自升式平台插拔桩对邻近桩靴影响的研究-431cbd37.pdf

海洋工程

DOI：10.3969/j.issn.1001-2206.2023.05.001

自升式平台插拔桩对邻近桩靴影响的研究

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刘贤玉，王巍，董志滟，赵宝祥，王成龙，陈力

1.中海石油（中国）有限公司湛江分公司，广东湛江524057

2.中石化胜利石油工程有限公司钻井工艺研究院，山东东营257000

摘要：为了分析桩靴插拔过程对邻近桩靴承载力的影响，基于Plaxis2D的有限元模型完成桩靴插拔对邻近

桩靴影响的研究，基于Plaxis3D的有限元模型完成桩靴插拔对桩靴承载力影响的研究。开展了桩靴插拔的模

型试验研究，将试验结果与理论分析结果相结合，研究结果表明：两桩靴在不同间距情况下，预定贯入深度

处的桩靴承载力小于这一间距的最大贯入阻力，则桩靴承载力发生折减，且承载力折减率随桩靴间距增大而

减小。

关键词：自升式钻井平台；桩靴插拔；数值模拟；模型试验；承载力

Studyontheinfluenceofpileinsertionandremovalofjack-upplatformon

adjacentpileshoes

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LIUXianyu,WANGWei,DONGZhiyan,ZHAOBaoxiang,WANGChenglong,CHENLi

1.ZhanjiangBranch,CNOOCChinaLimited,Zhanjiang524057,China

2.DrillingTechnologyResearchInstituteofSinopecShengliPetroleumEngineeringCo.,Ltd.,Dongying257000,China

Abstract：Thispaperaimstoanalyzetheinfluenceofpileshoeinsertionandremovalonthebearingcapacityofadjacentpileshoe

foundations.BasedonthefiniteelementmodelofPlaxis2D,thispaperstudiestheinfluenceofpileshoeinsertionandremovalon

adjacentpileshoes.Inaddition,thefiniteelementmodelofPlaxis3Disusedtostudytheinfluenceofpileshoeinsertionandremovalon

thebearingcapacityofpileshoes.Themodeltestofpileinsertionandremovaliscarriedout.Thetestresultsarecombinedwiththe

theoreticallyanalyzedresults.Itisfoundthatunderdifferentspacingconditions,thefoundationbearingcapacityofthepileshoesatthe

predeterminedpenetrationdepthissmallerthanthemaximumpenetrationresistanceofthespacing.Thefoundationbearingcapacityis

reduced,andthereductionrateofbearingcapacitydecreaseswiththeincreaseinpileshoespacing.

Keywords：jack-updrillingplatform;pileshoeinsertionandremoval;numericalsimulation;modeltest;bearingcapacity

[1][2]

自升式钻井平台在进行海上钻修井作业时，少。SY/T6707—2008《海洋井场调查规范》仅

主要依靠桩腿底部的大直径桩靴贯入到泥面下一