Bow-Tie형식의 수평회전연결재를 이용한 프리캐스트 콘크리트 연결부 개발 및 해석적 성능 검증

초록

In the case of a precast concrete (PC) method, segments are assembled on site after factory production, and it is essential to secure the stability and structural performance of the segment connection. However, in the field, a PC connection is simply filled with mortar or made using a steel frame. Therefore, unequal displacement frequently occurs on a PC segment connection under external loads such as earth pressure and fatigue loads. In the case of a PC segment used in a railroad structure, horizontal connection of a segment is most important in order to keep the structure stable under railway vibration. Therefore, in this study, a bowtie-type horizontal rotation connector was developed. The connector is connected not only in the vertical direction, but also the horizontal direction for sequential construction of PC concrete. The connector"s performance was analytically verified using RC, PC with bowtie connection, and PC with rotating bowtie connection on curved and straight members. The developed connector could solve the problems caused by stress concentration on a segment connection due to earth pressure in a vertical shaft. Also, it could be possible to economically segment connection/connector design for railway vibration.

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