再生混凝土框架抗震性能试验研究

Experimental research on seismic behavior of recycled concrete frames

通过2榀再生骨料掺量分别为25%、50%的再生混凝土框架和1榀普通对比混凝土框架的低周反复加载试验,研究了再生混凝土框架的受力全过程、开裂荷载和极限承载力、破坏形态,分析了再生混凝土框架的滞回曲线、骨架曲线、变形性能、耗能能力等抗震性能,并和普通混凝土框架进行了对比分析。研究结果表明,随着再生骨料掺量的增加,再生混凝土框架的极限承载力、变形能力、耗能能力等抗震性能没有明显降低,再生混凝土框架具有较好的抗震性能,再生混凝土框架应用于实际工程是可行的。文中研究成果可为再生混凝土框架结构的工程应用提供依据。

Based on low-cyclic reverse lateral loading tests on two recycled aggregate concrete frames with recycled aggregate proportion of 25% and 50% respectively, the seismic behavior of the recycled concrete frames is studied. The failure mechanism, the cracking load, the ultimate strength,the hysteretic characteristics ,the skeleton curve,the ductili- ty, deterioration of stiffness ,the energy-dissipation and deformation behavior are analyzed. The experimental results indi- cate that the recycled aggregate concrete frames have well seismic performance, and with the increasing of recycled ag- gregate proportion, the seismic performance of the recycled aggregate concrete frames have not decreased obviously, which indicate that the recycled aggregate concrete frame applied to practical engineering is feasible. This studied result can be provided for references of the engineering application of the recycled aggregate concrete frames.