锚固力在边坡加固中的工程应用

假定滑面正应力分布为含有待定参数的插值函数，利用力和力矩平衡方程推导出锚固力作用下边坡安全系数显式解和给定安全系数要求的锚固力系数解析解。并把这种方法用在边坡加固的实际工程中，发现在锚固力作用下，滑面上正应力分布比较连续，条间力分布也比较合理，而且其方法计算过程简单，易编程实现，便于工程应用，其计算精度也在严格极限平衡法限定范围内，同时克服了传统方法导致滑面正应力反常的缺点。另外，该方法与岩土边坡动力学方法相比较，结果是一致的，说明该方法是可行的。

A method for calculation of anchor force in slope reinforcement

This paper proposes a method to calculate anchor force. It presumes the initial distribution of normal stresses over the slip surface is an interpolative function involving undetermined parameters. Using force equilibrium equations and moment equilibrium equations, an explicit solution to factor of safety for slope reinforced by anchors is derived, and an analytical solution to coefficient of anchor force given the requirement of safety factor of slope is also deduced. The method’s computation is quite straightforward to process. It is found that the distribution of normal stresses in this method is continuous and the internal stresses are reasonable. The method has been successfully applied to computing two engineering slope. Results show that the calculated precision is in range of limit equilibrium method satisfying all equilibriums. It overcomes the disadvantage of abrupt change in normal stresses on the slip surface, which is encountered when using conventional limit equilibrium methods. In addition, this method is verified with the results of slope in this paper agreeing with those obtained with dynamic method to the anchor slope.