논문 상세보기
In regions of low-to-moderate seismicity, various types of lap splices are used for longitudinal reinforcement of columns at the plastic hinge zones. The seismic performance of such lap spliced columns, such as strength, deformation capacity, and energy dissipation, is affected by material strengths, longitudinal re-bar size, confinement of hoops, lap splice location, and lap splice length. In the present study, cyclic loading tests were performed for columns using three types of lap splices (bottom offset bar splice, top offset bar splice, and splice without offset bend). Lap splice length(40db and 50db) was also considered as test parameters. Ties with 90-degree end hooks were provided in the lap splice length. The test results showed that strength, deformation capacity, and energy dissipation of columns significantly differed depending on the details and the length of lap splices. The bottom offset bar splice showed high ductility and energy dissipation but low strength; on the other hand, the top offset bar splice and the splice without offset bend showed high strength but moderate ductility and energy dissipation.
2. 겹침이음 규정 검토
3. 실험 계획
3.1 실험체 상세
3.2 가력 및 계측 방법
4. 실험결과 및 분석
4.1 하중-변위비 관계 및 파괴모드
4.2 에너지 소산능력
4.3 철근 변형률
5. 콘크리트 부착요구와 겹침이음상세
5.1 이음길이
5.2 이음상세
6. 결 론
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