| 基于能量法的大直径超长钢管桩溜桩问题分析 |
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| 引用本文： | 闫澍旺,陈浩,贾沼霖,林澍,孙立强.基于能量法的大直径超长钢管桩溜桩问题分析[J].海洋工程,2016,34(3):63-71. |
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| 作者姓名： | 闫澍旺 陈浩 贾沼霖 林澍 孙立强 |
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| 作者单位： | 天津大学 建工学院，天津 300072;天津大学 建工学院，天津 300072;1. 天津大学 建工学院，天津 300072; 2. 华电重工股份有限公司博士后科研工作站，北京 100070;天津大学 建工学院，天津 300072;天津大学 建工学院，天津 300072 |
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| 基金项目： | 国家自然科学基金资助项目（51322904; 51279127; 41372291） |
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| 摘 要： | 海洋桩平台采用大直径超长桩,由于桩、锤的重量很大,沉桩过程中经常发生溜桩现象。因此为了便于打桩控制,判断溜桩的范围是非常必要的。结合实际工程对溜桩的过程和发生机理进行了探讨;利用PCPT原位测量资料,基于能量法建立了判断溜桩范围的分析计算方法。针对南海油田典型的平台桩沉桩过程中的溜桩问题进行了分析计算,验证了所提出的方法的合理性,可供桩设计以及沉桩施工参考。
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| 关 键 词： | 沉桩 溜桩 静力触探 能量守恒 单桩承载力 |
Research on the mechanism and calculation method for pile-running of long and large diameter piles based on energy conservation method |
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| YAN Shuwang,CHEN Hao,JIA Zhaolin,LIN Shu and SUN Liqiang.Research on the mechanism and calculation method for pile-running of long and large diameter piles based on energy conservation method[J].Ocean Engineering,2016,34(3):63-71. |
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| Authors: | YAN Shuwang CHEN Hao JIA Zhaolin LIN Shu and SUN Liqiang |
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| Institution: | School of Civil Engineering, Tianjin University, Tianjin 300072, China;School of Civil Engineering, Tianjin University, Tianjin 300072, China;1. School of Civil Engineering, Tianjin University, Tianjin 300072, China; 2. Huadian Heavy Industries Co., LTD., Beijing 100070, China;School of Civil Engineering, Tianjin University, Tianjin 300072, China;School of Civil Engineering, Tianjin University, Tianjin 300072, China |
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| Abstract: | Super long and large diameter piles are commonly adopted for constructing ocean platform foundations. The pile-running phenomenon frequently takes place because of the great weight of both the pile and the hammer. The mechanism of pile-running is discussed associated with case analysis. A predicting procedure is established based on the energy conservation method of the running pile. The suggested method is used to predict a pile-running case in a practical project in the South China Sea, and the calculated results agree well with the observed data. |
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| Keywords: | pile penetration pile-running PCPT energy conservation bearing capacity |
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