《钢结构与钢-混凝土组合结构设计方法》的理解与应用——矩形钢管混凝土柱  

Understanding and application of the Design method for steel structures and steel-concrete composite structures-rectangular concrete-filled steel tube column

作　　者：周佳[1] 童根树[2] 付波 刘宜丰[1] 李常虹 张悦 ZHOU Jia;TONG Genshu;FU Bo;LIU Yifeng;LI Changhong;ZHANG Yue(China Southwest Architectural Design&Research Institute Co.,Ltd.,Chengdu 610041,China;Institute of High-performace Structures,Zhejiang University,Hangzhou 310058,China;Hangzhou TongMSK Architectural Structure Design Office Co.,Ltd.,Hangzhou 311215,China)

机构地区：[1]中国建筑西南设计研究院有限公司,成都610041 [2]浙江大学高性能结构研究所,杭州310058 [3]杭州铁木辛柯建筑结构设计事务所有限公司,杭州311215

出　　处：《建筑结构》2023年第11期149-155,共7页Building Structure

摘　　要：截面高宽比h/b大于2.0的矩形钢管混凝土柱具有较好的外观优势,能避免室内出现凸柱现象,随着实际应用日渐增多,对其的研究也越发深入。根据《隐式钢管混凝土结构技术规程》(T/CECS 951—2021)和《矩形钢管混凝土结构技术规程》(CECS 159:2004)两本规范给出的条文对构件的计算结果及构造要求进行了对比。计算对比包括截面塑性发展能力、单向压弯荷载作用下的截面强度及单向压弯荷载作用下的平面内稳定承载力等三个方面。计算结果将再与多组实际试验结果进行对比,根据两者计算偏差判断规范公式的合理性。构造方面主要对比截面尺寸、长细比、宽厚比、轴压比及强柱弱梁验算公式和免除强柱弱梁验算的条件。结果表明,相比于CECS 159:2004,T/CECS 951—2021更接近实际试验结果,计算公式更合理,构造要求规定更全面。The rectangular concrete-filled steel tube column with the height-width ratio h/b greater than 2.0 has better appearance advantages and can avoid the phenomenon of convex in the room.With the increasing of practical applications,the relevant research is getting deeper.The calculation results and construction requirements of components were compared according to the provisions given in Technical specification for structures with deep concrete-filled steel tubular members(T/CECS 951—2021)and Technical specification for structures with concrete-filled rectangular steel tube members(CECS 159:2004).The calculation includes three aspects,which are the section plastic development capacity,the section strength under one-way compression and bending load,and in-plane stability bearing capacity under one-way compression and bending load.The calculation results will be compared with the actual test results and the rationality of the standard formula will be judged according to the calculation deviation.In terms of structure,the comparison includes the section size,slenderness ratio,width-to-thickness ratio,axial compression ratio,and the calculation and exemption of strong columns and weak beams.The results show that compared to CECS 159:2004,T/CECS 951—2021 is closer to the actual test results,the calculation formula is more reasonable,and the construction requirements are more comprehensive.

关 键 词：矩形钢管混凝土柱 压弯承载力 轴压比 长细比 宽厚比 强柱弱梁 

分 类 号：TU391[建筑科学—结构工程]