方钢管钢筋再生混凝土短柱轴压承载力分析  

Axial bearing capacity analysis of RRAC filled square steel tube short columns

作　　者：刘坚[1,2] 田勇 张鹏程 江进 曹占彬 张世豪 Liu Jian;Tian Yong;Zhang Pengcheng;Jiang Jin;Cao Zhanbin;Zhang Shihao(College of Civil Engineering,Guangzhou University,510006,Guangzhou,China;Guangdong Engineering Technology Research Center for Complex Steel Structures,Guangzhou University,510006,Guangzhou,China;Xiangxi Vocational and Technical College for Nationalities,416000,Xiangxi,China)

机构地区：[1]广州大学土木工程学院,广州510006 [2]广东省复杂钢结构工程技术研究中心,广州510006 [3]湘西民族职业技术学院,湘西416000

出　　处：《应用力学学报》2021年第5期2175-2181,共7页Chinese Journal of Applied Mechanics

基　　金：国家自然科学基金(51678168);广东省自然科学基金(2017A030313267);广州市科技计划项目(201607010107)。

摘　　要：以方钢管钢筋再生混凝土(RRACFSST)短柱为研究对象,考虑方钢管与钢筋笼的双重约束作用,采用极限分析法和套箍理论对RRACFSST短柱轴压承载力进行分析,推导了一套含钢管宽厚比、再生粗骨料取代率、配筋率以及约束效应系数等影响参数的RRACFSST短柱轴压承载力计算公式,并对其影响参数进行了分析。在理论推导的基础上,将轴压承载力公式计算值与相关试验数据进行对比,发现吻合较好,验证了承载力公式的有效性与实用性。研究结论可为工程实践提供理论参考。The RRAC filled square steel tube(RRACFSST)short columns are taken as the research object.The double constraints of square steel tubes and steel cages are considered,and the axial bearing capacity of RRACFSST short columns are analyzed by using the limit analysis method and the ferrule theory.A formula for calculating the axial bearing capacity of RRACFSST short columns with influencing factors such as steel pipe width to thickness ratio,recycled coarse aggregate replacement rate,reinforcement ratio and constrained effect coefficient is proposed.The influence factors are also analyzed.On the basis of theoretical derivation,the calculated values of axial bearing capacity formula are compared with the related test results,which are in good agreement.The validity and practicability of the bearing capacity formula are verified.The research conclusion can provide theoretical basis for engineering practice.

关 键 词：方钢管钢筋再生混凝土短柱 极限分析法 再生粗骨料取代率 约束效应系数 

分 类 号：TU398.9[建筑科学—结构工程]