Experimental Investigation on a New Crack Inducing Contraction Joint System Applied to Structural Walls

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  • 耐震壁を対象とした新型ひび割れ誘発目地に関する実験研究
  • タイシンヘキ オ タイショウ ト シタ シンガタ ヒビワレ ユウハツ メジ ニ カンスル ジッケン ケンキュウ

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This study aimed at developing a new crack inducing contraction joint system, which enables us to decrease additional thickness of section width. This system adopts bumped steel plates embedded in the member section as well as notch shape section defect on wall surface. To verify the system's crack concentration ability, direct tensile loading test for beam specimens with the joins was implemented. As a result, the proposed joints successfully demonstrated superior crack inducing performance to the existing ones. Next, wall specimens with the contraction joints were subjected to shear loading to demonstrate shear structural performance, which showed those joints did not deteriorate structural performance. Finally crack inducing performance was confirmed in an actual structure. In the application, cracks were effectively induced in the joints, and the practicality of the joint system was successfully demonstrated.

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