特殊地质条件下公路改扩建路基处理技术研究  

Research on Roadbed Treatment Technology for Highway Reconstruction and Expansion under Special Geological Conditions

作　　者：蔡冲明 

机构地区：[1]贵州顺成劳务管理有限公司,贵州贵阳550017

出　　处：《中国房地产业》2023年第30期138-141,共4页China Real Estate

摘　　要：为了减少特殊地质环境下路基沉降所引起的施工质量问题,提高公路使用耐久性能,根据某一段施工项目为例子,对弱软土与碎石土汽化混和地质环境情况下的公路改扩建路基处理技术性执行进行整理、提炼、总结归纳及科学研究,讨论该地理条件下公路改扩建工程项目的路基工程拼宽、浅部回填、碎石土汽化解决、弱软土解决、混和泡沫轻质土的使用、提升基本冲击碾压及其施工质量管理等新技术,为避免路基工程拼宽段基础沉降,路基工程分层次填方时设定双层钢塑土工格栅,保证拓宽路基工程的结构稳定性。软基处理结构加固承载能力实验结果显示,双重水泥土搅拌桩不一样深层无侧限抗气体压强达到设计要点,且单桩承载力均超过标准检验指标值。In order to reduce the construction quality issues caused by roadbed settlement in special geological environments and improve the durability of highway use,based on a certain construction project as an example,the technical implementation of roadbed treatment for highway reconstruction and expansion projects in the geological environment of weak soft soil and crushed stone soil vaporization mixed is organized,extracted,summarized,and scientifically studied.The roadbed engineering widening of highway reconstruction and expansion projects under this geographical condition is discussed New technologies such as shallow backfilling,gravel soil vaporization solution,weak soft soil solution,use of mixed foam light soil,improvement of basic impact rolling and construction quality management,etc.In order to avoid foundation settlement in the widened section of the subgrade project,double-layer steel plastic geogrid is set during the layered filling of the subgrade project to ensure the structural stability of the widened subgrade project.The experimental results of the reinforcement and bearing capacity of the soft foundation treatment structure show that the double cement-soil mixing pile is different,and the deep unconfined gas resistance pressure meets the design requirements,and the single pile bearing capacity exceeds the standard inspection index value.

关 键 词：公路改扩建 路基处理 弱膨胀土 砂土液化 混合地质 处理技术 

分 类 号：U41[交通运输工程—道路与铁道工程]