교대말뚝기초의 측방유동에 관한 원심모형실험

• 영문명: Centrifuge Model Experiments for Lateral Soil Movements of Piled Bridge Abutments.
• 발행기관: 강원대학교 산업기술연구소
• 저자명: 최동혁(Choi Dong Hyurk) 정길수(Jeong Gil Soo) 박병수(Park Byung Soo) 유남재(Yoo Nam Jae)
• 간행물 정보: 『산업기술연구』vol.25, 63~71쪽, 전체 9쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2005.09.30

영문 초록

This paper is an experimental result of investigating lateral soil movements at piled bridge abutments by using the centrifuge model facility. Three different centrifuge model experiments, changing the methods of ground improvement at bridge abutment on the soft clayey soil (no improvement, preconsolidation and plastic board drain (PBD), sand compaction pile (SCP) + PDB), were carried out to figure out which method is the most appropriate for resisting against the lateral soil movements. In the centrifuge modelling, construction process in field was reconstructed as close as possible. Displacements of abutment model, ground movement, vertical earth pressure, cone resistance after soil improvement and distribution of water content were monitored during and after centrifuge model tests. As results of centrifuge model experiments, preconsolidation method with PBD was found to be the most effective against the lateral soil movement by analyzing results about displacements of abutment model, ground movement and cone resistance. Increase of shear strength by preconsolidation method resulted in increasing the resistance against lateral soil movement effectively although SCP could mobilize the resistance against lateral soil movement. It was also found that installment with PBD beneath the backfill of bridge abutment induced effective drainage of excess pore water pressure during the consolidation by embanking at the back of the abutment and resulted in increasing the shear strength of clay soil foundation and eventually increasing the resistance of lateral soil movement against piles of bridge abutment.

목차

Abstract

1. 서론

2. 실험방법

3. 실험결과 및 분석

4. 결론

참고문헌

키워드

원심모형실험 측방유동 선행재하압밀공법 플라스틱보드드레인공법 모래다짐말뚝공법 Centrifuge model experiment Lateral soil movement Plastic board drain method Preconsolidation method Sand compaction pile method