A Study on the Evaluation of the Earthquake Resistant Performance of Mud-Plastered Walls

Abstract eng:
Mud-plastered walls have been acting as earthquake resisting elements in Japanese timber houses from the old times. However, their earthquake resistant performance has been under-evaluated by the design codes, mainly because of the lack of experimental data. This study was carried out to clarify the shear resisting mechanism of mud-plastered walls and propose the numerical analysis model to estimate the earthquake resistant performance of every mud-plastered wall in Japan without shear loading tests. First, shear loading tests of mud-plastered wall specimens with various types were done. From the test results, shear resisting mechanism of mud-plastered walls was clarified. Secondly, numerical analysis model of the mud-plastered wall by means of Rigid bodiesspring model was proposed. The analysis results of the wall specimens showed a good agreement with the failure modes, shear stiffness and shear strengths obtained from the shear loading tests. Therefore, it turned out to be cleared that the proposed numerical analysis model is appropriate for the specimens in the shear loading test.

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