不同軸壓比下再生混凝土高剪力墻試驗研究
陳麗華,肖飛,柳炳康,周安,司海玉
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陳麗華,肖飛,柳炳康,周安,司海玉(合肥工業(yè)大學(xué)土木與水利工程學(xué)院, 合肥 230009)[摘要]為研究不同軸壓比下再生混凝土高剪力墻的抗震性能,進(jìn)行了3個不同軸壓比、骨料取代率為100%的再生混凝土高剪力墻的低周反復(fù)荷載試驗。在此基礎(chǔ)上,分析了各剪力墻的破壞特征、承載力、延性和滯回特征。研究結(jié)果表明:軸壓比對再生混凝土高墻的性能有重要影響,軸壓力的增加可提高再生混凝土高剪力墻的承載力,但會降低再生混凝土剪力墻的延性和耗能能力;軸壓比適中的再生混凝土高剪力墻,延性較好,滯回環(huán)穩(wěn)定,有良好的耗能能力,破壞形式為彎曲破壞。在實際工程中,通過設(shè)定合理的軸壓比限值,將再生混凝土高剪力墻應(yīng)用于建筑結(jié)構(gòu)中是可行的。[關(guān)鍵詞]再生混凝土;高剪力墻;軸壓比;抗震性能;試驗研究中圖分類號:TU375 文獻(xiàn)標(biāo)識碼:A 文章編號:1002-848X(2013)09-0101-04Experimental study of recycled concrete high shear walls under different axial-load ratiosChen Lihua, Xiao Fei, Liu Bingkang, Zhou An, Si Haiyu(School of Civil Engineering, Hefei University of Technology, Hefei 230009, China)Abstract: In order to study the seismic performance of recycled concrete high shear walls under different axial-load ratios, the low-cyclic loading tests were carried out for three recycled concrete high shear walls with the 100% replacement ratio of recycled coarse aggregate and three kinds of axial-load ratios. Based on the experiments, the failure characteristics, bearing capacity, ductility and the hysteresis properties of shear walls were analyzed. The results show that the axial-load ratio has important influence on the performance of recycled concrete high shear walls. The bearing capacity of recycled concrete high shear walls increases with the increase of the axial-load ratio, however, the ductility and energy dissipation decrease. The recycled concrete high shear walls with rational axial-load ratio have stable hysteresis loop, good ductility and energy dissipation, and the failure modes are the bending failure. In practice, it is feasible that the recycled concrete high shear walls are applied to building structures through setting rational value of the axial-load ratio.Keywords: recycled concrete; high shear wall; axial-load ratio; seismic performance; experimental study作者簡介:陳麗華,博士,副教授, Email:hfclh1997@126.com。參考文獻(xiàn)[1]肖建樁,李佳彬,蘭 陽.再生混凝土技術(shù)研究最新進(jìn)展與評述[J]. 混凝土,2003(10):17-20.[2]BAIRAGI N K, RAVANDE K. Behavior of concrete with different proportions of natural and recycled aggregate[J]. Resource, Conservation and Recycling, 1993, 9(3): 109-126.[3]白文輝,王柏生. 再生粗骨料混凝土梁受彎計算適用性研究[J].建筑結(jié)構(gòu),2009,39(8): 52-55.[4]合肥工業(yè)大學(xué),合肥市重點工程建設(shè)管理局.城市道路水泥混凝土路面再生利用技術(shù)的研究報告[R].合肥:2008.[5]柳炳康,陳麗華,周安,等. 再生混凝土框架梁柱中節(jié)點抗震性能試驗研究 [J].建筑結(jié)構(gòu)學(xué)報,2011,32 (11): 109-115.[6]GB 50010—2010混凝土結(jié)構(gòu)設(shè)計規(guī)范[S]. 北京:中國建筑工業(yè)出版社,2011.[7]程文瀼,顏德姮.混凝土結(jié)構(gòu)[M]. 北京:中國建筑工業(yè)出版,2005.[8]曹萬林,徐泰光,劉強(qiáng),等.再生混凝土高剪力墻抗震性能試驗研究[J]. 世界地震工程,2009,25(2):18-23.[9]李兵,李宏男,曹敬黨.鋼筋混凝土高剪力墻擬靜力試驗研究[J].沈陽建筑大學(xué)學(xué)報,2009,25(2):230-234.