建筑施工第45卷·第8期1691-----SCIENTIFRESEARCH究科研学基于有限元分析的超长桩钢筋笼吊装施工技术高博中铁电气化局集团北京建筑工程有限公司北京100036摘要：目前国内外对于超长钻孔灌注桩钢筋笼吊点设置的合理性缺乏理论支持，施工现场多数靠施工经验判断吊点的位置，虽然钢筋笼允许产生弹性变形，但吊点设置不合理易引发钢筋笼变形过大、散架解体，对桩钢筋笼吊装安全性影响大。因此需要借助Midas有限元软件对钢筋笼从水平起吊至竖向入孔的过程进行分析，通过不同的吊点设置方案，找出钢筋笼应力集中区域和变形最大位置，总结出吊点设置的规律，为类似工程指导施工提供借鉴。关键词：Midas；钢筋笼；吊点设置；挠度；应力中图分类号：TU753文献标志码：A文章编号：1004-1001(2023)08-1691-04DOl:10.14144/j.cnki.jzsg.2023.08.055ConstructionTechnologyforHoistingReinforcementCagesofExtraLongPilesBasedonFiniteElementAnalysisGAOBoChinaRailwayElectrificationEngineeringGroupBeijingConstructionEngineeringCo.,Ltd.,Beijing100036,ChinaAbstract:Atpresent,thereisalackoftheoreticalsupportathomeandabroadfortherationalityofthehoistingpointsettingforthereinforcementcageofultralongboredpiles.Mostconstructionsitesrelyonconstructionexperiencetodeterminethepositionofthehoistingpoints.Althoughthereinforcementcageallowsforelasticdeformation,improperliftingpointssettingcaneasilyleadtoexcessivedeformationanddisassemblyofthereinforcementcage,whichhasasignificantimpactonthesafetyofpilereinforcementcagehoisting.Therefore,usingMidasfiniteelementsoftware,theprocessofliftingthereinforcementcagefromhorizontaltoverticalintotheholeisanalyzed.Throughdifferentliftingpointsettingschemes,thestressconcentrationareaandthemaximumdeformationpositionofthereinforcementcagearefoundout,andtherulesoflftingpointsettingaresummarized,whichcanprovidesreferenceforsimilarprojectstoguideconstruction.Keywords:Midas;reinforcementcage;hoistingpointssetting;deflection;stress随着城市建设规模的不断扩大，超长超大型钻孔灌注桩基础应用越来越多，桩钢筋笼吊装安全性成为施工管控的重点。施工现场进行钢筋笼吊装时，一般靠施工队伍经验来估计吊点的设置位置和采用加强筋对钢筋笼进行加固，施工...
