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초록

영어

The purpose of this study is to investigate the bond characteristics between SD500 reinforcing bar and grout mortar in steel pipe splice. To accomplish this objective, totally 6 full-sized specimens were made and tested under the monotonic and cyclic loading. All specimens were instrumented with strain gauges at the strategic locations of sleeve and reinforcement. The
experimental variables adopted in this study include development length of reinforcing bar, size of reinforcement and loading method, among others. The followings were found: 1) With the increase of load applied to the specimen, the overall change of bond characteristics between reinforcing bar and mortar was similar to the existing test result. For typical example, bond stress between i～(i+1) range increased suddenly and was highest when the reinforcement yielded in i location. 2) The bond stress between the sleeve end and the position 1.0d apart from the end appeared to be lower from low load stage, compared with the inner locations of the sleeve. 3) The bond stress between reinforcement and mortar appeared to increase with the decrease of the development length of reinforcing bar, when the load of specimen reached its highest level.

목차

1. 서론
2. 실험
 2.1 실험체 계획 및 제작
 2.2 재료의 역학적 특성
 2.3 가력 및 측정방법
 2.4 실험 결과
3. 철근과 모르타르 사이의 부착 특성
 3.1 부착응력과 슬립의 산정
 3.2 철근과 모르타르 사이의 부착응력과 슬립 관계
 3.3 철근과 모르타르 사이의 부착응력 분포 추이
4. 결론
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키워드

강관 슬리브 철근이음 SD500 철근 충전 모르타르 부착 특성 부착응력 슬립 Mortar-filled Steel Pipe Splice SD500 Reinforcing Bar Grout Mortar Bond Characteristics Bond Stress Slip

저자

• 김형기 [ Kim, Hyong-Kee | 정회원, 강원대학교 공학대학 건축공학전공 부교수, 공학박사 ] 교신저자

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