钢丝网骨架聚乙烯管凹陷力学性能研究  

STUDY ON THE MECHANICAL PROPERTIES OF STEEL WIRE MESH-REINFORCED POLYETHYLENE PIPES UNDER INDENTATION

作　　者：傅小坚 张晓楠 阮伟东 徐忠立 FU Xiaojian;ZHANG Xiaonan;RUAN Weidong;XU Zhongli(Tongchuang Engineering Design Company Ltd.,Zhejiang Shaoxing 312000,China;College of Civil Engineering,Zhejiang University of Technology,Hangzhou 310023,China)

机构地区：[1]同创工程设计有限公司,浙江绍兴312000 [2]浙江工业大学土木工程学院,杭州310023

出　　处：《低温建筑技术》2024年第9期41-44,共4页Low Temperature Architecture Technology

基　　金：浙江省属高校基本科研业务费专项资金资助项目(RF-A2022006);宁波市自然科学基金项目(2021J039)。

摘　　要：为获得凹陷作用下钢丝网骨架聚乙烯复合管的力学性能,文中采用ABAQUS商用软件建立凹陷作用下钢丝网骨架聚乙烯复合管有限元模型,基于拉伸试验引入高密度聚乙烯(HDPE)和高强度钢丝非线性本构模型,研究凹陷深度以及管道内压对PSP管力学性能(Mises应力、塑性累计损伤PEEQ)的影响规律。经研究表明管道凹陷深度对于PSP管HDPE材料的应力及应变情况影响巨大,管道应力及累计塑性应变都随凹陷深度增加而不断增大;当管道内压载荷小于3 MPa时,管道内压主要由高强度钢丝承受。To investigate the mechanical properties of steel wire mesh-reinforced polyethylene(PE)composite pipes under indentation effects,this study employs the ABAQUS commercial software to establish a finite element model of the composite pipe under such conditions.By incorporating nonlinear constitutive models for high-density polyethylene(HDPE)and high-strength steel wire based on tensile tests,the study examines the impact of indentation depth and internal pressure on the mechanical performance of the PSP pipe,including Mises stress and cumulative plastic damage(PEEQ).The study reveals that the indentation depth significantly affects the stress and strain behavior of the HDPE material in the PSP pipe.Both the stress and cumulative plastic strain of the pipe increase with the depth of indentation.Additionally,when the internal pressure load is less than 3 MPa,the internal pressure is primarily borne by the high-strength steel wire.

关 键 词：钢丝骨架 聚乙烯管 高强度钢丝 塑性应变 

分 类 号：TU990.3[建筑科学—市政工程]