Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)

Korean Geotechnical Society (한국지반공학회)
권호 표지

Numerical Evaluation of Behavior on Bridge Foundation Reinforced by Battered Micropiles

경사진 마이크로파일로 보강된 교량기초의 거동에 관한 수치 해석적 연구

  • Jung, Dong-Jin (Dept. of Civil & Environmental Engineering, Dankook University) ;
  • Park, Seong-Wan (Dept. of Civil & Environmental Engineering, Dankook University) ;
  • Kwak, Ki-Seok (Dept. of Geotechnical Engineering Research, Korea Institute of Construction Technology) ;
  • Lee, Ju-Hyung (Dept. of Geotechnical Engineering Research, Korea Institute of Construction Technology)
  • 정동진 (단국대학교 토목환경공학과) ;
  • 박성완 (단국대학교 토목환경공학과) ;
  • 곽기석 (한국건설기술연구원 지반연구부) ;
  • 이주형 (한국건설기술연구원 지반연구부)
  • Published : 2006.03.24
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this study is to evaluate the performance of existing bridge foundation reinforced by battered micropiles. In order to do numerical method using a Finite element program was used to predict the micropile behavior and quantify their reinforcing effect to existing bridge foundations. In addition, effect of battered micropiles on existing foundations was compared with vertically reinforced bridge foundations. Based on the study performed, it was found that the use of battered micropile is more efficiently reducing displacement of existing foundation than vertically installed micropiles under vertical and horizontal loadings respectively. The batter angle of micropile was also found effective about $15^{\circ}\sim20^{\circ}$ to reduce the vortical displacement. The horizontal reinforcement effect is continuously larger with an increase in batter angle. So, it is believed that the results presented could give an idea to enhance in-service performance of existing bridge foundations reinforced by micropiles.

Keywords