Journal of the Korean GEO-environmental Society (한국지반환경공학회 논문집)

Korean Geo-Environmental Society (한국지반환경공학회)
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Reliability Evaluation of Lateral Spring Constant Applied in Design of Pile Foundation for Bridge Abutment

교대 말뚝기초 설계 시 적용되는 횡방향 스프링정수의 신뢰성 평가

  • Do, Jongnam (Safety&Disaster Prevention Research Division, Korea Expressway Corporation Research Institute) ;
  • Kim, Nagyoung (Safety&Disaster Prevention Research Division, Korea Expressway Corporation Research Institute) ;
  • Lee, Hyunseong (Planning Coordination Office, Korea Expressway Corporation)
  • Received : 2020.03.26
  • Accepted : 2020.04.28
  • Published : 2020.05.01
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Abstract

In this study, the reliability of the lateral spring constant (k1) applied during design of pile foundation for bridge abutment was evaluated. To do this, the reliability of the factors related to the prediction of the lateral displacement of the abutment pile foundation, which was designed based on the displacement method proposed by Chang (1937), was analyzed. The data used for analysis were the design statements of ◯◯ bridge and ◯◯ IC2 bridge. Then, it was derived by comparing with the numerical analysis (p-y analysis) based on the basic data.

본 연구에서는 교대 말뚝기초 설계 시 적용되는 횡방향스프링정수(k1)의 신뢰성에 대한 평가를 실시하였다. 이를 위하여 Chang(1937)이 제안한 변위법으로 설계된 교대 말뚝기초의 횡방향변위 예측관련 인자의 신뢰성을 ◯◯교와 ◯◯IC2교의 설계계산서를 기반으로 수계산 및 수치해석(p-y 분석)으로 파악하였다. 그 결과, 변위법 보다 수치해석으로 산정된 k1값이 더 작게 나타났다. 이는 시공 시 발생되는 횡방향 변위가 설계단계에서의 예측값 보다 더 크게 발생할 수 있음을 의미한다.

Keywords

References

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