某内穿式拱-桁架结构设计及其连续倒塌分析  

Structural design and progressive collapse analysis on an internal-break arch-truss structure

作　　者：朱哲达[1] 舒赣平[1] 金如元 赵伟[2] 米金星[2] 

机构地区：[1]东南大学土木工程学院,南京210096 [2]江苏省建筑设计研究院有限公司,南京210096

出　　处：《建筑结构》2013年第19期42-47,53,共7页Building Structure

摘　　要：利用拱竖向刚度大的特点,可有效减小与其协同工作的桁架的高度。以南京青奥体育场馆为工程背景,研究了内穿式拱-桁架协同工作的机理与设计方法。对此结构体系的受力性能进行分析,并分析其稳定性;对拱与桁架相连节点进行有限元分析,以确保关键节点具有足够的承载力;使用抽柱法进行结构抗连续倒塌计算,以分析结构关键构件。基于上述结果,给出了此类结构的设计建议。Take the advantage of the high vertical stiffness of the arch, the height of the truss which cooperative works with tile arch can be effectively reduced. The cooperative work mechanism and design method of the internal-break arch-truss structure were discussed in the engineering background of Nanjing Olympic Sports Venues. Stress performance and stability of the structure were analyzed. Finite element analysis was taken on the connections of arch and truss to guarantee enough load-bearing capacity of key connections. Column-pumping method was introduced in anti-progressive collapse of the structure to analyze vital members. Based on the above analysis results, advises on this type of structures are given.

关 键 词：内穿式拱-桁架结构 结构布置 受力性能 节点分析 连续倒塌分析 

分 类 号：TU393.3[建筑科学—结构工程]