泄水闸检修门库交通桥裂缝成因分析

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LEI Jinsong'，TU Yuetong²，FU Bingfa'，ZHONGSheng'，HUANGYaoying²，YU Jin² （1.AnhuiSuianostrutionoupCod.HeeiO，ina;2.Collgeofdrlic&viroetalEngga Three Gorges University，Yichang 443o02，China）

Abstract：Duetothecomplexserviceconditionsandfoundationconditionsofthetraficbridgeatthegatestorehouseonthelftank ofaflooddiversionsluiceinawateronservancyproject，accuratelydeterminingthecausesofcracksinconcretestructuresis chalenging.Thisstudyfirstqualitativelyanalyzedpotentialcrackingfactorsbasedonserviceconditionsandfoundationselment monitoringdata.A3Dfiniteelementmodeloftheentiregatestorehouseoftheflooddiversionsluicewasthenestablished.Dierent calculationconditions weredesignedconsidering threemaincrackingfactors：heavytruckload，unevensetlementoffoundationnd temperatureload.Linearelasticfiniteelementmodels，viscoelasticfiniteelementmodels，andtemperaturestressfieldsimulation models wereusedtocalculatetheorzontalstressintheraficbridgeatthegatestorehousecausedythesefactors，imingtoploe thecausesofcracks.Theresultsshowthatthecouplingofadversetemperaturedropload inwinterandunevensetlementof the foundationgeneratesapproximately3MPaof tensilestresatthemidlepositionofthetraficbridgeatthegatestorehouse.By comparingwiththeactualcracklocationsonthetraficbridge，itisconcludedthatthecombinationofthsetwofactorsisteprary causeofcracks，whiletheheavytruckloadisnotthemaincontributingfactor.Thisresearchprovidesareferenceforcrackcause analysis in similar engineering projects.

Keywords： concrete crack; cause analysis; heavy truck;uneven settlement of foundation;temperature load

在施工期或运行期，水工混凝土结构受众多因 素的影响，难免会产生裂缝。（剩余9042字）