型鋼再生混凝土組合柱軸壓比限值研究*
馬輝1，毛肇瑋1，薛建陽2，劉云賀1，王振山1
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(1 西安理工大學(xué)土木建筑工程學(xué)院， 西安 710048； 2 西安建筑科技大學(xué)土木工程學(xué)院， 西安 710055)
［摘要］在17個(gè)型鋼再生混凝土組合柱低周反復(fù)荷載試驗(yàn)研究的基礎(chǔ)上，結(jié)合型鋼再生混凝土組合柱試驗(yàn)位移延性系數(shù)和極限角變形，給出了滿足型鋼再生混凝土組合柱抗震延性要求的軸壓比限值。采用大小偏心受壓界限破壞理論推導(dǎo)了發(fā)生彎曲破壞時(shí)型鋼再生混凝土組合柱的標(biāo)準(zhǔn)軸壓比計(jì)算公式。在此基礎(chǔ)上，結(jié)合抗震等級(jí)的要求，考慮體積配箍率、剪跨比對(duì)型鋼再生混凝土組合柱抗震性能的影響，最終提出了不同剪跨比、不同配箍率以及不同抗震等級(jí)下型鋼再生混凝土組合柱的軸壓比限值。研究結(jié)果可為型鋼再生混凝土組合柱的抗震設(shè)計(jì)提供參考依據(jù)。［關(guān)鍵詞］型鋼再生混凝土; 組合柱; 延性; 軸壓比限值; 體積配箍率中圖分類號(hào)：TU398 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：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
*國家自然科學(xué)基金項(xiàng)目（51408485，51178384），中國博士后科學(xué)基金資助項(xiàng)目（2015M572584），住房和城鄉(xiāng)建設(shè)部科學(xué)技術(shù)計(jì)劃項(xiàng)目（2015-K2-011），陜西省高校科協(xié)青年人才托舉計(jì)劃資助，西安市建設(shè)科技計(jì)劃項(xiàng)目（SJW2014025），西安理工大學(xué)教師科研啟動(dòng)基金（118-211310）。作者簡介：馬輝，博士，副教授，Email: mahuiwell@163.com。
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