旋喷桩在软土地区既有地下管线加固中的应用

Application of Rotating Spraying Pile in Reinforcement of Existing Underground Pipelines in Soft Soil Area

对工程范围内的既有地下管线,一般应拆改、迁移,但当地下管线为大直径自来水管、高压输变电电缆等,且与居民正常生活、生产关系密切而无法拆改时,必须考虑对其进行就地加固。该文通过津汉公路-机场大道立交桥工程中既有地下管线加固的设计过程,介绍了一种滨海地区行之有效的保护既有地下管线的加固措施——旋喷桩,为旋喷桩在今后类似工程中的应用提供了参考。

It is generally to demount and remove the existing underground pipelines within the range of the engineering projects.But when the underground pipelines are the large-diameter water supply pipeline,high-voltage transformer distribution cable and etc.and can not be demounted because of closely relating with the normal life of the residents and the production,it must be considered to carry out the local reinforcement of the pipelines.Through the design process of the existing under- ground pipeline reinforcement in Jinhan Highway-Airport Avenue Interchange Project,the article introduces a reinforcement measure-rotating spraying pile effectively to protect the existing under- ground pipelines in the seaside areas,which provides the reference for the application of rotating spraying pile in the future similar projects.