Ultimate bearing capacity of foundations on layered soils under inclined load

1978 ◽  
Vol 15 (4) ◽  
pp. 565-572 ◽  
Author(s):  
G. G. Meyerhof ◽  
A. M. Hanna
Keyword(s):  
Bearing Capacity ◽  
Ultimate Bearing Capacity ◽  
Model Tests ◽  
Clay Soils ◽  
Layered Soils ◽  
Inclined Load ◽  
Soft Layer ◽  
Soil Failure ◽  
Strip Footings

The ultimate bearing capacity of footings resting on subsoils consisting of two layers has been investigated for the cases of a dense or stiff layer overlying a weak deposit, and a loose or soft layer overlying a firm deposit. The analyses of different modes of soil failure are compared with the results of model tests on circular and strip footings on layered sand and clay soils.

Experimental study of punching coefficients and shape factor for two-layered soils

1979 ◽  
Vol 16 (4) ◽  
pp. 802-805 ◽  
Author(s):  
A. J. Valsangkar ◽  
G. G. Meyerhof
Keyword(s):  
Experimental Study ◽  
Bearing Capacity ◽  
Shape Factor ◽  
Model Tests ◽  
Punching Shear ◽  
Deep Foundations ◽  
Layered Soils ◽  
Shape Factors ◽  
Capacity Theory ◽  
Strip Footings

The ultimate bearing capacity of deep foundations has been investigated for the case of a strong layer overlying a weak stratum. The studies are based on model tests using buried circular and strip footings for a range of layer thicknesses. Based on the previously developed bearing capacity theory, the punching shear coefficients and corresponding shape factors have been evaluated.

Ultimate Bearing Capacity of Footings on Sand Layer Overlying Clay

1974 ◽  
Vol 11 (2) ◽  
pp. 223-229 ◽  
Author(s):  
G. G. Meyerhof
Keyword(s):  
Bearing Capacity ◽  
Soft Clay ◽  
Ultimate Bearing Capacity ◽  
Field Observations ◽  
Loose Sand ◽  
Sand Layer ◽  
Dense Sand ◽  
Soil Failure ◽  
Stiff Clay ◽  
Strip Footings

The ultimate bearing capacity of footings resting on subsoils consisting of two layers has been investigated for the cases of dense sand on soft clay and loose sand on stiff clay. The analyses of different modes of soil failure are compared with the results of model tests on circular and strip footings and some field observations of foundation failures.

The Effect of Friction at the Strip Footings’ Underside on the Expansion of Plastic Zones in Subgrade

2014 ◽  
Vol 1008-1009 ◽  
pp. 1227-1233
Author(s):  
Nian Chun Xu ◽  
Wen Jing Xia ◽  
Tong Qing Wu
Keyword(s):  
Critical Load ◽  
Bearing Capacity ◽  
Ultimate Bearing Capacity ◽  
Horizontal Direction ◽  
Strength Theory ◽  
Subgrade Soil ◽  
Plastic Zones ◽  
Definite Integration ◽  
Strip Footings ◽  
Two Sides

There exists horizontal friction besides vertically pressure at the foundations' underside. Considering the effect of friction on the expansion of plastic zones in subgrade is needed to accurately evaluate subgrade’s safety. A strip footing is chose as the research object. Assuming the distribution of friction at the strip footing’s underside is two symmetrical triangles. With the help of Flamant formula and via definite integration, the formulas of stress in subgrade induced by the friction are got. Setting the Coulomb-Mohr strength theory as the yielding criterion for the subgrade soil, through the comparison among the different friction angles in expansion characteristics of plastic zones, the research object is achieved. Two major conclusions as following: (1) the friction makes the plastic zones appear in advance, the initial critical load get smaller with the friction get bigger; (2) the plastic zones get broader in horizontal direction under the action of the friction, this makes the plastic zones in two sides beneath the footing run-through later and so enhances the subgrade’s ultimate bearing capacity.

Upper bound to bearing capacity of layered soils

1989 ◽  
Vol 26 (4) ◽  
pp. 730-736 ◽  
Author(s):  
Antoni Florkiewicz
Keyword(s):  
Experimental Data ◽  
Bearing Capacity ◽  
Limit State ◽  
Layered Soils ◽  
Flat Punch ◽  
Layer System ◽  
Capacity Limit ◽  
Strip Footings ◽  
Kinematical Approach ◽  
Layered Half Space

An approach to the problem of flat punch indentation into the Mohr-Coulomb layered half-space has been developed, based on the kinematical approach of limit analysis. A kinematically admissible plane-strain failure mechanism for a typical two-layer system is presented. The ultimate bearing capacity for strip footings obtained from the proposed approach compares well with the experimental data available in the literature. Key words: bearing capacity, limit state analysis, layered soil, strip footings.

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