上海松江新城交通枢纽暨购物中心钢结构穹顶风振分析  

Wind induced vibration analysis of the steel domeof the Songjiang's traffic and shopping center

作　　者：曹国峰[1] 黄本才[2] 张昕[2] 周大伟[2] 

机构地区：[1]上海建筑设计研究院有限公司,上海200041 [2]同济大学固体力学教育部重点实验室,上海200092

出　　处：《空间结构》2004年第3期6-12,共7页Spatial Structures

摘　　要：大跨度钢结构穹顶为风敏感结构,准确得到平均风荷载和风振力对工程设计非常重要.本文通过数值风洞模拟方法得到了各风向下穹顶结构的平均风压,尤其是给出了有效分析风激动力响应和等效风荷载的理论方法.通过分析松江新城钢结构穹顶的风振实例看出,对该工程风振影响最大的是整体水平与竖向运动的前八阶振型,动力部分大体占总响应的25%.本文为大跨度屋盖结构的风振分析提供了一种有效的计算方法.Static and dynamic wind loading is a key consideration in the structural design of large-span steel domes which are wind induced sensitive structures. This paper obtains static wind loads based on numerical wind tunnel modeling, and presents the effective theoretic method of wind induced dynamic responses and equivalent wind load analysis. By analyzing the wind induced vibration of the steel dome of the SongJiang's traffic and shopping center, it was found the effect of the previous eight modes about whole horizontal and vertical movement is prominent and dynamic contribution to the whole wind effects is about 25%. This paper presents an effective method for the wind induced vibration analysis of large-span roofs.

关 键 词：穹顶结构 风振分析 大跨度钢结构 松江新城 大跨度屋盖结构 平均风压 竖向 工程设计 振型 风向 

分 类 号：TU984.251[建筑科学—城市规划与设计] TU312.1