摘要
可恢复性能的钢结构因其在地震作用后结构基本没有残余变形且可以做到快速修复投入使用,因此成为了近年来国内的研究热点之一。通过在国内外可恢复钢结构已有研究成果的基础上,提出了一种构件取材经济方便、绿色高效、施工简单快捷的新型可恢复钢节点;针对该新型节点,进行理论上的弯矩—转角关系分析,得到节点实现震后可恢复(无残余变形)的限定条件。在可恢复钢框架中,楼板对框架的约束作用不可忽略,楼板的约束作用会限制可恢复钢框架节点的打开—闭合作用,从而影响整个结构的可恢复性能,本文还将介绍一种计算由于楼板约束作用引起的梁轴向压力的增加值的方法,通过简化计算,可以便捷地计算出楼板约束作用引起的梁轴向压力的增加值。
The earthquake resilient steel structure has become one of the research hotspots in China in recent years because it has nearly no residual deformation after the earthquake and can be quickly repaired and return to use.Based on the existing research results of earthquake resilient steel structures at home and abroad,this paper proposes a new type of earthquake resilient steel joint with economical and convenient materials,green and efficient,and simple and fast construction.Analyze the relationship of the moment-rotation,and obtain the limiting conditions for the joint to achieve post-earthquake resilient(without residual deformation).In the earthquake resilient steel frame,the constraining effect of the floor on the frame cannot be ignored.The constraining effect of the floor will limit the opening-closing effect of the joints of the earthquake resilient steel frame,thereby affecting the earthquake resilient of the entire structure.This paper will also introduce a calculation method due to the increasing axial force of the beam caused by the restraint of the floor.It can easily calculate the increase of the axial force of the beam caused by the restraint of the floor by simplifying the calculation.
作者
葛元辉
李延昌
韩良君
李军
梁家栋
王荣棋
查晓雄
GE Yuanhui;LI Yanchang;HAN Liangjun;LI Jun;LIANG Jiadong;WANG Rongqi;ZHA Xiaoxiong(China Railway Construction Group South Engineering Co.,Ltd.,Shenzhen 511400,China;Shenzhen Special Economic Zone Construction Engineering Group Co.,Ltd.,Shenzhen 518034,China;School of Civil Environment Engineering,Harbin Institute of Technology(Shenzhen),Shenzhen 518055,China)
出处
《建筑结构》
CSCD
北大核心
2022年第S01期1873-1876,共4页
Building Structure
关键词
可恢复性能
钢结构
弯矩-转角关系
节点
楼板约束
earthquake resilient
steel structure
moment-rotation relationship
joint
floor constraints
