점토굴착 사면의 거동에 관한 원심모형실험 및 수치해석

• 영문명: Centrifuge Model Experiments and Numerical Analyses on the Behaviour of Excavated Clayey Soil
• 발행기관: 강원대학교 산업기술연구소
• 저자명: 최민수(Choi Min Soo) 정길수(Jeong Gil Soo) 박병수(Park Byung Soo) 유남재(Yoo Nam Jae)
• 간행물 정보: 『산업기술연구』vol.25, 55~62쪽, 전체 8쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2005.09.30

영문 초록

This paper is the results of experimental and numerical works on analyzing the geotechnical engineering behavior and characteristics of excavated clay slope formed by the method of excavated replacement which is one of treatments in soft soil ground. For the centrifuge model tests, models of excavated clay slope were prepared by remolding the marine clayey soil sampled from the field. Tests were performed with changing the slope to investigate the behavior of them. On the other hand, numerical analyses were carried out to analyze the change of safety factor against instability of slope with time. Changes of pore water pressure, shear strength and displacement were also investigated. As results of centrifuge model tests with slopes of 1:1.5 and 1:3 using the confining body of simulating the effect of excavation, for the case of 1:1.5, slope failure occurred right after remove the confining body whereas relatively small displacements within the range of 3.2mm, implying to maintain the stability of slope, were observed for the case of 1:3 slope. From the results of numerical analyses using the software of PLAXIS to investigate the stability of slope after excavation, the minimum safety factor against slope failure was 1.28 for the case of 1:3 slope. The further researches in the future are required with considerations of build up of static pore water pressures during acceleration of centrifuge, depth of excavation influencing the behavior of the slope and permeability of the slope since excavation of the slope was not simulated well resulted from the limitations of apparatus at the stage of excavation during the centrifuge tests.

목차

Abstract

1. 서론

2. 굴착 점토사면의 거동

3. 모형실험방법

4. 수치해석

5. 결과분석

6. 결론

참고문헌

키워드

연약지반 사면안정 원심모형실험 굴착치환 soft ground slope stability centrifugal model test replacement excavation