屈曲约束支撑铰接混凝土框架节点受力性能研究  

Study on the Joint Mechanical Behavior in Hinge-connected Concrete Frame with Buckling Restrained Braces

作　　者：侯和涛[1] 蓝如海 朱文灿[1] 崔士起 石磊 仇锦 王彦明[1] 

机构地区：[1]山东大学土建与水利学院,济南250061 [2]山东省建筑科学研究院,济南250031

出　　处：《工程建设与设计》2017年第19期20-23,26,共5页Construction & Design for Engineering

基　　金：国家自然科学基金资助项目(51578324);山东省墙材革新与建筑节能科研开发项目(鲁财建指(2014)139号)

摘　　要：节点是框架结构中受力较为复杂的区域,也是装配式结构需要解决的核心,合理确定节点区的受力性能,对预测结构破坏形式有重要意义。基于混凝土框架,论文提出一种梁柱铰接形式及一种带屈曲约束支撑(BRB)的梁柱铰接框架体系(BRBF),分析在水平荷载下,梁-柱-支撑节点区的受力性能及传力途径,运用SAP2000,采用Pushover分析方法对结构进行非线性分析,得到BRB在不同连接位置对连接部位的受力影响,并给出节点内力的计算公式。分析表明:在BRBF中,BRB仅与梁连接对节点更有利,BRB与梁连接时,其水平分力向梁跨内传递,竖向分力向梁端传递。The joints in frame structures are under relative complicated loads. Also, it is a core problem that needed to be sloved in prefabricated structure. In order to predict the failure modes of structure, it is essential to consider the mechanical performance of joint area. Based on the concrete frame strectures, a hige-connected BRBF is proposed. Besides, the mechanical performance and the force-transfering mechanism of connection area under horizontal load are analyzed. The pushover analysis of two-dimension frame models by SAP2000 was conducted. Influence of different positions that BRBs connected to frames on the mechanical performanceod the joint areas was discussed. The analysis results indicate that it is more favorable to the joints when BRBs are connected to only beams rather than only columns in BRBF. The horizontal and vertical component of BRBs＇ axial force transfer to beam span and beam end, respectively.

关 键 词：装配式框架 梁柱铰接 BRBF 连接位置 

分 类 号：TU973.1[建筑科学—结构工程]