单支点桩锚支护结构的侧移计算

Calculation on Horizontal Displacement of Single Fulcrum Pile-anchor Retaining Structure

将单支点桩锚支护结构的锚杆简化为水平方向的弹簧支座,将桩的入土嵌固端作为具有弹性转动能力的铰支座,建立支护结构的计算模型,并确定了模型中各个参数。按此计算模型,考虑支护桩的弯曲变形和刚体转动的叠加,推导出锚杆锚固点的水平侧移计算公式。据此可计算支护桩的桩顶水平侧移。

The anchor of single fulcrum pile-anchor retaining structure can be regarded as a spring support, and the constraint end of the pile is simulated modeled as a pivot that can rotate some degree to establish each parameter of the mode. According to the mode, the formula for calculating the horizontal displacement of anchor fixed point is obtained by taking account of the bending deformation and rigid rotation altogether, thus the horizontal displacement of the top end of the pile can be calculated.