[提要]  天津大学体育场看台罩棚采用了大跨悬挑钢桁架结构，针对其跨度较大、形状不规则的特点，详细阐述了该种结构的体系布置情况和静、动力分析过程。体系布置采用三角形桁架结构，通过檩条和支撑将其连结成一个稳定的整体。最后简要地介绍了制作和安装方法。
[关键词]  大跨悬挑钢桁架结构  结构设计  静力计算  动力反应  反应谱法  时程分析法

The cantilever of Tianjin university stadium is designed with long-span steel truss structure. The structure has a wide span and irregular appearance. The situation of structural system and the process of the static and dynamic analysis are described in detail. In the static analysis, the effect of wind load and seismic load is emphasized. In the dynamic analysis,the response spectrum method and the time history analysis method are used to check the safety of the structure. The installation method is introduced briefly.
Keywords:  long-span cantilever steel truss structure; structural design; static analysis; dynamic response

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