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Analysisandresearchontechnicalparametersofhigh - powervibro - vibration
reinforcementforultra - deepsoftsoilfoundation
3
1
3
1,2
2
CHENZuyu ,HUMingtao,WEIYongxin,TIANYinghui,ZHAOYufei,HUMinyun 2
(1.StateKeyLaboratoryofEco - HydraulicsinNorthwestAridRegion,Xi’anUniversityofTechnology,Xi’an 710048,China;
2.StateKeyLaboratoryofBasinWaterCycleSimulationandRegulation,ChinaInstituteofWaterResourcesand
HydropowerResearch,Beijing 100048,China;
3.HuadianJinshaRiverUpstreamHydropowerDevelopmentCo.,Ltd.,Chengdu 610020,China)
Abstract:ThecofferdamintheupperreachesofLawaHydropowerStationis60mhighanditsfoundationiscom
posedoflowliquidlimitclayandsiltysoillayersabout50mthickdepositedbybarrierlakesediments.Inorderto
ensurethesafetyandreliabilityofcofferdamconstruction ,itisnecessarytostrengthenthedeepsoftsoilfoundation
byutilizingvibro - replacementcolumns.Basedon158millionmeasureddatacollectedbytheremoteconstruction
controlplatformoftheInternetofThings,thisstudyestimatedthevolumereplacementrateandcolumndiameterof
thevibriocrushedstonecolumn ,andinitiallyevaluatedthereinforcementeffectofthecompositefoundationofthe
vibriocrushedstonecolumn.Theresultsshowthatthecolumnspacinghasasignificanteffectonthevolumere
placementrate.Whenthespacingis2.5m ,theaveragecolumndiameteris1.16m andthevolumereplacement
rateis15.10%.Whenthespacingis3.0m ,theaveragecolumndiameteris1.09m,andthevolumereplacement
rateis10.87%.Thestudyalsofoundthatthehardnessofthestratumandthelevelofconstructionoperationwillaf
fectthediameterofthecolumn,andlocaldiameterreductioniseasytooccurattheweakinterlayer.Thelengthof
theencryptionsectionshouldbestrictlycontrolledwithintherangeof0.5 - 1.0m,andtheencryptioncurrentand
vibrationretentiontimeshouldbecontrolledtomeettheconstructionstandards.Basedontheapplicationofintelli
gentconstructionmonitoringsystem ,thisstudyprovidespreliminaryresultsofscientificdemonstrationforthequali
tycontrolanddetectionofvibro - replacementstonecolumnreinforcementtreatmentondeepsoftsoilfoundationand
comprehensiveevaluationofthereinforcementeffectofcompositefoundation,andcanprovidereferenceforthere
inforcementdesignofvibro - replacementstonecolumn.
Keywords:deepcoveringlayer;vibro - replacementstonecolumn;IOTremoteconstructioncontrol;encryption
current ;replacementrate;columndiameter;qualityeffectevaluation
(责任编辑:李 娜)
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