大直径深长钻孔灌注桩桩长优化  

Optimum design of length of large-diameter bored cast-in-situ deep and long pile

作　　者：徐建军 马国平[2] 刘春燕 

机构地区：[1]北京水规院京华工程管理有限公司,北京100101 [2]中交第四航务工程勘察设计院有限公司,广东广州510230

出　　处：《水运工程》2017年第B05期45-48,共4页Port & Waterway Engineering

摘　　要：针对大直径深长钻孔灌注桩在分离卸荷式板桩码头结构中的应用成本控制问题,通过参考周边类似工程的实践经验、分析施工工艺的特点及施工方的实施水平等方法,对唐山港曹妃甸港区综合保税区通用泊位工程码头结构中大直径深长钻孔灌注桩桩长进行优化。结果表明:依据单桩极限承载力静载试验数据,并考虑灌注桩施工水平差异等因素,对灌注桩桩长进行优化,可达到降低工程造价的效果。Aiming at the problem of the costs control of large-diameter bored cast-in-situ deep and long piles used in separate unloading-caps type of sheet pile wharf structure, this paper analyzes the optimizing of the pile length of large-diameter bored cast-in-situ deep and long piles in Tangshan Harbor Caofeidian Port Zone Comprehensive Bonded Area Generic Berth construction, with the experience of similar engineering practice in the vicinity of the construction site, the characteristics of wharf structure and construction technology of the bored pile, etc.The results show that the data of ultimate axial bearing capacity of a single pile from static loading test and factors in bored pile operations are applied to the optimizing of the pile length, which can reduce the project cost.

关 键 词：灌注桩 单桩轴向极限承载力 静载荷试验 

分 类 号：U656.112[交通运输工程—港口、海岸及近海工程]