FRP rib concrete pipe sheet with embedded steel bars

A technology of concrete and concrete layer, which is applied in earth-moving drilling, wellbore lining, tunnel lining, etc., can solve the problems of brittle failure, large deformation, low elastic modulus, etc., and achieve the effect of good ductility

Inactive Publication Date: 2017-06-09
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, FRP still has the problems of low elastic modu

Method used

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  • FRP rib concrete pipe sheet with embedded steel bars
  • FRP rib concrete pipe sheet with embedded steel bars
  • FRP rib concrete pipe sheet with embedded steel bars

Examples

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Example Embodiment

[0016] The technical solution of the present invention will be described in detail below with reference to the drawings and embodiments.

[0017] Such as figure 1 with figure 2 As shown, this example provides a segment of FRP ribs with embedded steel bars. The structure is composed of FRP bars with embedded bars and a cast-in-situ concrete layer 1. The FRP bars are arranged in the cast-in-situ concrete layer 1. The FRP reinforcement net with embedded steel bars is composed of FRP force bars 3 with embedded steel bars, FRP distribution bars 4 with embedded steel bars, FRP waist bars 5 with embedded steel bars, and FRP stirrups 2, consisting of components 2, 3, 4 and 5 are connected by lashing. Such as image 3 As shown, the FRP bars with embedded steel bars are composed of steel bars 6, FRP layers 7 and sticky sand 8.

[0018] The steel bars 6 impregnated with epoxy resin and fiber bundles are fed into a pultrusion die in a certain proportion, and then the surface is wound with f...

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Abstract

The present invention discloses a FRP reinforced concrete tube tablet with embedded reinforced steel. The concrete tube is made of FRP tendon mesh and poured concrete with embedded reinforced steel;In the concrete; the FRP tendon mesh is bundled by the FRP stress tendon of the embedded reinforced steel, the FRP distribution tendon of the embedded steel bars, the FRP waist tendon and the FRP stirrule of the embedded steel bars;And tied into FRP tendons with embedded reinforced bars for concrete tubes, which can comprehensively use the advantages of FRP and reinforced bars to fundamentally solve the problem of rust and durability in the pipes.Low, deformation and crispy destruction mechanics characteristics.Preparation of FRP reinforced concrete tubes that take into account lightweight, high -strength, high elastic modulus, high latency, high cost performance and corrosion resistance.The pipes are suitable for tunnel engineering with high requirements for mechanical performance and corrosion resistance, and have a wide range of application prospects.

Description

technical field [0001] The invention belongs to the research and development of composite materials and new structures in the fields of civil engineering, transportation, water conservancy, etc., and specifically relates to an FRP reinforced concrete segment embedded with steel bars for tunnel engineering. It is characterized by high strength, high ductility, high modulus of elasticity, high cost performance and excellent corrosion resistance. Background technique [0002] Reinforced concrete segment is the most commonly used support structure in shield tunneling engineering, and the steel bar has the advantages of high elastic modulus and good ductility. As the secondary lining of the tunnel engineering, the segment needs to have good durability. Due to the enrichment of groundwater and the harsh environment in tunnel engineering, steel bars are prone to corrosion and poor durability. [0003] Fiber-reinforced plastic (FRP) consists of two parts: continuous fiber bundles ...

Claims

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Application Information

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IPC IPC(8): E21D11/08
CPCE21D11/083
Inventor 马国伟李鹏飞李之建
Owner BEIJING UNIV OF TECH
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