Experimental research on seismic behavior of masonry structure subjected to failure of bottom piers between windows
XIN Ren;YAO Jitao;ZHOU Tiegang;WANG Qinglin;School of Civil Engineering, Xi′an University of Architecture and Technology;
A multi-point loading reduced-scale pseudo-static test was carried out to study the seismic performance of the masonry wall with uniformly distributed openings, particularly the failure mechanism of the bottom wall piers between windows. The failure pattern, strength, deformation capacity, hysteretic energy dissipation behavior, stiffness deterioration and ductility were investigated. A special examination was given to the failure process and deformation mode of the bottom wall piers between the windows. The test results indicate that the masonry wall piers, with the same failure pattern as the single wall, present different seismic performance, for instance, the slower rise and fall at the peak load, fatter hysteresis curve, less stiffness degradation and better ductility. Based on the failure pattern of the bottom wall pier, the current calculation methods on the bearing capacity of the wall with openings coincide with the test results, but fail to realize the failure pattern with the combined weak and strong structural components. The experimental study provides the reference to realize a more reasonable design method and ductile failure pattern of the masonry structure.