CN108708278A - A kind of antifatigue steel bridge deck - Google Patents
A kind of antifatigue steel bridge deck Download PDFInfo
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- CN108708278A CN108708278A CN201810765323.8A CN201810765323A CN108708278A CN 108708278 A CN108708278 A CN 108708278A CN 201810765323 A CN201810765323 A CN 201810765323A CN 108708278 A CN108708278 A CN 108708278A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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Abstract
The present invention relates to a kind of antifatigue steel bridge decks, including steel plate, bridge deck pavement and multiple silent shape longitudinal stiffeners；Longitudinal stiffener is arranged along the longitudinal direction interval of steel bridge, in the space between adjacent longitudinal stiffener along the longitudinal direction, is provided with the inverted T shaped transverse stiffener being welded in along steel plate transverse direction on steel plate；Above and below the web both sides of transverse stiffener, 4 pieces of reinforcing plates are symmetrically arranged at intervals with, symmetrical two pieces of reinforcing plates constitute complete parabolic shape；All full penetration weld is used to connect between longitudinal stiffener and steel plate, between transverse stiffener and steel plate；By epoxy adhesive, horizontal and vertical intersection is pasted onto on the lower surface of steel plate and longitudinal stiffener carbon fibre reinforced composite respectively.Using the antifatigue steel bridge deck in the application, the load performance of agent structure can not only be improved, its anti-fatigue performance can be more effectively improved, have a vast market application prospect.
Description
Technical field
The present invention relates to a kind of antifatigue steel bridge decks, are suitable for the technical field of science of bridge building.
Background technology
Steel bridge deck is generally made of steel plate and the longitudinal rib being welded on steel plate and cross rib, and bridge floor paving is provided with above steel plate
Fill layer.Longitudinal stiffener is parallel with girder, can be open ribs, can also be silent rib (as shown in Figure 1).Transverse stiffener
It is vertical with girder, in order to increase the overall stiffness and load transverse distribution of beam, the size for increasing cross rib is needed, such as can be in case
Diaphragm plate is set at a certain distance inside beam.In steel bridge deck, the rigidity according to its vertical and horizontal unit width section is
It is no to be equally divided into orthotropic plate and orthogonal same sex plate.Usually used is orthotropic plate, i.e., two orthogonal
On direction, the different plate of structural behaviour.
After use for many years, the problems such as steel bridge deck will appear poor durability, corrosion, cracking, fatigue, wherein fatigue
Problem is the main problem in steel bridge deck evolution.Orthotropic plate structure is complicated, weld seam is more, manufacturing process difficulty is high,
The residual stress that assembly precision requires high, welding to generate is high, the repeated action of the direct bearing load of floorings is added, at these
Under the influence of factor, orthotropic plate easy tos produce fatigue rupture.Under the repeated action of wheel weight, steel bridge deck becomes
Shape.Since longitudinal rib, cross rib are directly welded on floorings, they and weld seam will be deformed with the deformation of floorings.By
Big in the residual stress that welding generates, after one section of course under cyclic loading, weld seam peripheral region starts cracked, then splits
Line slowly extends, and last fast fatiguing is broken and destroys.Therefore, fatigue problem has become in Orthotropic Steel Bridge Deck and faces
Serious problems.
As shown in Figure 1, which show the schematic diagram of steel bridge deck in the prior art, there are following defects：
(1) the silent rib in Fig. 1 is with steel bridge deck when welding, and can only due to can not be from the interior welds of silent rib
Silent rib and steel bridge deck are welded by outside weld on the outside, therefore its weld strength is weak, is easy to cause the production of fatigue crack
It is raw；
(2) diaphragm plate in Fig. 1 is not directly to be welded with steel bridge deck, and only welded with silent rib, can be caused in this way
The generation of more weld seams, also the fatigue behaviour of this weld seam is also poor；
(3) diaphragm plate as shown in Figure 1 is the I-steel being laterally arranged, and is not provided with any ribbed stiffener thereon, or
Even if being provided with ribbed stiffener, and rectangular slab ribbed stiffener is set in the both sides constructivity of web, not according to the stress of diaphragm plate
The shape of performance targeted design ribbed stiffener, cannot give full play to its anti-fatigue performance；
(4) without other reinforcement measures after silent rib shown in FIG. 1 is welded with steel bridge deck so that silent rib and steel bridge deck
Whole fatigue behaviour it is bad, weld seam be easy therebetween grow and develop.
Therefore, a kind of anti-fatigue performance more preferably steel bridge deck is needed in the prior art, to solve in the prior art
State problem.In practice, fatigue destruction, needs to be grasped structural material under Repeated Loading to fatigue in order to prevent
Resistivity, i.e. fatigue strength.It usually takes the full scale model of real structure or reduces scale model, in specified load
Under according to certain loading frequency carry out fatigue test, it can be deduced that the pass between given applied stress σ and prerupture cycle-index N
System, referred to as S-N curves.According to S-N curves, in slightly smaller than a certain stress value σ0When, N will tend to be infinitely great, and structure will at this time
Fatigue rupture, σ will not occur0It is referred to as fatigue limit.
Invention content
The present invention provides a kind of antifatigue steel bridge deck, weld strength is high, stress performance is reasonable, anti-fatigue performance
It is excellent, defect in the prior art can be overcome well, and it is very big can so that the anti-fatigue performance of entire steel bridge deck obtains
Promotion.
Antifatigue steel bridge deck according to the present invention, including steel plate, the bridge deck pavement that is laid on above steel plate and weldering
The multiple silent shape longitudinal stiffeners being connected below steel plate are equipped with adhesive between bridge deck pavement and steel plate；The longitudinal direction adds
Strength rib is that isosceles trapezoid, two bevel edges are welded with steel plate, and short bottom edge is welded with two bevel edges.
Preferably, the transverse slat parallel with short bottom edge and steel plate be set in the inner space of isosceles trapezoid, the transverse slat with
The distance between steel plate and the ratio on the distance between the transverse slat and short bottom edge are 2S1/ (2S2+3S1), and S1 is isosceles trapezoid
Short bottom edge length, S2 be isosceles trapezoid long bottom edge length；
The longitudinal stiffener is arranged along the longitudinal direction interval of steel bridge, between adjacent longitudinal stiffener along the longitudinal direction
Space in be provided with the inverted T shaped transverse stiffener being welded in along steel plate transverse direction on steel plate, the lower flange of transverse stiffener
Less than the lower edge of longitudinal stiffener so that longitudinal stiffener can be placed in the web space of transverse stiffener；
Above and below the web both sides of transverse stiffener, be symmetrically arranged at intervals with 4 pieces of reinforcing plates, the reinforcing plate by
The bevel edge of parabolic shape between two mutually perpendicular right-angle sides and the endpoint for connecting two right-angle sides surrounds, symmetrical
Two pieces of reinforcing plates constitute complete parabolic shape；
All full penetration weld is used to connect between the longitudinal stiffener and steel plate, between the transverse stiffener and steel plate
It connects；
By epoxy adhesive, horizontal and vertical intersection is pasted onto steel plate and indulges carbon fibre reinforced composite respectively
To on the lower surface of ribbed stiffener.
Preferably, every piece of reinforcing plate is equipped with round hole；It is additionally provided between the web and steel plate of inverted T shaped transverse stiffener
L-type angle steel；The bridge deck pavement uses fibre reinforced asphalt concrete, is used between the bridge deck pavement and the steel plate
The epoxy adhesive mutually bonds.
According to the steel bridge deck of the application, there is following technical advantage：
(1) full penetration weld is used between longitudinal stiffener and steel plate, solving in the prior art can only shape on the outside
At the technological deficiency of inconel weld, weld strength height, excelling in fatigue property；
(2) by the way that longitudinal stiffener to be arranged along the longitudinal direction interval of steel bridge, and it is arranged laterally in the space at interval
Ribbed stiffener so that the weld seam between transverse stiffener and longitudinal stiffener is reduced, anti-fatigue performance improves, while in identical height
The load-carrying properties that transverse stiffener can be improved in degree space are conducive to the holistic resistant behavior and fatigue resistance that improve structure
Energy；
(3) by reinforcing constituting complete parabola by symmetrical two pieces be arranged in transverse stiffener web space
Shape, it is corresponding with the stress of structure and deformation characteristic as much as possible with this so that reinforcing plate can give full play to its mechanical property.
(4) on the lower surface in silent rib with steel bridge deck by binder it is horizontal and vertical intersect stickup be provided with carbon fiber
Dimension enhancing composite material, complete load and antifatigue system are formed with this.
(5) cloth is enhanced by using epoxy adhesive sticking carbon fiber special in the application so that the two can
Compatible deformation, and very strong cohesive force is formed between steel plate.Test result shows that the strong of structure can not only be greatlyd improve
Degree, but also the anti-fatigue performance of structure can be improved, stress amplitude is greatly reduced.
(6) by using fibre reinforced asphalt concrete special in the application as bridge deck pavement, while ring is utilized
Oxygen resinoid bond can not only be bonded in steel plate securely as the binder between bridge deck pavement and steel bridge deck
Surface, and since it is with excellent anti-fatigue performance, it is very big can so that the anti-fatigue performance of entire steel bridge deck obtains
Promotion.
Using the antifatigue steel bridge deck in the application, the load performance of agent structure can not only be improved, more can
Its anti-fatigue performance is effectively improved, application prospect is had a vast market.
Description of the drawings
Fig. 1 is the organigram of steel bridge deck in the prior art.
Fig. 2 is the organigram of the antifatigue steel bridge deck of the present invention.
Fig. 3 is the cross-sectional view of the antifatigue steel bridge deck of the present invention.
Fig. 4 is the upward view of antifatigue steel bridge deck shown in Fig. 2.
Fig. 5 is the schematic diagram of A-A sections in Fig. 4.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention
Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature mutually can arbitrarily combine.
As shown in Figures 2 and 3, antifatigue steel bridge deck according to the present invention includes steel plate 2, is laid on 2 top of steel plate
Bridge deck pavement 1 and the multiple silent shape longitudinal stiffeners 3 for being welded on 2 lower section of steel plate, set between bridge deck pavement 1 and steel plate 2
There is adhesive.Adhesive can select to use material well known in the prior art, repeat no more.Longitudinal stiffener 3 is isosceles
Trapezoidal, two bevel edges are welded with steel plate, and short bottom edge is welded with two bevel edges.Setting and short bottom in the inner space of isosceles trapezoid
The side transverse slat 4 parallel with steel plate, the distance between transverse slat 4 and steel plate 2 and the ratio on the distance between transverse slat 4 and short bottom edge are
2S1/ (2S2+3S1), S1 are the short bottom edge length of isosceles trapezoid, and S2 is the long bottom edge length of isosceles trapezoid.By the way that transverse slat is arranged
4, the inner space of inverted trapezoidal longitudinal stiffener is divided into different trapezoidal of upper and lower two the moment of inertias so that longitudinal stiffener 3
Rigidity and anti-fatigue performance are improved, especially the installation position of transverse slat, are even more considered the load-carrying properties of isosceles trapezoid, are made
It can play maximum supporting effect and anti-fatigue performance.Present inventor passes through countless experimental verifications, finally builds
The empirical equation as described above about transverse slat installation position is found, practice effect is very good.
Another mode is to make transverse slat 4 into riser, i.e., along the setting of the longitudinal direction of longitudinal stiffener 3 and steel plate 2
The shape of vertical riser, riser is consistent with the cross sectional shape of longitudinal stiffener 3.But pass through verification experimental verification, in identical steel plate
In the case of dosage, the bearing capacity and anti-fatigue performance of this kind of mode averagely reduce by 17% or so than the form of transverse slat.Therefore, exist
In the application, it is preferred to use transverse slat form as described above.
As shown in figure 5, the longitudinal direction of longitudinal stiffener 3 on antifatigue steel bridge deck according to the present invention along steel bridge
Interval setting.In the space between adjacent longitudinal stiffener 3 along the longitudinal direction, it is provided with and is welded in steel along steel plate transverse direction
Inverted T shaped transverse stiffener 5 on plate 2.The lower flange of transverse stiffener 5 is less than the lower edge of longitudinal stiffener 3 so that Zong Xiangjia
Strength rib 3 can be placed in the web space of transverse stiffener 5.Above and below the web both sides of transverse stiffener 5, symmetrically between
Every being provided with 4 pieces of reinforcing plates 6, every piece of reinforcing plate 6 is equipped with round hole, with most under the premise of having substantially no effect on load-carrying properties
Amount reduces dead load.Reinforcing plate 6 is by the parabolic between the endpoint of two right-angle sides of two mutually perpendicular right-angle sides and connection
Linear bevel edge surrounds.Symmetrical two pieces of reinforcing plates 6 constitute complete parabolic shape, with this as much as possible with structure by
Power and deformation characteristic are corresponding so that reinforcing plate can give full play to its mechanical property.The web of inverted T shaped transverse stiffener 5 and
L-type angle steel 8 is additionally provided between steel plate 2, with the intensity and anti-fatigue performance of the structure of raising.In the present invention, by will be longitudinal
Ribbed stiffener is arranged along the longitudinal direction interval of steel bridge, and transverse stiffener is arranged in the space at interval so that transverse stiffener
Weld seam between longitudinal stiffener is reduced, anti-fatigue performance improves, while can improve transverse direction in identical height space
The load-carrying properties of ribbed stiffener are conducive to the holistic resistant behavior and anti-fatigue performance that improve structure.
It is lacked to solve technology that is existing in the prior art, can not being welded on steel plate inside longitudinal stiffener
It falls into, all full penetration is used to weld between the longitudinal stiffener 3 and steel plate 2 in the present invention, even between transverse stiffener 5 and steel plate 2
Seam connection.Preferably, the solder flux of full penetration weld by silica, manganese oxide, calcium oxide, magnesia, aluminium oxide, calcirm-fluoride,
Iron oxide, titanium dioxide are 1 according to mass ratio：0.62：0.15：0.2：0.51：0.42：0.06：0.03 is mixed.The present invention
Full penetration weld use wire submerged arc Welding, so that welding efficiency is high, fusion penetration is big, welding quality stable using above-mentioned solder flux
Reliably, it can well be combined with base material metal and good appearance.The smelting type welding flux that the present invention uses is needed in 240-250
It could be used after DEG C baking 1-1.5 hours, to remove moisture therein.Under equivalent assay conditions, welded using above-mentioned full penetration
Seam can by its weld strength compared with the existing technology in common weld seam at least improve 25%, have fabulous welding performance.
As shown in figure 4, in order to enhance the load-carrying properties and anti-fatigue performance of longitudinal stiffener and steel bridge deck, it can be vertical
Composite material (CFRP) is enhanced by binder sticking carbon fiber on the lower surface of ribbed stiffener and steel plate.CFRP is by carbon fiber
With a kind of composite material made of matrix resin, common form is band-like, cloth-like and sheet etc..The present invention is increased using carbon fiber
The form of strong cloth.CFRP have good anti-fatigue performance, connect with agent structure by binder, belong to the power transmission of face border,
Load transmission is uniform, stress concentration degree is low, can effectively prevent crackle and that destroys continues to extend, substantially prolong structure
Service life.On the one hand, CFRP can undertake fractional load, to reduce the stress level of main structure body, the base of toughness
Body will slow down or terminate the crackle formed by fibrous fracture and carried to reduce the Fatigue Stress Amplitude of agent structure force part
The fatigue life of high agent structure.On the other hand, CFRP is pasted on the surface at agent structure position by binder, can reduce corrosion
Erosion of the property medium to Steel material, plays good anti-corrosion effect, avoids the generation of agent structure fatigue rupture.At this point, influencing
The factor of fatigue strength is structure detail, cycle-index, maximum stress and stress ratio.Stress ratio ρ refers to absolute value minimum and most
The ratio between big stress (tensile stress is just that compression be negative), the maximum tension stress and minimum tensile stress in each Cyclic Stress or pressure
The difference of stress is known as stress amplitude Δ σ, represents cycle specificity.
As shown in figure 4, the carbon fibre reinforced composite in the present invention is viscous by the horizontal and vertical intersection of binder respectively
It is attached on the lower surface of steel plate and longitudinal stiffener, complete load and antifatigue system is formed with this.
The work progress CFRP of the present invention pasted on bonding surface is described below：
(1) first the impurity such as oxide layer and the iron rust on surface are removed, then handed over fine sandpaper with coarse sandpaper polishing region to be pasted
Fork is polished the region, is caused certain surface roughness, is ensured the validity pasted, the direction of the CFRP of polishing scratch direction and stickup
At about 45° angle, component surface processing should carry out within the 4-5 hours before sticking construction.
(2) it cleans polishing region with cleaning agent and dries.
(3) it configures special epoxy adhesive and stirs evenly.
Preferably, epoxy adhesive according to the present invention is 4.5 according to mass ratio by component A and B component:1 mixing
It forms, wherein component A is 1 according to mass ratio by epoxy resin, polyacrylamide gel, waterglass and butanediol：0.16：0.2：
0.16 be uniformly mixed be made；B component is pressed by maleic anhydride, diaminodiphenyl-methane, carbon black, niter cake and silane coupling agent
It is 1 according to mass ratio：2.3：0.1：0.24：0.33 be uniformly mixed be made.When configuring component A, first epoxy resin and waterglass are pressed
It is uniformly mixed and stirs 30 minutes according to above-mentioned mass ratio, be then heated to 72 DEG C or more, sequentially add polyacrylamide gel
With butanediol and stir evenly, kept the temperature after component A is heated to 90 DEG C 1-1.5 hours it is for use.Then, B is added in a kettle
Component and after being heated to 120 DEG C, pours into for use component A and is uniformly mixed, keeping the temperature 2-3 hours at 80 DEG C or more keeps it fully anti-
It answers, can be used after being cooled to room temperature.
The adhesive of SCR series is usually used in the prior art, and that CFRP cloth or CFRP plates pasted reinforcing face is enterprising
Row reinforce, optional adhesive range is relatively narrow, limited capacity, be especially adapted for use in the adhesive being pasted onto on steel construction more added with
Limit.Using the above-mentioned epoxy adhesive of the application, carbon fibre reinforced cloth can be more effectively pasted onto to the surface of steel,
To overcome the problems, such as to perplex in industry for a long time in the prior art.Adhesive in compared with the existing technology, the application's
Adhesion strength can be improved at least 20% by epoxy adhesive, and the raising of the anti-fatigue performance of steel construction is played to pass
Critical effect.
(4) epoxy adhesive configured is applied to surface to be pasted, waits for 2 minutes, then pastes CFRP
To adhesive surface；Preferably, bondline thickness control is in 1.0-1.2mm.
(5) isolation film is covered, pasting the CFRP on adhesive surface using rolling device roll-in makes it fully be compacted and dry in the air
It is dry.
Fiber reinforcement cloth is pasted thereon by epoxy adhesive in the adhesive surface of steel construction so that steel plate, fibre
The material of dimension enhancing three kinds of property of cloth and epoxy adhesive can form composite component, the premise that overall performance improves
It is that the stress that carbon fibre composite is transmitted by binder constitutes entirety, and compatible deformation, common stress with steel plate.Thus
As it can be seen that the mechanical property of used binder is extremely important, must be isotropic, solidification temperature is wanted and environment temperature
Or temperature in use it is identical and also cure after want can and steel plate cooperative transformation, with steel plate have very strong cohesive force.
Adhesive property can be greatlyd improve using above-mentioned special epoxy adhesive, to greatly improve fatigability
Energy.In order to carry out the comparison of antifatigue effect, applicant uses the above-mentioned of known seven kinds of adhesive in the market and the application
Binder has carried out the performance test under equal conditions, and reduce the anti-fatigue test of scale model, and experimental result is such as
Shown in following table：
The performance test contrast table of the binder and existing adhesive of 1 the application of table
2 steel to steel of table pastes tensile and shear property test comparison table
In order to test the Fatigue Consolidation effect of CFRP, while in view of factors, the applicants such as experimental cost and complexity press
According to certain engineering project 1:The diminution models of 10 ratios is chosen and is not had to binder and the application that CFRP is reinforced, used number for 1
Binder carries out the antifatigue comparisons reinforced three kinds of situations and carry out fatigue test of CFRP, and experimental data is following (if without special theory
Bright, other experiment conditions are identical)：
3 antifatigue experimental result contrast table of table
| Experiment condition | Nominal stress width (MPa) | Fatigue life (× 105) |
| It is reinforced without CFRP | 176 | 3.1 |
| Use the binder-reinforced numbered as 1 | 117 | 8.2 |
| Using the binder-reinforced of the application | 82 | 15.3 |
Although it should be noted that using CFRP reinforce and repair Plane Steel be it is existing in the prior art,
But as in the application in this way, being pasted with transverse direction by binder in the bottom of the steel bridge deck equipped with inverted trapezoidal longitudinal stiffener
With the carbon fibre reinforced composite of crossed longitudinally setting, the anti-fatigue performance of steel bridge deck is improved with this, in the prior art
In do not occurred.What is more, the setting spaced apart of longitudinal stiffener and transverse stiffener in the application, also can be very
The earth improves its anti-fatigue performance.Therefore, using the antifatigue steel bridge deck in the application, agent structure can not only be improved
Load performance, can more effectively improve its anti-fatigue performance, have a vast market application prospect.
It is highly preferred that the fibre reinforced asphalt coagulation of excelling in fatigue property may be used in the bridge deck pavement in the application
Soil.For common bituminous concrete, the fiber in fibre reinforced asphalt concrete can fully absorb pitch, to
The increase of pitch oil film dosage, pitch oil film is set to thicken, to reinforce cohesive force of the bituminous concrete under macrovoid, enhancing is durable
Property.Fiber can also improve the cohesive force of pitch, enhance the adhesiveness of pitch and mineral, while web is as the second continuous phase
The globality of maintenance system is remained able to when pitch destroys.In addition, fiber can enhance the withdrawal resistance to aggregate particle, ensure
The globality of bituminous paving is not easy loosely.It can be seen that can be reduced using fibre reinforced asphalt concrete or delay fatigue is split
The appearance of seam, the fatigue life for improving bituminous paving.
Stone that the fibre reinforced asphalt concrete of the application can be 3-6mm by SBS modified pitch, grain size, length are
The carbon fiber of 5-10cm, epoxy resin, polyamide (catalyst), carboxylic acid anhydrides (water-reducing agent), Petropols (tackifier) are according to matter
Amount is than being 1：1.5：0.23：0.62：0.11：0.08：0.31 be uniformly mixed be made.It prepares and construction method is：Pitch is heated
It is heated to 125 DEG C or more to 140 DEG C or more, by epoxy resin, the two is sequentially added to Petropols, polyamide after mixing
And carboxylic acid anhydrides；Then stone and carbon fiber are put into wherein and are stirred evenly, pave at a temperature of 145-148 DEG C be coated with it is viscous
On the steel plate for tying agent.
Using the above-mentioned fibre reinforced concrete in the application, the binder that can be not only adapted to by performance is secured
Ground is bonded in surface of steel plate, and since it is with excellent anti-fatigue performance, can make the antifatigue of entire steel bridge deck
Performance is greatly improved.
Although disclosed herein embodiment it is as above, content only to facilitate understand the present invention and use
Embodiment is not limited to the present invention.Any those skilled in the art to which this invention pertains are not departing from the present invention
Under the premise of disclosed spirit and scope, any modification and change can be made in the implementing form and in details, but this
The scope of patent protection of invention, still should be subject to the scope of the claims as defined in the appended claims.
Claims (5)
1. a kind of antifatigue steel bridge deck, including steel plate, the bridge deck pavement that is laid on above steel plate and it is welded under steel plate
Multiple silent shape longitudinal stiffeners of side are equipped with adhesive between bridge deck pavement and steel plate；It is characterized in that：
The longitudinal stiffener is that isosceles trapezoid, two bevel edges are welded with steel plate, and short bottom edge is welded with two bevel edges.
2. antifatigue steel bridge deck according to claim 1, it is characterised in that：
The transverse slat parallel with short bottom edge and steel plate is set in the inner space of isosceles trapezoid, between the transverse slat and steel plate away from
From being 2S1/ (2S2+3S1) with the ratio on the distance between the transverse slat and short bottom edge, S1 is the short bottom edge length of isosceles trapezoid,
S2 is the long bottom edge length of isosceles trapezoid；
The longitudinal stiffener is arranged along the longitudinal direction interval of steel bridge, the sky between adjacent longitudinal stiffener along the longitudinal direction
Interior to be provided with the inverted T shaped transverse stiffener being welded in along steel plate transverse direction on steel plate, the lower flange of transverse stiffener is less than
The lower edge of longitudinal stiffener so that longitudinal stiffener can be placed in the web space of transverse stiffener；
Above and below the web both sides of transverse stiffener, 4 pieces of reinforcing plates are symmetrically arranged at intervals with, the reinforcing plate is by two
The bevel edge of parabolic shape between mutually perpendicular right-angle side and the endpoint for connecting two right-angle sides surrounds, symmetrical two pieces
Reinforcing plate constitutes complete parabolic shape；
All full penetration weld is used to connect between the longitudinal stiffener and steel plate, between the transverse stiffener and steel plate；
By epoxy adhesive, horizontal and vertical intersection is pasted onto steel plate to carbon fibre reinforced composite respectively and longitudinal direction adds
On the lower surface of strength rib.
3. steel bridge deck according to claim 2, it is characterised in that：Every piece of reinforcing plate is equipped with round hole.
4. steel bridge deck according to claim 2, it is characterised in that：Between the web and steel plate of inverted T shaped transverse stiffener
It is additionally provided with L-type angle steel.
5. according to the steel bridge deck described in any one of claim 1-4, it is characterised in that：The bridge deck pavement uses fiber
Enhance bituminous concrete, is mutually bonded using the epoxy adhesive between the bridge deck pavement and the steel plate.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281248A (en) * | 2018-10-31 | 2019-01-29 | 西南交通大学 | The high fatigue resistance Orthotropic Steel Bridge Deck of full automatic welding |
| CN110184951A (en) * | 2019-05-23 | 2019-08-30 | 长沙理工大学 | Combined bridge deck structure and reinforced construction method with direction across bridge reinforcing strip |
| CN110670725A (en) * | 2019-09-09 | 2020-01-10 | 清华大学 | Steel member assembly with fatigue strength and machining method |
| CN112376445A (en) * | 2020-11-23 | 2021-02-19 | 同济大学 | Steel bridge deck plate U rib butt joint fatigue reinforcing structure and method based on bonding |
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| CN106087739A (en) * | 2016-06-16 | 2016-11-09 | 河海大学 | A kind of combination U rib shaped steel floorings and preparation method thereof |
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| CN109281248A (en) * | 2018-10-31 | 2019-01-29 | 西南交通大学 | The high fatigue resistance Orthotropic Steel Bridge Deck of full automatic welding |
| CN110184951A (en) * | 2019-05-23 | 2019-08-30 | 长沙理工大学 | Combined bridge deck structure and reinforced construction method with direction across bridge reinforcing strip |
| CN110670725A (en) * | 2019-09-09 | 2020-01-10 | 清华大学 | Steel member assembly with fatigue strength and machining method |
| CN112376445A (en) * | 2020-11-23 | 2021-02-19 | 同济大学 | Steel bridge deck plate U rib butt joint fatigue reinforcing structure and method based on bonding |
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