In the case of the port mooring facility, jetties with piles are mainly applied in soft ground conditions. In the three-dimensional modeling for the structural analysis of jetties with piles, the boundary conditions between the pile and the ground are universally applied to the Approximate depth of pile supported method and Elastic subgrade reaction spring method. In this study, p-y curve data for the pile ground condition was generated using the LPILE program, and then the nonlinear spring considering the p-y curve as the pile and ground boundary condition was input and analyzed in the 3D modeling of jetties with piles using the MIDAS civil And the necessity of applying the Nonlinear subgrade reaction spring method by comparison with the result and the analysis result according to the existing analysis method is suggested.

Abstract
 1. 서 론
 2. 기존의 말뚝해석법
  2.1 가상고정점 방법(Approximate depth of pile supported method)
  2.2 탄성 지반반력 스프링법(Elastic subgrade reaction spring method)
 3. 구조해석 시 p-y곡선을 고려한 비선형 지반 스프링 적용
  3.1 비선형 지반반력 스프링법(Nonlinear subgrade reaction spring method)
  3.2 LPILE를 활용한 p-y 곡선 생성
  3.3 잔교 모델링
  3.4 해석결과
 4. 결론 및 고찰
 참고문헌

• 오정근(한국시설안전공단 진단본부 수리시설안전실, 토목구조 기술사) | Oh, Jeong Keun
• 전우용(대한전문건설협회, 항만 및 해안 기술사) | Jun, Woo Yong
• 이재성(한국시설안전공단 진단본부 수리시설안전실) | Lee, Jae Seong
• 김현국(한국시설안전공단 진단본부 수리시설안전실) | Kim, Hyun Guk
• 김수종(한국시설안전공단 진단본부 수리시설안전실) | Kim, Su Jong