中国塑料2025，Vol.39Issue(9)：93-100,8.DOI:10.19491/j.issn.1001-9278.2025.09.015
多口径高性能聚氯乙烯管道爆管试验与压力计算
Burst tests and pressure calculations for PVC-UH pipes with various diameters
摘要
Abstract
In this study,the burst pressure calculation methods for PVC-UH pipes were investigated through experimen-tal and theoretical analysis.Burst tests were conducted on four types of small-to-medium diameter pipes to evaluate the applicability and accuracy of various burst pressure calculation theories.Based on the material characteristics of PVC-UH,a new calculation method was proposed using a plastic deformation criterion.The results indicated that convention-al metal pipe formulas were unsuitable for PVC-UH pipes.When using nominal yield strength as the calculation parame-ter,the TSSY criterion,modified Nadai,Bailey-Nadai,Welling-Uebing,Turner,Bailey,ASME,Barlow series,maximum stress guidelines,maximum shear stress guidelines,and Zhu-Leis method are appropriate.For true breaking strength,the Tresca criterion,Marin-2,Svenson,Bohm,and API methods are recommended.The most accurate re-sults were obtained using the average of nominal yield strength and true fracture strength.A 0.4%residual strain failure criterion was proposed,which demonstrated through twofold elastic deformation analysis that PVC-UH pipes fail at 1.7%circumferential strain.The derived plastic deformation-based formula shows excellent agreement with experimen-tal data,providing reliable technical support and theoretical basis for PVC-UH pipe burst pressure calculation.关键词
聚氯乙烯/管/爆管压力/计算对比/塑性变形失效准则Key words
poly(vinyl chloride)/pipe/burst pressure/calculation comparison/plastic deformation failure criterion分类
化学化工引用本文复制引用
李伟,唐鹏飞,潘栋,石拓,莫淑蓓..多口径高性能聚氯乙烯管道爆管试验与压力计算[J].中国塑料,2025,39(9):93-100,8.基金项目
交通运输行业重点科技项目(2022-ZD7-127) （2022-ZD7-127）
中国博士后科学基金面上项目"地区专项支持计划"(2023MD744182) （2023MD744182）
