Abstract
For the permanent Uni-wall system method, horizontal shear reinforcements are not placed in the joints between the circular casing pile and special casing pile. The joints of piles consequently have a plain concrete section. This study aims to evaluate the shear performance of the plain concrete cross-section found in the permanent Uni-wall system method. This paper analysed the existing design code for a plain concrete cross-section, examined the shear performance of joints through shear experiments, and then compared the results with those from a structural analysis. From the test results, it was found that the minimum shear strength of all specimens had 2·98 times greater bearing capacity than the nominal shear strength.
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