预应力混凝土预制桩极限抗压承载力预测研究及应用  

Prediction and Application of Ultimate Bearing Capacity of Prestressed Concrete Toothed Pile under Pressure

作　　者：成建强[1,2] 唐龙龙 曹胜敏 李永[1,2] Cheng Jianqiang;Tang Longlong;Cao Shengmin;Li Yong(CCCC First Harbor Consultants Co.,Ltd.,Tianjin 300220,China;Tianjin Municipal Key laboratory of Geotechnical and Structure of Coast and Offshore Engineering,Tianjin 300222,China)

机构地区：[1]中交第一航务工程勘察设计院有限公司,天津300220 [2]天津市海岸与近海工程岩土与结构重点实验室,天津300222

出　　处：《港口航道与近海工程》2025年第1期64-69,共6页Port,Waterway and Offshore Engineering

摘　　要：预应力混凝土预制桩作为最常见基桩类型之一,不仅承载能力优异,而且现场施工方便有效可靠。通过混凝土预制桩实测单桩竖向抗压静载试验数据,建立多种基桩抗压极限承载能力的模型,进而得到优化后的预测模型。华北沿海某燃料油码头陆域共14个建筑单体,基桩类型均采用预应力混凝土预制竹节桩,但各单体上部荷载差异较大,而桩型、桩长大致相同;因此依托该预测模型对该项目中竹节桩基桩极限承载力进行预测,从而对各单体基桩桩长设计进行针对性优化,并考虑一定安全系数,以达到节省工程量,降低工程造价,优化设计方案的目的。As one of the most common types of foundation piles,prestressed concrete precast piles not only have excellent bearing capacity,but also are convenient,effective,and reliable for on-site construction.By measuring the vertical compressive static load test data of precast concrete piles,various models for the ultimate compressive bearing capacity of foundation piles are established,and optimized prediction models are obtained.There are a total of 14 individual buildings in the land area of a fuel oil terminal along the coast of North China.The foundation piles are all pre-stressed concrete prefabricated bamboo piles,but the upper loads of each individual building vary greatly,while the pile types and lengths are roughly the same;Therefore,based on this prediction model,the ultimate bearing capacity of bamboo joint piles in the project is predicted,and targeted optimization of the pile length design of each individual pile is carried out,taking into account a certain safety factor,in order to save engineering quantity,reduce engineering costs,and optimize the design scheme.

关 键 词：预应力混凝土预制桩 抗压静载试验 数值模型 极限承载力预测模型 成本优化 

分 类 号：TU473.1[建筑科学—结构工程]