双向水泥搅拌桩在路桥过渡段路基加固处理中的应用

Application of Bidirectional Cement Mixing Pile in Roadbed Reinforcement Treatment of Road Bridge Transition Section

为了保障路桥连接处行车安全和行车舒适性,避免出现桥头跳车现象,文中以东营至青州高速公路改扩建工程施工一标段为例,针对路桥过渡段存在的软弱下卧层,采用双向水泥搅拌桩进行路基加固处理,通过对“两搅两喷”施工工艺进行分析,发挥了水泥浆搅拌桩操作简单、过程可控、加固深度大、加固效果好的应用优势,实现了路桥连接处的平稳过渡。

In order to ensure the safety and comfort of driving at the junction of roads and bridges,and to avoid the phenomenon of bridge head jumping,taking the construction of the first section of the Dongying to Qingzhou Expressway renovation and expansion project as an example,a bidirectional cement mixing pile was used for roadbed reinforcement treatment in the weak underlying layer of the road bridge transition section.Through the analysis of the"two mixing and two spraying"construction technology,the cement mixing pile was used with simple operation and controllable process The application advantages of large reinforcement depth and good reinforcement effect have achieved a smooth transition at the road bridge connection.