CN101451339B - Fiber reinforcement composite material rope bridge and preparation method thereof - Google Patents
Fiber reinforcement composite material rope bridge and preparation method thereof Download PDFInfo
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- CN101451339B CN101451339B CN200710195205XA CN200710195205A CN101451339B CN 101451339 B CN101451339 B CN 101451339B CN 200710195205X A CN200710195205X A CN 200710195205XA CN 200710195205 A CN200710195205 A CN 200710195205A CN 101451339 B CN101451339 B CN 101451339B
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Abstract
The invention discloses a rope bridge made of a fiber reinforced composite material and a preparation method thereof. The rope bridge comprises a cable support tower and an inhaul cable or a suspension cable. The rope bridge is characterized in that a main body of a deck of the rope bridge consists of a plurality of bridge members made of the fiber reinforced composite material and extended along the length direction of the rope bridge in parallel. The preparation method comprises: preparing the plurality of the bridge members made of the fiber reinforced composite material, which are prepared by a field pull-extrusion molding machine and have same length as the deck; and arranging the plurality of the bridge members made of the fiber reinforced composite material in parallel to form a deck main body. The roper bridge, by using the longitudinally arranged bridge members made of the fiber reinforced composite material as the deck main body, can realize design and construction of the deck of a long-span or overlong-span rope bridge spanning across a kilometer or several kilometers, has the advantages of higher safety performance, light weight of the bridge body, convenient construction of the deck main body, long service life and simple construction mode of the preparation method for the rope bridge made of the fiber reinforced composite material, and can achieve quick and safe construction of the long-span or overlong-span rope bridge consisting of the bridge members made of the fiber reinforced composite material.
Description
Technical field
The invention belongs to bridge construction structure field, be specifically related to a kind of fibre reinforced composites that adopt as fiber reinforcement composite material rope bridge of bridge floor main body and preparation method thereof.
Background technology
Fibre reinforced composites (FRP) are to use increasingly extensive a kind of novel structural meterials in recent years in civil engineering.It has high-strength, lightweight, remarkable advantage such as corrosion-resistant, at the reinforcement and strengthening of structure, go along with sb. to guard him aspect such as anticorrosion and obtained good application.Along with the superior function of FRP material is approved by engineering circle gradually, external many engineerings begin it is applied in the newly-built bridge, or even in the Longspan Bridge.
Since the seventies in last century, the FRP material just begins to attempt using in bridge engineering.Britain, the U.S. and Israel use this new material at first as the main member in building structure and the bridge construction, and what adopted mostly at that time is GFRP (glass fibre reinforced composion, i.e. glass fiber reinforced plastic).In the later stage seventies, China also begins GFRP is studied.In nineteen eighty-two, Beijing Miyun has built up strides 20.7 meters in footpath, wide 9.2 meters GFRP freely-supported honeycomb case beam road bridge, design load grade vapour-15, hangs-80, and has carried out on-the-spot loading test, has proved the feasibility of FRP as supporting member.Occurring the honeycomb unstability after being open to traffic causes bridge floor to sink and the problem of case web top secondary buckling.Overhauled in 1987, bearing system is transformed into the GFRP-concrete combined structure, use so far, operation conditions is good.
The existing bridge that adopts fibre reinforced composites to construct, cable bridge particularly, as single tower stayed-cable bridge, double tower stayed-cable bridge or cable-suspended bridge, the fibre reinforced composites of its bridge floor main body mostly are crisscross or cross direction profiles is formed, the fibre reinforced composites bridge member of the employing space network that also has, the rod member for grid of fibre reinforced composites for example is to strengthen the intensity of integrated deck.The Design of length of the cable bridge of this kind structure can reach hundreds of rice, but the defective that exists is the increase along with cable bridge length, bridge floor is under wind and rain, vehicle or seismic loading, internal resonance takes place in the local vibration of flexible cable easily and between the structural entity vibration, produce excessive structural vibration response, be in the comfort level of the light then influence of the fibre reinforced composites bridge member driving in the vibration for a long time, heavy then cause fatigue failure, shorten member application life even harm structural safety.On the other hand, owing to adopt the fibre reinforced composites bridge member of shorter length or horizontally set, therefore the intersubjective tie point of bridge floor is more, and the shear strength of fibre reinforced composites FRP, interlaminal tensile strength and interlaminar shear strength only are 5～20% of its tensile strength, and the shear strength of metal is about 50% of its hot strength.This makes the distinct issues that are connected to become of FRP member.Though the FRP fibre reinforced composites can adopt riveted joint, bolt and bonding, no matter the sort of connected mode, connecting portion all is the weak link of whole bridge member.
Moreover, existing fibre reinforced composites bridge member all adopts factory process to be transported to the job location then, assemble the mode of installation again, this causes all fibres reinforced composite bridge member that adopts in the bridge construction to be the short member of length, is difficult to realize the more construction of the cable bridge of large span and the safety of assurance bridge.
Summary of the invention
The purpose of this invention is to provide a kind of employing fibre reinforced composites bridge member as the bridge floor main body, fiber reinforcement composite material rope bridge applicable to the design of the bridge floor of long span and overlength span cable bridge, it has higher safety performance, pontic is in light weight, the bridge floor main body construction is convenient, the advantage of long service life, solved existing low based on the cable bridge span of fibre reinforced composites bridge member, the defective of tie point poor safety performance.
Another object of the present invention provides the preparation method of above-mentioned fiber reinforcement composite material rope bridge, and it is simple that it has form of construction work, can realize carrying out with the fibre reinforced composites bridge member construction of the cable bridge of long span and overlength span.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of fiber reinforcement composite material rope bridge comprises Sarasota, suspension cable or hoist cable, and the bridge floor main body that it is characterized in that described cable bridge is that a plurality of fibre reinforced composites bridge members that extend along the cable bridge length direction are set up in parallel formation.
Concrete, length of fibre reinforced composites bridge member described in this cable bridge and bridge floor equal in length, this fibre reinforced composites brutal member is hollow tubular, entity or the cellular structure of square-section.
The below of described fibre reinforced composites brutal member is provided with supporting traverse, and described supporting traverse is connected and fixed by the hoist cable that is connected with suspension cable.
Described fibre reinforced composites bridge member is a drawing and extruding section bar, and the length of described pultrusion shape material is 20～3000m.
Described cable bridge is single tower stayed-cable bridge, double tower stayed-cable bridge or cable-suspended bridge, and the guardrail of described cable bridge both sides also is to constitute along the fibre reinforced composites bridge member that the cable bridge length direction extends.
The preparation method of above-mentioned fiber reinforcement composite material rope bridge, it is characterized in that described preparation method comprises adopts on-the-spot pultrusion machinery to prepare some fibre reinforced composites bridge members with the bridge floor equal in length, a plurality of fibre reinforced composites bridge members is set up in parallel forms the bridge floor main body.
The preparation method of above-mentioned fiber reinforcement composite material rope bridge is characterized in that described preparation method specifically comprises:
Adopt on-the-spot pultrusion machinery to prepare some fibre reinforced composites bridge members with the bridge floor equal in length, a plurality of fibre reinforced composites bridge members are set up in parallel form the bridge floor main body; Below the fibre reinforced composites bridge member supporting traverse is set then, the hoist cable that supporting traverse is connected with rope is connected and fixed; Road surface pavement material on the bridge floor main body that the fibre reinforced composites bridge member is formed.
The material that the fibre reinforced composites bridge member is adopted described in the above-mentioned preparation method is glass fiber, carbon fiber or the aramid fiber of resin matrix, hollow tubular, entity or cellular structure that described fibre reinforced composites bridge member is the square-section.
This fiber reinforcement composite material rope bridge changes the form of structure that connects to form the bridge floor main body both at home and abroad after the transverse fiber reinforced composite bridge member that generally uses is laid, adopt the mode of vertical permutation and combination transverse fiber reinforced composite bridge member, can realize the construction of the stayed-cable bridge of big span and bigger span, and need not consider connection on the length direction of bridge floor main body, promptly effectively reduced the potential safety hazard that connects existence because of transverse fiber reinforced composite bridge member, eliminate the influence of local resonance again, improved the intensity and the security performance of bridge floor main body.
The advantage that fibre reinforced composites have is in light weight, intensity is high, corrosion resistance is strong, hot strength is high, as the specific strength of the reinforced plastic glass fibre FRP Composite Material of routine is 20～50 times of steel, adopts fibre reinforced composites will alleviate dead load greatly.In bridge engineering, use the limit span of bridge is increased greatly, and can reduce the influence of geological process.Content that the engineer can be by using different kinds of fibers, control fiber and the fiber design of elaborating different directions go out the fibre reinforced composites product of various intensity and modulus of elasticity.And the convenient formation of product, but shape flexible design.It all has resistivity preferably for soda acid salt of seawater, atmosphere and low concentration etc.In addition, because the fibre reinforced composites bridge member adopts vertical pultrusion, it can infinitely stretch, and moulding length can reach more than the 3000m.
The plurality of fibers reinforced composite bridge member suitable with the pontic length of cable bridge placed side by side placement, can form the high and less bridge floor main body of resonance performance of intensity, on the bridge floor main body, can lay composite material or inorganic material and form the road surface, its weight is reduced to minimum value, the unit that has reduced Sarasota, suspension cable or hoist cable effectively is stressed, but can improve the design length of pontic effectively.
When this fiber reinforcement composite material rope bridge prepares, can adopt the fibre reinforced composites bridge member of the mode production sufficient length of on-the-spot pultrusion, then plurality of fibers reinforced composite bridge member is pieced together side by side the bridge floor main body of enough width, supporting traverse by the bridge floor main body carries out the bridge floor main body that suspension cable is fixed or hoist cable is fixed then, forms stayed-cable bridge or cable-suspended bridge.
Beneficial effect of the present invention is, this fiber reinforcement composite material rope bridge adopts the fibre reinforced composites bridge member that vertically is provided with as the bridge floor main body, can realize the bridge floor design and the construction of km long span and thousands of meters overlength span cable bridges, and has a higher safety performance, pontic is in light weight, the bridge floor main body construction is convenient, long service life, preparation method's form of construction work of fiber reinforcement composite material rope bridge is simple, can realize carrying out with the fibre reinforced composites bridge member construction fast and safely of the cable bridge of long span and overlength span.
Description of drawings
Fig. 1 is the composition structural representation of bridge floor main body in the specific embodiment of the invention;
Fig. 2 is the composition structural representation of double tower stayed-cable bridge in the specific embodiment of the invention.
The specific embodiment
The preparation method prepares some reinforced plastic glass fibre reinforced composite bridge members with the bridge floor equal in length for adopting on-the-spot pultrusion machinery, a plurality of fibre reinforced composites bridge members is set up in parallel forms the bridge floor main body; Below the fibre reinforced composites bridge member supporting traverse is set then, the hoist cable that supporting traverse is connected with rope is connected and fixed; Road surface pavement material on the bridge floor main body that the fibre reinforced composites bridge member is formed.
The preparation method prepares some reinforced plastic glass fibre reinforced composite bridge members with the bridge floor equal in length for adopting on-the-spot pultrusion machinery, a plurality of fibre reinforced composites bridge members is set up in parallel forms the bridge floor main body; Below the fibre reinforced composites bridge member supporting traverse is set then, the hoist cable that supporting traverse is connected with suspension cable is connected and fixed; Road surface pavement material on the bridge floor main body that the fibre reinforced composites bridge member is formed.
Claims (2)
1. the preparation method of a fiber reinforcement composite material rope bridge, comprise Sarasota, drag-line or hoist cable, the bridge floor main body of described cable bridge is that a plurality of fibre reinforced composites bridge members that extend along the cable bridge length direction are set up in parallel formation, it is characterized in that described preparation method comprises adopts on-the-spot pultrusion machinery to prepare some fibre reinforced composites bridge members with the bridge floor equal in length, a plurality of fibre reinforced composites bridge members is set up in parallel forms the bridge floor main body;
Below the fibre reinforced composites bridge member supporting traverse is set then, the hoist cable that supporting traverse is connected with rope is connected and fixed; Road surface pavement material on the bridge floor main body that the fibre reinforced composites bridge member is formed.
2. the preparation method of fiber reinforcement composite material rope bridge according to claim 1, it is characterized in that the material that described fibre reinforced composites bridge member is adopted is glass fiber, carbon fiber or the aramid fiber of resin matrix, hollow tubular, entity or cellular structure that described fibre reinforced composites bridge member is the square-section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710195205XA CN101451339B (en) | 2007-12-05 | 2007-12-05 | Fiber reinforcement composite material rope bridge and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710195205XA CN101451339B (en) | 2007-12-05 | 2007-12-05 | Fiber reinforcement composite material rope bridge and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101451339A CN101451339A (en) | 2009-06-10 |
| CN101451339B true CN101451339B (en) | 2011-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200710195205XA Expired - Fee Related CN101451339B (en) | 2007-12-05 | 2007-12-05 | Fiber reinforcement composite material rope bridge and preparation method thereof |
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| CN (1) | CN101451339B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067199A (en) * | 2019-05-22 | 2019-07-30 | 山东非金属材料研究所 | One kind preventing the big pulling force list rope of swollen type carbon fiber enhancement resin base composite material, preparation method and its application |
| CN113322789A (en) * | 2021-06-29 | 2021-08-31 | 清华大学 | Fiber reinforced composite material pultruded profile and concrete combined hanging beam and bridge |
| 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 |
-
2007
- 2007-12-05 CN CN200710195205XA patent/CN101451339B/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 冯鹏等.纤维增强复合材料桥面板的应用与研究.《第三届全国FRP学术交流会议论文集》.2004, * |
| 魏广胜等.美国的纤维增强桥面板.《国外公路》.2001,第21卷(第1期), * |
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| CN101451339A (en) | 2009-06-10 |
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Addressee: Beijing Hyper Strong Bridge Technology Co., Ltd. Document name: Notification to Pay the Fees |
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Granted publication date: 20110907 Termination date: 20131205 |