CN205276129U

CN205276129U - Fibre reinforced composite - bamboo combination decking

Info

Publication number: CN205276129U
Application number: CN201521045192.4U
Authority: CN
Inventors: 钟志鹏; 刘宏; 闫仙丽; 何郁波
Original assignee: Shanxi University
Current assignee: Shanxi University
Priority date: 2015-12-16
Filing date: 2015-12-16
Publication date: 2016-06-01
Anticipated expiration: 2025-12-16

Abstract

The utility model relates to a fibre reinforced composite structure field during mainly used bridge or building structure bear, specifically is a fibre reinforced composite - bamboo combination decking, including fiber reinforcement pultrusion type tubular product, the bamboo panel twines fibre cloth and steel connecting rod four bibliographic categories branch outward. Pultrusion tubular product and the combination of bamboo panel bonding twine formation FRP - bamboo combination tubular product with them outward through fibre cloth, and rethread steel connecting rod is organized FRP - bamboo combination tubular product to assemble side by side with bolt connection and is constituted wholly, through the wholeness ability of binder connection in order to improve the decking between tubular product. Compare with current combined material decking, addition bamboo panel on the FRP pultrusion tubular product has improved the top panel cross -section inertia couple of former FRP tubular product and the area that shears by a wide margin to the rigidity of decking, the cost is reduced have effectively been improved. It is too big that the local amount of deflection of the top surface board that directly bears has been solved effectively to this combination decking, the problem of easy die -cut destruction, and surfacing nature is good, is favorable to bridge deck pavement.

Description

A kind of fibre reinforced composites-bamboo combined bridge deck

Technical field

This utility model relates to fiber-reinforced composite materials structures field, is mainly used in bridge or building structure carrying, is specially a kind of fibre reinforced composites-bamboo combined bridge deck.

Background technology

The corrosion of steel bridge or concrete slab is always up bigger problem, not only affects the normal use of structure, also results in severe safety accident. The deck system being made up of fibre reinforced materials (FRP) is a kind of new deck system researched and developed in recent years, solves the etching problem of floorings well. Comparing with conventional concrete floor system, composite floor system has from advantages such as heavy and light, intensity height, resisting fatigue, anti-chemical mediator burn into easy constructions. Adopt the bridge of this bridge floor form, in use do not need special anti-corrosion treatment, decrease maintenance cost, thus in science of bridge building, obtain increasingly extensive use. In order to save material, reducing production cost, in these floorings, current FRP pultrusion tubing cross section adopts the thin-wall construction form of rectangle, triangle, the geometry such as trapezoidal. Owing to the shearing strength of pultrusion tubing and the bullet mould in horizontal fibers direction are low, under load action, thin wall cavity local deformation is obvious, and punching failure easily occurs top panel. In order to avoid FRP floorings partial failure, being solved by two kinds of methods at present, the first is to add modulus and the high carbon fiber laying of intensity in laminate; The second is to increase member height and section thickness, improves cross sectional moment of inertia and the shearing strength of component.

Current carbon fiber price is more than 20 times of glass fibre, adds carbon fiber laying, will cause that floorings production cost increases, be unfavorable in engineering and use, reduce competitiveness in laminate; In addition the bullet mould of carbon fiber, the material parameter such as thermal coefficient of expansion is very big with glass fibre difference, it is easy to produces inter-laminar stress and concentrates, the destruction that will cause that floorings are new. Though can improve stiffness of structural member and bearing capacity by increasing member height and section thickness, but adding the material usage of glass fibre, cost is greatly improved, and limits composite at floorings engineer applied. Accordingly, it is considered to loading characteristic under FRP floorings wheel load and economy, employing FRP is combined with traditional material bamboo wood, to develop lightweight, high-strength, safe, economic new type FRP combined bridge deck.

Summary of the invention

For overcoming prior art not enough, this utility model is to provide a kind of fibre reinforced composites-bamboo combined bridge deck, significantly improves the local stiffness of FRP floorings and the shear-carrying capacity of top panel, has lightweight, high-strength, economic and safe feature.

This utility model adopts the following technical scheme that realization: a kind of fibre reinforced composites-bamboo combined bridge deck, including some FRP pultrusion tubing, the top panel of each FRP pultrusion tubing is fixed with bamboo panel, it is wound with fiber outside FRP pultrusion tubing and bamboo panel and forms fibrous layer, FRP pultrusion tubing, bamboo panel and fibrous layer form a floorings unit, and each floorings unit is fastenedly connected formation floorings by connecting rod after being sequentially connected in series.

A kind of fibre reinforced composites-bamboo combined bridge deck, including some FRP pultrusion tubing, each FRP pultrusion tubing connects formation floorings elementary cell by steel connecting rod after being sequentially connected in series, the top panel of floorings elementary cell is fixed with bamboo panel, it is wound with fiber outside floorings elementary cell and bamboo panel and forms fibrous layer, ultimately forming floorings.

Above-mentioned a kind of fibre reinforced composites-bamboo combined bridge deck, described FRP pultrusion tubing is passed through pultrude process one-shot forming by glass fibre and epoxy resin or vinylite.

Above-mentioned a kind of fibre reinforced composites-bamboo combined bridge deck, described FRP pultrusion tubing cross section is thin-wall construction, adopts triangle, tetragon or hexagon to remain silent section form.

Above-mentioned a kind of fibre reinforced composites-bamboo combined bridge deck, bamboo panel is the one in bamboo wood laminate or bamboo plywood, makes by rolling.

Above-mentioned a kind of fibre reinforced composites-bamboo combined bridge deck, outer entanglement fiber is glass fibre, carbon fiber or basalt fibre.

Compared with prior art, this utility model has the advantage, that

(1) bamboo panel is placed on FRP pultrusion tubing top board, former component top board the moment of inertia and section thickness have been significantly increased, thus being effectively increased top board rigidity and the shear resistent area of FRP pultrusion tubing, revolutionize floorings local stiffness and the disadvantageous situation of intensity;

(2) bamboo wood has the higher ratio of strength to weight, elastic preferably, bamboo wood is wrapped in FRP pultrusion tubing to improve former bamboo wood mechanical property is discrete and fragility the FRP pultrusion pipe performance of tensile region is given full play to, and not perishable, combined bridge deck has good corrosion resistance;

(3) bamboo renewable is strong, and material enriches, energy-conserving and environment-protective, and sheet metal thickness and width can designed, designed as required, easy to process;

(4) combined bridge deck is lightweight, easy transportation and installation, and cheap, economical and practical.

Accompanying drawing explanation

Fig. 1 is floorings unit schematic cross-section of the present utility model.

Fig. 2 is the schematic cross-section of embodiment one.

Fig. 3 is the schematic cross-section of embodiment two.

In figure: 1-FRP pultrusion tubing, 2-bamboo panel, 3-fibrous layer, 4-connecting rod.

Detailed description of the invention

In conjunction with accompanying drawing, utility model works principle and concrete technical scheme are described in detail:

Embodiment 1: as shown in Figure 1, 2, a kind of fibre reinforced composites-bamboo combined bridge deck, including some FRP pultrusion tubing 1, bamboo panel 2, fibrous layer 3 and steel connecting rod 4, as shown in Figure 2. By the polishing alligatoring of the FRP pultrusion tubing 1 top panel end face of pultrusion, by same with the adhesive surface of top panel for bamboo panel 2 coarse process, sticked on FRP pultrusion tubing 1 top panel by binding agent. Wherein bamboo panel 2 cross section is square-section, end face two corner arc transition, and bamboo panel 2 thickness is uniform, and according to Bridge Design load, FRP pultrusion tubing 1 physical dimension, pave-load layer thickness determines its thickness. Then passing through the fiber 3 being sufficiently impregnated with in resin and be entangled in FRP pultrusion tubing and the combination pipe outer surface of bamboo panel 2 bonding outside 45 ��-90 ��, being wound around the number of turns is 4-5 circle. Outer entanglement fiber layer 3 mainly adopts glass fibre, is actually needed the high-performance fiber that can also adopt other, such as basalt fibre, carbon fiber etc. Then punching on combination tubing web, as described in Figure 1, combine at FRP and smear the binding agent such as epoxy resin or vinylite between tubing, high strength carbon steel or stainless steel or anticorrosion alloy steel are made the steel connecting rod 4 tubing through punching, and tighten with bolt, make each tubing composition common stress of floorings. In order to strengthen overall performance further, at bamboo FRP interface, FRP FRP smears binding agent in interface, and binding agent can be epoxy resin or vinylite.

Embodiment 2: as it is shown on figure 3, for the overall performance strengthening FRP-bamboo combined bridge deck, it is also possible to fibre reinforced composites pultrusion tubing 1 is arranged side by side, sticks together with binding agent; By bamboo panel 2 and the polishing alligatoring of FRP pultrusion tubing 1 combination interface, stick on FRP pultrusion tubing top panel by binding agent, bamboo panel 2 end face two corner arc transition. Then outer entanglement fiber layer 3, and it is mechanically connected the unified floorings of composition by high-strength steel connecting rod 4.

Claims

1. fibre reinforced composites-bamboo combined bridge deck, it is characterized in that including some FRP pultrusion tubing (1), the top panel of each FRP pultrusion tubing (1) is fixed with bamboo panel (2), being wound with fiber outside FRP pultrusion tubing and bamboo panel and form fibrous layer (3), connecting rod (4) passes sequentially through the combination tubing web of the FRP pultrusion after series connection and connects formation floorings.

2. fibre reinforced composites-bamboo combined bridge deck, it is characterized in that including some FRP pultrusion tubing (1), each FRP pultrusion tubing (1) connects formation floorings elementary cell by connecting rod (4) after being sequentially connected in series, the top panel of floorings elementary cell is fixed with bamboo panel (2), it is wound with fiber outside floorings elementary cell and bamboo panel and forms fibrous layer (3), ultimately forming floorings.

3. a kind of fibre reinforced composites-bamboo combined bridge deck according to claim 1 and 2, it is characterised in that described FRP pultrusion tubing (1) is passed through pultrude process one-shot forming by glass fibre and epoxy resin or vinylite.

4. a kind of fibre reinforced composites-bamboo combined bridge deck according to claim 1 and 2, it is characterised in that described FRP pultrusion tubing (1) cross section is thin-wall construction, adopts triangle, tetragon or hexagon to remain silent section form.

5. a kind of fibre reinforced composites-bamboo combined bridge deck according to claim 1 and 2, it is characterised in that bamboo panel (2) is the one in bamboo wood laminate or bamboo plywood, makes by rolling.

6. a kind of fibre reinforced composites-bamboo combined bridge deck according to claim 1 and 2, it is characterised in that outer entanglement fiber is glass fibre, carbon fiber or basalt fibre.