KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
권호 표지

Approximate force Equations for Soil-Steel Bridges

지중강판 교량의 근사적 단면력 계산식

Choi, Dong-Ho;Park, Sang-Il
최동호;박상일

  • Published : 2003.01.31

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Abstract

This paper proposes force equations (thrust, moment) of soil-steel bridges through the finite element analysis. The conditions for maximum thrust and maximum moment are determined from the analysis of soil-structure interaction during the three construction stages, such as backfill to the crown, backfill to the soil cover, and live loads. The proposed form of thrust and moment equations are deduced from the analysis of behaviour. Finally, the coefficients used in the proposed equations are determined from a large number of analyses for the various geometries and the soil-structure relative stiffness under the conditions of maximum thrust and maximum moment. These coefficients are compared with those of Duncan method.

본 연구는 유한요소해석을 통해 아치형 지중강판 교량의 단면력(압축력, 휨모멘트) 계산식을 제안하였다. 지반-구조물 상호작용을 고려한 3단계의 시공과정(정점부까지의 뒷채움, 토피고까지의 뒷채움, 활하중 재하)에 따른 거동분석으로부터 최대 단면력을 유발하는 재하상태를 도출하였고, 이러한 거동분석 결과로부터 단면력 계산식의 형태를 결정하였다. 또한, 최대 단면력을 유발하는 조건하에서 다양한 기하형태 및 지반-구조물 상대강성을 고려한 유한요소해석 결과로부터 제안된 단면력 계산식을 구성하는 계수를 결정하였으며, 이를 Duncan에 의해 제안된 단면력 계산식 계수와 비교하였다.

Keywords

References

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