CN204081257U - FRP muscle fiber high-strength concrete beam component - Google Patents

Abstract

The utility model relates to FRP muscle fiber high-strength concrete beam component, comprises fiber high-strength concrete and is cast in interior FRP muscles and bones frame: described beam shape of cross section has Filled Rectangle, hollow rectangle, T-shaped or box-shaped; To rectangle and hollow rectangle cross section, described FRP muscles and bones frame founds FRP muscle by longitudinal tensile FRP muscle, FRP muscle stirrup and longitudinal frame and forms, and longitudinal tensile FRP muscle and frame found FRP muscle and to depend on inside FRP stirrup and with it together with colligation; To T section and box section, described FRP muscles and bones frame is found FRP muscle, soffit of girder distribution FRP muscle and the stressed FRP muscle of top board formed by longitudinal tensile FRP muscle, FRP stirrup, frame, longitudinal tensile FRP muscle depends on the inner side of FRP stirrup, distribution FRP muscle depends on the inner side of FRP muscle stirrup, frame stands the inner side that FRP muscle depends on the stressed FRP muscle of top board, and top board stressed FRP muscle is connected to form effective connection with FRP stirrup.

Description

FRP muscle fiber high-strength concrete beam component

Technical field

The utility model relates to FRP muscle fiber high-strength concrete beam component, belongs to building, bridge and port works field.

Background technology

At building, the widely used normal reinforced concrete beam of bridge and port works field, there is following defect at present: ordinary concrete crack resistance is poor, can only use non-high tensile reinforcement, limits the use of high tensile reinforcement; Because the intensity of concrete and reinforcing bar is all lower, the method that only steel bar stress is joined in reliable increase beam section size and increasing improves its bearing capacity, not only cause the significant losses of material, increase building costs and difficulty of construction, and heavy in section heavy compression can utilize space; Concrete material tensile strength is low, concrete in tension zone has ftractureed under far below service load effect and has occurred with wider major fracture form, and excessive crack not only causes the rigidity of beam to reduce, amount of deflection increases, affect the normal use of structure, cause unsafe psychological impact to people, and be difficult to be applied to longspan structure.For the reinforced concrete structure be under adverse circumstances, corrosion can occur, structural bearing capacity is declined under the erosion of inner reinforcing bar portion's impedance dielectric outside, durability reduces, and application life shortens.There is data to show, be in the reinforced concrete structure of coastal area, namely produce serious corrosion of steel bar about the Two decades years that comes into operation and destroy.For the Structural Engineering field that demand fulfillment non-(low) conduction and the specific function such as non-electromagnetism require, if use reinforcing bar, just require very complicated design with guarantee every root reinforcing bar all with the reinforcing steel bar insulating of surrounding, this is difficult to realization.

Start the high tensile reinforcement be applied in Practical Project and strengthened high-strength concrete beam, taken full advantage of the high powerful feature of high tensile reinforcement and high-strength concrete, the supporting capacity of beam can be increased substantially, reduce sectional dimension and material consumption.But along with the raising of concrete strength, fragility increases gradually, and component ductility reduces gradually, totally unfavorable to structural seismic etc., and corrosion of steel bar problem still exists.

FRP muscle has the advantages such as lightweight, high-strength, antifatigue, corrosion-resistant, anti-electromagnetism, FRP muscle partly or entirely replaces reinforcing bar to be used for Concrete Structure beam by Chinese scholars and technician, to solve the corrosion problem of reinforcing bar, and the isostructural Special use requirement of electromagnetism interference can be met.Result of study shows, although FRP muscle strengthens normal concrete beams can effectively solve corrosion of steel bar problem, but because ordinary concrete crack resistance is poor, tensile strength is low, and FRP muscle to have modulus of elasticity low, stress-strain relation is the characteristics such as linear elasticity, cause FRP Concrete Beam Reinforced structure member crevices wide, amount of deflection is excessive, have a strong impact on the normal usage function of beam, simultaneously, utilize the characteristic property such as the electric insulation of FRP muscle and easy electromagnetic wave thoroughly, adopt FRP tendon concrete structure, effectively can solve the electromagnetic interference predicament of reinforced concrete structure, responsive military equipment test facilities are now widely used in, in the electromagnetism interference buildings such as the magnetic resonance imaging facility of medical department.

High-strength concrete is realized by the appropriate active admixture of admixture and efficient additive, and have higher compressive strength, modulus of elasticity and endurance quality preferably, but fragility is comparatively large, the ductility of high-strength concrete component is poor.The short fibers such as the steel fibre that admixture is appropriate in high-strength concrete, polypropylene fibre, can increase substantially concrete tension, shearing resistance, rupture strength and toughness, enlarge markedly the rigidity of structure and ductile performance.

Utility model content

The purpose of this utility model is the defect overcoming reinforced concrete beam and FRP Concrete Beam Reinforced, the FRP muscle of superior performance and fiber high-strength concrete bi-material is combined and forms FRP muscle fiber high-strength concrete beam.FRP muscle replaces reinforcing bar effectively can solve corrosion of steel bar problem in reinforced concrete beam, improves the durability of concrete component; Short fiber has significant enhancing, toughness reinforcing, action of crack arrest to high-strength concrete, less sectional dimension is utilized to bear larger load for component can be made in concrete beam, effective saving material, reduction dead load, and limit appearance and the development in crack, reduce crack width and height, increase bending rigidity, reduce component combined deflection, increase substantially the normal usage energy of concrete structure.And, because fiber is to effective improvement of high-strength concrete toughness, ductility and the anti-seismic performance of FRP Concrete Beam Reinforced can be significantly improved.

To achieve these goals, the utility model takes following technical scheme:

Described FRP muscle fiber high-strength concrete beam component, comprises fiber high-strength concrete and is cast in interior FRP muscles and bones frame: described beam shape of cross section has Filled Rectangle, hollow rectangle, T-shaped or box-shaped; To rectangle and hollow rectangle cross section, described FRP muscles and bones frame founds FRP muscle by longitudinal tensile FRP muscle, FRP muscle stirrup and longitudinal frame and forms, and longitudinal tensile FRP muscle and frame found FRP muscle and to depend on inside FRP stirrup and with it together with colligation; To T section and box section, described FRP muscles and bones frame is found FRP muscle, soffit of girder distribution FRP muscle and the stressed FRP muscle of top board formed by longitudinal tensile FRP muscle, FRP stirrup, frame, longitudinal tensile FRP muscle depends on the inner side of FRP stirrup, distribution FRP muscle depends on the inner side of FRP muscle stirrup, frame stands the inner side that FRP muscle depends on the stressed FRP muscle of top board, and top board stressed FRP muscle is connected to form effective connection with FRP stirrup.

Described FRP muscle comprises CFRP muscle, GFRP muscle, BFRP muscle, AFRP muscle;

Described fiber high-strength concrete be strength grade C50 and more than, and one or more concrete of the short fibers such as mixing of steel fiber, plastic-steel fabric, polypropylene fibre, polyacrylonitrile fibre, lignin fibre;

Described beam cross section is longitudinally uniform section or variable cross-section.

Making step of the present utility model is as follows:

Template is made according to beam size;

Colligation FRP muscles and bones frame;

Build fiber high-strength concrete, carry out maintenance afterwards.

FRP muscle fiber high-strength concrete beam mainly has the following advantages:

The material of FRP muscle and these two kinds of superior performances of fiber high-strength concrete is organically combined, give full play to FRP muscle and the high feature of fiber high-strength concrete strength, can greatly reduce sectional dimension of members, effectively save material, increase building and can utilize space, be conducive to the realization of large span, high-level structure;

The decay resistance of FRP muscle is conducive to improving the durability of concrete structure under adverse circumstances;

The non-conductive and non magnetic of FRP muscle is conducive to the specific function requirements such as the electromagnetism interference realizing building;

The adding of short fiber, to high-strength concrete, there is the resistance of stronger cracking resistance to split and toughening effect, the appearance in restriction crack and development, remarkable reduction crack width and height, increase bending rigidity, reduce the combined deflection under short-term deflection and continuing load effect, increase substantially the normal usage energy of concrete structure;

Make full use of the high-ductility characteristic of fibrous concrete, make structure have good ductility and anti-seismic performance;

FRP muscles and bones frame is lightweight, makes simple and convenient in carrying, can save labour, reduces construction cost, and is applicable to Prefabrication.

Accompanying drawing explanation

Describe exemplary embodiment of the present utility model in more detail by referring to accompanying drawing, above and other aspect of the present utility model and advantage will become and more be readily clear of, in the accompanying drawings:

Fig. 1 is rectangular solid cross section FRP muscle fiber high-strength concrete beam member cross-sections schematic diagram;

Fig. 2 is rectangular hollow section FRP muscle fiber high-strength concrete beam member cross-sections schematic diagram;

Fig. 3 is T section FRP muscle fiber high-strength concrete beam member cross-sections schematic diagram;

Fig. 4 is box section FRP muscle fiber high-strength concrete beam member cross-sections schematic diagram;

In figure: 1, longitudinal tensile FRP muscle, 2, fiber high-strength concrete, 3, FRP muscle stirrup, 4, frame founds FRP muscle, 5, distribution FRP muscle, 6, the stressed FRP muscle of top board.

Detailed description of the invention

Hereinafter, more fully the utility model is described with reference to the accompanying drawings, various embodiment shown in the drawings.But the utility model can be implemented in many different forms, and should not be interpreted as being confined to embodiment set forth herein.On the contrary, provide these embodiments to make the disclosure will be thoroughly with completely, and scope of the present utility model is conveyed to those skilled in the art fully.

Hereinafter, with reference to the accompanying drawings exemplary embodiment of the present utility model is described in more detail.

With reference to accompanying drawing 1-4, FRP muscle fiber high-strength concrete beam component, comprises fiber high-strength concrete and is cast in interior FRP muscles and bones frame: described beam shape of cross section has Filled Rectangle, hollow rectangle, T-shaped and box-shaped; To rectangle and hollow rectangle cross section, described FRP muscles and bones frame founds FRP muscle by longitudinal tensile FRP muscle, FRP muscle stirrup and longitudinal frame and forms, and longitudinal tensile FRP muscle and frame found FRP muscle and to depend on inside FRP stirrup and with it together with colligation; To T section and box section, described FRP muscles and bones frame is found FRP muscle, soffit of girder distribution FRP muscle and the stressed FRP muscle of top board formed by longitudinal tensile FRP muscle, FRP stirrup, frame, longitudinal tensile FRP muscle depends on the inner side of FRP stirrup, distribution FRP muscle depends on the inner side of FRP muscle stirrup, frame stands the inner side that FRP muscle depends on the stressed FRP muscle of top board, and top board stressed FRP muscle is connected to form effective connection with FRP stirrup.

Described FRP muscle comprises CFRP muscle, GFRP muscle, BFRP muscle, AFRP muscle;

Described fiber high-strength concrete be strength grade C50 and more than, and one or more concrete of the short fibers such as mixing of steel fiber, plastic-steel fabric, polypropylene fibre, polyacrylonitrile fibre, lignin fibre;

Described beam cross section is longitudinally uniform section or variable cross-section.。

The foregoing is only embodiment of the present utility model, be not limited to the utility model.The utility model can have various suitable change and change.All do within spirit of the present utility model and principle any amendment, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.

Claims (2)

1.FRP muscle fiber high-strength concrete beam component, is characterized in that:

Described FRP muscle fiber high-strength concrete beam component, comprises fiber high-strength concrete and is cast in interior FRP muscles and bones frame: described beam shape of cross section has Filled Rectangle, hollow rectangle, T-shaped or box-shaped; To rectangle and hollow rectangle cross section, described FRP muscles and bones frame is made up of longitudinal tensile FRP muscle, FRP muscle stirrup and longitudinal FRP bearing rod, and longitudinal tensile FRP muscle and frame found FRP muscle and to depend on inside FRP stirrup and with it together with colligation; To T section and box section, described FRP muscles and bones frame is found FRP muscle, soffit of girder distribution FRP muscle and the stressed FRP muscle of top board formed by longitudinal tensile FRP muscle, FRP stirrup, frame, longitudinal tensile FRP muscle depends on the inner side of FRP stirrup, distribution FRP muscle depends on the inner side of FRP muscle stirrup, frame stands the inner side that FRP muscle depends on the stressed FRP muscle of top board, and top board stressed FRP muscle is connected to form effective connection with FRP stirrup.

2. FRP muscle fiber high-strength concrete beam component according to claim 1, is characterized in that:

Described FRP muscle comprises CFRP muscle, GFRP muscle, BFRP muscle, AFRP muscle;

Described fiber high-strength concrete be strength grade C50 and more than, and one or more concrete of the short fibers such as mixing of steel fiber, plastic-steel fabric, polypropylene fibre, polyacrylonitrile fibre, lignin fibre;

Described beam cross section is longitudinally uniform section or variable cross-section.