摘要
基于修复大管径管道对管状非织造布复合材料强度与厚度的要求,对管状非织造布复合材料的结构进行了设计。通过在非织造布中加筋增强了其强度;加筋非织造布设计块数在2块和2块以上,形成管状非织造布复合材料在周向接缝等距离设置的结构,这种多接缝的管状非织造布复合材料结构对称,在翻衬时避免单个接缝应力集中现象,从而防止了在接缝处出现开裂;在每块加筋非织造布覆膜时,两侧预留缝合区域,减少了缝合难度,增加了缝合效率,而且降低了缝合处的厚度,使得接缝处更容易膜焊接,保证了整个管状非织造布复合材料的密封性。最后通过实验验证了结构设计的合理性。
Based on requirement of intensity and thickness for the tubular nonwoven composite material by the big pipeline rehabilitation,the structure of the tubular nonwoven composite material was designed.To add fabric to reinforce the tubular nonwoven composite material,two pieces or more of the reinforced nonwoven were designed,forming a structure of the tubular nonwoven composite material with equidistant seams in the circumferential direction.This structure of the tubular nonwoven composite material with many seams is symmetric,during inversion,the concentration of the stress of the single seam can be avoided,so the cracking of the seam is prevented;when the reinforced nonwoven is coverd with film,the areas at its two sides for sewing were obligated,the difficulty of the sewing is decreased,the efficiency of the sewing is increased,and the thickness of the seam is decreased;the film jointing of the seam becomes much easier,the airproof of the tubular nonwoven composite material being guaranteed.At last through the test,the rationality of the structure design was tested.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2009年第5期173-177,共5页
Acta Materiae Compositae Sinica
基金
天津市应用基础及前沿技术研究计划(08JCYBJC11400)
关键词
管道修复
管状非织造布复合材料
结构
设计
pipeline rehabilitation
tubular nonwoven composite material
structure
design
