针对现有考虑板筋参与作用的钢筋混凝土框架有效翼缘宽度理论计算公式较复杂、不利于实际应用的问题，文中结合有效翼缘宽度的两个重要影响因素:轴压比和节点类型，设计了不同轴压比的钢筋混凝土空间框架，对各节点类型处的有效翼缘宽度分布规律进行数值回归，得到方便应用于实际设计的有效翼缘宽度简化公式，并提出能更好地实 现“大震不倒”设防目标的改进设计建议．文中还对所提出的简化公式和改进设计建议进行了算例验证．结果表明:回归得到的有效翼缘宽度简化公式使用简单、易操作，因而在实际设计中具有可行性;所提出的改进设计建议有利于更好地实现“大震不倒”的设防目标．

The current theoretical calculation formula of effective flange width of RC frame considering slab rein- forcement participation is too complicated and inconvenient for practical application.In order to solve these prob- lems,by taking into account two main factors influencing effective flange width,namely,axial compression ratio and joint type,RC frames with different axial compression ratios are designed and a numerical regression analysis on the distribution of the effective flange width with different joint types is conducted.Thus,a simplified formula of effective flange width is obtained,which is convenient for practical application.Then,some issues for improving designs are suggested for the purpose of No Collapsing in the Strong Earthquake,and the suggestions and the sim- plified formulas are verified by an example.The results show that (1) the simplified formula is simple and easy to handle,so it is feasible in actual designs; and (2) the suggestions help to realize the purpose of No Collapsing in the Strong Earthquake better.