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Influence of nonassociativity on the bearing capacity factors of a circular footing

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Abstract

Numerical computations using the finite difference code FLAC (fast Lagrangian analysis of continua) are presented to evaluate the soil bearing capacity factors N′ c ,N′ q and N′ γ for circular smooth and rough footings. The influence of nonassociative flow rule on the ultimate bearing capacity of a circular footing is investigated. The footing rests on the surface of a homogeneous soil mass and a Mohr-Coulomb yield criterion have been assumed for the soil behavior. The values of ultimate bearing capacity factors N′ c ,N′ q and N′ γ are obtained for a wide range of values of the friction angle for five different values of the dilation angle. The values from the numerical simulation are found to decrease significantly with the increase of nonassociativity of the soil. The results are compared with those derived from existing classical solutions.

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Authors and Affiliations

  1. School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai, 200240, China

    Lan Zhao  (赵 岚) & Jian-hua Wang  (王建华)

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  1. Lan Zhao  (赵 岚)
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  2. Jian-hua Wang  (王建华)
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Correspondence to Jian-hua Wang  (王建华).

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Foundation item: the National Natural Science Foundation of China (No. 50679041), and the Mountaineering Program of Science and Technology Commission of Shanghai Municipality (No. 04dzl 2001)

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Zhao, L., Wang, Jh. Influence of nonassociativity on the bearing capacity factors of a circular footing. J. Shanghai Jiaotong Univ. (Sci.) 14, 429–434 (2009). https://doi.org/10.1007/s12204-009-0429-0

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  • DOI: https://doi.org/10.1007/s12204-009-0429-0

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