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在剩余下滑力的基础上,先提出对桩前滑体进行稳定性分析,并求出各种工况下使末端滑块剩余下滑力为0或趋近于0的推力值;再利用桩身的挠度变化提出等效挠度理论,将桩前抗力与剩余下滑力差值通过等效挠度建立关系式,求出桩的设计推力。利用本文的等效挠度理论计算的推力值,不仅符合力学依据,而且通过工程实例计算发现数值与其他文献所用经验确定的数值相近,该理论可用于指导抗滑桩的设计及应用。
Based on the residual sliding force, the stability analysis of the sliding body before the pile is proposed and the thrust value of the residual sliding force of the final sliding block is 0 or approaches to 0 under various working conditions. The pile body The equivalent deflection theory is proposed, and the relationship between the pre-pile resistance and the residual slip force is established by equivalent deflection, and the design thrust of the pile is obtained. The thrust value calculated by the equivalent deflection theory in this paper not only accords with the mechanics basis but also can be used to guide the design and application of the anti-slide pile by calculating the value found by engineering practice and other empirical values determined by other literatures.