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本文分析了支护结构变形与土压力的关系，建立了一个按照指定变形量确定相应土压力的线性公式。利用弹性地基梁基本假定，推导出指定变形条件下的锚杆式（单层或多层）混合支护结构的内力计算公式。
This paper analyzes the relationship between deformation of supporting structures and earth pressure, and establishes a linear formula to determine the corresponding earth pressure according to the specified deformation. Based on the basic assumption of the elastic foundation beam, the internal force calculation formula of the anchor type (single or multi-layer) mixed support structure under the specified deformation condition is deduced.