澳凼第四条跨海大桥工程中超大直径入岩桩施工工艺关键技术分析探讨  

Analysis and Discussion on Key Techniques of Construction Technology of Super Large Diameter Rock-in Pile in the Fourth Sea-crossing Bridge in Australia

作　　者：沈朝旭 SHEN Chaoxu(Jilin Hydrogeological Survey Institute,Changchun,Jilin Province,130012 China)

机构地区：[1]吉林省水文地质调查所,吉林长春130012

出　　处：《科技创新导报》2020年第29期18-23,共6页Science and Technology Innovation Herald

摘　　要：钻孔桩技术在跨海工程建设中的应用不仅降低施工的时间成本、人员成本、工程量以及相关物料的成本同时也为跨海工程质量提供优质保障。国内首次采用超大直径护筒入岩施工工艺并利用可视化系统的旋挖钻机配合施工,解决了全回转下护筒至中风化岩面的难题,确保工程建设项目的顺利进行,同时也为今后类似工程提供相关参考资料。The application of bored pile technology in the construction of cross-sea projects not only reduces construction time cost,personnel cost,engineering quantity and cost of related materials,but also provides high-quality guarantee for the quality of cross-sea projects.For the f irst time in China,the super-largediameter protective tube into the rock construction technology and the use of the visualization system of the rotary drilling rig to cooperate with the construction have solved the problem of the full-rotation lower protective tube to the medium weathered rock surface,ensuring the smooth progress of the construction project,and also provides relevant reference materials for the future similar project.

关 键 词：跨海工程 全套管全回转 质量控制 关键点 施工 工艺 

分 类 号：U445[建筑科学—桥梁与隧道工程]