Shearing strength and fracture mechanism of lath-mortar wall, 1: Analysis of shearing deformation of mortar wall with lath board
2006
Miyamura, M.(National Inst. for Land and Infrastructure Management, Tsukuba, Ibaraki (Japan)) | Ohta, M. | Sato, M.
This research dealt with the shearing strength properties of mortar exterior walls with wooden lath which are used for conventional wooden house. The information is needed because mortar walls detach easily from their wooden frames in severe earthquake. First we analyzed displacement and resistance to applied stresses and moments on each staple nail joint between mortar and lath. Then, in order to verify the analytical results, we performed wall racking tests on lath mortar exterior walls and examined their ductility, strength and fracture behavior. As a result, it was proved that the proposed analysis method based on the information of joint behavior is adequate to estimate the deformation and resistance properties of the mortar exterior walls. It was also clarified that the exterior finishing materials contribute remarkably to the improvement of horizontal shear resistance of the wall, and its composition affects the strength of the wall and the damage level.
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