新型框架边节点力学性能研究  

Research on mechanical properties of new frame exterior joints

作　　者：裴强[1] 程智 郭航 PEI Qiang;CHENG Zhi;GUO Hang(College of Civil Engineering and Architecture,Dalian University,Dalian 116622,China)

机构地区：[1]大连大学建筑工程学院,辽宁大连116622

出　　处：《广西大学学报（自然科学版）》2021年第2期278-286,共9页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(51878108);辽宁省重点研发计划指导计划项目(2019JH8/10100091)。

摘　　要：节点作为结构体系的关键部位,既是结构抗力的重要影响因素,也是结构整体性的关键因素。历年的地震灾害表明,传统的梁柱节点已经不能满足结构的需求。因此,本文基于节点的整体受力性能分析,提出了一种新型的框架边节点,其构造由普通钢筋、SMA筋及钢板组成,其构造形式简单,便于施工。通过该节点中有无SMA筋以及SMA配筋率的改变来研究节点的滞回曲线、骨架曲线、性能退化以及耗能能力情况。研究表明:含有SMA材料的节点的承载力比普通节点的承载力大,且随着SMA配筋率的增大,其承载力也在提高。As a key part of the structural system,the joint is an important factor affecting the structural resistance and the structural integrity.The earthquake damage over the years shows that the traditional beam-column joints cannot meet the needs of the structures.Therefore,based on the idea that the failure of the joint leads to the collapse of the whole structure,a new type of frame side joint is proposed.Its structure is composed of ordinary steel bar,SMA bar and steel plate.Its structural form is simple and convenient for construction.The hysteretic curve,skeleton curve,performance degradation and energy dissipation capacity of the joint were studied by whether there were SMA bars in the joints and the change of SMA reinforcement ratio.The research shows that the bearing capacity of the joint containing SMA material is larger than that of the ordinary joint,and that the bearing capacity of SMA increases with the increase of reinforcement ratio.

关 键 词：结构抗力 梁柱节点 SMA 刚度退化 

分 类 号：TU375[建筑科学—结构工程]