CN205558037U

CN205558037U - FRP board - concrete combination beam

Info

Publication number: CN205558037U
Application number: CN201620354046.8U
Authority: CN
Inventors: 刘华新; 杨剑伟; 王学志; 孔祥清; 韩定杰; 李劲松; 柳根金
Original assignee: Liaoning University of Technology
Current assignee: Liaoning University of Technology
Priority date: 2016-04-26
Filing date: 2016-04-26
Publication date: 2016-09-07
Anticipated expiration: 2026-04-26

Abstract

The utility model relates to a FRP board concrete combination beam, this concrete beam embed trompil FRP board, vertical FRP muscle, are applied to the concrete beam under the intensive A corrosive environment, belong to fields such as building, bridge, harbour. This FRP board does the concrete combination beam pass vertical FRP muscle FRP diaphragm orifice hole or fixes into the FRP board along the side ligature of FRP inboard FRP bones RACK places in the concrete beam mould. This is the substituted stirrup effect of FRP board for the roof beam, and the FRP muscle replaces the longitudinal reinforcement effect, not only can avoid the corruption of reinforcing bar, still can solve the problem that the FRP muscle is difficult to bend to the stirrup.

Description

A kind of FRP Plate - Concrete combination beam

Technical field

This utility model relates to a kind of FRP plate-concrete combination beam, is applied to the beams of concrete under intensive corrosive environment, belongs to the fields such as building, bridge, harbour.

Background technology

In Practical Project, steel bar corrosion not only causes the degradation of infrastructure durability, causes huge economic loss simultaneously.Especially fairly obvious on reinforced concrete structure impact at severe cold area and coastal area, freeze thawing and wet environment.Intensive corrosive environment effect will cause the bonding failure between reinforcing bar and concrete to deterioration and the damage of xoncrete structure, and finally causes damage and the destruction of structure.The appearance of fibre reinforced composites in recent years, significantly improves this situation, and fibre reinforced composites have lightweight, the plurality of advantages such as high-strength, corrosion-resistant；The particularly appearance of fiber bar, can be widely used in the numerous areas of civil engineering the most with the Reinforcement in replacing structure with anticorrosion.

In reinforced concrete structure, stirrup plays a role primarily as shear reinforcement, limits inside concrete crack progressing, improves adhesion strength.But, owing to fiber bar toughness is bad, it is weak to bending, the breakthrough that engineering circles is the biggest in terms of the processing technology of FRP stirrup.This defect causes significant limitation to the engineer applied of fiber bar.How fibrous material is applied more broadly in reinforced concrete structure, the focus studied both at home and abroad to improve its mechanical property to become.

Summary of the invention

For the deficiency overcoming prior art to exist, a kind of FRP plate-concrete combination beam of existing offer.Purpose is to use perforate fibre board to substitute stirrup, to overcome fiber bar to be weak to characteristic and the most corrosion resistant defect of regular reinforcement of bending, improves shear behavior and the durability of beams of concrete.

For achieving the above object, this utility model is by the following technical solutions:

Described FRP plate-concrete combination beam, comprises beams of concrete and is cast in interior FRP plate and longitudinal FRP muscles and bones frame.

In described FRP plate-concrete combination beam, FRP plate spacing can refer to dependent Concrete code for structural design and requires stirrup design and set, it is considered to beam shear span section, seismic behavior, load form, the factor such as depth of section of beam.

Longitudinal direction FRP muscle, in manufacturing process, first through FRP plate hole or is fixed by described FRP plate-concrete combination beam along FRP plate medial surface colligation；Wherein, the void shape of FRP plate can be square, rectangle or circle, and number determines according to the equivalent stiffness principle of stirrup with big I；Again FRP plate-FRP muscles and bones frame being positioned over beams of concrete mould appropriate location, finally pour into a mould concrete, described concrete includes normal concrete, regeneration concrete, self-compacting concrete, fiber concrete, high performance concrete.

Described FRP plate-concrete combination beam, the type of beam includes shallow beam, short beam and deep beam.

Compared with prior art, this utility model beneficial effect:

This utility model relates to a kind of FRP plate-concrete combination beam, this beams of concrete built-in perforate FRP plate, longitudinal FRP muscle, wherein longitudinal FRP muscle through FRP plate hole or is fixed along FRP plate medial surface colligation, it is applied to the beams of concrete under intensive corrosive environment, belongs to the fields such as building, bridge, harbour.

This utility model perforate FRP plate substitutes stirrup, effectively overcomes fiber bar and is weak to the problem that bending should not be fabricated to stirrup；The hole of FRP plate is effectively increased the mobility between concrete, enhances the bonding between concrete and FRP plate；Meanwhile, perforate fibre board substitutes stirrup, can effectively solve the intensive the most corrosion resistant defect of corrosion area reinforcing bar, improve shear behavior and the durability of beams of concrete.

Accompanying drawing explanation

Fig. 1 is this utility model embodiment 1 structural representation.

Fig. 2 is the A-A sectional view of Fig. 1.

Fig. 3 is FRP plate-FRP muscles and bones frame axonometric chart.

Fig. 4 is this utility model embodiment 2 structural representation.

Fig. 5 is the B-B sectional view of Fig. 4.

In figure: 1-FRP plate, 2-longitudinal direction FRP muscle, 3-concrete, 4-FRP lath

Detailed description of the invention

Embodiment 1

This FRP plate-concrete combination beam, comprises FRP plate 1, longitudinal FRP muscle 2, concrete 3.

Described FRP plate-concrete combination beam making step: first longitudinal FRP muscle 2 is passed the corresponding hole of FRP plate 1, then FRP plate 1 is fixed with longitudinal FRP muscle 2 colligation, be positioned over the appropriate location of beams of concrete mould, finally cast concrete 3.

Embodiment 2

This FRP plate-concrete combination beam, comprises FRP plate 1, longitudinal FRP muscle 2, concrete 3, FRP plate bar 4.

Described FRP plate-concrete combination beam making step: inside the FRP plate 1 first placed along parallel girder axis by longitudinal FRP muscle 2, colligation is fixed；With FRP plate bar 4, FRP plate 1 is connected formation closing skeleton again and be positioned over the appropriate location of beams of concrete mould, finally cast concrete 3.

Claims

1. FRP plate-concrete combination beam, it is characterised in that:

Described FRP plate-concrete combination beam, including concrete and the FRP plate-FRP muscles and bones frame being cast in inside: described FRP plate-FRP muscles and bones frame is made up of perforate FRP plate, longitudinal FRP muscle；Described perforate FRP plate hole number determines according to the equivalent stiffness principle of stirrup with big I；The described big I of FRP plate spacing is determined according to beam shear span section, different anti-seismic grade, load form, the factor such as depth of section of beam.

FRP plate-concrete combination beam the most according to claim 1, perforate FRP plate can be parallel or perpendicular to beam axis and arrange, longitudinal FRP muscle through FRP plate hole or is fixed along FRP plate medial surface colligation.

FRP plate-concrete combination beam the most according to claim 1, the void shape of perforate FRP plate is square, rectangle or circle.

FRP plate-concrete combination beam the most according to claim 1, concrete type is including but not limited to Types Below: normal concrete, regeneration concrete, self-compacting concrete, fiber concrete, high performance concrete.

FRP plate-concrete combination beam the most according to claim 1, the type of beam includes shallow beam, short beam and deep beam.