配有高耸塔结构的大射电望远镜馈源支撑系统的风振分析  

作　　者：宋磊 汤奥斐[2] 

机构地区：[1]西安市市政设计研究院,710068 [2]西安电子科技大学机电工程学院,710071

出　　处：《特种结构》2006年第3期45-47,共3页Special Structures

基　　金：国家自然科学基金资助项目(10433020);教育部留学回国人员实验室基金(030401)

摘　　要：通过时域法分析配有高耸塔结构的大射电望远镜馈源支撑系统的风振响应。首先,由非线性静力分析确定结构初始静态参考位形和初应力;其次,模拟作用在悬索、馈源舱和高耸塔上的随机风荷;最后,对比分析考虑索塔和不考虑索塔两种情况下的馈源支撑系统50m模型的风响应。结果验证了高耸塔变形对舱体定位精度有一定的影响。The time-domain analysis of the response of the feed supporting system for LT with tall tower structures in random wind is developed. Initial static reference posture and initial stresses are determined by nonlinear static analysis. Random wind forces on the cables, cabin and tall towers are simulated based on the character of the structure. The comparison of wind response study on the finite element model of the feed supporting system with towers and with no towers for 50m scaled model is further performed. The results verify the effection of the deformations of the towers on the position precision of the feed supporting system for LT.

关 键 词：大射电望远镜 馈源支撑系统 高耸结构 风荷响应 

分 类 号：TU347[建筑科学—结构工程]