Section steel embedded type FRP (Fiber Reinforce Plastic) sectional material arch supporting structure
A supporting structure and section steel technology, which is applied in shaft lining, tunnel lining, underground chamber, etc., can solve the problems of brittle failure, poor durability, and low elastic modulus of FRP, and achieve good ductility
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[0017] The I-shaped steel belongs to a type of section steel. The technical solution of the present invention will be described in detail below with reference to the drawings and embodiments.
[0018] Such as figure 1 with figure 2 As shown, the present invention provides an FRP profile arch support structure with embedded I-shaped steel. The FRP profile arch support structure with embedded I-shaped steel is welded by the FRP profile arch with embedded I-shaped steel and the longitudinal steel bars 3 Become. The FRP profile arch is formed by connecting several FRP arc-shaped members 1 through a connecting plate 2. The FRP arc-shaped member 1 includes an I-shaped steel 6, an FRP layer 7 fastened to the outer surface of the I-shaped steel 6, and an FRP layer. On the sand 4.
[0019] The I-shaped steel 6 impregnated with epoxy resin and the fiber bundle impregnated with epoxy resin are fed into the pultrusion die together, and the volume ratio of the fiber bundle to the epoxy resin...
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