对称变维结构整体模型振动台试验研究

Shaking table experiment study of the symmetric trans dimensional structure model

通过两栋1:4大比例对称变维框架的振动台试验,观察了模型结构的开裂、破坏过程,研究了模型在7度多遇烈度、7度基本烈度、7度罕遇烈度和8度罕遇烈度地震作用下的动力特性、侧移刚度、位移反应等的变化情况,以及结构的破坏形式和破坏机理。试验表明模型达到了7度抗震设计要求,错层节点和错层处梁的破坏也没有预计的严重。

Based on the shaking table experiments of two 1:4 scale trans dimensional frame structure models, the dynamic characteristics, side sway stiffness, deformation response under intensity 7 frequently occurred earthquakes, basic intensity 7 earthquakes as well as intensity 7 and 8 seldomly occurred earthquakes were examined. The cracking pattern and failure mechanism of the test models were also observed and discussed. The experiment demonstrates that the two models can fulfill the design requirements for seismic intensity 7, and also shows that the staggered joints and beams at the staggered floors were not damaged so seriously as expected.