桩板墙桩前软弱地基旋喷桩加固效果研究

摘要

The horizontal bearing capacity of sheet-pile wall largely depends on bearing capacity of the foundation and the embedded depth of pile. In order to control the horizontal displacement, it is necessary to reinforce the foundation before the pile when the soft foundation is thicker and the pulling force of the anchor rope can not be effectively guaranteed. As a common method of weak stratum reinforcement, chemical churning pile is widely used in weak stratum because of its advantages of environmental protection, small disturbance and short construction period. In this paper, we use the chemical churning pile to reinforce the soft ground and focus on the analysis of the reinforcement effect on chemical churning pile with different length by numerical simulation.%桩板墙的水平承载能力在很大程度上取决于地基的承载能力和嵌固段埋深. 若桩板墙嵌固段地层软弱地基厚度较大,且施工锚索抗拔力得不到有效保障,此时为控制桩身的侧向变形,需要对桩前地基进行加固. 旋喷桩作为软弱地层加固的一种常用手段,因其具有环保、扰动小、工期短等优势,被广泛应用于软弱地层加固. 本文采用旋喷桩加固桩板墙前软弱地基,通过数值模拟分析了不同长度下旋喷桩的加固效果.