材料
Online ISSN : 1880-7488
Print ISSN : 0514-5163
ISSN-L : 0514-5163
論文
強度不均一性を考慮した固化処理地盤の支持力に関する信頼性解析
笠間 清伸善 功企
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ジャーナル フリー

2010 年 59 巻 1 号 p. 44-49

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Cement-mixing method is gaining popularity as a method for stabilizing soft soils in applications ranging from the improvement of foundation properties to mitigation of liquefaction. However, spatial variability in the shear strength of the cement-treated ground introduces uncertainties in estimating the bearing capacity for design. This paper presents a reliability assessment for the bearing capacity of cement-treated ground based on the results of a probabilistic study in which the shear strength of the cement-treated ground is represented as a random field in Monte Carlo simulations of undrained stability for a surface foundation using numerical limit analyses. A statistical interpretation of the bearing capacity is based on Monte-Carlo simulations using the Random Field Numerical Limit Analyses. The results show how the bearing capacity is related to the coefficient of variation and correlation length scale in the shear strength of cement-treated ground. Based on the result, an overdesign factor and percent defective for the bearing capacity are proposed to obtain a target probability of failure.

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© 2010 日本材料学会
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