高速铁路软土路基桩基处理造价指标分析

Analysis on Cost Index of Pile Foundation Treatment for Soft Soil Subgrade in High Speed Railway

地基作为铁路运行的基础设施,是确保铁路安全稳定运行的前提和基础,高速铁路对路基施工后沉降控制要求非常高,对软土路基采用各种类型桩基进行加固是高速铁路控制沉降的有效措施。本文对高速铁路软土路基处理中常用的几种桩基的成桩原理、适用范围、设计要求、施工工艺流程等进行了深入研究,对不同类型桩基的造价指标进行了对比分析,并结合工程实际提出了实施建议,供设计人员参考。

The high-speed railway has very high requirements for post-construction settlement control of subgrades.As the infrastructure for railway operation,foundations are the prerequisite and basis to ensure the safe and stable operation of high-speed railways.It is an effective measure to use various types of pile foundations to strengthen the soft soil subgrades.This paper conducts in-depth research on the pile forming principle,application scope,design requirements and construction process of several commonly used pile foundations.The cost indexes of different types of pile foundations are compared and analyzed.Based on the practical experience,the implementation suggestion is put forward to provide reference for engineers.