土工基础

土工基础 ›› 2025, Vol. 39 ›› Issue (5): 687-691.

• 工程实录 • 上一篇    下一篇

注浆钢花管在陡坡高填路堤沉降处治中的应用

赖荫楠，郭 珅   

  1. （福建省交通规划设计院有限公司，福州 350007）
  • 收稿日期:2023-08-16 修回日期:2023-08-31 出版日期:2025-10-31 发布日期:2025-10-30
  • 作者简介:赖荫楠（1992-），男，工程师，硕士，研究方向为地质灾害防治。

Application of Steel Perforated Pipe Grouting in Settlement Mitigation of a Steep Embankment Slope

LAI Yinnan, GUO Shen   

  1. (Fujian Provincial Transportation Planning and Design Institute Co. Ltd., Fuzhou 350007)
  • Received:2023-08-16 Revised:2023-08-31 Online:2025-10-31 Published:2025-10-30

摘要： 以某高填路堤沉降处治为背景，采用MIDAS-GTS有限元软件建立数值模型，通过仅考虑钢管、仅考虑注浆和注浆联合钢管三个工况来模拟注浆钢花管对路堤的加固效果。结果表明：①在陡坡高填路堤加固中，注浆钢花管加固机理与土钉类似，钢管自身抵抗变形的作用较小，其主要起到土钉的作用；②注浆加固土体的作用与钢管的土钉作用对控制路堤沉降的效果接近，可通过改善注浆效果减少钢管用量达到相同的加固效果；③注浆钢花管的加固机理为钢管与注浆的联合作用，由于钢管为被动受力构件，随着注浆效果的增强，土体位移减小导致了钢管的锚固效果反而降低，因此，注浆设计时应考虑注浆效果对钢管的锚固的影响。

关键词: 路基工程, 高填路堤, 钢花管, 注浆加固, 加固设计

Abstract: This paper presents the case history of an expressway high embankment settlement mitigation by the steel perforated pipe grouting method. The grouting results are numerically simulated by MIDAS GTS commercial software under three different conditions: namely, only considering the effect of steel pipe, only considering the effect of grouting, and considering the combinations steel pipe and grouting. The results show that: the reinforcement effect of grouting steel perforated pipe on the embankment is composed of steel pipe and grouting soil, and the effect of the two components on the controlling embankment settlement are similar. In addition, the steel perforated pipe mainly plays the role of the soil nail, and its effect decreases with the improvement of grouting effect.

Key words: Subgrade Engineering, High Embankment, Steel Perforated Pipe, Grouting Reinforcement, Rehabilitation Design

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