软土地基填方边坡中水泥土搅拌桩的设计与优化

对于地基土中存在厚软弱土层的高填方边坡,采取有效加固手段处理软土层保证填方边坡不发生滑动失稳是边坡工程设计中的关键问题。水泥土搅拌桩是处理软土地基的一种可靠手段,可作为重力式挡墙,防止边坡发生失稳破坏。以国内某一核电厂填方边坡为工程案例,对水泥土搅拌桩重力式挡墙进行设计,从节省工程量和降低工程造价考虑,对搅拌桩的嵌入深度和置换率进行设计优化,其经验可供类似边坡加固工程参考。

Design and optimization of cement mixing pile in filling slope with soft foundation

For the high filling slope with soft soil foundation, it is an essential problem to consolidate the soft foundation to ensure slope safety. As a kind of gravity retaining wall, the cement mixing pile is a reliable foundation treatment technology to prevent the slope from collapse. Aiming at a slope engineering of a domestic nuclear power plant, we figured out a design solution of gravity retaining wall of cement mixing pile, verified the stability and optimized the insert depth and replacement rate in terms of saving working amount and lowering cost.