Browse > Article

An Experimental Investigation of Boussinesq's Theoretical Value of Vertical Stress Increment in Sandy Soil Mass Caused by Surface Strip Loading  

Lim Jong-Seok (Major in Civil Engrg., Mokpo National Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.20, no.9, 2004 , pp. 5-15 More about this Journal
Abstract
It is worthwhile to verify the vertical stress distribution in soil mass for rigorous design of foundation. A series of laboratory model tests were performed to investigate the Boussinesq's theory on vertical stress increment in sandy soil mass caused by surface loading. The test results were also compared with Boussinesq's theoretical values. The Boussinesq's theoretical values were always smaller than test results under the footing regardless of depth. Outside of the footing the values were larger than the measured stress at the depth of just footing width. The theory and the test showed similar results when the depth reached two and three times the footing width. The vertical stress decreased as the applied load increased. These trends were confirmed to be valid for the considered range of the relative density of sand and/or the width of footing. More accurate values can be acquired by correcting the theoretical values using these results when Boussinesq's theory is used.
Keywords
Boussinesq's solution; Model test; Relative density; Sandy soil; Surface loading; Vertical stress distribution;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Boussinesq, J. (1885), Application des Potentials a L'Etude de L'Equilibre et du Mouvement des Solides Elastiques, Gauthier-Villars, Paris
2 Westergaard, H. M. (1938), 'A Problem of Elasticity suggested by a Problem' in Soil Mechanics; soft Material Reinforced by Numerous Strong Horizontal Sheets', in Contribution to the Mechanics of Soils, Stephen Timoshenko 60th Anniversary Volume, Macmillan, New York
3 Das, B. M. (1998), Principles of Geotechnical Engineering, PWS, Boston, pp.263-277
4 건설부 (1987), 구조울기초설계기준 해설, 대한토질공학회, pp.97-184
5 황정규 (1992), 지반공학의 기초이론, 구미서관, 서울, pp.192-221
6 Harr, M. E. (1977), Mechanics of Particulate Media - A Probabilistic Approach, McGraw-Hill Book Co., Inc., New York,N.Y.
7 Leussink, H., Blinde, A., and Abel, P. G. (1966), Versuche uever die Sohldruckverteilung unter starren Grundkoerpern auf kohaesionslosem Sand, Veroeff. Institute fuer Bodenmechanik TH Karlsruhe, Heft 22
8 Frohlich, O. K. (1934), Druckverteilung im Baugrunde, p.11
9 이상덕 (1997), 기초공학, 엔지니어즈, pp.111-206
10 Lambe, T. W. and Whitman, R. V. (1979), Soil Mechanics, John Wiley & Sons, pp.195-199
11 김기웅, 백영식 (1981), '탄성론과 확률론에 의한 지중응력분포의 비교연구', 대한토목학회논문집, 제29권 제l호, pp.91-97