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。 Northeastern Normal University Gymnasium adopts prestressed long-span steel pipe truss structure system. By arranging the cables inside the lower chord steel truss, the cable and the steel pipe truss work together to improve the static and dynamic characteristics and the overall stability of the structure. Based on the structural strength, elastic deformation and stability, a large number of prestressed long-span structures are calculated and analyzed. The relationships between the prestress, structural strength, deformation and stability of the system are comprehensively expounded from the perspective of the relationship among them. The results can provide guidance and reference for the design of similar structural systems.