J. Korean Soc. Hazard Mitig Search

CLOSE


Journal of the Korean Society of Hazard Mitigation 2013;13(6):335-342.
Published online December 31, 2013.
반복하중에 의한 지오그리드-사질토 접촉면 거동
유지형, 박인준, 김대성
Behavior of Geogrid-Sandy Soil Interface due to Cyclic Load
Ji Hyeung Yoo, Inn Joon Park, Dae Sung Kim
Abstract
This study is to apply and complement disturbed function(D), deviatoric plastic strain trajectory(${xi}_D$) using multi-purpose interface apparatus(M-PIA) developed to analyze the features of the shear stress and the relative displacement on geosynthetic-soil interface of reinforced earth retaining wall when the cyclic dynamic load is pressed. In addition, the feature of shear failure of geogrid- sandy soil interface of reinforced earth retaining wall by cyclic dynamic load was drawn and the parameter disturbed state concept(DSC) constitutive model was calculated by presenting the regression line of the Disturbed functional formula modified from laboratory test data. On the other hand, the program has been designed using FISH language in order to connect these values to FLAC, numerical analysis program and the simulation test was done by using numerical analysis model so that dynamic correlation system method of geogrid-sandy soil was verified in reinforced earth retaining wall.
Key Words: Disturbed state concept; Cyclic load; Geosynthetic; Interface shear behavior; Reinforced earth retaining wall
요지
본 연구에서는 동적반복하중 작용시 보강토 옹벽의 토목섬유-흙 접촉면에 대한 전단응력과 상대변위의 특성을 분석하기 위하여 개발된 다기능 접촉면 전단시험기(M-PIA)를 사용하여, 교란도 함수(D)와 전단소성변형률 상각궤도(${xi}_D$)를 적용하고 보완하였다. 또한 실내시험 자료로 부터 수정된 교란도 함수식의 회귀선을 제시함으로서 동적반복하중에 의한 보강토 옹벽의 지오그리드-사질토 접촉면의 전단파괴 특성을 도출하였고, 교란상태개념(DSC)모델의 매개변수를 구하였다. 또한 이 값들을 수치해석프로그램(FLAC)에 접목시키기 위하여 FISH 언어를 이용하여 프로그램을 설계하였으며, 수치해석 모델을 이용하여 모의시험을 수행하여 보강토 옹벽에서 지오그리드-사질토의 동역학적 상호작용을 검증하였다.
핵심용어: 교란상태개념; 반복하중; 토목섬유; 접촉면 전단거동; 보강토 옹벽
TOOLS
Share :
Facebook Twitter Linked In Google+ Line it
METRICS Graph View
  • 633 View
  • 23 Download


ABOUT
ARTICLE CATEGORY

Browse all articles >

BROWSE ARTICLES
AUTHOR INFORMATION
Editorial Office
1010 New Bldg., The Korea Science Technology Center, 22 Teheran-ro 7-gil(635-4 Yeoksam-dong), Gangnam-gu, Seoul 06130, Korea
Tel: +82-2-567-6311    Fax: +82-2-567-6313    E-mail: master@kosham.or.kr                

Copyright © 2024 by The Korean Society of Hazard Mitigation.

Developed in M2PI

Close layer
prev next