软弱地层路基加固效果方案优化研究  

A Study of the Optimization of the Consolidating Schemes for Roadbeds in the Soft Stratum

作　　者：梁桥欣 郑明辉 张维 何本国[2] 

机构地区：[1]中铁交通投资集团,广西南宁530000 [2]西南交通大学土木工程学院,四川成都610000

出　　处：《国防交通工程与技术》2015年第6期37-40,共4页Traffic Engineering and Technology for National Defence

基　　金：新世纪优秀人才支持计划(NCET-10-0667)

摘　　要：市政工程建设过程中,由于受房屋征拆、管线迁改、苗木迁移等影响,经常需要对施工方案进行比选,以获得最优方案。以某在建市政道路工程为依托,从方案难易程度、加固效果数值模拟、工程经济性、工期四个方面对比分析了水泥粉煤灰碎石桩(CFG桩)与高压旋喷桩两种软弱地层路基加固处理方案的优缺点,在综合考虑各方面因素情况下,选择高压旋喷桩作为该段路基加固处理方案。既保证了路基加固效果,又满足了工期要求,对市政道路建设具有一定的借鉴作用。In the course of municipal engineering construction,different schemes of construction often need to be compared and selected in order to get the best one because of the affection of the dismantlement of houses,the movement of pipelines and the transferring of seedlings.With a certain municipal road project under construction as a practical example,the advantages and disadvantages of the cement-flyash-gravel pile（CFG piles）and the high-pressure rotary jet grouting pile for consolidating the roadbeds in the soft stratum are compared and analyzed from the four aspects of the difficulty in performing the scheme,the numerical simulation of the consolidating effect,the engineering economy and the construction duration.With the various factors taken into comprehensive consideration,the high-pressure rotary jet grouting pile is chosen as the construction scheme to consolidate the roadbed.With the above-mentioned technique adopted for the project,the reinforcing effect of the roadbed is insured and the requirement for the construction duration is also met.The paper may serve as useful reference for the construction of other municipal roads.

关 键 词：CFG桩 高压旋喷桩 市政道路 软弱地层 路基加固 方案优化 

分 类 号：U416.1[交通运输工程—道路与铁道工程]