考虑轴向应变不均匀性的RC柱轴压性能研究  

Study on the Axial Compression Performance of RC Columns Considering the Nonuniformity of Axial Strain

作　　者：许鹏红[1,2] 刘亚 刘阳[1,4] 黄秋来 黄群贤[1,4] 

机构地区：[1]华侨大学土木工程学院,福建厦门361021 [2]北京华巨建筑设计有限公司厦门分公司,福建厦门361008 [3]中国联合工程公司厦门分公司,福建厦门361021 [4]福建省结构工程与防灾重点实验室,福建厦门361021

出　　处：《华侨大学学报（自然科学版）》2015年第2期221-225,共5页Journal of Huaqiao University(Natural Science)

基　　金：国家自然科学基金资助项目(51208219);福建省科技重大项目(2013Y4006);福建省科技重点项目(2012Y0051);福建省泉州市科技计划项目(2012Z93)

摘　　要：为评价变形不均匀性对钢筋混凝土(RC)柱轴向变形性能的影响,采用MATLAB编制计算程序,对RC柱在单调轴压工况下的荷载变形关系进行计算分析.通过与已有试验结果和有限元方法的对比,验证程序的合理性,并在此基础上进行参数分析.研究表明:是否考虑轴向变形不均匀,对RC柱峰值荷载所对应轴向变形的影响不明显,但是对RC柱极限荷载所对应变形的影响显著,最大差异可超过50%.The load-deformation relationship of reinforced concrete（RC）columns under monotonic axial load was analyzed by calculation program writing of MATLAB to evaluate effect of axial deformation nonuniformity on the axial deformation performance of RC columns.The program was validated by comparison between existed experimental results and calculation results by FEM method.The parametric study was then carried out.It is indicated that the influence of axial deformation nonuniformity on the axial deformation corresponding to the peak load is not obvious,while the influence on the ultimate axial deformation is remarkable,the maximum difference can be more than 50%.

关 键 词：钢筋混凝土柱 轴向应变 不均匀 轴压性能 约束混凝土 体积配箍率 

分 类 号：TU318[建筑科学—结构工程]