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Title |
Cyclic Load Testing for Weak Axis Joints Connected with SRC Column and RC Beams
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Authors |
문정호 ; 임재형 ; 오경환 ; 김성호 ; 이강민 |
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Keywords |
SRC기둥-RC보 접합부 ; 정착길이 ; 표준갈고리 ; 연결철판 SRC column-RC beam joint ; development length ; standard hook ; wing-plate welding |
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Abstract |
An objective of this study is to evaluate the structural performance of the weak axis SRC column-RC beam joints by experiments. Although one of common joint types is the connection with standard hooks, it has been required to examine its safety and to settle problems of the joint among practical engineers. Specimen types are classified into two categories, namely the type of standard hook and the type of shape improvement. The first one is consisted of three specimens which are reference type, development length modification type, and development length supplement type. Three specimens for shape improvement were made with variations on the arrangement of longitudinal reinforcements and the development length. Test results based on cyclic loadings were discussed with load-deflection curves, maximum strengths, strength degradations beyond the maximum. It was found that the standard hook types showed premature failures and consequent strength degradations due to splitting of joint concrete. However, satisfactory performance was obtained with the shape improvement type with wing-plate welding. No premature failures and strength degradations were detected with the specimens.
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