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• PHC 파일을 기둥재로 적용하기 위한 실험적 연구

– 저자 : 김성진, 김성배, 이창남, 목진오, 허건영, 이병락, 김상섭

The purpose of this study was to apply PHC column in underground parking lot. The load is transferred to the concrete core from a steel beam through the contacted face between an in-filled concrete and the inner surface of a steel
tube. And a Push-out test was performed to investigate the load transfer mechanism. The main parameters considered for this study included thickness of steel tube, a welding quantity, interval of shear key. Test results were summarized
to confirmed load transfer behavior between the concrete and steel tube for each experimental parameter, using the analytical approach to verify experimental results.

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• 원심력을 이용한 사각형 CRC 합성 기둥의 휨 및 압축성능 평가

– 저자 : 정재천, 이창남, 이승환, 김형섭

Centrifugal Reinforced Concrete(CRC) column developed by SEN Engineering is able to obtain the maximum capacity as for reinforced concrete because of its manufacturing method that utilizes centrifugal forces same for PHC and inserts a welded Pre-Fabricated Rebar instead of a pre-stressed wire, decreasing compressive strength, used for PHC. Therefore, CRC can be more economically and rapidly applied to the construction site than Precast Concrete. This research was conducted to verify structural performance of CRC column through compression and bending tests. As the result, CRC column was demonstrated its actual strength higher than compressive strength and bending strength in accordance with KBC 2013.

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• PHC 파일에 부착한 밴드플레이트의 부착강도에 관한 연구

– 저자 : 김성배, 김성진, 김상섭

The purpose of this study was to apply column with PHC pile. The operated load on PHC pile are transferred to the concrete core from a steel beam through a contacted face between an in-filled concrete and the interior surface of a steel band plate. And a push-out test was performed to investigate the load transfer mechanism and the bond strength of band plate. The main parameters considered for this study included thickness of steel band plate, a welding quantity, interval of shear key. Test results were summarized to confirmed load transfer behavior between a concrete and steel band plate for each experimental parameter, using the analytical approach to verify experimental results.