PURPOSES : This study was conducted to investigate the stress distribution and resulting effects in the joint between CRCP and JCP when temperature deformation occurs. METHODS : The tie bars, CRCP and JCP pavements, and lean concrete base were created as three-dimensional finite element models using ABAQUS, a general-purpose finite element analysis program. Contact stress analysis was performed between rebar and JCP and between JCP and lean concrete base layer. In the section where stress concentration occurred, the degree of damage was estimated using the CDP model. RESULTS : Since the domestic CRCP does not have a separation layer between the base layer and the surface layer, it was found that when connected to a JCP where the base layer and the surface layer are completely separated, stress concentration occurs around the tie bar at the connection point. Analysis results using the CDP model showed that 25 to 32 mm around the reinforcing bar exceeded the elastic range of concrete. CONCLUSIONS : At the point where CRCP and JCP are connected, local stress concentration is inevitable because the friction and bonding conditions with the base layer and the degree of curling deformation restraint by CRCP rebars are different, and design improvement is expected through life cycle cost and long-term measurement analysis.

1. 서론
2. 해석모델 및 입력변수
    2.1. 경계조건 및 재료물성
    2.2. 콘크리트 온도구배
3. 탄성해석을 통한 응력조건 조사
    3.1. 해석방법
    3.2. 상향컬링 시 응력상태 비교
    3.3. 하향컬링 시 응력상태 비교
4. 소성해석을 통한 응력상태 조사
    4.1. 소성해석 재료정의
    4.2. 하향컬링 시 응력 및 소성변형 상태 비교
    4.3. 상향컬링 시 응력 및 소성변형 상태 비교
5. 결론

• 유태석(정회원 · 한국도로공사 도로교통연구원 연구위원) | Yoo Tae Seok (Research Fellow Korea Expressway Corporation Research Institute, 24 Dongtansunhwandaero 17-gil, Hwaseong-si Gyeonggi-do, 18489 Republic of Korea) 교신저자