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Title |
Splice Performance Evaluation of Fastening Coupler According to the Slope Length of Internal Fasteners
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Authors |
정현석(Hyun-Suk Jung) ; 최창식(Chang-Sik Choi) |
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DOI |
https://doi.org/10.11112/jksmi.2022.26.4.11 |
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Keywords |
커플러; 기계식 이음; 내부 조임쇠; 경사길이; 이음성능평가 Coupler; Mechanical splicing; Internal fasteners; Slope length; Splice performance evaluation |
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Abstract |
In this study, in order to improve the splice performance of mechanical couplers, two new mechanical couplers with different connection modes were developed with rebar(SD400). The stress analysis of mechanical couplers with two different connection modes was carried out. Uniaxial tensile tests were carried out with type of steel, connection mode and the slope length of internal fastener as variables to analyze the influence on the maximum tensile strength. Building upon this previous work, the specimens that met the code in uniaxial tensile test were fabricated and static loading test and cyclic loading test were performed on the basis of Korean code(KS D 0249). The results of this research are as follows; (1) The tensile strength of steel and the slope length of internal fasteners have a certain influence on the maximum tensile strength. (2) The connection mode has some influence on the stiffness, slip and stiffness reduction rate of the connecting rebars. The results verify the feasibility of the proposed enhanced mechanical coupler in the field.
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