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以大直径钢管为结构主体的钢管塔是一种很有发展潜力的新型塔。为减小塔体高度和减少占地 ,常需将钢管塔建于屋顶。大直径钢管是空间薄壁壳体 ,其结构分析设计与传统的杆系塔架有很大不同 ,可供参考的资料很少。当钢管塔建于屋顶时 ,由于钢管塔与其下部房屋存在相互作用 ,动力特性与直接建于地面有本质差别。采用有限单元法完成了屋顶钢管塔地震作用时程分析 ,得到了一些结论
Steel pipe tower with the main structure of large diameter steel pipe is a new tower with great potential for development. In order to reduce the height of the tower and reduce the area, it is often necessary to build the steel tube tower on the roof. Large-diameter steel pipe is a thin-walled shell space, the structural analysis and design of the traditional pole tower tower are very different, very little information for reference. When the steel pipe tower is built on the roof, there is an essential difference between the dynamic characteristics and the directly built on the ground due to the interaction between the steel pipe tower and the lower house. Finite element method is used to complete the time history analysis of roof steel pipe tower seismic action and some conclusions are obtained