CN100487197C - Fibre plastic-steel combination beam - Google Patents
Fibre plastic-steel combination beam Download PDFInfo
- Publication number
- CN100487197C CN100487197C CNB2007100449218A CN200710044921A CN100487197C CN 100487197 C CN100487197 C CN 100487197C CN B2007100449218 A CNB2007100449218 A CN B2007100449218A CN 200710044921 A CN200710044921 A CN 200710044921A CN 100487197 C CN100487197 C CN 100487197C
- Authority
- CN
- China
- Prior art keywords
- glass fiber
- wing edge
- steel
- box beam
- frp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The invention belongs to the bridge engineering field and relates in specific to a fiber plastic-steel composite beam that comprises a cold-formed sheet and a fiber reinforced plastic (FRP) box beam. The cold-formed sheet is a groove-shaped structure that is composed of a crown plate and reinforced ribs connected with ends of the crown plate; the box beam is a box-shaped structure comprising an upper wing edge, a lower wing edge and two side webs that are connected in every two components. The structure is shown in the diagram; wherein, the crown plate is arranged on top of the upper wing edge of the box beam; the reinforced ribs on both ends are respectively linked to two webs. The lower wing edge of the box beam is composed of glass fiber prepregs and carbon fiber prepregs that are alternatively laminated with each other; the upper wing edge is laminated with glass fiber prepregs; the web is made of glass fiber prepregs in a congruent mode. The invention fulfills manufacturing with molded techniques and fabricated in a one-through overall formation. The invention has advantages of high steel beam rigidity, high bearing capacity, perfect anti-corrosion of FRP beams, and low self-weight, and meanwhile, excellent ductility performance. Therefore, the invention is a new selection for bridge construction.
Description
Technical field
The invention belongs to technical field of bridge engineering, be specifically related to a kind of fibre plastic-steel combination beam.
Background technology
In bridge engineering; traditional shaped steel girder is in the exposure property environment for a long time, and the easy corrosion of steel is especially worked as bridge and is in the erosion environment conditions such as harbour, harbour; usually can influence functional performance, durability and the safety of structure, thereby cause great potential safety hazard because of the steel corrosion.In order to address this problem, can adopt fibre reinforced plastics (hereinafter to be referred as FRP) section bar to replace traditional girder steel.
The FRP section bar is to be mixed by a certain percentage and the compounded worker's shape of process certain technology (as pultrusion, mold pressing, hand paste etc.), grooved or box-shaped section bar by fiber and matrix material.Its single load bearing performance is good, light weight, anticorrosive and anti-fatigue performance good, and the Chang Zuowei strong corrosive environment is the structure materials of building or bridge down.But the FRP material stiffness is lower, and carbon fibre reinforcement (CFRP) modulus of elasticity is about 70% of steel, and the modulus of elasticity of fiber glass reinforcement (GFRP) only is 1/10～1/4 of steel.In addition, different with traditional structural materials, the FRP material is usually expressed as anisotropy, and the tensile strength of machine direction is higher by 30% than compressive strength, and shear strength, interlaminal tensile strength only are 5～20% of its tensile strength.Therefore, the destruction of full FRP member often starts from damaging by pressure of pressure zone FRP material, and its ductility is relatively poor, destroys to have emergentness.
Summary of the invention
The object of the present invention is to provide that a kind of corrosion resistance is good, supporting capacity is high, rigidity is big, from heavy and light and the good fibre plastic-steel combination beam of ductility.
The fibre plastic-steel combination beam that the present invention proposes, form by profiled sheet 1, fibre reinforced plastics case beam 2, the bathtub construction that profiled sheet 1 is connected to form for the ribs by top board and top end, the box structure of case beam 2 for being connected to form in twos by top flange 3, bottom flange 4 and two coxostermums 5, its structure as shown in Figure 1, wherein, the top board of profiled sheet 1 is positioned at 3 tops, top flange, and two ribs connect two webs 5 respectively.Bottom flange 4 is adopted glass fiber prepreg and carbon fiber prepreg to be superimposed and is formed, and top flange 3 adopts the glass fiber prepreg to be formed by stacking, and web 5 adopts the glass fiber prepreg to be formed by stacking.Wherein, the prepreg machine direction at top flange 3,4 places, bottom flange is 0 ° and 90 °, and 90 ° are about 0 ° of to fiber content 1/3～1/6,90 ° to fiber content and longitudinal crack occur to the very few case beam surface that might cause of fiber.Web 5 place's prepreg machine directions are ± 45 °, to improve the shear resistance of web.The resin that injects mould in the mould pressing process can be selected unsaturated polyester (UP) for use.In addition, be to guarantee the cooperative bearing of profiled sheet and FRP material, also can carry out surfacing to profiled sheet, with the compound action of raising steel plate and FRP material in conjunction with impression, measure such as punch.
When the present invention uses the flute profile profiled sheet is placed the pressure zone of member, and adopt the case beam of forming by fibre reinforced plastics to coat profiled sheet, make integral one-step molding by mould pressing process.
The present invention is according to the performance characteristics of steel and FRP material, and with steel with the FRP material combines and cooperative bearing, steel can improve the modulus and the intensity of combined member.Under less moment of flexure effect, compound beam is in elastic stage, and steel are identical with the FRP material strain, and profiled sheet and FRP material are born the member load jointly.Along with strain continues to increase, profiled sheet enters the plastic strain stage (strain is greater than 0.0015), the section stress redistribution, and external load transfers mainly to be born by the FRP material, and member produces bigger distortion.At last, the FRP of place material in case beam top flange reaches its limiting strain value, component damage.In sum, fibre plastic-steel combination beam has higher intensity and modulus of elasticity, and has good plastic deformation ability.
The invention has the advantages that: corrosion resistance is good, and member dead weight is light, the rigidity height, and ductility is good.And the present invention is simple in structure, and the beam deadweight is compared with steel profile greatly and reduced.Be applicable to the construction of the works and the simply supported girder bridge in severe corrosive environment area.
Description of drawings
Fig. 1 is a cross sectional representation of the present invention.
Fig. 2 is a schematic three dimensional views of the present invention.
Number in the figure: 1 is profiled sheet, and 2 is the case beam, and 3 is the top flange, and 4 is the bottom flange, and 5 is web.
The specific embodiment
Further specify the present invention in conjunction with the accompanying drawings below by embodiment.
Embodiment 1, the bathtub construction of profiled sheet 1 for being connected to form by top board and two ribs, and flute profile profiled sheet 1 can be made in advance in factory, can determine its cross sectional dimensions according to actual needs and select whether to carry out the impression processing.The box structure of case beam 2 for being connected to form in twos by top flange 3, bottom flange 4 and two coxostermums 5, the top board of profiled sheet is positioned at 3 tops, top flange, and two ribs connect two webs 5 respectively.Bottom flange 4 is superimposed by glass fiber prepreg and carbon fiber prepreg and forms, and top flange 3 is formed by stacking by the glass fiber prepreg, and web 5 is formed by stacking by the glass fiber prepreg.Glass fiber prepreg, carbon fiber prepreg are put into mould in proper order according to design fiber lay down layer, behind flute profile profiled sheet 1 surperficial epoxy resin coating, it is imbedded in the top flange in the glass fiber prepreg.Glass fiber prepreg machine direction as web 5 places is ± 45 °, and the glass fiber prepreg machine direction at upper and lower edge of a wing place is 0 ° and 90 °, and 90 ° are about 0 ° to 1/3～1/6 of fiber content to fiber content.Inject resin, close die, the space between mould is exactly the thickness of goods defined, and solidify on limit pressurization then, limit, makes material fill the gap just.Pressuring method can adopt easy device (about 1.4～2.5 atmospheric pressure of pressure) pressurizations such as air bag, perhaps only mold cramping.Form removal promptly gets the present invention after treating resin slaking fully.
Claims (1)
1, a kind of fibre plastic-steel combination beam, form by profiled sheet (1), case beam (2), it is characterized in that the bathtub construction of profiled sheet (1) for forming by the ribs of top board and top end, the box structure of case beam (2) for being connected to form in twos by top flange (3), bottom flange (4) and two coxostermums (5), wherein, profiled sheet (1) is coated on top, top flange (3), and two ribs place two webs (5) respectively; Bottom flange (4) is adopted glass fiber prepreg and carbon fiber prepreg to be superimposed and is formed, and top flange (3) adopt the glass fiber prepreg to be formed by stacking, and web (5) adopts the glass fiber prepreg to be formed by stacking; The prepreg machine direction that top flange (3), bottom flange (4) are located is 0 ° and 90 °, 0 ° to fingerboard vertically, 90 ° to fingerboard laterally, 90.To fiber content be 0 ° to 1/3～1/6 of fiber content, web (5) is located the prepreg machine direction and is ± 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100449218A CN100487197C (en) | 2007-08-16 | 2007-08-16 | Fibre plastic-steel combination beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100449218A CN100487197C (en) | 2007-08-16 | 2007-08-16 | Fibre plastic-steel combination beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101139814A CN101139814A (en) | 2008-03-12 |
| CN100487197C true CN100487197C (en) | 2009-05-13 |
Family
ID=39191906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100449218A Expired - Fee Related CN100487197C (en) | 2007-08-16 | 2007-08-16 | Fibre plastic-steel combination beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100487197C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101768915B (en) * | 2010-01-28 | 2012-04-18 | 南京工业大学 | Composite material arch structural beam |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985825A (en) * | 2010-11-20 | 2011-03-16 | 大连理工大学 | Fiber reinforced plastic-concrete composite beam |
| CN106181059A (en) * | 2016-07-05 | 2016-12-07 | 深圳市光大激光科技股份有限公司 | A kind of carbon fibre composite crossbeam for laser cutting device |
| RU179151U1 (en) * | 2017-08-07 | 2018-04-28 | Федеральное государственное казенное военное образовательное учреждение высшего образования "ВОЕННАЯ АКАДЕМИЯ МАТЕРИАЛЬНО-ТЕХНИЧЕСКОГО ОБЕСПЕЧЕНИЯ имени генерала армии А.В. Хрулева" | LIGHTENED MAIN BEAM OF SPAN STRUCTURE OF THE METAL RACING REM-500 |
| RU192928U1 (en) * | 2018-11-30 | 2019-10-07 | Федеральное государственное казенное военное образовательное учреждение высшего образования "ВОЕННАЯ АКАДЕМИЯ МАТЕРИАЛЬНО-ТЕХНИЧЕСКОГО ОБЕСПЕЧЕНИЯ имени генерала армии А.В. Хрулева" | PACKAGE SPAN STRUCTURE WITH MAIN BEAMS OF BOXED CROSS CROSS SECTION FROM COMPOSITE MATERIALS |
| RU189937U1 (en) * | 2018-12-29 | 2019-06-11 | Федеральное государственное казенное военное образовательное учреждение высшего образования "ВОЕННАЯ АКАДЕМИЯ МАТЕРИАЛЬНО-ТЕХНИЧЕСКОГО ОБЕСПЕЧЕНИЯ имени генерала армии А.В. Хрулева" | CONSTRUCTION OF A LIGHTWAY FLIGHT STRUCTURE REMOTE OF REM - 500 |
| CN113235820A (en) * | 2021-06-22 | 2021-08-10 | 清华大学 | Fiber reinforced composite material pultrusion profile with web stiffening rib |
| CN114717929A (en) * | 2022-03-11 | 2022-07-08 | 中冶建筑研究总院有限公司 | Opening and closing bridge supported by CFRP plate strip |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001262708A (en) * | 2000-03-15 | 2001-09-26 | Oriental Construction Co Ltd | Frp concrete composite structure using frp lamination panel |
| US6321504B1 (en) * | 1997-05-06 | 2001-11-27 | Peehr Mathias Ornfeldt Svensson | Pre-manufactured roof plate element and girder thereto |
| JP2004360189A (en) * | 2003-06-02 | 2004-12-24 | Oriental Construction Co Ltd | Pc box girder bridge |
| CN2911057Y (en) * | 2006-03-16 | 2007-06-13 | 同济大学 | Concrete beam having partially bond prestressed FRP bars |
-
2007
- 2007-08-16 CN CNB2007100449218A patent/CN100487197C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6321504B1 (en) * | 1997-05-06 | 2001-11-27 | Peehr Mathias Ornfeldt Svensson | Pre-manufactured roof plate element and girder thereto |
| JP2001262708A (en) * | 2000-03-15 | 2001-09-26 | Oriental Construction Co Ltd | Frp concrete composite structure using frp lamination panel |
| JP2004360189A (en) * | 2003-06-02 | 2004-12-24 | Oriental Construction Co Ltd | Pc box girder bridge |
| CN2911057Y (en) * | 2006-03-16 | 2007-06-13 | 同济大学 | Concrete beam having partially bond prestressed FRP bars |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101768915B (en) * | 2010-01-28 | 2012-04-18 | 南京工业大学 | Composite material arch structural beam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101139814A (en) | 2008-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100487197C (en) | Fibre plastic-steel combination beam | |
| Wei et al. | Flexural performance of bamboo scrimber beams strengthened with fiber-reinforced polymer | |
| Zhu et al. | Fiber reinforced composites sandwich panels with web reinforced wood core for building floor applications | |
| You et al. | An experimental investigation on flexural behavior of RC beams strengthened with prestressed CFRP strips using a durable anchorage system | |
| CN103628697B (en) | The continuously shaped intelligent plate of fiber grating fibre reinforced composites pultrusion | |
| Lopez-Anido et al. | Structural characterization of hybrid fiber-reinforced polymer-glulam panels for bridge decks | |
| CN1884700A (en) | Bamboo bridge | |
| CN102425105B (en) | Construction method of longitudinal non-shearing resistance screw-type pullout-resistance connecting piece | |
| Zhang et al. | Mechanical performance of GFRP-profiled steel sheeting composite sandwich beams in four-point bending | |
| CN200946244Y (en) | Outer fiber enwound reinforced composite material hollow decking | |
| CN103448338B (en) | Metal plate/fiber mixed reinforced sandwich plate | |
| CN2918523Y (en) | Bamboo wood bridge | |
| CN211251558U (en) | 3D printing structure composite material sandwich board with negative Poisson ratio effect | |
| CN205276129U (en) | Fibre reinforced composite - bamboo combination decking | |
| CN106836639B (en) | FRP box-shaped section-concrete combined beam provided with bidirectional shear keys | |
| CN201610516U (en) | Composite material arch structural beam | |
| CN101768915A (en) | Composite material arch structural beam | |
| CN203742192U (en) | Fiber bragg grating fiber reinforced polymer continuous-pultrusion formed intelligent board | |
| CN203510814U (en) | Reinforcing-rib embedding type honeycomb structure for container floor | |
| Rahul et al. | Structural characterization of natural fiber-reinforced polymeric structural insulated panels for panelized construction | |
| CN104452570B (en) | Combined FRP (Fiber Reinforced Plastic) box-shaped sectional material for structure | |
| CN105780637A (en) | Corrugated web prestress FRP-concrete combined box beam and construction method thereof | |
| CN204282186U (en) | A kind of structure combined type FRP box-shaped section bar | |
| CN206280348U (en) | A kind of FRP components connect special double-rod plate bolt | |
| KR101848060B1 (en) | Reinforcing method of wood structure using steel bar embedded lamination wood |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090513 Termination date: 20110816 |