Effect of fabric anisotropy on bearing capacity and failure mode of strip footing on sand: An anisotropic model perspective

Abstract The paper deals with evaluation of bearing capacity of strip foundation on random purely cohesive soil. The approach proposed combines random field theory in the form of random layers with classical limit analysis and Monte Carlo simulation. For given realization of random the bearing capacity of strip footing is evaluated by employing the kinematic approach of yield design theory. The results in the form of histograms for both bearing capacity of footing as well as optimal depth of failure mechanism are obtained for different thickness of random layers. For zero and infinite thickness of random layer the values of depth of failure mechanism as well as bearing capacity assessment are derived in a closed form. Finally based on a sequence of Monte Carlo simulations the bearing capacity of strip footing corresponding to a certain probability of failure is estimated. While the mean value of the foundation bearing capacity increases with the thickness of the random layers, the ultimate load corresponding to a certain probability of failure appears to be a decreasing function of random layers thickness.

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Experimental Study about Bearing Capacity and Deformation on Concrete Composite Slabs with Additional Bars

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.482.7 ◽

2013 ◽

Vol 482 ◽

pp. 7-10

Author(s):

Jian Hua Cui ◽

Chuan Yang Weng ◽

Yun Lin Liu

Keyword(s):

Experimental Study ◽

Bearing Capacity ◽

Failure Mode ◽

Static Loading ◽

Flexural Behavior ◽

Flexural Properties ◽

Effective Height ◽

Composite Slabs

Through the experiments of four concrete composite slabs under static loading to compare their flexural properties (deflection, bearing capacity, failure mode), this paper discusses the influence of composite slabs flexural behavior on different length of additional bars and sectional effective height. The results showed that they will improve the bearing capacity effectively by reasonably increasing the sectional effective height and controlling the length of additional bars.

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Steel Plate Cold-Rolled Section Steel Embedded High-Strength Concrete Low-Rise Shear Wall Seismic Performance

Advances in Civil Engineering ◽

10.1155/2018/8362319 ◽

2018 ◽

Vol 2018 ◽

pp. 1-18

Author(s):

Min Gan ◽

Yu Yu ◽

Liren Li ◽

Xisheng Lu

Keyword(s):

Bearing Capacity ◽

Failure Mode ◽

Seismic Performance ◽

High Strength Concrete ◽

Steel Plate ◽

Shear Walls ◽

High Strength ◽

Shear Wall ◽

Steel Plates ◽

Strength Concrete

Four test pieces with different steel plate center-to-center distances and reinforcement ratios are subjected to low-cycle repeat quasistatic loading to optimize properties as failure mode, hysteretic curve, skeleton curve, energy dissipation parameters, strength parameters, and seismic performance of high-strength concrete low-rise shear walls. The embedded steel plates are shown to effectively restrict wall crack propagation, enhance the overall steel ratio, and improve the failure mode of the wall while reducing the degree of brittle failure. Under the same conditions, increasing the spacing between the steel plates in the steel plate concrete shear wall can effectively preserve the horizontal bearing capacity of the shear wall under an ultimate load. The embedded steel plates perform better than concealed bracing in delaying stiffness degeneration in the low-rise shear walls, thus safeguarding their long-term bearing capacity. The results presented here may provide a workable basis for shear wall design optimization.

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