Abstract

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Title:: Low Axial Compression Ratio on Seismic Behavior of Self-insulation Mortarless Reinforced Masonry Shear Walls

Author(s):: HUANG Liang; WANG Qi-ming; CHEN Wei; WANG Lu; College of Civil Engineering, Hunan University

Keywords:: shear wall; axial compression ratio; seismic behavior; self-insulation; mortarless reinforced masonry

Abstract:: The self-insulation mortarless reinforced masonry shear wall was proposed, and the problems of traditional masonry shear wall which needed mortar and needed to do internal or external insulation layer to make wall insulation were solved. Three specimens with different axial compression ratios were tested under quasi-static low cyclic loads to investigate the seismic behavior, failure mechanism, and the influences of axial compression ratio on failure modes, hysteretic curves, bearing capacity, ductility, stiffness and energy dissipation. According to the experimental phenomena and analysis results, the suggestions for construction and design of wall were given. The results show that the failure modes of specimens are similar to those of common masonry shear walls, and the damage area is mainly concentrated in the range of four leather building blocks. The walls are able to maintain good integrity when they are broken. The bearing capacity of walls increases with the increasing of axial compression ratio, and the failure mode turns from flexural failure to shear failure. The bearing capacity of test wall is in good agreement with the calculated values.