第42卷第4期2023年7月Vol.42No.4Jul.2023JOURNALOFHENANPOLYTECHNICUNIVERSITY(NATURALSCIENCE)河南理工大学学报(自然科学版)地下粮仓内衬聚丙烯防水构件复合受力试验张昊,李军,常哲,王振清(河南工业大学土木工程学院,河南郑州450001)摘要:为解决地下粮仓仓壁防水难题,设计和制作内衬聚丙烯塑料-混凝土仓壁试件,并对其进行轴压和水压复合加载试验,研究内衬塑料防水构件在轴压和水压共同作用下的破坏形态和内力变化规律,得到了聚丙烯内衬塑料防水构件的水压承载力。结果表明:轴压保持在1800kN,水压达到153kPa时,节点焊缝发生未完全破坏;水压加载至160kPa时,塑料防水板发生破裂;塑料防水板的位移随荷载增大而增大,跨中位移远大于节点位移,最大位移为5.8mm;塑料防水板应变随荷载增大而增大,四节点跨中应变小于节点和两节点跨中应变,且应变最大值分布不均匀。研究结果可为地下粮仓和类似地下结构的防水防潮设计提供参考。关键词:地下粮仓;聚丙烯;节点;轴压;水压中图分类号:TU57文献标志码:A文章编号:1673-9787(2023)4-172-7CompositemechanicaltestofpolypropylenewaterproofcomponentlininginundergroundgranaryZHANGHao,LIJun,CHANGZhe,WANGZhenqing(SchoolofCivilEngineering,HenanUniversityofTechnology,Zhengzhou450001,Henan,China)Abstract:Inordertosolvethewaterproofproblemoftheundergroundgranarywall,theliningpolypropyleneplastic-concretespecimenwasdesignedandproduced,andthecompositeloadtestwascarriedoutsub‐jectedtocombinedaxialpressureandwaterpressure.Thefailuremodeandinternalforcevariationoftheplasticwaterproofcomponentsubjectedtocombinedaxialcompressionandwaterpressurewerestudiedandanalyzed,andtheultimatewaterpressurebearingcapacityofthepolypropyleneplasticwaterproofcompo‐nentwasobtained.Thetestresultsshowedthatunderaxialpressureof1800kN,thejointweldswerenotcompletelydestroyedwithwaterpressurereaching153kPaandtheplasticwaterproofplaterupturedwiththewaterpressureincreasingto160kPa.Thedisplacementoftheplasticwaterproofplateincreasedwiththeincreaseoftheload,andthemid-spandisplacementwasmuchlargerthanthenodedisplacement,themaxi‐mumdisplacementwas5.8mm.Thestrainofplasticwaterproofplateincreasedwiththein...