加密预制构造柱约束砌体结构抗震性能

Preliminary study on seismic behavior of masonry structures with encrypted fabricated tie-columns

随着建筑产业化的兴起,预制式构造柱约束砌体结构受到越来越多的关注。为验证预制构造柱约束砌体结构的抗震性能以及其改进构造柱布置方案的效果,采用数值模拟方法对6度区与7度区两组模型的静动力弹塑性抗震性能进行了分析,对比了现浇构造柱、预制构造柱、加密预制构造柱模型的变形能、层位移、层间位移角以及结构整体耗能特征。分析表明:采用加密构造柱的改进方案并未明显改变原预制构造柱约束砌体结构的整体刚度,但可大幅度提高其耗能能力,使之与现浇构造柱砌体结构模型基本相当,该改进方案可作为预制构造柱约束砌体结构的设计规定在村镇建筑中使用。

With the rise of the architectural industrialization,the prefabricated structure column is getting more and more attention.In order to verify the performance of the prefabricated constructional column confining masonry structure and the effect of improved design methods,this paperanalysed the static dynamic elastic-plastic seismic performance on the two groups of masonry structures in the case of the earthquake of 6and 7degree.comparing the deformation energy,layer displacement,inter story drift angle and the structure energy consumption of the cast-insitu structural column,prefabricated structural column,and encrypted prefabricated structural column.The analysis shows that the improved scheme has not changed the rigidity of the original prefabricated structural columns obviously,but improved the energy dissipation capacity greatly and approached the seismic performance of the precast structure,the improved scheme can be used as the design rule of the prefabricated structural columns to constrain the masonry structure.