시멘트 콘크리트 포장의 구조진단 및 중점보수기법에 관한 연구(III) : (A Study on the Structural Evaluation and Major Rehabilitation Procedure for Concete Pavement)

다국어 초록 (Multilingual Abstract)

The use of concrete pavements is increasing by virtue of durability and excellent load resisting capacity. But cracks and demage in concrete pavements may be occurred by continuous reciclic load, as time goes by. A recent survey showed that the defects of JCP consists of joint seal damage, joint spalling, patching deterioration and transverse crack, and that the defects of CRCP mainly consists of corner crack near the transversely cracked area. The purpose of the present study is to explore the characteristics of fatigue behavior, failure mechanism and to present realistic formula for fatigue life. The evaluation of reliability and serviceability of FWD is also studied. For this purpose, a series of static load and fatigue tests of JCP and CRCP were carried out The test members were sized to 1/3-1/4 of one lane JCP and CRCP and test variables are the locations and magnitude of load, crack spacing and the locations of reinforced bars. From the static load tests, JCP members are failed at 8 ton for static load and it is found that the loading transfer capacity of JCP is dropped rapidly. For the center loading the specimen of CRCP members failed at 13 ton and for the corner loading of that at 8 ton. It is found that the crack resisting capacity of CRCP is better than that of JCP. From fatigue tests for CRCP members, realistic formula for fatigue life is suggested. The value obtained by this formula is similar with that by VESAC and the fatigue life by traffic loads are highly evaluated, as this test results is only considered the traffic loads except environmental condition. Compared the field test with laboratory test for FWD, it is an equipment useful to maintenance and manage of the concrete pavements.

목차 (Table of Contents)

• 표목차
• 그림목차
• 요약
• ABSTRACTS
• 1. 서론
• 1.1 연구 배경
• 1.2 연구 목적
• 1.3 연구 범위
• 2. 시멘트 콘크리트 포장의 기본 이론
• 2.1 포장의 종류
• 2.2 줄눈콘크리트 포장
• 2.3 연속철근 콘크리트 포장
• 2.4 해석이론 및 해석기법
• 2.5 시멘트 콘크리트 포장 구조해석프로그램
• 2.6 시험체의 상사법칙
• 2.7 시멘트 콘크리트 포장의 파괴기준식
• 3. JCP의 피로실험
• 3.1 시험체의 상사
• 3.2 시험체의 배합설계
• 3.3 시험체의 구조해석
• 3.4 시험체의 설계 및 제작
• 3.5 정적 하중 재하 실험
• 3.6 피로실험
• 3.7 소결
• 4. CRCP의 피로실험
• 4.1 시험체의 상사법칙
• 4.2 시험체의 배합설계
• 4.3 시험체의 유한요소해석
• 4.4 시험변수
• 4.5 시험체의 설계 및 제작
• 4.6 정적 하중 재하 실험
• 4.7 피로실험
• 4.8 소결
• 5. FWD를 이용한 강성 포장의 평가 방법과 이론
• 5.1 포장의 유지 및 보수
• 5.2 비파괴시험과 포장의 처짐 기준
• 5.3 포장 처짐측정장비의 분류
• 5.4 FWD를 이용한 포장의 유효 구조 능력 평가
• 5.5 FWD 현장 실험을 통한 탄성계수와 잔존 수명의 추정
• 5.6 소결
• 6. 결론
• 참고문헌
• 부록
• A. 사진첩
• B. JSLAB INPUT FORM
• C. ELCON INPUT MUNUAL