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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 the requirements of repairing the pipe with large diameter and the strength and thickness of the tubular non-woven fabric composite, the structure of the tubular non-woven fabric composite was designed. Reinforced by strengthening the non-woven fabric its strength; reinforced non-woven fabric design blocks in 2 and more than 2, the formation of tubular non-woven fabric composite material disposed in the circumferential joint equidistant structure, this more The seamed tubular nonwoven fabric is symmetrical in structure and avoids stress concentration at the single seams when lifted to prevent cracking at the seams; on each side of the reinforced nonwoven fabric, both sides are reserved The suture area reduces the difficulty of suturing, increases the suturing efficiency, and reduces the thickness of the sutures, making the seam at the film easier to weld, ensuring the tightness of the entire tubular nonwoven composite. Finally, the rationality of structure design is verified through experiments.