한국지반공학회:학술대회논문집 (Proceedings of the Korean Geotechical Society Conference)
- 한국지반공학회 2005년도 지반공학 공동 학술발표회
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- Pages.221-228
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- 2005
해상교량기초의 설계 사례
Case Study on Foundation Design of over-water Bridge
- Jang, Hak-Sung (Foundation Laboratory of Yooshin Corporation Engineering.) ;
- Jang, Young-Il (Foundation Laboratory of Yooshin Corporation Engineering.) ;
- Choi, Young-Seok (Foundation Laboratory of Yooshin Corporation Engineering.)
- 발행 : 2005.10.07
초록
The economic growth brought the demand of bridge connected to island and land increasingly in Korea. Therefore, Civil engineer has faced a lot of problem to be considered such as structural stability, economic feasibility and constructional method. At the bridge site to be constructed, the depth of water is about 24m, the thickness of weathered rock overlaying bed rock is thicker than 36m. If open caisson foundation is supported in bed rock, the hight of foundation is about 60m. It is difficult to construct in these conditions. If open caisson foundation is supported in weathered rock, the size of the foundation should be increased. And If we apply the pile foundation, the higher construction cost will be needed. Under the circumstances, we need a new foundation type-composite foundation that is consisted of open caisson and cast-in-place piles. Because the design concept of composite foundation is not presented in Korea Bridge Design Standard, we are willing to clear the bearing behavior of composite foundation by numerical analysis in this paper.