高钛重渣骨料高强混凝土柱抗震性能试验研究*
- 摘 要
-
李小伟1, 2,陈伟2,李学伟2(1 西南交通大学地下工程系, 成都 610031; 2 攀枝花学院土木工程学院, 攀枝花 617000)[摘要]制作了12根高钛重渣骨料高强混凝土缩比模型柱,进行了拟静力试验。试验轴压比分为0.3和0.5两种;考虑了矩形配箍、十字拉筋复合箍和双矩形复合箍3种配箍方式,其体积配箍率分别为1.38%,1.56%和1.42%;主筋的配筋率分为2.01%和2.26%两种;高钛重渣骨料高强混凝土的强度等级分为C52.5和C68.8两种。对高钛重渣骨料混凝土的滞回曲线、骨架曲线、耗能能力、延性、层间位移角、刚度退化和强度退化进行了分析。研究表明高钛重渣骨料高强混凝土柱的抗震性能与普通骨料高强混凝土柱基本相当。[关键词]抗震性能; 高钛重渣; 高强混凝土中图分类号:TU375.4 文献标识码:A 文章编号: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*攀枝花市市级应用技术研究与开发资金项目(2011TX-14)。作者简介:李小伟, 博士, 副教授, Email: lilixxxww@126.com。参考文献[1]肖斐. 钛渣混凝土性能的研究[D]. 重庆: 重庆大学, 2004.[2]江海民. 高钛重矿渣集料制备高性能混凝土的研究与应用[D]. 武汉: 武汉理工大学, 2011.[3]何小龙. 全高钛重渣混凝土的研究与应用[D]. 重庆: 重庆大学, 2006.[4]孙金坤. 全高钛重渣混凝土应用基础研究[D]. 重庆: 重庆大学, 2006.[5]李立仁, 支运芳, 陈永庆, 等. 高强约束混凝土框架柱抗震性能的研究[J]. 重庆建筑大学学报, 2002, 25 (5): 38-45.[6]郭子雄, 吕西林. 低周反复荷载下高轴压比RC框架柱的研究[J]. 建筑结构, 1999,29(4): 19-22.[7]JGJ 101—96 建筑抗震试验方法规程 [S]. 北京: 中国建筑工业出版社, 1997.[8]ATC-24 Guidelines for cyclic seismic testing of components of steel structures [S]. Redwood City: Applied Technology Council, 1992.