带外围预制混凝土填充墙剪力墙结构动力特性测试与分析

Test and Analysis on Dynamic Characteristics of Shear Wall Structure with Perimeter Precast Concrete Filled Walls

以某栋带外围预制混凝土填充墙剪力墙结构为对象,测试了结构的前3阶自振频率,采用有限元软件分析了剪力墙结构带和不带外围预制混凝土填充墙的动力特性,并与测试数据进行对比。结果表明,外围预制混凝土填充墙提高了剪力墙结构第1频率18.3%;有限元分析结果与测试数据相差10%以内,说明针对预制混凝土填充墙的有限元建模方法是合理的;考虑外围预制混凝土填充墙影响的剪力墙结构周期折减系数为0.845,处于规范规定的0.8~1.0范围内。

Taking a shear wall structure with perimeter precast concrete filled walls as research object,the three natural frequencies of the shear wall structure were tested,and the dynamic characteristics of the shear wall structure with and without perimeter precast concrete filled walls were analyzed by finite element method,and were compared with the test data.The results show that the first frequency of the shear wall structure is increased by 18.3%;the difference between the finite element analysis results and the test data is less than 10%,showing the finite element modeling method for precast concrete filled wall is reasonable;considering the influence of perimeter precast concrete filled wall,the period reduction factor of shear wall structure is 0.845,which is in the range of 0.8~ 1.0 stipulated in the specification.