This paper deals with the H.A.S. method, which is the non-open excavation method by using steel pipe jacking method. In order to determine the lateral optimal placement of the support during the internal excavation, the commercial finite element program was used to analyze.

Abstract
 1. 서 론
 2. 해석계획 및 방법
 3. 해석결과 및 고찰
 4. 결 론
 참고문헌

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