组合塔式结构及其效能研究

摘要

提出组合塔式结构的设计理念与基本形式，并对其受力机理进行了深入研究。组合塔式结构的基本特征是在塔楼之间设置多道连接桁架，形成由多个单塔与连接桁架构成的巨型结构，使结构的整体抗倾覆性能显著提高。深入研究了连接桁架刚度对结构效能的影响，引入了组合塔式结构的整体弯矩系数。研究结果表明：与传统的结构形式相比，组合塔式结构的抗侧力效能显著提高，可以大大突破单塔的高宽比限值，在现有建筑材料与施工技术条件下，能够建造更高的超高层建筑，并成为未来超高层建筑发展的主要方向之一。%Design concepts and basic forms of bundled tower structure were put forward,and the mechanical behaviors were deeply studied.The main feature of bundled tower structure was that multiple connecting trusses were arranged along vertical direction between adjacent towers,to form a giant structure composed of towers and connecting trusses,and its overturning resistance capacity was improved significantly.Based on the research of stiffness effect of connecting trusses,the overall moment coefficient was introduced to bundled tower structure.The study results show that the lateral force resistance behaviors of bundled tower structure are greatly improved compared with the conventional high-rise structure system, and the aspect ratio limitation on single towers can be broken greatly.Super high-rise buildings can be constructed much higher in condition of existing building material and construction technology using this structure system,which will become the main developing direction for super high-rise buildings.