A New Approach to the Determination of the Critical Slip Surfaces of Slopes--《Ch

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A New Approach to the Determination of the Critical Slip Surfaces of Slopes水利论文 n6b%viqD6uPj

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【摘要】:A new method for the determination of the critical slip surfaces of slopes is proposed in this paper.In this paper,the original critical slip field method is extended in terms of the total residual moment,values of residual work as well as the unbalanced thrust force at the exit point for a given non-circular slip surface.The most critical slip surface with the maximum representative value for a prescribed factor of safety will be optimized and located using the harmony search algorithm.The prescribed factor of safety is modified with certain tiny interval in order to find the critical slip surface where the maximum representative value is zero.The aforementioned approach to the location of the critical slip surface is greatly different from the traditional limit equilibrium procedure.Three typical soil slopes are evaluated by use of the proposed method,and the comparisons with the classical approaches have illustrated the applicability of the proposed method.

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slope stability analysis;limit equilibrium method;critical slip field method;factor of safety

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【基金】:supported by the National Natural Science Foundation of China (Grant Nos. 51008167 and 51274126)

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the S&T Plan Project of Shandong Provincial Education Department (Grant No. J10LE07)水利论文H$w:K*V x`MI

'sZ%xS2xji*h0Sk0the Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20103721120001)水利论文Fb~T'y5QTS%b

TlMd4F0a0the Research Project Council of the Hong Kong SAR Government(Grant No. PolyU 513808)


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+?k!k FJ mXam3y k01. IntroductionLimit equilibrium method (LEM) is still the most popular slope stability analysis method used byengineers at present. Although LEM does not consider the stress-strain relation of soil, the factor ofsafety can be determined without the know水利论文2gCp\!u(~WD!zx

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