螺旋焊孔网钢带复合热力管强度的温度效应分析  

Temperature Effect Analysis on the Strength of Spiral Welded Mesh Steel Polyethylene Composite Pipe

作　　者：王蕾 黄学伟[2] WANG Lei;HUANG Xuewei(Geological Engineering Technical School of Henan Province, Zhengzhou 450015, China;School of Mechanics & Engineering Science, Zhengzhou University, Zhengzhou 450001, China)

机构地区：[1]河南省地质工程技术高级学校,郑州450015 [2]郑州大学力学与工程科学学院,郑州450001

出　　处：《机械工程师》2017年第4期86-89,共4页Mechanical Engineer

基　　金：河南省高等学校重点科研项目计划(17A130002)

摘　　要：孔网钢带复合热力管是一种集合了钢管和塑料管优点的新型复合管道。工程中大口径的孔网钢管采用螺旋焊接,文中应用有限元方法对这种螺旋焊孔网钢带复合管的环向强度进行了计算分析,得到了复合管在不同温度下的爆破压力,研究了影响复合管爆破压力的温度效应,并给出爆破压力的温度折减系数。最后提出螺旋焊孔网钢带复合热力管爆破压力的估算模型,在考虑1.2倍的安全裕度时,估算模型对于复合管爆破压力的预测精度可以得到保证。Mesh steel polyethylene com posite pipe is a new type com posite pipe w hich com bines the advantages of steel pipe and polyethylene pipe.In engineering,spiral w elded m ethod is usually applied to m anufacture la rg e-c a lib e r m eshsteel pipe.Based on finite elem ent analysis,the hoop tensile strength of the spiral w elded m esh steel polyethylene composite pipe is investigated in this study.T he burst pressure of com posite pipe under different tem perature isobtained,and the effect of tem perature on the burst pressure is analyzed.Tem perature reduction factor is given.F inally,a m odel to estim ation the burst pressure of the com posite pipe is presented,which has enough prediction accuracy when safety factor of1.2is considered.

关 键 词：复合管 温度效应 爆破压力 有限元计算 模型 

分 类 号：TU833.12[建筑科学—供热、供燃气、通风及空调工程]