气泡混合轻质土在既有高速公路桥台软基加固中的应用  被引量:6

The Application of Foamed Mixture Light Soil in Soft Foundation Reinforcement of Existing Expressway Abutments

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作  者:伍坤 WU Kun(Jiangxi Province Tianchi Highway Technology Development Co.,Ltd.,Nanchang 330103,Jiangxi,China)

机构地区:[1]江西省天驰高速科技发展有限公司,江西南昌330103

出  处:《工程技术研究》2023年第9期88-91,共4页Engineering and Technological Research

基  金:江西省交通运输厅科技项目“既有涉水桥梁下部结构性能检测评估及桩基加固技术研究”(2022H0018)。

摘  要:高速公路软土路基固结及长期蠕变变形大,工后将产生显著沉降,桥头跳车等病害问题突出,严重影响公路行驶安全和舒适性。文章以沿海软土地基某既有高速公路桥台加固工程为背景,对工程试验段采用的气泡混合轻质土配比及其性质进行介绍,然后阐述了气泡混合轻质土在加固工程中的应用要点,最后对加固效果进行了检验与分析。沉降监测结果表明:气泡混合轻质土加固后路堤平均月沉降速率为3.7 mm,较加固前有明显降低,且其沉降趋于缓和,证明其该材料具有良好的加固效果。The consolidation and long-term creep deformation of soft soil subgrade of expressways are serious,which will cause significant settlement after construction,and prominent problems such as bridgehead jumps,seriously affecting the safety and comfort of highway driving.Based on the reinforcement project of an existing expressway abutment on coastal soft soil foundation,the proportion and properties of foamed mixture light soil used in the experimental section of the project are introduced.Then,the application points of foamed mixture light soil in reinforcement project are expounded.Finally,the reinforcement effect is tested and analyzed.The settlement monitoring results show that the average monthly settlement rate of the embankment after reinforcement with foamed mixture light soil is 3.7 mm,which is significantly lower than that before the reinforcement, and the settlement tends to be moderate, proving that the material has good reinforcement effect.

关 键 词:气泡混合轻质土 软土地基 既有高速公路 桥台 变形 

分 类 号:U416.1[交通运输工程—道路与铁道工程]

 

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