A simplified extension of the conventional theory of arching in soils

Shukla, Sanjay Kumar, Gaurav, , and Sivakugan, Nagaratnam (2009) A simplified extension of the conventional theory of arching in soils. International Journal of Geotechnical Engineering, 3 (3). pp. 353-359.

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A general formulation is presented for the analysis of arching in soils as an extension of the conventional shear plane approach, in which the slip surfaces within the soil mass are considered as vertical planes. Such an assumption results in a low estimate of the design load on the yielding buried structure because of a considerable separation between the assumed vertical slip surfaces and the actual curved slip surfaces. The arching theory presented in this paper overcomes this limitation of the conventional theory by assuming inclined slip surfaces close to the actual slip surfaces. Based on this concept, an analytical expression for the vertical stress on the yielding structure is derived; a special case of this general expression reduces to the conventional expression. The variation of the vertical stress on the yielding structure with depth has been presented graphically along with a comparison with the conventional vertical shear plane approach. It is observed that the amount of arching increases with increase in the ratio of depth to width of the yielding structure as reported in the literature.

Item ID: 10730
Item Type: Article (Research - C1)
ISSN: 1939-7879
Keywords: arching; buried structures; slip surface; soil-structure interaction
Date Deposited: 21 Apr 2010 05:28
FoR Codes: 09 ENGINEERING > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering @ 100%
SEO Codes: 87 CONSTRUCTION > 8702 Construction Design > 870201 Civil Construction Design @ 100%
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