单层足尺砖混结构的拟动力试验及分析

建立了一个单开间带圈梁构造柱的砖混结构足尺模型,应用拟动力试验技术,模拟了一个单层十开间砖混结构在地震作用下的反应;观测了结构在荷载作用下的破坏过程;编制了结构地震反应分析程序进行结构位移反应计算,并将计算结果与试验结果对比;采用现有的一些理论公式计算结构极限承载力,并与试验结果进行比较。结果表明:增设圈梁构造柱的该类单层砖混结构具有非常强的抗震性能,可以抵御地震动峰值加速度为1.6g的地震作用;设置圈梁构造柱结构的极限承载力比未设置圈梁构造柱结构的提高了20%～50%;增设抗震构造可以明显提高砌体结构的抗震性能.

Pseudo-Dynamic Test and Analysis of Single-Storey Full-Scale Masonry Structure

A full-scale model of a one-bay masonry structure with ring beams and tie columns was established.Then,the seismic response of a single-storey ten-bay masonry structure was simulated by pseudo-dynamic tests,and the failure process of the specimen under loads was observed.Moreover,a seismic response analysis program for the test model was compiled to calculate the structural displacement response,and the results were compared with the test ones.Finally,the theoretical bearing capacity of the test structure was calculated by using different analytic equations,and the results were also compared with the test ones.It is found that(1) the structure as a prototype of the test model with ring beams and tie columns,which can withstand the seismic excitation with a peak ground acceleration of 1.6 g,exhibits satisfactory seismic behavior;(2) the maximum bearing capacity of the structure with ring beams and tie columns increases by 20%~50%;and(3) the details of seismic design are helpful in improving the seismic behavior of masonry structures.