Page 39 - 2024年第55卷第9期
P. 39

[13] CHUNS,KIM K,GREENEJ,etal.Evaluationofinterlayerbondingconditiononstructuralresponsecharacter
                       isticsofasphaltpavementusingfiniteelementanalysisandfull - scalefieldtests [J].ConstructionandBuildingMa
                       terials,2015,96:307 - 318.
                [14] XIAX,LIUD.Interlayeraggregatesembeddednessindexanditscharacterizationforinterlayerbondingqualityof
                       roller - compactedconcrete [J].JournalofMaterialsinCivilEngineering,2023,35(10):04023331.
                [15] 刘东海,孙龙飞,夏谢天.不同 VC值下基于压实功的 RCC碾压参数控制标准确定方法 [J].水利学报,
                      2019,50(9):1063 - 1071.
                [16] MARQUESFJ,PAULONVA,MONTEIROPJM,etal.Developmentoflaboratorydevicetosimulateroller -
                       compactedconcreteplacement[J].ACIMaterialsJournal,2008,105(2):125 - 130.
                [17] 姜福田.碾压混凝土坝的层面与影响[J].水利水电技术,2008(2):19 - 21.
                [18] LIUD,LIZ,LIUJ.Experimentalstudyonreal - timecontrolofrollercompactedconcretedamcompactionquality
                       usingunitcompactionenergyindices[J].ConstructionandBuildingMaterials,2015,96:567 - 575.
                [19] 赵梦麒.心墙沥青混凝土碾压 PFC模拟及压实特性分析[D].天津:天津大学,2018.
                [20] 赵二峰,顾冲时.碾压混凝土坝安全服役关键技术研究进展[J].水利水电科技进展,2022,42(1):11 - 20.
                [21] 贾金生.碾压混凝土坝发展水平和工程实例[M].北京:中国水利水电出版社,2006.
                [22] 许尚杰,尹小 涛,马 双 科,等.基 于 颗 粒 流 的 混 凝 土 材 料 数 值 实 验 研 究 [J].实 验 力 学,2009,24(3):
                      251 - 258.
                [23] 刘国华,张宁.碾压混凝土碾压特性的三维离散元数值模拟[J].水电能源科学,2015,33(6):88 - 92.
                [24] 刘东海,马鸿雁,李 子 龙.新 拌 RCC单 轴 压 缩 试 验 的 PFC模 拟 及 细 观 参 数 反 演 [J].水 力 发 电 学 报,
                      2017,36(9):10 - 20.
                [25] LIUD,XIAX,CHEN J,etal.Integratingbuildinginformationmodelandaugmentedrealityfordrone - based
                       buildinginspection[J].JournalofComputinginCivilEngineering,2021,35(4):08221001.




                            StudyondiscreteelementsimulationofRCClayeredcompactionand
                                    meso - mechanism ofconstruction - inducedinterfaces

                                            LIUDonghai,MAZiru,SUNLongfei
                  (StateKeyLaboratoryofHydraulicEngineeringIntelligentConstructionandOperation,TianjinUniversity,Tianjin 300350,China)


                  Abstract:Theuniquelayeredcompactionprocessofalargeworkingareadeterminesthatthequalityofbondingbe
                  tweenlayersiskeytoensuringtheoperationsafetyofroller - compactedconcrete(RCC)dam.RevealingtheRCC
                  construction - inducedinterfacesmechanismfromtheperspectiveofconstructioncontrolandadjustingthecompaction
                  parameterscaneffectivelyensuretheconstructionquality.First ,thecompactionsettlementlaw,compactionde
                  gree ,andshearstrengthofRCCduringlayeredcompactionprocessweretested,providingabasisfordiscreteele
                  mentsimulation.Then ,thediscreteelementmodelsofRCCdouble - layercompactionandsheartestwereestab
                  lishedandverified.Finally ,theaggregateembeddingvaluewhichcharacterizesthejointsbondingqualitywasde
                  fined ,andthemeso - mechanismofRCCconstruction - inducedinterfaceswasanalyzedfromtheaspectsofporosity,
                  aggregateembedding, andjointsstressdistributionandshearstrength.Theresultsshow thattheincreaseof
                  excitingforceandthedecreaseofrollingspeedandliftthicknessarebeneficialtoimprovethejointsbondingquali
                  ty,andtheliftthicknessisthemostsensitivefactoraffectingthequality.Thisstudyprovidesatheoreticalsupport
                  forcontrollingthejointsbondingqualityduringRCCconstruction.
                  Keywords:roller - compactedconcretedam;construction - inducedinterfaces;meso - mechanism;jointsbonding
                  quality ;compactionparameters;discreteelementsimulation;compactiontest

                                                                                    (责任编辑:韩 昆)







                —  1 0 4 —
                     4
   34   35   36   37   38   39   40   41   42   43   44