Stability Analysis of Narrow and Long Excavation in Soft Soil Area

Publisher: Trans Tech Publications

E-ISSN: 1662-7482|2015|723|372-376

ISSN: 1660-9336

Source: Applied Mechanics and Materials, Vol.2015, Iss.723, 2015-03, pp. : 372-376

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Abstract

At the present stage of excavation design,the embedded depth of braced structure should meet the requirement of circular sliding stability when the bottom is soft soil. By increasing the embedded depth of support structure, the requirements of stability could be meet. In the normal design, the support structure must penetrate the soft soil layer when the bottom exist soft soil. While when the excavation is narrow and long, because of the obviously spatial effect, there is no need to determine the embedded depth based on the general circular sliding stability. In this paper, based on one the project example, calculate and analyze the similar stability using strength reduction method through the finite element software Plaxis and Midas.