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。
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.
出处
《海洋工程》
CSCD
北大核心
2016年第3期63-71,共9页
The Ocean Engineering
基金
国家自然科学基金资助项目(51322904
51279127
41372291)
关键词
沉桩
溜桩
静力触探
能量守恒
单桩承载力
pile penetration
pile-running
PCPT
energy conservation
bearing capacity
