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一、概述具有软弱夹层的坝基,由于夹层的抗剪强度指标极低,通常均需进行加固处理,以满足抗滑稳定要求。夹层坝基的抗滑稳定分析,一般按刚体平衡法、有限单元法和模型试验等方法进行。利用刚体平衡法中被动抗力法计算时,坝基的抗滑稳定安全系数K可由图1按下式求得。
First, an overview of the dam foundation with weak interlayer, due to the sandwich shear strength index is extremely low, usually need to be reinforced to meet the anti-skid stability requirements. Sandwich dam foundation stability analysis, generally according to rigid body balance method, finite element method and model tests and other methods. The use of rigid body balance method of passive resistance method is calculated, the base of the anti-sliding stability and safety factor K can be obtained by Figure 1 by the following formula.