목차

초록 ·················································································································· i
목차 ················································································································· ii
Figure list ································································································· iv
Table list ·································································································· v
1. 서론 ··········································································································· 1
1.1연구의 필요성 ···················································································· 1
1.2 연구의 방향 ······················································································ 3
2. 이론적 배경 ····························································································· 5
2.1 배관에 작용하는 응력 ································································ 5
2.1.1 내압에 의한 응력 ···························································· 5
2.1.2 지반침하에 의한 응력 ···················································· 7
2.1.3 Mohr Coulomb 식 ···················································· 10
2.2 배관두께를 결정하는 식 ·························································· 12
2.3 극한지 토양 환경 ······································································ 13
3. 해동침하에 대한 유한요소법 적용 ··················································· 18
3.1 해석모델 구성 ············································································ 18
3.1.1 배관 모델 및 물성 ························································ 20
3.1.2 토양 모델 및 물성 ························································ 23
3.2 해석방법 및 경계조건 ······························································ 27
3.3 해석 시 가정사항 ······································································ 30
4. 해석결과 ································································································· 32
4.1 배관매설 깊이에 따른 영향 ···················································· 33
4.2 해동침하 길이에 따른 영향 ···················································· 37
4.3 해동침하 깊이에 따른 영향 ···················································· 44
5. 결론 ········································································································· 49
참고문헌 ······································································································· 51
Abstract ···································································································· 53