施工技术 2012年3月上 52 CONSTRUCTION TECHNOLOGY 第41卷第360期 海上超长超深嵌岩钻孔灌注桩施工技术 陈日胜1，周翰斌2 (1.中交四航局第一工程有限公司，广东广州510500； 2:中交第四航务工程局有限公司，广东广州510231) [摘要]以马来西亚槟城二桥工程为依托，研究了最大钻孔深度达133.15m、嵌入微风化硬岩的最大厚度达10m、覆 盖层以砂层与粉砂层为主的海上钻孔灌注桩的主要施工工艺和控制方法，包括施工平台布置、设备选型及改进、泥 浆控制、成孔参数调整、水下混凝土配制与灌注等.解决了该工程钻孔灌注桩施工中的重大技术难题. [关键词]桥梁工程；斜拉桥；钻孔灌注桩；嵌岩；施工技术 [中图分类号]U445.551[文献标识码]A[文章编号]1002-8498(2012)05-0052-05 Construction Technology of Super-deep Bored Pile with Built-in-super-thick-rock Offshore Chen Risheng' Zhou Hanbin2 (1.The First Engineering Company of CCCC Fourth Harbor Engineering Co. Lad.Guangzhou Guangdong 510500 China; 2.CCCC Fourth Harbor Engineering Co.Ltd.Guangahou Guangdong 510231 China) Abstract:Based on the Penang Second Bridge project in Malaysia at the conditions of the maximum boring depth reaches 133.15m and the maximum thickness built-in-slightly weathered hard-rock reaches 10m and the covered layers mostly are sand layers and mealy sand layers primary construction technologies and control methods for bored piles in sea are studied including the layout of construction platform equipment selection and its amelioration slurry control adjusting boring parameters concrete preparation and pouring under the water and so on.The difficulties are solved by primary construction technologies and control methods finally. Key words:bridges cable-stayed bridges;bored piles;rock-socketed;construction 1工程概况 长度范围内桩径为230cm 其他部分桩径为200cm. 马来西亚槟城二桥是目前中国企业在境外实灌注桩柱长为102.115~126.905m 从施工平台面 施的最长跨海桥梁项目，在中国海外建桥史上将具高程3....
海上超长超深嵌岩钻孔灌注桩施工技术.pdf
