Shape Decision and Shear Experiment of High-Shear Ring Anchor for Steel-Concrete Connection

강재 접합용 고전단 링앵커의 형상 개발과 전단실험

Abstract

The demand for reinforcement in accordance with remodeling, seismic retrofit, and change of use of the existing structure is increasing. Originally, shear wall new and extension method has been adopted a lot as seismic retrofit methods. Recently, dry seismic retrofit method that uses structural steel is mostly adopted in order to minimize spatiotemporal aspect and underpinning that occurs when a construct shear wall. We redesigned the form of old and new concrete joint high-shear ring anchor that was developed according to recent reinforcement method and determined construction method. Shear tests were performed on High-Shear Ring Anchor for steel-concrete connection. Comparison with 4 tests shows that the average of test-to-prediction ratios is 1.01.

Figure 1. 고전단 링앵커 형상

Figure 2. 철근콘크리트구조물의 강재 프레임 보강

Figure 3. 기존 고전단 링앵커 상세

Figure 4. 기존 고전단 링앵커 결합 형상

Figure 5. 전단강도 평가식과 실험값의 비교

Figure 6. 강재용 고전단 링앵커 상세

Figure 7. 강재용 고전단 링앵커 결합 형상

Figure 8. 강재용 고전단 링앵커의 전단력 저항원리 및 앵커로드에 유발되는 인장력

Figure 9. 강재용 고전단 링앵커의 시공방법

Figure 11. 실험체 상세 (M16 실험체)

Figure 12. 강재용 고전단 링앵커 후설치 과정

Figure. 13 실험체 파괴 양상

Figure. 14 하중-변위 곡선

Figure 10. 가력 장치도

Table 1. 신구 고전단 링앵커 비교

Table 2. 실험체 목록

Table 3. 예상강도와 최대강도