介绍了三种常用的钢框架支撑体系，总结了中心支撑体系、偏心支撑体系和偏离中心支撑体系的特点和应用范围，提出了钢框架中心支撑体系和偏心支撑体系的设计计算原则和分析方法。

In the paper, three types of steel braced frames are introduced. The features of concentrically steel braced frames, eccentrically braced frames and off-centrically braced frames and their application scope are concluded. Some calculating rules and design methods about concentrically steel braced frames and eccentrically braced frames are put forward.