装配式预应力高强箍筋混凝土框架结构强柱弱梁设计  

Design of Strong-column and Weak-beam of Prefabricated Prestressed High-strength Stirrup Concrete Frame Structure

作　　者：程秋月[1] CHENG Qiu-yue(School of Architecture and Engineering,Chuzhou Polytechnic,Chuzhou Anhui 239000,China)

机构地区：[1]滁州职业技术学院建筑工程学院,安徽滁州239000

出　　处：《菏泽学院学报》2023年第2期83-88,共6页Journal of Heze University

基　　金：安徽高校自然科学研究项目(KJ2020A1000)。

摘　　要：为设计满足“强柱弱梁”标准的装配式预应力高强箍筋混凝土框架结构,以5层装配式预应力高强箍筋混凝土框架结构为例,设计此结构梁跨度,依次是3 m、5 m、7 m,轴压比依次是0.7、0.8、0.9,极限弯矩比依次是0.9、1.1、1.3.在OpenSees平台上通过Push-over分析方法,绘制多种条件下结构的荷载-顶点位移变化、塑性铰变化,以此分析所设计装配式预应力高强箍筋混凝土框架结构,是否符合强柱弱梁的设计标准.分析结果显示:梁跨度是3 m、轴压比与极限弯矩比是0.7、0.9时,装配式预应力高强箍筋混凝土框架结构的荷载-顶点位移变化最为稳定,此时塑性铰主要分布于梁端而非柱端,满足强柱弱梁设计标准.In order to meet the standard of strong-column and weak-beam,this paper takes a 5-story prefabricated prestressed high-strength stirrup concrete frame structure as an example,and designs the structural beam span,which is 3m,5m and 7m in turn,the axial compression ratio is 0.7,0.8 and 0.9 in turn,and the ultimate moment ratio is 0.9,1.1 and 1.3 in turn.The push-over analysis method is used on the Open Sees platform to draw the load-vertex displacement changes and plastic hinge changes of the structure under various conditions,and verify whether the designed prefabricated prestressed high-strength stirrup concrete frame structure conforms to the standard of strong columns and weak beams.The results show that when the beam span is 3m,the ratio of axial compression is0.7,and the ultimate bending moment ratio is 0.9,the load-vertex displacement of the frame structure is the most stable,and the plastic hinge is mainly distributed at the beam end rather than at the column end,which meets the design criteria.

关 键 词：装配式 预应力 高强箍筋 混凝土 强柱弱梁 

分 类 号：TU378.4[建筑科学—结构工程]