高鈦重渣骨料高強(qiáng)混凝土柱抗震性能試驗(yàn)研究*
李小偉1, 2,陳偉2,李學(xué)偉2
- 摘 要
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李小偉1, 2,陳偉2,李學(xué)偉2(1 西南交通大學(xué)地下工程系, 成都 610031; 2 攀枝花學(xué)院土木工程學(xué)院, 攀枝花 617000)[摘要]制作了12根高鈦重渣骨料高強(qiáng)混凝土縮比模型柱,進(jìn)行了擬靜力試驗(yàn)。試驗(yàn)軸壓比分為0.3和0.5兩種;考慮了矩形配箍、十字拉筋復(fù)合箍和雙矩形復(fù)合箍3種配箍方式,其體積配箍率分別為1.38%,1.56%和1.42%;主筋的配筋率分為2.01%和2.26%兩種;高鈦重渣骨料高強(qiáng)混凝土的強(qiáng)度等級(jí)分為C52.5和C68.8兩種。對(duì)高鈦重渣骨料混凝土的滯回曲線、骨架曲線、耗能能力、延性、層間位移角、剛度退化和強(qiáng)度退化進(jìn)行了分析。研究表明高鈦重渣骨料高強(qiáng)混凝土柱的抗震性能與普通骨料高強(qiáng)混凝土柱基本相當(dāng)。[關(guān)鍵詞]抗震性能; 高鈦重渣; 高強(qiáng)混凝土中圖分類號(hào):TU375.4 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1002-848X(2013)09-0096-05Experimental study on seismic performance of high strength concrete columns with high titanium heavy slag as coarse and fine aggregatesLi Xiaowei1,2, Chen Wei2, Li Xuewei2(1 Department of Tunnel and Underground Engineering, Southwest Jiaotong University, Chengdu 610031, China; 2 Department of Civil Engineering, Panzhihua University, Panzhihua 617000, China)Abstract: Twelve scale model columns of high strength concrete with high titanium heavy slag as coarse and fine aggregates (HSC-HTHSCFA) were made and tested under pseudo horizontal force. Primary experimental parameters include that: axial load ratios are 0.3 and 0.5; volumetric ratios of transverse reinforcement for rectangle, cross tie and double rectangle configuration are 1.38%, 1.56% and 1.41% respectively; longitudinal steel ratios are 2.01% and 2.26%; strength grades of HSCHTHSCFA model columns are C52.5 and C68.8. Lateral force lateral displacement hysteretic curve and skeleton curve, energy absorption capacity, displacement ductility factor, story drift, stiffness and strength degradation for model columns were studied. Test results show that the seismic performances of HSC-HTHSCFA model columns are roughly equal to that of usually used high strength reinforced concrete column.Keywords: seismic performance; high titanium heavy slag; high strength concrete*攀枝花市市級(jí)應(yīng)用技術(shù)研究與開(kāi)發(fā)資金項(xiàng)目(2011TX-14)。作者簡(jiǎn)介:李小偉, 博士, 副教授, Email: lilixxxww@126.com。參考文獻(xiàn)[1]肖斐. 鈦渣混凝土性能的研究[D]. 重慶: 重慶大學(xué), 2004.[2]江海民. 高鈦重礦渣集料制備高性能混凝土的研究與應(yīng)用[D]. 武漢: 武漢理工大學(xué), 2011.[3]何小龍. 全高鈦重渣混凝土的研究與應(yīng)用[D]. 重慶: 重慶大學(xué), 2006.[4]孫金坤. 全高鈦重渣混凝土應(yīng)用基礎(chǔ)研究[D]. 重慶: 重慶大學(xué), 2006.[5]李立仁, 支運(yùn)芳, 陳永慶, 等. 高強(qiáng)約束混凝土框架柱抗震性能的研究[J]. 重慶建筑大學(xué)學(xué)報(bào), 2002, 25 (5): 38-45.[6]郭子雄, 呂西林. 低周反復(fù)荷載下高軸壓比RC框架柱的研究[J]. 建筑結(jié)構(gòu), 1999,29(4): 19-22.[7]JGJ 101—96 建筑抗震試驗(yàn)方法規(guī)程 [S]. 北京: 中國(guó)建筑工業(yè)出版社, 1997.[8]ATC-24 Guidelines for cyclic seismic testing of components of steel structures [S]. Redwood City: Applied Technology Council, 1992.
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