【作者】 郑津洋； 卢玉斌； 李翔； 林秀锋； 朱彦聪； 徐平； 孙国有； 董华章； 陈德福； 邵泰清；

【Author】 ZHENG Jin - yang LU Yu - bin LI Xiang LIN Xiu - feng ZHU Yan - cong XU Ping SUN Guo - you, DONG Hua - zhang, CHEN De - fu SHAO Tai - qing (Institute of Chemical Machinery and Process Equipment, Zhejiang University, Hangzhou 310027, China;Department of Mechanics, Zhejiang University, Hangzhou 310027, China; Wenzhou Huangsheng Pipe Industrial CO. , Ltd, Wenzhou 325011, China)

【机构】 浙江大学 化工机械研究所； 浙江大学 力学系； 温州煌盛管业有限公司；

【摘要】 钢丝缠绕增强塑料复合管是一种性能优良的新型钢塑复合管,本文对其短期爆破压力、应变、临界失稳压力和不同温度下的失效形式等进行了系统的试验研究。结果表明,与相同规格尺寸的PE管相比,其短期爆破压力、环向刚度和临界失稳压力分别提高了129％、19％和57％;在内压作用下这种复合管有韧性破坏和过度变形两种失效模式,温度低于45℃时为韧性破坏,温度高于 45℃时为过度变形;在相同压力下仅受径向内压作用时这种复合管的径向膨胀率明显高于径向轴向同时受力时的径向膨胀率。更多还原

【Abstract】 Polythene (PE) pipe reinforced by cross -winding steel wire (PSP) is a new type of plastic -matrix steel composite pipes, which has excellent performance. Its short -time burst pressure, strain, critical buckling pressure and failure mode under various temperatures were investigated. Experimental results show that PSP has an increase of short - time burst pressure at room temperature up to 129% , ring stiffness up to 19% , and critical buckling pressure up to 57% in comparison with comparable PE pipe. Failure modes of PSP subjected to internal pressure under various temperatures are found to be ductile burst and excessive deformation, and their transition temperature is about 45℃. Moreover, at the same pressure, radial expansion rate of PSP only borne radial force is much larger than that of PSP borne both radial and axial force.更多还原