windresist Behavior for a Rungshape Prestressed Cable Truss/Sun Ying,Chen Bo,Wu Yue,Shen Shizhao(School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China)
Abstract:The analysis of the windtunnel experiment results on a rungshape prestressed  cable truss is carried out.The distribution characteristics for average wind pressure, fluctuating pressure and power spectra density are investigated.The comparison between wind action only on the upper roof surface and both on the upper and lower roof surfaces,shows that the latter condition is more advantageous.Base on these results,windinduce dynamic analysis is carried out,and some advices are pointed out.
Keywords:prestressed cable truss; glass roof; wind characteristics; windresist design