CN203320394U - H-shaped FRP (fiber reinforced plastic)-concrete composite beam - Google Patents

H-shaped FRP (fiber reinforced plastic)-concrete composite beam Download PDF

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Publication number
CN203320394U
CN203320394U CN2013202370841U CN201320237084U CN203320394U CN 203320394 U CN203320394 U CN 203320394U CN 2013202370841 U CN2013202370841 U CN 2013202370841U CN 201320237084 U CN201320237084 U CN 201320237084U CN 203320394 U CN203320394 U CN 203320394U
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China
Prior art keywords
frp
concrete
shaped
side plate
composite beam
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Expired - Fee Related
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CN2013202370841U
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Chinese (zh)
Inventor
刘玉擎
辛灏辉
张由由
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Tongji University
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Tongji University
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Abstract

The utility model relates to an H-shaped FRP-concrete composite beam which comprises an FRP component and a concrete component, wherein the FRP component comprises an FRP side plate and an FRP entity unit; the concrete component is a concrete entity unit; the FRP entity unit is located at the lower part of the composite beam and in an inverted T-shaped structure; the FRP side plate is located at the upper part of the composite beam and connected to the upper end of the FRP entity unit; a surrounding plate is filled with the concrete entity unit, so that the H-shaped composite beam is formed; the FRP entity unit is located below a neutral layer of the composite beam and taken as a tension element; and the concrete entity unit is used for filling above the neutral layer of the composite beam and serves as a compressed element. Compared with the prior art, the H-shaped FRP-concrete composite beam has the advantages as follows: the construction is convenient, the bearing capacity is good, the service life is long, and the like.

Description

A kind of I-shaped FRP-concrete combination beam
Technical field
The utility model relates to the bridge construction technical field, especially relates to a kind of I-shaped FRP-concrete combination beam.
Background technology
FRP is a kind of novel organic material, has from the advantage such as heavy and light, intensity be high, corrosion-resistant, has good mechanical property and durability, makes it when building composite beam bridge, can the cope with bad weather, the difficulty such as the duration is urgent.With respect to traditional building materials such as steel and concrete, its produce and building course to the consumption of the energy still less, the pollution of environment is less.The traditional materials such as FRP and steel or concrete are combined to form to combined member or structure applications in bridge construction, more can make different materials give full play to its advantage, thereby structure is optimized, obtain good economic benefit and social benefit.By FRP and steel or jointly form compound beam with concrete or with both, rationally used and will be had more feasibility.The FRP compound beam can effectively utilize material advantage separately.The FRP-concrete combination beam is compared with the conventional steel Concrete Beam Reinforced, has better overall durability, and can solve concrete-bridge due to formwork, stripping process and problem that can't rapid construction.
China to FRP correlative study start late, theory and experimental study are not comprehensively with deep, the key core problem is solved all the time well, but not yet form the knowwhy system of the operationalization of system, cause FRP to be subject to certain limitation in the application of combining structure beam bridge, can not give full play to its distinctive advantage aspect composite beam bridge design and construction.In order to accelerate to promote the application of FRP combining structure beam bridge in Bridges in Our Country is built, make it actively constantly for country, create economic and social benefit, to the design of FRP material and FRP composite beam bridge with carry out comprehensively the construction aspect, system and deep research, solve as early as possible the key core problem, hold correlation theories knowledge and rule and be very urgent and necessarily.
The utility model content
The purpose of this utility model is exactly to provide a kind of font FRP-concrete combination beam in order to overcome the defect that above-mentioned prior art exists.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of I-shaped FRP-concrete combination beam, this compound beam comprises FRP member and concrete component, described FRP member comprises FRP side plate and FRP solid element, described concrete component is the concrete solid unit, and described FRP solid element is positioned at the bottom of compound beam, is the inverted T-shaped structure, described FRP side plate is positioned at compound beam top, and be connected in the upper end of FRP solid element, described concrete solid unit is filled in described encirclement plate, form H-shaped combination beam; Wherein, described FRP solid element is positioned at below the neutral line of compound beam, as the tension element, more than described concrete solid unit is filled in the neutral line of compound beam, as pressure parts.
Described FRP side plate and FRP solid element are prefabricated units, at the disposable pultrusion of factory.
Described FRP member also comprises the FRP connector, and this FRP connector is arranged on the FRP side plate at place, H-shaped combination beam top flange, connects FRP side plate and concrete solid unit.
Offer through hole on described FRP connector, be equipped with reinforcing rib in through hole.
Described reinforcing rib is FRP muscle, reinforcing bar or bamboo.
Described through hole is circle, ellipse, hyperelliptic shape or rectangle.
That described FRP connector is is "T"-shaped, " U " shape, " L " shape or " I " shape.
Compared with prior art, the utlity model has following advantage:
1, the formed encirclement plate of FRP side plate can be used as permanent formwork and uses, and can realize that quick, safety, lightness construct, and easily guarantees construction quality, and can effectively reduce the impact on peripheral traffic.
2, the FRP solid element replaces the reinforcing bar of tensile region, plays the effect of protection concrete, and avoids the inside corrosion of steel bar problem caused by the bottom concrete cracking.
3, the FRP material replaces presstressed reinforcing steel, increases the bridge construction convenience, has improved the mechanical property of composite bridge.
4, take effective connected mode that FRP side plate and concrete are carried out to combination, the compound beam obtained has higher supporting capacity.
5,, compared with full FRP bridge, its axle vibraqtions performance has raising preferably.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
The schematic diagram that Fig. 2 is FRP member in the utility model;
The schematic diagram that Fig. 3 is concrete component in the utility model.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
As shown in Figures 1 to 3, a kind of I-shaped FRP-concrete combination beam, this compound beam comprises FRP member and concrete component, described FRP member comprise FRP side plate 1, FRP solid element 2 and FRP connector 3, concrete component is concrete solid unit 4.
Described FRP solid element 2 is positioned at the bottom of compound beam, is the inverted T-shaped structure, and described FRP side plate 1 is positioned at compound beam top, and form the encirclement plate of T shape, be connected in the upper end of FRP solid element 2, described concrete solid unit is filled in described encirclement plate, forms H-shaped combination beam.Wherein, FRP side plate 1 and FRP solid element 2 are prefabricated units, at the disposable pultrusion of factory, FRP solid element 2 is filled in below the neutral line A of compound beam, as the tension element, for bearing tensile stress, more than concrete solid unit 4 is filled in the neutral line A of compound beam, as pressure parts, for bearing compressive stress.
The FRP connector is arranged on the FRP side plate 1 at place, H-shaped combination beam top flange, for connecting FRP side plate 1 and concrete solid unit 4, can adopt the structure of "T"-shaped, " U " shape, " L " shape or " I " shape, adopt in the present embodiment "T"-shaped structure.In order to strengthen bonding strength, offer through hole on FRP connector 3, be equipped with reinforcing rib in through hole, wherein, reinforcing rib is FRP muscle, reinforcing bar or bamboo, through hole is circle, ellipse, hyperelliptic shape or rectangle.
The utility model adopts the formed encirclement plate of FRP side plate to can be used as permanent formwork and uses, and can realize that quick, safety, lightness construct, and easily guarantees construction quality, and can effectively reduce the impact on peripheral traffic.The FRP solid element replaces the reinforcing bar of tensile region, can reduce the thickness of concrete cover of bridge deck bottom, plays the effect of protection concrete, and avoids the inside corrosion of steel bar problem caused by the bottom concrete cracking.The FRP material replaces stress rib, increases the bridge construction convenience, has improved the mechanical property of composite bridge.Take effective connected mode that FRP side plate and concrete are carried out to combination, the compound beam obtained has higher supporting capacity.
The above-mentioned description to embodiment is can understand and apply the utility model for ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these embodiment, and General Principle described herein is applied in other embodiment and needn't passes through performing creative labour.Therefore, the utility model is not limited to the embodiment here, and those skilled in the art are according to announcement of the present utility model, and the improvement of making for the utility model and modification all should be within protection domains of the present utility model.

Claims (7)

1. an I-shaped FRP-concrete combination beam, this compound beam comprises FRP member and concrete component, it is characterized in that, described FRP member comprises FRP side plate and FRP solid element, described concrete component is the concrete solid unit, described FRP solid element is positioned at the bottom of compound beam, be the inverted T-shaped structure, described FRP side plate is positioned at compound beam top, and form the encirclement plate of T shape, be connected in the upper end of FRP solid element, described concrete solid unit is filled in described encirclement plate, forms H-shaped combination beam; Wherein, described FRP solid element is positioned at below the neutral line of compound beam, as the tension element, more than described concrete solid unit is filled in the neutral line of compound beam, as pressure parts.
2. a kind of I-shaped FRP-concrete combination beam according to claim 1, is characterized in that, described FRP side plate and FRP solid element are prefabricated units, disposable pultrusion.
3. a kind of I-shaped FRP-concrete combination beam according to claim 1, it is characterized in that, described FRP member also comprises the FRP connector, and this FRP connector is arranged on the FRP side plate at place, H-shaped combination beam top flange, connects FRP side plate and concrete solid unit.
4. a kind of I-shaped FRP-concrete combination beam according to claim 2, is characterized in that, on described FRP connector, offers through hole, is equipped with reinforcing rib in through hole.
5. a kind of I-shaped FRP-concrete combination beam according to claim 3, is characterized in that, described reinforcing rib is FRP muscle, reinforcing bar or bamboo.
6. a kind of I-shaped FRP-concrete combination beam according to claim 3, is characterized in that, described through hole is circle, ellipse, hyperelliptic shape or rectangle.
7. a kind of I-shaped FRP-concrete combination beam according to claim 2, is characterized in that, that described FRP connector is is "T"-shaped, " U " shape, " L " shape or " I " shape.
CN2013202370841U 2013-05-03 2013-05-03 H-shaped FRP (fiber reinforced plastic)-concrete composite beam Expired - Fee Related CN203320394U (en)

Priority Applications (1)

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CN2013202370841U CN203320394U (en) 2013-05-03 2013-05-03 H-shaped FRP (fiber reinforced plastic)-concrete composite beam

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Application Number Priority Date Filing Date Title
CN2013202370841U CN203320394U (en) 2013-05-03 2013-05-03 H-shaped FRP (fiber reinforced plastic)-concrete composite beam

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CN203320394U true CN203320394U (en) 2013-12-04

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2701779A1 (en) * 2018-09-10 2019-02-25 Univ Valencia Politecnica Segment of polymeric profile, hybrid structure and manufacturing method. (Machine-translation by Google Translate, not legally binding)
CN113389128A (en) * 2021-04-16 2021-09-14 北京林业大学 Novel FRP (fiber reinforced Plastic) -integrated bamboo composite beam structure considering interface sliding effect and manufacturing method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2701779A1 (en) * 2018-09-10 2019-02-25 Univ Valencia Politecnica Segment of polymeric profile, hybrid structure and manufacturing method. (Machine-translation by Google Translate, not legally binding)
WO2020053460A1 (en) * 2018-09-10 2020-03-19 Universitat Politècnica De València Polymeric profile segment, hybrid structure and method for manufacturing same
CN113389128A (en) * 2021-04-16 2021-09-14 北京林业大学 Novel FRP (fiber reinforced Plastic) -integrated bamboo composite beam structure considering interface sliding effect and manufacturing method thereof

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CF01 Termination of patent right due to non-payment of annual fee