Seismic Analyses of Soil Pressure against Embedded Mat Foundation and Pile Displacements for a Building in Moderate Seismic Area
0
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
Seismic analyses of a pile under a large rigid basement foundation embedded in the homogeneous soil layer were performed practically by a response displacement method assuming a sinusoidal wave form. However, it is hard to take into account the characteristics of a large mat foundation and a heterogeneous soil layer with the response displacement method. The response displacement method is relevant to the 2D problems for longitudinal structures such as tunnel, underground cave structure, etc., but might not be relevant with isolated foundations for building structures. In this study, seismic pile analysis by a pseudo 3D finite element method was carried out to compare numerical results with results of the response displacement method considering 3D characteristics of a foundation-soil system which is important for the building foundation analyses. Study results show that seismic analyses results of a response displacement method are similar to those of a pseudo 3D numerical method for stiff and dense soil layers, but they are too conservative for a soft soil layer inducing large soil pressures on the foundation wall and large pile displacements due to ignored foundation rigidity and resistance.
Abstract
Seismic analyses of a pile under a large rigid basement foundation embedded in the homogeneous soil layer were performed practically by a response displacement method assuming a sinusoidal wave form. However, it is hard to take into account the characteristics of a large mat foundation and a heterogeneous soil layer with the response displacement method. The response displacement method is relevant to the 2D problems for longitudinal structures such as tunnel, underground cave structure, etc., but might not be relevant with isolated foundations for building structures. In this study, seismic pile analysis by a pseudo 3D finite element method was carried out to compare numerical results with results of the response displacement method considering 3D characteristics of a foundation-soil system which is important for the building foundation analyses. Study results show that seismic analyses results of a response displacement method are similar to those of a pseudo 3D numerical method for stiff and dense soil layers, but they are too conservative for a soft soil layer inducing large soil pressures on the foundation wall and large pile displacements due to ignored foundation rigidity and resistance.
참고문헌 (16)
- 한진태, "1g 진동대 실험을 이용한 액상화 지반에 근입된 말뚝에 작용하는 동적 토압 분석", 한국지반공학회논문집, 27(9), pp.87~98 (2011), 한국지반공학회
- 이승현, "횡방향력을 받는 말뚝의 해석기법 개발 및 평가", 대한토목학회 논문집C, 32(2), pp.79~84 (2012), 대한토목학회
- 장화섭, "사질토에 근입된 해상풍력 모노파일 기초의 횡방향 거동 분석", 한국강구조학회 논문집, 25(4), pp.421~430 (2013), 한국강구조학회
- Song LH, "Application of soilpressure model considering displacements to lateral loaded piles", Rock and soil Mechanics-WUHAN-, 28(5) (2007)
- Takahashi A, "Mobilisation of Earth Pressure acting on Pile Caps under Cyclic Loading", Soils and Foundations, 48(6), pp.741~754 (2008), Japanese Geotechnical Society
- Kimura M, "Seismic Evaluations of Pile Foundations with Three Different Methods based on Three-Dimensional Elasto-Plastic Finite Element Analysis", Soils and Foundations, 40(5), pp.113~132 (2000), Japanese Geotechnical Society
- Ealami MM, "A comparative study on pile group and piled raft foundations (PRF) behavior under seismic loading", Computational Methods in Civil Engineering, 2(2), pp.185~199 (2011), University of Guilan in Iran
- "PEER Strong Earthquake Data Base"[URL]
- International Code Council Inc, "2012 International Building Code", ~ (2012)
- Keon-Seol-Do-Seo Publishing Co, "Seismic Design of Underground Structures", pp.210~ (1996)
- A Review of Soil-Structure Interaction, "Roésset JM", Lawrence Livermore Laboratory, 125~ (1980)
- Kim YS, "Dynamic Response of Structures on Pile Foundations", Ph.D, pp.1987
- Dynamic Analysis of Axisymmetric Pile Groups, "Tyson TR", Dept. of Civil Engineering, MIT, 67~, pp.Research Report. R80-07 (1983)
- Kim YS, "Effect of Nonlinear Soil Behavior on the Inelastic Seismic Response of a Structure", The International Journal of Geomechanics, 4(2), pp.104~114 (2004), ASCE
- Forced Vibrations of Circular Foundations on Layered Media, "Kausel E", Department of Civil Engineering, MIT, ~, pp.Research Report, R74-11 (1974)
- Ray WC, "Dynamics of Structures", pp.634~ (1975), McGraw-Hill