钢管板桩结合的新型码头结构形式的基桩施工工艺  

Construction Technology for a New Type Quay Wall of Steel Tubular-Sheet Pile Combined Structure

作　　者：曾青松[1] 王福强[1] 薛瑞龙[1] 

机构地区：[1]中交第四航务工程勘察设计院有限公司,广东广州510230

出　　处：《中国港湾建设》2012年第5期47-49,共3页China Harbour Engineering

摘　　要：随着船舶大型化和施工工艺水平的提高，一种新型结构类型——钢管板桩组合结构逐渐得到较广泛的应用，但由于桩基施工困难，通常仅应用于砂土或中等硬度黏土地基。文中介绍了一种以桩内旋挖取土的“打挖结合”的沉桩工艺，可实现直径2m的钢管桩穿透厚度6-9m平均标准贯入击数大于80～120击的砂砾石胶结土层，可满足组合结构的精度要求及设计要求的入土深度，该工艺具有很强的现实意义和工程价值，可以为类似的工程提供借鉴。With the development of large-scale ship and improvement of construction technology, a new type of steel tubular-sheet pile combined structure has been used widely. This structure is only used for sand soil or medium-hard clay foundation caused by construction difficulties of pile foundation. This paper introduces a named ＂combined driving with excavating＂ pile sinking technology, which has rotary drilling for soil in pile. It is realizable to use 2 m diameter steel pipe pile to penetrate gravel glued layer, which is 6-9 m thickness, and has more than 80-120 blow count of SPT. It can achieve the accuracy and design requirements of penetration depth. The technology has practical significant and engineering value as well as it sets up a good example for other similar engineering works.

关 键 词：新型码头结构形式 钢管板桩组合结构 基桩 施工工艺 

分 类 号：U655.551[交通运输工程—港口、海岸及近海工程] U656.112[交通运输工程—船舶与海洋工程]