内肋增强聚乙烯螺旋波纹管抗震性能模拟分析.pdfVIP

2025年5期江西建材工程技术与应用

内肋增强聚乙烯螺旋波纹管抗震性能模拟分析

鲍安政

安顺市供水总公司，贵州安顺561000

摘要：为推动内肋增强聚乙烯螺旋波纹管抗震性能在工程实践中的应用，文中基于有限元仿真方法，构建了土-管耦合作用的三维

数值模型，并结合时程分析法系统研究PE管在9度地震烈度下的应力和变形特征。结果表明，直径550mm、埋深5m的管道各向应

力均较低，在独立管体和土-管耦合两种工况下，VonMises应力分别为0.0275MPa和0.0395MPa，显著低于聚乙烯材料的屈服应

力（20MPa）；两种工况下的最大变形分别为0.954mm和0.892mm，均在1mm阈值内，满足规范要求。综上，在内肋增强的情况下，

聚乙烯螺旋波纹管的抗震性能均可得到满足。

关键词：螺旋波纹管；内肋增强；抗震性能；数值模拟

中图分类号：TU99文献标识码：B

SimulationAnalysisofSeismicPerformanceofInnerRibbedReinforced

PolyethyleneSpiralBellows

BaoAnzheng

AnshunWaterSupplyCorporation,Anshun,Guizhou561000

Abstract:Inordertopromotetheseismicperformanceofinnerribbedpolyethylenespiralbellowsinengineeringpractice,athree-dimensional

numericalmodelofsoil-pipecouplingwasconstructedbasedonfiniteelementsimulationmethod,andthestressanddeformation

characteristicsofPEpipeunder9degreeseismicintensityweresystematicallystudiedbyusingtime-historyanalysismethod.Theresults

showedthatthepipewithadiameterof550mmandburieddepthof5mhadlowstressinalldirections,andtheVonMisesstresswas

0.0275MPaand0.0395MPaunderindependentpipeandsoil-pipecouplingconditions,respectively,whichwassignificantlylowerthan

theyieldstressofpolyethylenematerial(20MPa).Themaximumdeformationunderthetwoworkingconditionsis0.954mmand0.892mm

respectively,bothwithintheImmthreshold,meetingtherequirementsofthespecification.Inconclusion,theseismicperformanceof

polyethylenespiralbellowscanbesatisfiedwhentheinnerribsarereinforced.

Keywords:Spiralbellows;Internalribenhancement;Seismicperformance;Numericalsimulation

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