Abstract
In the present paper, a method of analysis for calculating the pressure intensity corresponding to a given settlement for eccentrically and obliquely loaded square and rectangular footings resting on reinforced soil foundation has been presented. The process has been simplified by presenting non-dimensional charts for the various terms used in the analysis, which can be directly used by practicing engineers. An approximate method has been suggested to find out the ultimate bearing capacity of such footings on reinforced soil. The results have been validated with the model test results. The procedure has been made clear by giving an illustrative example.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
Abbreviations
- B :
-
width of footing
- D R :
-
depth of bottom most reinforcement layer
- e:
-
eccentricity
- f:
-
soil reinforcement frictional coefficient
- Φr :
-
soil – reinforcement friction angle
- γ:
-
unit weight of sand
- i:
-
load inclination
- I xz :
-
dimensionless normal shear force component for computation of driving force of reinforcing layer at depth z
- J xz :
-
dimensionless vertical normal force component in x direction for computation of driving force of reinforcing layer at depth z
- J yz :
-
dimensionless vertical normal force component in y direction for computation of driving force of reinforcing layer at depth z
- L r :
-
length of reinforcing layer
- LDR:
-
linear density of reinforcement
- M xz :
-
dimensionless normal force component in x-direction for computation of soil-reinforcement frictional resistance of reinforcing layer at depth Z.
- M xz :
-
dimensionless normal force component in y-direction for computation of soil-reinforcement frictional resistance of reinforcing layer at depth Z.
- q ur :
-
ultimate bearing capacity of reinforced sand
- N q :
-
Terzaghi’s bearing capacity factor
- T R :
-
allowable tensile strength of reinforcement per unit length
- T f :
-
reinforcement pullout frictional resistance
- T D :
-
driving force in reinforcement
References
Adams MT, Collin JG (1997) Large model spread footing load tests on geosynthetic reinforced soil foundations. J Geotech Geoenviron Eng ASCE 123(1):66–72
Agrawal RK (1986) Behaviour of Shallow foundations subjected to eccentric inclined loads. Ph D thesis, University of Roorkee, Roorkee (India)
Akinmusuru JO, Akinbolade JA (1981) Stability of loaded footings on reinforced soil. J Geotech Eng Div ASCE 107(GT6):819–827
Al-Smadi MM (1998) Behavior of ring foundations on reinforced soil. PhD thesis, University of Roorkee, Roorkee (India)
Binquet J, Lee KL (1975a) Bearing capacity tests on reinforced earth slabs. J Geotech Eng Div ASCE 101(GT 12):1241–1255
Binquet J, Lee KL (1975b) Bearing capacity analysis of reinforced earth slabs. J Geotech Eng Div ASCE 101(GT 12):1257–1276
Das BM, Larbi-Cherif S (1983) Bearing capacity of two closely spaced shallow foundations on sand. Soils and foundations. Jap Soc Soil Mech Found End 23(1):1--7
Dixit RK, Mandal JN (1993) Bearing capacity of geosynthetic reinforced soil using variational method. Geotext Geomembr 12:543–566
Fragaszy RJ, Lawton E (1984) Bearing capacity of reinforced sand subgrade. J Geotech Eng Div ASCE 110(10):1500–1507
Guido VA, Chang DK, Sweeney MA (1986) Comparison of geogrid and geotextile reinforced earth slabs. Can Geotech J 23:435–440
Huang CC, Tatsuoka F (1990) Bearing capacity of reinforced horizontal sandy ground. Geotext Geomembr 9:51–80
Khing KH, Das BM, Puri VK, Cook EE, Yen SC (1993) The bearing capacity of strip foundation on geogrid reinforced sand. Geotext Geomembr 12:351–361
Khing KH, Das BM, Puri VK, Yen SC, Cook EE (1994) Foundation on strong sand underlain by weak clay with geogrid at the interface. Geotext Geomembr 13:199–206
Kumar (1997) Interaction of footings resting on reinforced earth slab. PhD thesis, University of Roorkee, Roorkee (India)
Kumar S (2002) Behaviour of eccentrically and obliquely loaded footings on reinforced earth slab. PhD thesis, IIT Roorkee, Roorkee (India)
Kumar A, Saran S (2001) Isolated strip footing on reinforced sand. Geotech Eng J, Bangkok, Thailand, SEAGS 32:177–189
Kumar A, Saran S (2003a) Closely spaced footings on geogrid reinforced soil. J Geotech Geoenviron Eng ASCE, ASCE 129(7):660–664
Kumar A, Saran S (2003b) Bearing capacity of rectangular footing on reinforced soil. J Geotech Geol Eng Kluwer Acad Publ, The Netherlands 21(3):201–224
Kumar A, Saran S (2003c) Closely spaced strip footings on reinforced sand. Geotech Eng J, Bangkok, Thailand, SEAGS, December 34(3):177–189
Kumar A, Saran S (2004) Closely spaced rectangular footing on reinforced soil. J Geotech Geol Eng Kluwer Acad Publ, The Netherlands 22:497–524
Kumar A, Walia BS, Saran S (2005) Pressure settlement characteristics of rectangular footings on reinforced soil. J Geotech Geol Eng 23:469–481. Springer Science and Business Media, The Netherlands
Murthy BRS, Sridharan A, Singh HR (1993) Analysis of reinforced soil beds. Indian Geoteh J 23(4):447–458
Omar MT, Das BM, Yen SC, Puri VK, Cook EE (1993a) Ultimate bearing capacity of rectangular foundations on geogrid-reinforced sand. Geotech Test J ASTM 16(2):246–252
Omar MT, Das BM, Yen SC, Puri VK, Cook EE (1993b) Ultimate bearing capacity of shallow foundations on sand with geogrid-reinforcement, Can Geotech J 30(3):545–549
Omar MT, Das BM, Puri VK, Yen SC, Cook EE (1994) Bearing capacity of foundations on geogrid-reinforced sand. 13th International Conference on SMFE, New Delhi, pp 1279–1282
Poulos HG, Davis EH (1974) Elastic solutions for soil and rock mechanics. John Wiley and Sons. Inc., New York
Saran S, Agrawal RK (1991) Bearing capacity of eccentrically obliquely loaded footing. J Geotech Eng ASCE 117(11):1669–1690
Singh HR (1988) Bearing capacity of reinforced soil beds. PhD thesis, II Sc Bangalore (India)
Yetimoglu T, Wu JH, Saglamer A (1994) Bearing capacity of rectangular footings on geogrid reinforced sand. J␣Geoteh Eng ASCE 120(12):2083–2099
Yoo C (2001) Laboratory investigation of bearing capacity behaviour of strip footing on geogrid-reinforced sand slope. Geotext Geomembr 19:279–298
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Saran, S., Kumar, S., Garg, K. et al. Analysis of square and rectangular footings subjected to eccentric-inclined load resting on reinforced sand. Geotech Geol Eng 25, 123–137 (2007). https://doi.org/10.1007/s10706-006-0010-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10706-006-0010-7