玻璃纤维增强塑料夹砂管的环刚度分析

RING STIFFNESS ANALYSIS OF GLASS FIBER REINFORCED PLASTICS MORTAR PIPE

通过对玻璃纤维增强塑料夹砂管的环刚度、管刚度、刚度等级概念进行分析,明确了环刚度的内涵是管道在外载作用下抵抗变形的一种能力,管刚度与环刚度并不是同一个概念,而刚度等级是管材初始特定环刚度的级别。由环刚度的相关概念分析了环刚度设计与测试的基本方法,并根据设计规范的要求对实际工程中所需要的刚度等级从变形和稳定性两个方面进行了分析,得到了确定刚度等级的基本原则和方法及其与埋设条件之间的关系。对正确理解玻璃纤维增强塑料夹砂管的环刚度以及环刚度的设计、测试及选择都具有一定的参考意义。

The concepts of ring stiffness, pipe stiffness and nominal stiffness of the glass fiber reinforced plas- tics mortar pipe are analyzed. Ring stiffness is a kind of ability of pipe ring under the action of the external load re- sistance to deformation. Pipe stiffness and ring stiffness is not the same concept, and nominal stiffness is the initial specific ring stiffness level. The basic method of design and test of ring stiffness is analyzed, and according to the design requirements of nominal stiffness required in practical engineering are analyzed from two aspects of deflection and buckling. The basic principles and methods of determine nominal stiffness and the relationship between ring stiffness and embedment conditions are obtained. It has reference significance to correctly understand ring stiffness of glass fiber reinforced plastics mortar pipe and ring stiffness design, test and selection.