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原文传递 Numerical Study of Restrained Joint and Pulling Load for Ductile Iron Pipe in Horizontal Directional Drilling

题名：	Numerical Study of Restrained Joint and Pulling Load for Ductile Iron Pipe in Horizontal Directional Drilling
正文语种：	中文
作者：	Dong Yan Zhang Ma
作者单位：	of Engineering, China University of Geosciences-Wuhan, No.388 Lumo Road, Wuhan, Hubei Province, China
关键词：	Horizontal directional drilling Ductile iron pipe Failure mechanism FEM analysis Pulling force estimation
摘要：	As an alternative pipe material,Ductile Iron Pipe (DIP) has been more and more widely used in Horizontal Directional Drilling (HDD) for its excellent mechanical performance and corrosion resistance.The limited capacity of restrained joints to withstand pulling force severely constrains its application in long-distance crossing projects.The Finite-Element Method (FEM) was employed to study the failure mechanism of restrained joints as well as the impact of slope angle,based upon which an approximate solution was developed to calculate the maximum pull capacity of restrained joints.It was shown that the joint failure started from the spigot and an appropriate increase of slope angle could improve the joint's maximum pull capacity.Considering the pipe angular deflection,a new pull back load estimation model was established and its accuracy was verified by a HDD river crossing project.
会议日期：	20181024
会议举办地点：	武汉
会议名称：	第九届管道工程与非开挖技术国际研讨会
出版日期：	2018-10-24
母体文献：	第九届管道工程与非开挖技术国际研讨会论文集