竖向荷载下半刚性连接组合框架的实用设计方法(Ⅰ)——梁柱节点设计  

A Practical Approach for the Design of Semi-Rigid Composite Frames under Vertical Ioads (Ⅰ) —Design of Beam-to-column Connections

作　　者：李国强[1] 王静峰[1] 刘清平[1] 

机构地区：[1]同济大学土木工程学院,上海200092

出　　处：《建筑钢结构进展》2006年第6期27-37,共11页Progress in Steel Building Structures

基　　金：国家杰出青年科学基金资助项目(50225825)

摘　　要：虽然在钢框架结构设计中考虑半刚性连接和楼板的组合效应会产生良好的结构经济性,但是在实际工程中仍很难应用,主要原因是缺乏合适简便的设计方法。本文在国内外研究的基础上,结合我国钢结构设计规范GB50017-2003,给出了竖向荷载下半刚性连接组合框架的实用设计建议方法。设计建议方法包括满足两个极限状态的节点、梁、柱设计,较好地解决了梁挠度和柱有效长度系数计算中节点连接刚度的合理选取、半刚性特征对梁挠度和柱计算长度的影响。该方法不仅反映了节点和框架的实际性能,而且简便实用,符合工程师对普通钢框架的设计习惯。本文为全文的第一部分,介绍了梁柱节点设计。Keywords Although the benefits of semi rigid joints and composite action of slab are extensively documented in the design of steel frames, they are not widely used much in practice. The primary cause is lack of appropriate practical design methods. In this article, based on the present research and Code for Design of Steel Structures GB50017 ,a practical method suitable for design of semi-rigid composite frames under vertical loads is introduced. The approach for the design of connec lions, beams and columns at two limit states of semi rigid composite frames is presented,including the selection of conneetion rotation stiffness in calculating deflection and effective length factor of columns. Not only the proposed ap proach takes into account the actual behavior of the semi-rigid connections and their influence on the whole structure, but also it is simple for designer to use in practice. This paper is the first one of a pair of papers introducing the design of beam to column connections.

关 键 词：设计方法 半刚性连接 楼板组合效应 竖向荷载 组合框架 极限状态 

分 类 号：TU318.04[建筑科学—结构工程]