H形钢翼缘间填充混凝土的部分组合梁抗震性能试验研究

发布时间：2018-06-18 10:11

本文选题：部分组合钢-混凝土组合梁 + 拟静力试验　；参考：《建筑结构学报》2015年S1期

【摘要】：通过改进部分组合梁的系杆配置,设计了2个部分组合梁,研究了该梁在纯弯与剪弯受力状态下的滞回性能,分析了部分组合梁的承载能力、变形能力及耗能能力。试验结果表明:部分组合梁的受压翼缘在弹性阶段内没有屈曲,混凝土的存在提高了受压翼缘的屈曲承载力;部分组合梁在往复加载条件下滞回性能类似于钢梁,其滞回曲线较为饱满,捏缩现象不明显;试验骨架曲线与单调曲线较为吻合,混凝土压溃与剥落会引起部分组合梁的承载能力下降;部分组合梁的试验实测承载能力与采用边缘屈服准则及全截面塑性准则计算得到的理论值较为接近,采用以上两种准则来估计类似截面配置的部分组合梁的承载力是可行的;试件的转角延性系数在4~5之间,耗能系数在2.5左右,表明部分组合梁具有较好的抗震性能。
[Abstract]:By improving the tie bar configuration of some composite beams, two partial composite beams are designed. The hysteretic properties of the beams under pure bending and shear-bending stress are studied, and the load-carrying capacity, deformation capacity and energy dissipation capacity of some composite beams are analyzed. The experimental results show that there is no buckling of the flange in the elastic stage, and the buckling capacity of the flange is improved by the existence of concrete, while the hysteretic behavior of the partially composite beam under reciprocating loading is similar to that of the steel beam. The hysteretic curve is full and the pinch phenomenon is not obvious, the experimental skeleton curve is in good agreement with the monotone curve, and the concrete collapsing and spalling will lead to the decrease of the bearing capacity of some composite beams. The experimental load capacity of some composite beams is close to the theoretical values calculated by the marginal yield criterion and the plastic criterion of the full section. It is feasible to use the above two criteria to estimate the bearing capacity of some composite beams with similar cross-section configuration. The ductility coefficient of rotation angle and the energy dissipation coefficient of the specimen are between 4 ~ 5 and 2.5 respectively, which indicates that some composite beams have good seismic performance.
【作者单位】：同济大学土木工程学院;同济大学土木工程防灾国家重点实验室;
【分类号】：TU352.11;TU398.9

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