CN106801471A - A kind of FRP composite constructions of open type complex section shaped steel - Google Patents
A kind of FRP composite constructions of open type complex section shaped steel Download PDFInfo
- Publication number
- CN106801471A CN106801471A CN201710054322.8A CN201710054322A CN106801471A CN 106801471 A CN106801471 A CN 106801471A CN 201710054322 A CN201710054322 A CN 201710054322A CN 106801471 A CN106801471 A CN 106801471A
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- Prior art keywords
- shaped steel
- frp
- open type
- steel
- complex section
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/30—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Moulding By Coating Moulds (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses a kind of FRP composite constructions of open type complex section shaped steel, the composite construction is made up of the FRP of internal shaped steel and outside.FRP is solidificated in outside shaped steel by pultrusion heat cure moulding process, enables shaped steel with the common stress of FRP.FRP is solidificated in outside shaped steel by pultrusion heat cure moulding process, enables shaped steel with the common stress of FRP；In the starting stage, shaped steel ensures that this structure has rigidity higher；After shaped steel surrender, the composite construction still has obvious rigidity and bearing capacity；As load increases, the fiber in FRP reaches its ultimate tensile strength and is broken, and shaped steel continues to carry until destruction, the FRP composite constructions is had good ductility.Outside FRP protects embedded shaped steel from environmental corrosion.This FRP composite construction combines high elastic modulus, the high intensity of ductility high and FRP, the excellent corrosion resistance advantage of steel, has a good application prospect.This structure is more suitable in the steel construction high to corrosion resistance and mechanical property requirements.
Description
Technical field
The invention belongs to the material development in the fields such as building, traffic, water conservancy, and in particular to a kind of opening for civil engineering
The FRP composite constructions of mouth formula complex section shaped steel.Its feature is light weight, corrosion-resistant, cost performance is high, ductility is good, intensity and
Elastic modelling quantity is high.
Background technology
Open type complex section steel member is one of construction unit the most frequently used in building, and it includes I-steel, H-shaped
Steel, channel-section steel, rail and T steel etc..Open type complex section steel member because the advantages of elastic modelling quantity is big, ductility is good in building work
Journey field is widely used.But there is corrosion-resistant in it, from it is great the problems such as.Fiber-reinforced polymer (FRP) with
Its intensity is high, light weight, it is corrosion-resistant the advantages of, start the extensive use in civil engineering structure, and by the extensive of engineering circles
Concern.FRP is made up of the continuous tow with drawing-resistant function and the polymeric matrix with cementation.However, FRP's is anti-
Intensity is cut much smaller than its tensile strength, stress-strain diagram does not have yield point, belongs to brittle break.And the elastic modelling quantity of FRP
It is relatively low, it is bigger than normal in serviceability limit stage amount of deflection.Lasting high prices of the FRP over many years causes the research of FRP and application to receive reality
The restriction of border economic factor.By FRP and steel carry out it is compound can make both each advantage be comprehensively utilized, prepare mass
Gently, corrosion-resistant, cost performance is high, ductility is good, intensity and elastic modelling quantity FRP composite constructions high.
Before this, someone is it is proposed that steel-FRP composite reinforcing structures, and it to improve its corrosion resistance is that the proposition of this structure is
Hair point, does not take into full account that steel is acted on the sharing lood of FRP.At the same time, the preparation technology of steel-FRP composite reinforcings is only applicable
In the shaping of simple circle small bore muscle material.Open type complex section FRP components have been widely used in engineering, but still deposit
Rigidity it is low, ductility is poor, high cost, deform under load action big and the problems such as in brittle break.At present still without comprehensive profit
With the composite construction of the respective advantage of steel and open type complex section FRP components.
The present invention proposes a kind of FRP composite constructions of open type complex section shaped steel.Open type complex section shaped steel
The shaped steel and FRP of FRP composite constructions are integrally formed by pultrusion die.Adhesion strength is high between shaped steel and FRP, production efficiency is high,
Shaped steel and FRP can stress jointly, belong to good corrosion resistance, ductility structure high.
The content of the invention
The purpose of the present invention is directed to the deficiencies in the prior art, there is provided a kind of lightweight, corrosion-resistant, cost performance are high, ductility
The FRP composite constructions of good, elastic modelling quantity and intensity open type complex section shaped steel high.
To achieve these goals, the technical solution adopted in the present invention is：A kind of FRP of open type complex section shaped steel
Composite construction, the composite construction is made up of the FRP of internal shaped steel and outside.FRP is consolidated by pultrusion heat cure moulding process
Change outside shaped steel, enable shaped steel with the common stress of FRP.
Described FRP layers is composited by continuous fiber and thermosetting resin, and continuous fiber is basalt fibre, glass fibers
Dimension, carbon fiber or aramid fiber.
Described open type shaped steel is I-steel, H-shaped steel, channel-section steel, rail or T steel.
According to required mechanical performance index, the volume ratio of FRP material and shaped steel is calculated according to composite theory.
The shaped steel first passes through impregnation, then by pultrusion heat cure moulding process is molded and is cured to open type FRP and answer
The outside of miscellaneous section shaped steel.
Pultrusion molding process uses the mould corresponding with open type complex section beam steel shape.
A kind of preparation technology of the FRP composite constructions of open type complex section shaped steel is：Send yarn → fiber impregnation → opening
The formula shaped steel impregnation → collection of filaments → open type shaped steel inserts → it is molded → cuts into institute by mould pultrusion → heat cure
Need finished product.
FRP is solidificated in outside shaped steel by pultrusion heat cure moulding process, enables shaped steel with the common stress of FRP；Open
The process of the FRP composite construction bearing loads of mouth formula complex section shaped steel is as follows, and in the starting stage, shaped steel ensures that this structure has
Rigidity higher；After shaped steel surrender, the composite construction still has obvious rigidity and bearing capacity；As load increases, in FRP
Fiber reach its ultimate tensile strength and be broken, shaped steel continues to carry until destruction, has the FRP composite constructions good
Ductility.Outside FRP protects embedded shaped steel from environmental corrosion.This FRP composite construction combines the high elastic modulus of steel, Gao Yan
High intensity, the excellent corrosion resistance advantage of property and FRP, have a good application prospect.This structure is more suitable for corrosion-resistant
In property and mechanical property requirements steel construction high.
Brief description of the drawings
Fig. 1 is a kind of FRP composite construction schematic diagrames of embedded channel-section steel；
Fig. 2 is Fig. 1 element cross-section figures.
Specific embodiment
Channel-section steel is a kind of form of open type shaped steel, below by taking channel-section steel as an example, with reference to drawings and Examples to this hair
Bright technical scheme is explained in detail.
As depicted in figs. 1 and 2, this example provides a kind of FRP composite constructions of embedded channel-section steel, including channel-section steel 1, fastening
FRP layers 2 outside channel-section steel 1.
The channel-section steel and fibre bundle that epoxy resin will be infiltrated send into pultrusion die together according to a certain percentage, then using heat
Curing process carries out curing molding.The fibre bundle be heating and curing after epoxy resin-base volume ratio be 2-3.Described
FRP layers of 2 sectional area account for the 35-40% of the total sectional area of the FRP composite constructions of interior caulking groove I-steel.
FRP is solidificated in outside channel-section steel by pultrusion molding process, and mould is groove-shaped mold.
The main preparation technology of FRP structures of embedded channel-section steel is：Send yarn → fiber impregnation → channel-section steel impregnation → fiber collection
Beam → channel-section steel inserts → it is molded → cuts into required finished product by mould pultrusion → heat cure.
A kind of FRP composite constructions of open type complex section shaped steel of the present invention use traditional pultrusion heat cure moulding process,
Scrap build requirement is little, can be produced on existing extruding equipment, and application prospect is extensive.
Claims (7)
1. a kind of open type embeds the FRP composite constructions of complex section shaped steel, it is characterised in that：The structure by internal shaped steel and
FRP layers of outside composition；FRP is solidificated in outside shaped steel by pultrusion heat cure moulding process, enables shaped steel common with FRP
Stress；
Described FRP layers is composited by continuous fiber and thermosetting resin, and continuous fiber is basalt fibre, glass fibre, carbon
Fiber or aramid fiber.
2. a kind of open type according to claim 1 embeds the FRP composite constructions of complex section shaped steel, it is characterised in that：
Open type shaped steel is I-steel, H-shaped steel, channel-section steel, rail or T steel.
3. a kind of open type according to claim 1 embeds the FRP composite constructions of complex section shaped steel, it is characterised in that：
According to required mechanical performance index, the volume ratio of FRP material and shaped steel is calculated according to composite theory.
4. a kind of open type according to claim 1 embeds the FRP composite constructions of complex section shaped steel, it is characterised in that：
The shaped steel first passes through impregnation, then is molded FRP by pultrusion heat cure moulding process and is cured to the outside of shaped steel.
5. a kind of open type according to claim 1 embeds the FRP composite constructions of complex section shaped steel, it is characterised in that：
Pultrusion molding process uses the mould corresponding with open type complex section beam steel shape.
6. a kind of open type according to claim 5 embeds the FRP composite constructions of complex section shaped steel, it is characterised in that：
The preparation technology of the composite construction is：Yarn → fiber impregnation → open type shaped steel impregnation → the collection of filaments → open type shaped steel is sent to put
Enter → it is molded → cuts into required finished product by mould pultrusion → heat cure.
7. a kind of open type according to claim 6 embeds the FRP composite constructions of complex section shaped steel, it is characterised in that：
FRP is solidificated in outside shaped steel by pultrusion heat cure moulding process, enables shaped steel with the common stress of FRP；Open type is embedded
The process of the FRP composite construction bearing loads of complex section shaped steel is as follows, and in the starting stage, shaped steel ensures that this structure has Gao Gang
Degree；After shaped steel surrender, the composite construction still has bearing capacity；As load increases, the fiber in FRP reaches the drawing of its limit should
Change is broken, and shaped steel continues to carry until destruction, the FRP composite constructions is had good ductility.Outside FRP protections are embedded
Shaped steel is from environmental corrosion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710054322.8A CN106801471A (en) | 2017-01-22 | 2017-01-22 | A kind of FRP composite constructions of open type complex section shaped steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710054322.8A CN106801471A (en) | 2017-01-22 | 2017-01-22 | A kind of FRP composite constructions of open type complex section shaped steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106801471A true CN106801471A (en) | 2017-06-06 |
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ID=58987296
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710054322.8A Pending CN106801471A (en) | 2017-01-22 | 2017-01-22 | A kind of FRP composite constructions of open type complex section shaped steel |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201047062Y (en) * | 2007-06-08 | 2008-04-16 | 万水 | Resin-based glass fiber-reinforced plastic bridge panel |
| CN102979964A (en) * | 2011-09-07 | 2013-03-20 | 上海启鹏工程材料科技有限公司 | Fiber reinforced polymer (FRP) material and stainless steel tube composite and preparation technology thereof |
| CN203603362U (en) * | 2013-10-24 | 2014-05-21 | 同济大学 | Double-web pre-stressed fiber reinforced composite material composite beam |
| CN203603017U (en) * | 2013-10-24 | 2014-05-21 | 同济大学 | I-shaped prestress fiber reinforced composite material composite beam |
| CN105401695A (en) * | 2015-12-21 | 2016-03-16 | 郑州大学 | Novel composite FRP bar |
-
2017
- 2017-01-22 CN CN201710054322.8A patent/CN106801471A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201047062Y (en) * | 2007-06-08 | 2008-04-16 | 万水 | Resin-based glass fiber-reinforced plastic bridge panel |
| CN102979964A (en) * | 2011-09-07 | 2013-03-20 | 上海启鹏工程材料科技有限公司 | Fiber reinforced polymer (FRP) material and stainless steel tube composite and preparation technology thereof |
| CN203603362U (en) * | 2013-10-24 | 2014-05-21 | 同济大学 | Double-web pre-stressed fiber reinforced composite material composite beam |
| CN203603017U (en) * | 2013-10-24 | 2014-05-21 | 同济大学 | I-shaped prestress fiber reinforced composite material composite beam |
| CN105401695A (en) * | 2015-12-21 | 2016-03-16 | 郑州大学 | Novel composite FRP bar |
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Application publication date: 20170606 |