(1 中国航空规划建设发展有限公司，北京 100120；2 北京工业大学，北京 100124； 3 东北师范大学，长春 130000)
［摘要］东北师范大学体育馆采用的是预应力大跨度钢管桁架结构体系，通过在桁架下弦钢管内部设置拉索，使索与钢管桁架共同工作，改善结构静力、动力特性和整体稳定性能。基于结构强度、弹性变形和稳定性能对预应力大跨度结构进行大量计算分析研究，从三者之间关系的角度全面阐述了预应力、结构强度、变形及体系稳定性能的内在关系。研究结果可为同类结构体系的设计提供指导和借鉴。
［关键词］体内预应力；钢管桁架；弹性变形；失稳大变形；稳定性能
Design and research of structural system of intestine prestress large span penetrated weld pipe truss
Ge Jiaqi1, Wang Shu1, Zhang Guojun1, Li Jian2，Hou Junjian3(1 China Aviation Planning and Construction Development Co., Ltd., Beijing 100120,China；2 Beijing University of Technology, Beijing 100124, China; 3 Northeast Normal University, Changchun 130000, China)
Abstract:Northeast Normal University gymnasium adopts prestress space steel structural system, the roof applys structural system of intestine prestress large span penetrated weld pipe truss, through prestress cable making cable and penetrated weld pipe truss work together, so as to adjust structural mechanics performance, and improve structural statics, dynamical characteristic and the structural overall stability. Through finite element analysis,  structural performance is researched based on structural intensity, elasticity deformation and structural overall stability to expatiate the connection of prestress stiffness and structural overall stability. The results can provide reference for other similar project.
Keywords:intestine prestress; penetrated weld pipe truss; elasticity; buckling; deformation; structural overall stability
作者简介：葛家琪(1964-)，男，研究员，一级注册结构工程师，Email:capdi.gssd@vip.163.com。
参考文献
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［2］葛家琪，王树，梁海彤，等.河南艺术中心大剧院屋盖基于延性的性能化设计研究［J］.建筑结构,2008,38(12).