静压法预应力管桩压桩力估算方法对比分析  

STUDY ON ESTIMATION METHODS OF PILE PRESSURE OF PRESTRESSED PIPE PILE BY STATIC PRESSURE METHOD

作　　者：金建敏 陈飞 戴道永 徐凯鹏 张燎原 叶观宝[2] JIN Jianmin;CHEN Fei;DAI Daoyong;XU Kaipeng;ZHANG Liaoyuan;YE Guanbao(Zhejiang Jiaotou expressway construction management Co.,Ltd.,Hangzhou 310024,China;Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]浙江交投高速公路建设管理公司,杭州310024 [2]同济大学地下建筑与工程系,上海200092

出　　处：《低温建筑技术》2024年第4期35-38,44,共5页Low Temperature Architecture Technology

基　　金：国家自然科学基金项目(42372317);浙江交投高速公路建设管理公司科研项目(TJ2021499721)。

摘　　要：为对比分析静压法预应力管桩的不同压桩力估算方法,文中以瑞苍高速公路(龙丽温至甬台温复线联络线工程)为例,选择4个典型压桩力经验公式,利用实测数据和计算结果进行对比分析。研究确定出最符合工程实际的估算公式,并结合规范规定的承载力计算公式,得到承载力与设计压桩力的经验关系,最终确定各标段不同设计桩长的设计压桩力。研究为同类工程设计施工提供了借鉴。Taking Ruicang Expressway as the case,pile pressure estimation methods of prestressed pipe piles by static pressure method are compared.Four typical empirical formulas of pile pressure are selected for comparative analysis by using measured data and calculation results.The estimation formula that is most consistent with the project is determined.Combined with the bearing capacity calculation formula in the code,the empirical relationship between bearing capacity and design pile pressure is obtained,and the design pile pressure of different design pile lengths in each bid section is finally determined.

关 键 词：预应力管桩 设计压桩力 压桩力估算 

分 类 号：TU473.11[建筑科学—结构工程]