The purpose of this study is to establish a foundation for design guidelines by characterizing the behavior of a CRCP tapered-end terminal connected to a mainline CRCP. A pilot construction was conducted to determine the deformation and displacement within the CRCP transverse crack, at the end and at the connection. Various measuring instruments were installed and monitored to evaluate these trends. Although the reinforcement stress was lower than that of the main line, the shrinkage and expansion at the ends showed no significant deviation from the main line CRCP. Tie-bar measurements indicated that tensile deformation occurred on the inner side near the longitudinal construction joint, whereas compressive deformation occurred on the outer side. Furthermore, these results indicated the superposition of bending induced by longitudinal displacement and tension caused by transverse displacement along the LCJ. Additionally, the strain increased as the tie-bar installation propagated closer to the CRCP end. Through regression analysis, the thermal displacement at the end expansion joint was determined to be 0.1122 mm per unit temperature. The longitudinal displacement along the longitudinal construction joint was selected at the ends and attenuated rapidly within a range of 2–4 m. The recorded daily and seasonal displacements at the end were 0.38 and 2.73 mm. Although the longitudinal reinforcement strain at the tapered ramp terminal was lower than that at the main line, the end displacement exhibited a similar trend. To address the excessive bending observed near CRCP expansion joints, this study proposed a method for determining tie-bar offset distances, thereby establishing a technical basis for improved pavement design at tapered sections.

ABSTRACT
1. 서론
2. 시험구간 및 계측방법
    2.1. 시험구간 개요
    2.2. 계측 방법
3. 철근 및 콘크리트의 변형
    3.1. 종방향 철근의 변형
    3.2. 타이바 철근의 변형
    3.3. 콘크리트의 변형
4. 단부 팽창줄눈의 종방향 변위
5. 종방향 시공줄눈의 변위
    5.1. 계측방법
    5.2. 종방향 시공줄눈의 종/횡방향 변위
6. 결론
REFERENCES

• 유태석(한국도로공사 도로교통연구원 연구위원) | Yoo Tae Seok (Research Fellow Korea Expressway Corporation Research Institute, 24 Dongtansunhwan-daero 17-gil, Hwaseong-si Gyeonggi-do, 18489 Republic of Korea) Corresponding author