全再生骨料混凝土高剪力墙的振动台试验

Shaking Table Test on Recycled Aggregate Concrete High-rise Shear Walls

为了解全再生骨料混凝土高剪力墙的抗震能力,并与普通混凝土高剪力墙的抗震能力进行比较,进行了2个高剪力墙模型的振动台试验研究。2个试验模型中,1个为普通混凝土高剪力墙,1个为粗骨料、细骨料均为再生骨料的混凝土高剪力墙。通过对实测数据的对比分析,研究了全再生骨料混凝土高剪力墙在弹性和开裂后弹塑性阶段的动力特性、动力响应及其最终破坏形态。结果表明:全再生骨料混凝土高剪力墙的抗震能力低于普通混凝土高剪力墙的抗震能力,建议实际工程中采用抗震性能相对较好的再生粗骨料混凝土剪力墙。

In order to ascertain the seismic performance of the recycled aggregate concrete high-rise shear walls and compare with the normal concrete high-rise shear walls,the study of shaking table tests on two models of high-rise shear walls were carried out.One of the models was made by normal concrete,and the other one was made by recycled coarse aggregate,fine aggregate concrete.The dynamic characteristics at elastic and elasto-plastic stage after cracking,the dynamic response and its final failure mode were studied by analyzing and comparing the results from the tests.The results show that the seismic performance of recycled aggregate concrete high-rise shear walls is worse than that of the normal concrete high-rise shear walls.It is suggested that recycled coarse aggregate concrete shear walls with better seismic performance can be applied in practical engineering.