第5卷第1期地基处理Vol.5No.12023年1月JournalofGroundImprovementJan.2023高压旋喷桩在海上风电桩周土加固中的应用郭琼玲（福建省岩土与环境企业工程技术研究中心/福建永强岩土股份有限公司，福建龙岩364000）摘要：目前海上风电桩基础在海洋动力环境作用下出现过度水平位移的现象，通常采用增加桩径的方法来提高桩基水平承载力，造成钢管桩制作成本增加，施工难度大大提高，制约海上风电发展。本文结合海上风电工程实例，开展海洋地基加固技术对海上风电桩基础水平承载力影响的研究，探讨高压旋喷桩加固技术在海洋环境下的加固深度、工艺参数、加固效果等。通过加固后现场取芯及有限元实体模型验算结果表明，采用高压旋喷桩加固技术可有效强化风机桩周土层的刚度，达到提高桩基水平承载力、减小桩基础水平位移和降低工程成本的目的。可为海上风电工程防灾减灾提供技术支撑，具有重要的社会效益和推广应用价值。关键字：海上风电；水平荷载；土抗力；高压旋喷桩；有限元分析中图分类号：TU472文献标识码：A文章编号：2096–7195(2023)01–0062–05ApplicationofthehighpressurejetgroutingpileinsoilreinforcementaroundoffshorewindpowerpileGUOQiong-ling(GeotechnicalandEnvironmentalEnterpriseEngineeringTechnologyResearchCenterofFujianProvince/FujianYonkingGeotechnicalCo.,Ltd.,Longyan364000,Fujian,China)Abstract:Inviewofthephenomenonofexcessivehorizontaldisplacementofoffshorewindpowerpilefoundationindynamicmarineenvironment,themethodofincreasingpilediameterisusuallyusedtoimprovethehorizontalbearingcapacityofpilefoundation.However,thismethodwillincreasethecostofsteelpipepilesandincreasethedifficultyofconstruction,whichwillultimatelyrestrictthedevelopmentofoffshorewindpower.Basedontheexampleofoffshorewindpowerproject,thispaperstudiestheinfluenceofoffshorefoundationreinforcementtechnologyonthehorizontalbearingcapacityofoffshorewindpowerpilefoundation.Inaddition,thereinforcementdepth,processparameters,andreinforcementeffectsofthehighpressurejetgroutingpilereinforcementtechnologyinthemarineenvironmentarediscussed.Theresultsofin-sitecoringandfiniteelementmodelanalysisshowthatthehighpressurejetgroutingpilereinforcementtechnologycaneffectivelystrengthenthes...
