型钢再生混凝土组合柱轴压比限值研究*
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(1 西安理工大学土木建筑工程学院， 西安 710048； 2 西安建筑科技大学土木工程学院， 西安 710055)
［摘要］在17个型钢再生混凝土组合柱低周反复荷载试验研究的基础上，结合型钢再生混凝土组合柱试验位移延性系数和极限角变形，给出了满足型钢再生混凝土组合柱抗震延性要求的轴压比限值。采用大小偏心受压界限破坏理论推导了发生弯曲破坏时型钢再生混凝土组合柱的标准轴压比计算公式。在此基础上，结合抗震等级的要求，考虑体积配箍率、剪跨比对型钢再生混凝土组合柱抗震性能的影响，最终提出了不同剪跨比、不同配箍率以及不同抗震等级下型钢再生混凝土组合柱的轴压比限值。研究结果可为型钢再生混凝土组合柱的抗震设计提供参考依据。［关键词］型钢再生混凝土; 组合柱; 延性; 轴压比限值; 体积配箍率中图分类号：TU398 文献标识码：A 文章编号：1002-848X(2016)04-0050-06
Study on the limit value of axial compression ratio of steel reinforced recycled concrete composite columnsMa Hui1, Mao Zhaowei1, Xue Jianyang2, Liu Yunhe1, Wang Zhenshan1(1 School of Civil Engineering and Architecture, Xi'an University of Technology, Xi'an 710048, China; 2 School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China)Abstract:Based on the low reversed cyclic loading tests of 17 steel reinforced recycled concrete composite columns and combined with the experimental displacement ductility coefficients and the ultimate angular distortion values of steel reinforced recycled concrete composite columns, the limit values of axial compression ratio were given for steel reinforced recycled concrete composite columns, which could meet the requirements of seismic performance. The standard axial compression ratio-calculation formula of axial compression ratio of steel reinforced recycled concrete composite columns under bending failure was deduced based on compression limit damage theory of the large and small eccentricities. On this basis, considering the seismic grade requirements as well as effects of volume stirrup ratio and shear-span ratio on the seismic performance of steel reinforced recycled concrete composite columns, the limit values of axial compression ratio of steel reinforced recycled concrete composite columns were proposed under different shear-span ratio, stirrup ratio and seismic grade. The research results can provide a reference for the seismic design of steel reinforced recycled concrete composite columns.Keywords:steel reinforced recycled concrete; composite column; ductility; limit value of axial compression ratio; volume stirrup ratio
*国家自然科学基金项目（51408485，51178384），中国博士后科学基金资助项目（2015M572584），住房和城乡建设部科学技术计划项目（2015-K2-011），陕西省高校科协青年人才托举计划资助，西安市建设科技计划项目（SJW2014025），西安理工大学教师科研启动基金（118-211310）。作者简介：马辉，博士，副教授，Email: mahuiwell@163.com。
