有限元模拟精确分析地下连续墙槽壁加固区域的应用

Application of Accurate Analysis on the Groove Wall Reinforcement Area of Underground Continuous Wall with Finite Element Simulation

主要论述苏州火车站改造工程地下连续墙槽壁加固应用有限元模拟计算,模拟分析了3种不同工况对槽壁稳定的影响程度和影响区域,精确确认了加固区域。工程实践表明,有限元模拟计算分析槽壁加固区域是准确的,特例也充分验证了分析结论。加固区域的精确确认,明显缩短了高压旋喷桩加固的有效桩长,大大节约了加固成本和工期,确保了地下连续墙安全施工,取得了较好的整体效果,为地下连续墙槽壁在复杂地质条件下加固提供很好借鉴经验。

This paper mainly discusses the finite element simulation used in the groove wall reinforcement of underground continuous wall in Suzhou railway station reconstruction project. It analyzes the influence degree and area of the groove wall stability in three different conditions, and the reinforcement area is accurately confirmed. The practice results show that the finite element simulation analysis of groove wall reinforcement area is accurate, and the analysis conclusion is fully verified. The precise confirm of reinforcement area significantly shortens the effective length of high pressure jet grouting reinforce- ment pile, greatly saves the cost and time limit of a project, and ensures the construction safety of underground continuous wall. The overall effect is very good. It provides good reference for the groove wall reinforcement of underground continuous wall under complex geological conditions of similar projects.