CN109371802A - A kind of continuous variable thickness Wavelike steel webplate - Google Patents
A kind of continuous variable thickness Wavelike steel webplate Download PDFInfo
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- CN109371802A CN109371802A CN201811452958.9A CN201811452958A CN109371802A CN 109371802 A CN109371802 A CN 109371802A CN 201811452958 A CN201811452958 A CN 201811452958A CN 109371802 A CN109371802 A CN 109371802A
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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Abstract
The invention discloses a kind of continuous variable thickness Wavelike steel webplates；The present invention includes multiple compositing monomers, multiple compositing monomers are in turn connected to form steel web body, each compositing monomer includes lower straight-plate, first hang plate, upper straight-plate and the second hang plate, horizontal alignment is arranged between lower straight-plate and upper straight-plate, first hang plate is arranged between lower straight-plate and upper straight-plate, the low side of first hang plate is connected with one end of lower straight-plate, one end of the high-end and upper straight-plate of first hang plate is connected, the other end of upper straight-plate is connected with the high-end of the second hang plate, the low side of the second hang plate in the other end of lower straight-plate in each compositing monomer another compositing monomer adjacent thereto is connected, the thickness of lower straight-plate in each compositing monomer successively successively decreases along the length direction of steel web body, the thickness of upper straight-plate in each compositing monomer successively successively decreases along the length direction of steel web body 9.Present invention is mainly used for technical field of bridge engineering.
Description
Technical field
The present invention relates to a kind of continuous variable thickness Wavelike steel webplates, belong to technical field of bridge engineering.
Background technique
Prestressed Concrete Box-Girder Bridges with Corrugated Steel Webs appears in France earliest, and France had once built several in a creative way in the eighties in last century
The representational Prestressed Concrete Box-Girder Bridges with Corrugated Steel Webs of seat, then, such bridge structure is greatly developed in Japan.State
Interior First Wavelike steel webplate PC box beam is established in 2005, although Wavelike steel webplate PC box beam China development starting compared with
Evening, still, based on Prestressed Concrete Box-Girder Bridges with Corrugated Steel Webs structural behaviour is superior, short construction period, it is handsome in appearance the features such as, therefore, closely
For over ten years, application of the Prestressed Concrete Box-Girder Bridges with Corrugated Steel Webs in China is more extensive, according to incompletely statistics, ends 2018, domestic
Built Prestressed Concrete Box-Girder Bridges with Corrugated Steel Webs has reached over one hundred seat, wherein still not including proposed and in the Wavelike steel webplate PC case built
Beam bridge structure.Prestressed Concrete Box-Girder Bridges with Corrugated Steel Webs can realize assembled production and installation, material recycling rate of waterused can reach 90% with
On, meet the theory requirement of sustainable development, is the ideal structure type of building security traffic, green traffic.
It needs to realize the whole of Wavelike steel webplate by the on-gauge plate width splicing of different-thickness between existing Wavelike steel webplate
Body thickness design.When calibrated bolck segmental length is larger, especially in the lesser span centre section of deck-molding, thickness design requirement
Spliced using the on-gauge plate width of different-thickness, by taking 3 meters of deck-molding, 4.8 meters of calibrated bolck segmental length as an example, according to equal thickness waveform
Steel web, when steel plate thickness is within the scope of 10mm~30mm, equal thickness Wavelike steel webplate can be processed in factory by clod wash
Disposable to complete production, high in machining efficiency and teaching and administrative staff's precision is secure.Under the conditions of same, when using steel plate thickness design,
In same standard segment, thickness of every change will at least increase the splicing seams of an on-gauge plate width.Currently, in engineering often
There are mainly two types of splicing seams: welding splicing is connected with high-strength bolt.The welding residual stress that welding generates, which easily causes, answers
Power corrosion, weld seam internal flaw are difficult to be found, and the anti-fatigue performance of weld seam internal flaw formal incidence Wavelike steel webplate
Key factor, in addition, welding can increase the geometrical defect of steel plate to reduce the anti-flexion capabilities in part of Wavelike steel webplate.Spiral shell
Bolt tapping can generate biggish stress and concentrate, and loose phenomenon is also easy to produce under dynamic loads effect, in addition, positioning and the ruler of screw hole
It is very little to be required by higher technique.Therefore, for existing technique, the plate specification plate width of different-thickness splices, and always can not
Avoid negative effect brought by steel plate splicing.
Summary of the invention:
In view of the above-mentioned problems, the invention discloses a kind of continuous variable thickness Wavelike steel webplates.
The technical scheme adopted by the invention is as follows:
A kind of continuous variable thickness Wavelike steel webplate, it includes multiple compositing monomers, and multiple compositing monomers are in turn connected to form
Steel web body, each compositing monomer include lower straight-plate, the first hang plate, upper straight-plate and the second hang plate, the lower straight-plate, first
Hang plate, upper straight-plate and the second hang plate, which are fixedly connected sequentially, is made as one, and horizontal alignment is arranged between lower straight-plate and upper straight-plate,
First hang plate is arranged between lower straight-plate and upper straight-plate, and the low side of the first hang plate is connected with one end of lower straight-plate, and first
One end of the high-end and upper straight-plate of hang plate is connected, and the other end of upper straight-plate is connected with the high-end of the second hang plate, each
The low side of the second hang plate in the other end of lower straight-plate in compositing monomer another compositing monomer adjacent thereto is connected,
The thickness of lower straight-plate in each compositing monomer successively successively decreases along the length direction of steel web body, upper straight in each compositing monomer
The thickness of plate successively successively decreases along the length direction of steel web body.
As a preferred solution: the plate face of multiple lower straight-plates is in same level.
As a preferred solution: the plate face of multiple upper straight-plates is on same inclined surface.
As a preferred solution: the angle formed between lower straight-plate and the first hang plate is bending angle α, the value of bending angle α
Range is 135 °~160 °.
As a preferred solution: the corresponding crooked process radius of bending angle α is R, R is greater than the thickness of 15 times of bending part and less than 20
The thickness of bending part again.
The invention has the benefit that
One, the present invention avoids welding from operating the local strength that can be generated residual stress and influence steel plate, multiple compositing monomers
The steel web body being in turn connected to form has globality outstanding and anti-fatigue performance.Overall structure no-welding-seam, to have equal
Even and stable stress performance.
Two, using effect is more flexible and convenient in the construction process for structure of the invention.Since steel web body is continuous
Therefore Varying-thickness is not limited in standard segmental length by execution conditions, steel plate can realize that thickness is continuously adjusted in standard segmental length
Whole, designer is not influenced in design by standard segmental length limitation, so that design scheme is more flexible, steel plate continuous variable thickness
Design while the mutation for avoiding web shear resistance, are conducive to improvement system entirety stress.
Three, the present invention processes simpler, material and more saves.Compared with continuous variable thickness in standard segment, saving of the present invention
Steel.Meanwhile in the processing and making process of steel web body, the present invention is using variable-thickness steel plate as raw material, continuous Varying-thickness
Strip can be used continuously, and with the reduction of steel web design shear, web thickness is gradually by thick thinning, corresponding adjacent standard
Segment uses the adjacent area of Varying Thickness Plates band.The operation for exchanging different strips is saved, material is saved.
Detailed description of the invention:
Detailed description will be given by the following detailed implementation and drawings by the present invention for ease of explanation,.
Fig. 1 is the schematic cross-section of variable-thickness steel plate 8；
Fig. 2 is the schematic view of the front view of compositing monomer；
Fig. 3 is schematic view of the front view of the invention；
Fig. 4 is schematic perspective view of the invention；
Fig. 5 is the relative position schematic diagram of bending angle α and crooked process radius R；
Fig. 6 is that variable-thickness steel plate 8 is shown by the process that pressing mold mode forms steel web body 9 under the first Varying-thickness direction
It is intended to；
Fig. 7 is that variable-thickness steel plate 8 is shown by the process that pressing mold mode forms steel web body 9 under second of Varying-thickness direction
It is intended to；
Fig. 8 is that different-thickness welding Wavelike steel webplate is fixed in bottom end, and the stress shape under top end face load action simultaneously
State schematic diagram；
Fig. 9 is that the present invention is fixed in bottom end, and the stress state schematic diagram under top end face load action simultaneously；
Figure 10 is that different-thickness welding Wavelike steel webplate is fixed in two sides, and the stress shape under top end face load action simultaneously
State schematic diagram；
Figure 11 is that the present invention is fixed in two sides, and the stress state schematic diagram under top end face load action simultaneously.
Specific embodiment:
In order to make the objectives, technical solutions and advantages of the present invention clearer, below by shown in the accompanying drawings specific
Embodiment describes the present invention.However, it should be understood that these descriptions are merely illustrative, and it is not intended to limit model of the invention
It encloses.In addition, in the following description, descriptions of well-known structures and technologies are omitted, it is of the invention to avoid unnecessarily obscuring
Concept.
Specific embodiment 1: as shown in Figure 1, the raw material of present embodiment be variable-thickness steel plate 8, be stripe board
Body, one side are inclined surface, and another side is to face directly, and variable-thickness steel plate 8 is rolled by factory, and thickness change range is
8~40mm, it is 15mm that the steel plate thickness change rate upper limit of variable-thickness steel plate 8, which is every linear meter(lin.m.) steel plate thickness difference,.T is Varying-thickness steel
The thickness of plate 8, t1 are the thickness of right end slab section in variable-thickness steel plate 8, and t2 is the thickness of left end thin plate section in variable-thickness steel plate 8
Degree, variable-thickness steel plate 8 and change rate fully meet the demand of bridge steel plate.
As shown in Figure 2, Figure 3 and Figure 4, present embodiment is to form steel web body 9 using the processing and manufacturing of variable-thickness steel plate 8,
Steel web body 9 is a kind of Wavelike steel webplate, it includes multiple compositing monomers, and each compositing monomer includes that lower straight-plate 1, first tilts
Plate 2, upper straight-plate 3 and the second hang plate 4, the lower straight-plate 1, the first hang plate 2, upper straight-plate 3 and the second hang plate 4 are successively fixed
Connection is made as one, and horizontal alignment is arranged between lower straight-plate 1 and upper straight-plate 3, and the setting of the first hang plate 2 is in lower straight-plate 1 and upper straight
Between plate 3, the low side of the first hang plate 2 is connected with one end of lower straight-plate 1, and the one of the high-end and upper straight-plate 3 of the first hang plate 2
End is connected, and the other end of upper straight-plate 3 is connected with the second the high-end of hang plate 4, the lower straight-plate 1 in each compositing monomer it is another
The low side of the second hang plate 4 in another compositing monomer adjacent thereto of one end is connected, lower straight in each compositing monomer
The thickness of plate 1 successively successively decreases along the length direction of steel web body 9, and the thickness of the upper straight-plate 3 in each compositing monomer is along steel web
The length direction of body 9 successively successively decreases.
Further, when the processing and manufacturing of variable-thickness steel plate 8 forms steel web body 9, multiple lower straight-plates 1 in steel web body 9
Plate face be in same level.
Further, when the processing and manufacturing of variable-thickness steel plate 8 forms steel web body 9, multiple upper straight-plates 3 in steel web body 9
Plate face be on same inclined surface.Variable-thickness steel plate 8 is Varying-thickness Wavelike steel webplate.
As shown in figure 5, being connected between lower straight-plate 1 and the first hang plate 2 by bending segment, lower straight-plate 1 and the first hang plate 2
Between the angle that is formed be bending angle α, the value range of bending angle α is 135 °~160 °.
Further, the corresponding crooked process radius of bending angle α is R, and crooked process radius R is not less than 15 times of bending part thickness, together
When bending part thickness no more than 20 times.
Straight panel section and tilted plate section are alternately present and are carried out excessively between straight panel section and tilted plate section by bending segment 6.Wherein, curved
Trisection 6 is folded plate body, its own angle formed is bending angle α, bending angle α corresponding crooked process radius R, bending angle α and bending
Radius R is the shape of two parameter co- controlling bending segments 6.The value range of bending angle α and the value range of crooked process radius R
It is to be obtained by multiple sampling test.
Variable-thickness steel plate 8 is formed by continuous mould pressing, realizes steel web while guaranteeing steel web 9 thickness change of body
The continuity and globality of body 9, when avoiding using equal thickness steel plate, the splicing in Varying-thickness processing is connected, based on whole change
The continous way of thickness steel plate 8 is molded, and ensure that full wafer steel web part does not occur vertical weld seam, improves the anti-of Wavelike steel webplate
Ability is cut, the anti-fatigue performance of steel web is improved.
As shown in fig. 6, variable-thickness steel plate 8 carries out thickness design along its own length direction according to design requirement, work as steel
When 9 height of web body is less than 3.6 meters, variable-thickness steel plate 8 can carry out Varying-thickness rolling, and steel web body 9 along length direction
Then pressing mold is carried out along board width direction.
As shown in fig. 7, variable-thickness steel plate 8 carries out thickness design along its own width direction according to design requirement, work as steel
When 9 height of web body is greater than 3.6 meters, Varying-thickness rolling can be carried out along 8 width direction of variable-thickness steel plate, and Wavelike steel webplate then edge
Plate length direction carries out pressing mold, and therefore, steel web body 9 rolls flexibly, can satisfy common engineering demand.Such setting can prop up
Hold that plate is long, plate wide both direction Varying-thickness rolling, it is flexible in application.3.6 meters of maximums for current machine models common on the market
Rolling width.
Specific embodiment 2: as shown in Figure 8 and Figure 9, sample of the invention and existing different-thickness are welded waveform steel
Web carries out stress comparative analysis, wherein be restrained end along the antinode board bottom end in Wavelike steel webplate waveform convertion direction, and waveform
The antinode plate top in steel web waveform convertion direction is further applied load as the equally distributed area load of steel plate thickness direction, value
For 1kN/m2, antinode plate gauge lattice are 1000 types common in engineering.
As shown in figure 8, the model of different-thickness welding Wavelike steel webplate is by with a thickness of 16mm and with a thickness of two kinds of 22mm
Steel web splice forms, splicing welding joint be Fig. 8 in dotted line position, from stress diagram as can be seen that weld seam near Stress Map, face
Color distributing homogeneity is poor, that is, depth degree is not uniform enough in Stress Map near weld seam, therefore, changes in steel plate thickness
Place, nearby stress concentration phenomenon is more obvious for weld seam.
As shown in figure 9, the instance model of steel web body 9 is thickeing to 22mm even variation with a thickness of 16mm in the present invention
Spend Wavelike steel webplate, thickness change direction is as shown by arrows in figure, stress and constraint operating condition and Fig. 8 in different-thickness weld waveform
The model of steel web is identical, as can be seen that distribution of color is uniform from Stress Map, that is, in the neighbouring Stress Map of weld seam deeply
Shallow degree is uniform, to illustrate the whole stress of steel web body 9 of the invention more evenly, shows without apparent stress concentration.
The stress complexity for considering Wavelike steel webplate, under conditions of analysis model is constant, Figure 10 and Figure 11 compare to
Go out two sides to fix, under top end face load action, different-thickness welds Wavelike steel webplate and Varying-thickness Wavelike steel webplate stress pair
Compare process.After changing constraint, antinode plate is primarily subjected to the shearing along waveform direction, at this point, two kinds of thickness steel of Figure 10 model clock
At web splice, Stress Map has apparent cut-off rule, and the position of cut-off rule is dotted line position in Figure 10, as shown in figure 11, this
The phantom thicknesses of steel web body 9 are uniform in invention, and stress distribution is then more uniform.
By the force analysis of Fig. 8, Fig. 9, Figure 10 and Figure 11, it can be seen that Wavelike steel webplate both direction in bearing plane
Shearing when, the stress condition of steel web body 9 is more reasonable in the present invention, and the existing steel being welded by different-thickness steel plate
Web, in the commissure of steel plate thickness variation, there are stress concentrations to show, and weak link is easily formed in use, especially in vehicle
Under the dynamic loadings such as load, it is easier to fatigue rupture occur.Therefore, steel web body 9 of the invention has better mechanics
Performance, so that present invention application is made to be not limited to bridge structure, it can also in tunnel, underground lining cutting or other correlation engineering fields
To use.Therefore, the abdomen plate class member researched and developed based on variable-thickness steel plate 8, belongs to the scope of protection of the patent of the present invention.This implementation
The unmentioned structure of other in mode and connection relationship are same as the specific embodiment one.
Claims (5)
1. a kind of continuous variable thickness Wavelike steel webplate, it is characterised in that: it includes multiple compositing monomers, and multiple compositing monomers are successively
Connection forms steel web body (9), and each compositing monomer includes that lower straight-plate (1), the first hang plate (2), upper straight-plate (3) and second incline
Inclined plate (4), the lower straight-plate (1), the first hang plate (2), upper straight-plate (3) and the second hang plate (4) are fixedly connected sequentially and are made as
One, between lower straight-plate (1) and upper straight-plate (3) horizontal alignment be arranged, the first hang plate (2) setting lower straight-plate (1) and it is upper directly
Between plate (3), the low side of the first hang plate (2) is connected with one end of lower straight-plate (1), the first hang plate (2) it is high-end with it is upper
One end of straight panel (3) is connected, the other end of upper straight-plate (3) and high-end being connected of the second hang plate (4), each compositing monomer
In lower straight-plate (1) the other end another compositing monomer adjacent thereto in the low side of the second hang plate (4) be connected, often
The thickness of lower straight-plate (1) in a compositing monomer successively successively decreases along the length direction of steel web body (9), in each compositing monomer
The thickness of upper straight-plate (3) successively successively decreases along the length direction of steel web body (9).
2. a kind of continuous variable thickness Wavelike steel webplate according to claim 1, it is characterised in that: multiple lower straight-plates (1)
Plate face is in same level.
3. a kind of continuous variable thickness Wavelike steel webplate according to claim 1 or 2, it is characterised in that: multiple upper straight-plates (3)
Plate face be on same inclined surface.
4. a kind of continuous variable thickness Wavelike steel webplate according to claim 1, it is characterised in that: each lower straight-plate (1)
Bending part is formed between the low side of end the second hang plate (4) adjacent thereto, between lower straight-plate (1) and the first hang plate (2)
The angle of formation is bending angle α, and the value range of bending angle α is 135 °~160 °.
5. a kind of continuous variable thickness Wavelike steel webplate according to claim 4, it is characterised in that: bending angle α is corresponding curved
Diameter is R, the thickness of bending part of the R greater than 15 times and the thickness of the bending part less than 20 times by half.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811452958.9A CN109371802B (en) | 2018-11-30 | 2018-11-30 | Continuous variable-thickness corrugated steel web |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811452958.9A CN109371802B (en) | 2018-11-30 | 2018-11-30 | Continuous variable-thickness corrugated steel web |
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| Publication Number | Publication Date |
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| CN109371802A true CN109371802A (en) | 2019-02-22 |
| CN109371802B CN109371802B (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811452958.9A Active CN109371802B (en) | 2018-11-30 | 2018-11-30 | Continuous variable-thickness corrugated steel web |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116227266A (en) * | 2022-12-21 | 2023-06-06 | 广西北投公路建设投资集团有限公司 | Determination method of buckling mode of corrugated steel web and calculation method of buckling stress |
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| CN109371802B (en) | 2020-07-07 |
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