框架结构的层延性系数和钢梁延性系数的关系

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Relationship Between Story Ductility Factor of Frame Structures and Ductility Factor of Steel Beams

Institute of High Performance Structures, Zhejiang University, Hangzhou 310058, China

摘要: 对框架结构的侧移以及框架层延性系数和钢梁延性系数（转动能力）的关系进行分析。首先讨论了弹性侧移角限值的问题，在考虑钢梁用于承担重力荷载时发现侧移限值与钢材强度等级有关，如Q355可以取1/200作为限值。然后对框架结构的层延性系数与钢梁延性系数的关系进行了分析，并与意大利学者的公式进行了对比，最后给出了建议计算公式。
- 框架 /
- 钢梁 /
- 侧移角 /
- 延性系数
Abstract: An analysis was conducted on the lateral drift of frame structures， as well as the relationship between the story ductility factor of frames and the ductility factor （rotational capacity） of steel beams. First， the elastic drift limit was discussed. When steel beams were designed to resist gravity loads， the elastic drift limit was found to be related to the steel strength grade. For Q355 steel， a limit of 1/200 was considered suitable. Subsequently， the relationship between the story ductility factor and the beam ductility factor was analyzed， and the calculated results were compared with formulas proposed by Italian scholars. Finally， a recommended calculation formula was proposed.
- frame /
- steel beam /
- lateral drift /
- ductility factor

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