钢框架梁柱狗骨式节点疲劳性能试验研究  

The experimental study of fatigue behavior about the steel frame's reduced beam section joint

作　　者：曹靖[1] 王建国[1] 完海鹰[1] 

机构地区：[1]合肥工业大学土木与水利工程学院,合肥230009

出　　处：《安徽建筑工业学院学报（自然科学版）》2009年第5期1-4,共4页Journal of Anhui Institute of Architecture(Natural Science)

基　　金：安徽省自然科学基金资助项目(070414175)

摘　　要：对钢框架梁柱狗骨式节点在疲劳荷载作用下进行等比例试验,研究了狗骨式节点的破坏形式、滞回性能、梁截面削弱处和根部的应力应变情况及疲劳性能,并对结果进行了对比分析。试验结果表明对梁截面进行合理的削弱可以达到塑性铰外移的目的,具有更好的抗震性能;梁根部翼缘处的焊缝强度及质量是决定狗骨式节点疲劳性能的关键因素,只有具有良好的焊接质量才能充分发挥狗骨式节点在疲劳荷载作用下的抗震性能。The full-scale fatigue test of the steel frame＇s reduced beam section joint is carried out to research the failure characteristic hysteretic behavior,the condition of stress development, the distribution of stress and the fatigue behavior of this new joints. And analyzes the test＇s results. The experimental results indicate that weaken the beam section reasonably can shift forth the plastic hinge,possess the better earthquake behavior. The welded joint intensity and the quality of the beam root flange are the key factors to decide the fatigue behavior of this new joint. Only the good welding quality can display the earthquake behavior under the fatigue loading.

关 键 词：狗骨式节点 疲劳荷载 抗震性能 

分 类 号：TU391[建筑科学—结构工程]