摘要
本文提出了高层半钢性连接钢框架二阶效应,包括P—△和P-δ效应的实用简化计算方法,该法便于手算。经验算本文的简化计算结果与精确的电算结果吻合甚好,其精度完全满足工程设计需要。本文对常见的五种高强螺栓梁柱连接的连接铡度进行了计算分析,给出了正常使用荷载下横梁线刚度和节点刚度比值的取值范围。本文还对半铡性连接以及P-△和P—δ效应对框架工作性能的影响进行了研究。
Drastically simplified hand manipulation technique of flexibly jointed frames by considering second order effect,including both P-Δ and P-δ has been implemented.Compari-son of results computed by the presented paper with those more precise,but yet more rigorous studies provided by computers has shown favorable agreement,and it is demonstrated applicable for engineers′ design purpose.Practical values of beam stiffness to connection stiffness ratio for five widely used bolted beam-to-column connections under working load are embodied.Further-more,semi-rigid connections and second order effect upon behavior of frames has also be covered.
基金
国家自然科学基金
博士点专项科研基金
关键词
高层
钢结构
框架
二阶效应
frameworks
second order effect
semi-rigid connection
