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Study on Shearing Properties and Behavior of the Grout-reinforced Underground with ERP Pipes  

최용기 (대원토질(주))
박종호 (대원토질(주))
권오엽 (건국대학교 토목공학과)
이상덕 (아주대학교 토목공학과)
Publication Information
Journal of the Korean Geotechnical Society / v.18, no.5, 2002 , pp. 73-81 More about this Journal
Abstract
Nowadays , the grouted-reinforcing method, which is called FRP(Fiberglass-reinforced-plastic) pipe .reinforcing method, has been introduced in the community of pound reinforcements. The resistance to corrosion and chemical attack high strength to weight ratio, and ease of handling make these pipes a better alternative to steels in tunnel. However, to fully utilize FRP pipes as grouted reinforcing members at the face and the crown in tunnel, their mechanical properties and behaviors and the grout-reinforced underground have to be verified. Laboratory shear tests were conducted to evaluate the mechanical properties for FRP pipes, the grout-reinforced members and the grout-reinforced body of FRP pipes. According to the test results, it was observed that FRP pipes play a dominant role in shearing behavior of the grout-reinforced members and that their shearing resistance exerts after the shearing displacement increases to some extent.
Keywords
Fiber-reinforced members(FRP); Shearing strength of FRP pipe; Grout-reinforced composites;
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