沉管隧道DCM区地基块石抛填振密施工技术  

Construction technology of block stone throw-fill vibro-densification in DCM area of immersed tube tunnel

作　　者：罗昌武 李进 陈伟乐 宁进进 LUO Chang-wu;LI Jin;CHEN Wei-le;NING Jin-jin(No.2 Engineering Co.,Ltd.of CCCC First Harbor Engineering Co.,Ltd.,Qingdao,Shandong 266071,China;CCCC First Harbor Engineering Co.,Ltd.,Tianjin 300461,China;Guangdong Highway Construction Co.,Ltd.,Guangzhou,Guangdong 510623,China)

机构地区：[1]中交一航局第二工程有限公司,山东青岛266071 [2]中交第一航务工程局有限公司,天津300461 [3]广东省公路建设有限公司,广东广州510623

出　　处：《中国港湾建设》2021年第5期65-69,共5页China Harbour Engineering

基　　金：广东省重点领域研发计划项目(2019B111105002)。

摘　　要：深中通道沉管隧道基础经设计变更后,在DCM区地基采用了1.1 m厚块石振密层+1.0 m碎石垫层方案。文章结合深中通道工程实例,分析了块石抛填振密施工技术在DCM区地基中的应用情况,同时结合现场实际施工探讨了该施工工艺的技术要点,系统研究了块石抛填振密施工关键参数和取得的应用效果,并总结出了一系列块石抛填振密主要施工方法,可为同类工程提供参考。After the design change of the foundation of Shenzhen-Zhongshan Link immersed tube tunnel,the scheme of 1.1 m thick block stone vibro-densification layer+1.0 m gravel cushion layer was adopted in the foundation of DCM area.Combined with the project example of Shenzhen-Zhongshan Link,we analyzed the application of block stone throw-fill vibro-densification construction technology in the foundation of DCM area,discussed the technical points of the construction technology combined with the actual construction,studied the key parameters and application effects of the block stone throwfill vibro-densification construction,and summarized a series of main construction technology,which can provide reference for similar projects.

关 键 词：沉管隧道 块石抛填 块石振密 DCM地基 多波束 

分 类 号：U655.4[交通运输工程—港口、海岸及近海工程]