CN111519528A - Orthotropic steel bridge deck - Google Patents
Orthotropic steel bridge deck Download PDFInfo
- Publication number
- CN111519528A CN111519528A CN202010493193.4A CN202010493193A CN111519528A CN 111519528 A CN111519528 A CN 111519528A CN 202010493193 A CN202010493193 A CN 202010493193A CN 111519528 A CN111519528 A CN 111519528A
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- CN
- China
- Prior art keywords
- longitudinal
- stiffening rib
- bridge deck
- web
- orthotropic steel
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- 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.)
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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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
Abstract
The invention relates to the technical field of bridge engineering, in particular to an orthotropic steel bridge deck, which comprises: a plate body; the web plates are arranged on the lower surface of the plate body along the width direction of the plate body; first vertical stiffening rib and the vertical stiffening rib of second, it is a pair of first vertical stiffening rib follows the width direction of plate body is established respectively the relative both sides of web, the vertical stiffening rib of second is located adjacent two a pair between the web between the first vertical stiffening rib, just the height of first vertical stiffening rib is greater than the height of the vertical stiffening rib of second. The orthotropic steel bridge deck slab provided by the invention can reduce the stress concentration at the web plate position and avoid cracks generated in the bridge deck pavement.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to an orthotropic steel bridge deck.
Background
The orthotropic steel bridge deck is formed by connecting a steel top plate, a longitudinal stiffening rib and a diaphragm plate through welding seams, has a series of advantages of light dead weight, large ultimate bearing capacity, short construction period and the like, and is widely applied to large-span bridges. The orthotropic steel bridge deck is paved on an orthotropic steel bridge deck, which is different from a common road asphalt concrete pavement. The orthotropic steel bridge deck is high in flexibility, is influenced by natural factors such as travelling load, temperature change, wind load, earthquake and the like, is particularly influenced by structural deformation of the bridge, is more complex in stress and deformation compared with a highway pavement, particularly has larger and more complex local deformation of the steel bridge deck under the action of heavy vehicle load, and has the problems that the stress of a pavement layer is more complex and more unfavorable, particularly, the stress concentration effect at the position of a web is more obvious, and the longitudinal crack is more likely to occur in the pavement of the bridge deck.
Disclosure of Invention
Therefore, the invention aims to overcome the defects that the stress concentration effect of the web plate position of the orthotropic steel bridge deck slab in the prior art is obvious and cracks are easily generated in bridge deck pavement, thereby providing the orthotropic steel bridge deck slab which can reduce the stress concentration of the web plate position and avoid the cracks generated in the bridge deck pavement.
In order to solve the above technical problems, the present invention provides an orthotropic steel deck plate, comprising:
a plate body;
the web plates are arranged on the lower surface of the plate body along the width direction of the plate body;
first vertical stiffening rib and the vertical stiffening rib of second, it is a pair of first vertical stiffening rib follows the width direction of plate body is established respectively the relative both sides of web, the vertical stiffening rib of second is located adjacent two a pair between the web between the first vertical stiffening rib, just the height of first vertical stiffening rib is greater than the height of the vertical stiffening rib of second.
And the first longitudinal stiffening rib and the second longitudinal stiffening rib are U-shaped stiffening ribs.
The orthotropic steel bridge deck plate is characterized in that the distance between the first longitudinal stiffening rib and the web plate is smaller than the distance between two adjacent second longitudinal stiffening ribs.
Orthotropic steel decking, still include to follow the width direction of plate body is located the longeron in the web outside, the longeron is followed each interval in the opposite both sides of the width direction of plate body is equipped with a vertical stiffening rib, just the longeron runs through another vertical stiffening rib setting.
The orthotropic steel bridge deck plate and the other first longitudinal stiffening rib comprise a first part and a second part which are symmetrically arranged, and the first part and the second part are welded with the longitudinal beam.
And second longitudinal stiffening ribs are arranged between the longitudinal beam and the pair of first longitudinal stiffening ribs between the web plates of the orthotropic steel bridge deck.
Orthotropic steel decking, still include with the perpendicular baffle that sets up of web, be equipped with on the baffle first vertical stiffening rib with the installation space of second vertical stiffening rib.
The orthotropic steel bridge deck plate, the first longitudinal stiffening rib and the second longitudinal stiffening rib are connected with the partition plate through fasteners.
The orthotropic steel bridge deck plate is characterized in that sealing plates are arranged inside the first longitudinal stiffening ribs and the second longitudinal stiffening ribs along the extending direction.
The technical scheme of the invention has the following advantages:
1. according to the orthotropic steel bridge deck provided by the invention, a pair of first longitudinal stiffening ribs is arranged on two opposite sides of the web plate along the width direction of the plate body, a second longitudinal stiffening rib is arranged between a pair of first longitudinal stiffening ribs between two adjacent web plates, and the height of each first longitudinal stiffening rib is greater than that of each second longitudinal stiffening rib. Therefore, most stress at the web plate can be dispersed through the arrangement of the pair of first longitudinal stiffening ribs, the stress peak value is reduced, and the rest stress is dispersed in the second longitudinal stiffening ribs, so that the stress concentration phenomenon at the web plate is effectively improved, and the cracks possibly generated by a pavement layer arranged on the plate body are avoided.
2. According to the orthotropic steel bridge deck provided by the invention, the first longitudinal stiffening rib and the second longitudinal stiffening rib are both U-shaped stiffening ribs. The U-shaped stiffening ribs have high bending rigidity and torsional rigidity, and the whole structure is more stable.
3. According to the orthotropic steel bridge deck provided by the invention, the two first longitudinal stiffening ribs are arranged on the two opposite sides of the longitudinal beam along the width direction of the deck body, and the longitudinal beam penetrates through the other first longitudinal stiffening rib, so that most of stress at the longitudinal beam is dispersed by the three adjacent first longitudinal stiffening ribs, and the residual stress is dispersed in the second longitudinal stiffening rib, so that the stress concentration phenomenon of the orthotropic steel bridge deck is further improved, and the service life is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a transverse schematic view of an orthotropic steel deck slab provided in accordance with the present invention;
FIG. 2 is a schematic angle view of a first longitudinal stiffener;
FIG. 3 is another angle schematic view of the first longitudinal stiffener.
Description of reference numerals:
1. a plate body; 2. a web; 3. a first longitudinal stiffener; 4. a second longitudinal stiffener; 5. a stringer; 6. a partition plate; 7. a fastener; 8. and (7) closing the plate.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
One embodiment of the orthotropic steel bridge deck as shown in fig. 1 to 3 comprises a deck body 1 and a plurality of webs 2 welded to the lower surface of the deck body 1 at intervals along the width direction of the deck body 1, wherein the plurality of webs 2 are perpendicular to the deck body 1 or are disposed at an included angle with the deck body 1. Follow the width direction of plate body 1, the relative both sides of web 2 divide and are equipped with a pair ofly first vertical stiffening rib 3, adjacent two a pair of between the web 2 still be equipped with the vertical stiffening rib 4 of a plurality of seconds between the first vertical stiffening rib 3, first vertical stiffening rib 3 and the vertical stiffening rib 4 of second adopt the fillet two-sided welding with plate body 1, and the welding seam height is 6mm, just first vertical stiffening rib 3 highly is greater than the height of the vertical stiffening rib 4 of second.
Through calculation and analysis, the stress concentration phenomenon of the bridge deck can be effectively improved by adjusting the rigidity of the longitudinal stiffening ribs in the stress concentration area, and the bridge deck is in the optimal stress state when the bending rigidity ratio of two adjacent longitudinal stiffening ribs is between 4 and 5. Specifically, the first longitudinal stiffener 3 and the second longitudinal stiffener 4 are both U-shaped stiffeners. The opening width of the first longitudinal stiffening rib 3 is 300mm, the bottom width is 175.6mm, and the height is 375 mm; the second longitudinal stiffener 4 has an opening width of 300mm, a base width of 175.6mm and a height of 255 mm.
The distance between said first longitudinal stiffener 3 and said web 2 is less than the distance between two adjacent said second longitudinal stiffeners 4. Specifically, the distance between the first longitudinal stiffener 3 and the web 2 is 410mm, and the distance between two adjacent second longitudinal stiffeners 4 is 600 mm.
Follow the width direction of plate body 1 the 2 outsides of web still are equipped with longeron 5, longeron 5 is followed each interval in the relative both sides of the width direction of plate body 1 is equipped with a first vertical stiffening rib 3, just longeron 5 runs through another first vertical stiffening rib 3 setting, and the distance between two adjacent first vertical stiffening ribs 3 is 600 mm. Specifically, the other first longitudinal stiffener 3 comprises a first portion and a second portion which are symmetrically arranged, and the first portion and the second portion are cut during assembly and then welded with the longitudinal beam 5 to form the clamping structure.
To further avoid the stress concentration phenomenon, a plurality of second longitudinal stiffeners 4 are provided at intervals between a pair of the first longitudinal stiffeners 3 between the longitudinal beams 5 and the web 2.
The lower surface of the plate body 1 is also welded with a partition plate 6 which is perpendicular to the web plate 2, and the partition plate 6 is provided with an installation space for the first longitudinal stiffening rib 3 and the second longitudinal stiffening rib 4. Specifically, as shown in fig. 2 and 3, the first longitudinal stiffener 3 and the second longitudinal stiffener 4 are connected to the bulkhead 6 by high-strength bolts as fasteners 7.
To avoid air entering inside the first and second longitudinal stiffeners 3, 4, a sealing plate 8 is provided inside the first and second longitudinal stiffeners 3, 4 in the direction of extension. And the outer sides of the first longitudinal stiffening rib 3 and the second longitudinal stiffening rib 4 are subjected to anticorrosion treatment, and the anticorrosion life is not less than 25 years.
As an alternative embodiment, the first and second longitudinal stiffeners 3, 4 may also be rectangular, T-shaped, V-shaped, or the like.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (9)
1. An orthotropic steel deck plate, comprising:
a plate body (1);
the plurality of webs (2) are arranged on the lower surface of the plate body (1) along the width direction of the plate body (1);
first vertical stiffening rib (3) and the vertical stiffening rib (4) of second, it is a pair of first vertical stiffening rib (3) is followed the width direction of plate body (1) is established separately the relative both sides of web (2), the vertical stiffening rib (4) of second is located adjacent two a pair between web (2) between the vertical stiffening rib (3) of first, just the height of vertical stiffening rib (3) of first is greater than the height of vertical stiffening rib (4) of second.
2. Orthotropic steel bridge deck according to claim 1, wherein said first longitudinal stiffeners (3) and said second longitudinal stiffeners (4) are both U-shaped stiffeners.
3. Orthotropic steel bridge deck according to claim 1 or 2, wherein the distance between the first longitudinal stiffener (3) and the web (2) is smaller than the distance between two adjacent second longitudinal stiffeners (4).
4. The orthotropic steel bridge deck according to any one of claims 1 to 3, further comprising a longitudinal beam (5) disposed outside the web (2) in the width direction of the slab (1), wherein the longitudinal beam (5) is provided with one first longitudinal stiffening rib (3) at intervals on each of two opposite sides of the slab (1) in the width direction, and the longitudinal beam (5) is disposed to penetrate the other first longitudinal stiffening rib (3).
5. Orthotropic steel bridge deck according to claim 4, characterized in that the other first longitudinal stiffener (3) comprises a first and a second symmetrically arranged part, both welded to the stringer (5).
6. The orthotropic steel bridge deck according to claim 4, wherein a second longitudinal stiffener (4) is provided between a pair of said first longitudinal stiffeners (3) between said stringers (5) and said web (2).
7. The orthotropic steel bridge deck according to any one of claims 1 to 6, further comprising a partition (6) disposed perpendicular to the web (2), wherein the partition (6) is provided with an installation space for the first longitudinal stiffener (3) and the second longitudinal stiffener (4).
8. The orthotropic steel bridge deck according to claim 7, wherein the first longitudinal stiffener (3) and the second longitudinal stiffener (4) are connected with the bulkhead (6) by fasteners (7).
9. The orthotropic steel bridge deck according to any of claims 1 to 8, wherein the first longitudinal stiffeners (3) and the second longitudinal stiffeners (4) are internally provided with sealing plates (8) in the direction of extension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010493193.4A CN111519528A (en) | 2020-06-02 | 2020-06-02 | Orthotropic steel bridge deck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010493193.4A CN111519528A (en) | 2020-06-02 | 2020-06-02 | Orthotropic steel bridge deck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111519528A true CN111519528A (en) | 2020-08-11 |
Family
ID=71913090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010493193.4A Pending CN111519528A (en) | 2020-06-02 | 2020-06-02 | Orthotropic steel bridge deck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111519528A (en) |
-
2020
- 2020-06-02 CN CN202010493193.4A patent/CN111519528A/en active Pending
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