高钛重渣骨料高强混凝土柱抗震性能试验研究

Experimental study on seismic performance of high strength concrete columns with high titanium heavy slag as coarse and fine aggregates

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。

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 I-ISC-HTHSCFA 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.