碎石注浆桩在客运专线铁路深厚层软基加固中的应用

Application of Grouted Crushed Stone Piles to Reinforcing of Deep and Thick Soft Soil Ground of Passenger Dedicated Railways

碎石注浆桩是近年来应用于深厚层软基加固工程中的一项新技术,国内还没有统一的施工和验收技术标准可供执行,且在铁路工程施工中尚无应用先例。目前,碎石注浆桩通过在甬台温铁路新温州站工程中的首次实践和成功应用后,在东南沿海铁路客运专线工程中得到推广。重点介绍碎石注浆桩加固铁路深厚层软基的可行性分析、施工工艺要点及质量检验标准,为类似工程提供可借鉴的经验。

The grouted crushed stone pile technique is a type of new technique having been applied to reinforcing of deep and thick soft soil ground in the recent years. There are no unified domestic technical criteria for construction, inspection and acceptance of the piles as yet and even no precedents of application of the piles to railway construction. However, the pile technique nowadays has been gradually popularized in the passenger dedicated railway construction in the coastal area in the southeast part of China since the technique was first put into practice and successfully applied to the construction of the New Wenzhou Station on Ningbo-Taizhou-Wenzhou Railway. This paper focuses on the feasibility analysis, construction technology key points and construction quality inspection criteria of application of the pile technique to reinforcing of the deep and thick soft soil ground of railway construction to provide experiences of reference to similar construction.