CN110983969A - Method for reducing uneven deformation of orthogonal steel bridge deck and deck - Google Patents
Method for reducing uneven deformation of orthogonal steel bridge deck and deck Download PDFInfo
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- CN110983969A CN110983969A CN202010010836.5A CN202010010836A CN110983969A CN 110983969 A CN110983969 A CN 110983969A CN 202010010836 A CN202010010836 A CN 202010010836A CN 110983969 A CN110983969 A CN 110983969A
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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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- 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
- E01D2/02—Bridges characterised by the cross-section of their bearing spanning structure of the I-girder type
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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Abstract
The invention relates to a method for reducing uneven deformation of an orthogonal steel bridge deck and a deck. The bottom surface of the panel is provided with orthogonal fourth I-shaped steel and orthogonal fifth I-shaped steel, the deformation of the panel between the two girder I-shaped steels is borne by the orthogonal fourth I-shaped steel and the orthogonal fifth I-shaped steel, the force borne by the panel is transmitted to the orthogonal first I-shaped steel and the orthogonal second I-shaped steel through the third I-shaped steel, the first I-shaped steel is fixed on a web plate of the girder I-shaped steel, so the borne force is borne by the girder I-shaped steel finally, and the girder I-shaped steel bears the pressure received by the panel through the side-by-side girder I-shaped steel and the I-shaped steel orthogonally arranged between the girder I-shaped steels under the action of the force, so that the panel is prevented from generating uneven deformation, and the panel or the truss structure is.
Description
Technical Field
The invention relates to a steel bridge deck, in particular to a method for reducing uneven deformation of an orthogonal steel bridge deck and the deck.
Background
With the rapid development of bridge services, steel bridges are applied more and more. Most of bridge decks of steel truss girder bridges are steel deck decks, asphalt pavements or concrete pavements are arranged on the decks, supports of longitudinal girder I-beams are arranged below the decks, and the deck can better bear loads with the aid of transverse small I-beams. The current steel bridge is designed by connecting four longitudinal large I-steel main beams by thin small I-steel cross beams, wherein the large I-steel directly contacts the lower part of a bridge floor, and the small I-steel is connected in the middle of the waist of the large I-steel and does not directly contact the lower part of the bridge floor. The small I-steel plays a certain role in transversely stabilizing and reinforcing the large I-steel, the transverse tension of the large I-steel is increased, and the bridge deck is indirectly supported. However, in the actual use process of the steel bridge, if the wheels of the cart just pass through the middle position of the longitudinal and transverse beams, the settlement generated at the center point of the square position formed by the longitudinal and transverse i-beams is large, and the deflection difference between the longitudinal beams and the transverse beams is increased. When the heavy vehicle rolls and vibrates for a long time, the bridge deck can deform, and further the deformation of the cross beam and the longitudinal beam is uneven, so that the connecting part is broken and damaged.
Disclosure of Invention
The invention aims to provide a method and a panel for reducing uneven deformation of an orthogonal steel bridge deck, so as to solve the problem that the steel bridge deck is easy to be damaged due to uneven deformation in the prior art.
The invention is realized by the following steps: a method of reducing non-uniform deformation of an orthogonal steel deck slab comprising the steps of:
a. installing a plurality of girder I-shaped steels along the length direction of the panel below the panel, and fixing top wing plates of the girder I-shaped steels on the bottom surface of the panel;
b. a plurality of first I-shaped steels which are arranged side by side are arranged between two adjacent girder I-shaped steels, so that the web plates of the first I-shaped steels are perpendicular to the web plates of the girder I-shaped steels, and the first I-shaped steels are positioned in the middle of the height direction of the web plates of the girder I-shaped steels;
c. a plurality of groups of mutually orthogonal fourth I-shaped steel and fifth I-shaped steel are arranged between two adjacent girder I-shaped steels on the bottom surface of the panel, a top wing plate of the fourth I-shaped steel and a top wing plate of the fifth I-shaped steel are fixed on the bottom surface of the panel, and two ends of the fifth I-shaped steel are fixed on the girder I-shaped steels on two sides;
d. installing a second I-beam between two adjacent first I-beams, enabling the second I-beam to be orthogonal to the first I-beams, and enabling the end part of the second I-beam to be fixed in the middle of the first I-beam web plate in the length direction;
e. and a vertical third I-beam is arranged at the intersection point of the fourth I-beam and the fifth I-beam, so that the upper end of the third I-beam is fixed at the intersection point of the fourth I-beam and the fifth I-beam, and the lower end of the third I-beam is fixed on the second I-beam.
And the web plates of the first I-shaped steel, the second I-shaped steel, the fourth I-shaped steel and the fifth I-shaped steel are all perpendicular to the bottom surface of the panel.
The first I-shaped steel, the second I-shaped steel, the third I-shaped steel, the fourth I-shaped steel and the fifth I-shaped steel are identical in specification, and the size of the first I-shaped steel is smaller than that of the girder I-shaped steel.
The invention also discloses an orthogonal steel bridge deck, which comprises a deck plate and a truss structure positioned below the deck plate, wherein the truss structure comprises a plurality of girder I-steels, the girder I-steels are parallel to each other, web plates are vertical to the deck plate, the length directions of the girder I-steels are consistent with the length direction of the deck plate, top wing plates of the girder I-steels are in contact with the bottom surface of the deck plate, a first I-steel and a second I-steel which are orthogonal are arranged between two adjacent girder I-steels, the first I-steel and the second I-steel are positioned in the middle of the height of the web plate of the girder I-steel, a fourth I-steel and a fifth I-steel which are orthogonal are arranged on the bottom surface of the deck plate, a longitudinal third I-steel is arranged at the intersection point of the fourth I-steel and the fifth I-steel, the upper end of the third I-steel is in contact with the intersection point of the fourth I-steel and the fifth I-steel, the lower end of the third I-beam is contacted with the top of the first I-beam or the second I-beam.
A plurality of first I-steel is evenly distributed side by side two adjacent between the girder I-steel, the both ends of first I-steel are fixed respectively on the web of two adjacent girder I-steels, the second I-steel sets up adjacent two between the first I-steel, just second I-steel end fixing is in the centre of first I-steel, the web of first I-steel with the web mutually perpendicular of second I-steel and all perpendicular to the panel.
A plurality of fifth I-steel evenly distributed side by side between the adjacent two girder I-steel, the fourth I-steel sets up in adjacent two between the fifth I-steel, just fourth I-steel end fixing the centre of fifth I-steel, the web of fifth I-steel in the web mutually perpendicular of fourth I-steel just all perpendicular to the panel.
The distance between two adjacent first I-beams is the same as the distance between two adjacent fifth I-beams.
The lower end of the third I-shaped steel is fixed in the middle of the second I-shaped steel
The first I-shaped steel, the second I-shaped steel, the third I-shaped steel, the fourth I-shaped steel and the fifth I-shaped steel are the same in specification, and the size of the first I-shaped steel is smaller than that of the girder I-shaped steel.
The invention is provided with the girder I-steel, the length direction of the girder I-steel is consistent with the length direction of the panel, and the top wing plate of the girder I-steel is in contact with the panel to reduce the integral deformation of the panel. The bottom surface of the panel is provided with orthogonal fourth I-shaped steel and orthogonal fifth I-shaped steel, the deformation of the panel between the two girder I-shaped steels is borne by the orthogonal fourth I-shaped steel and the orthogonal fifth I-shaped steel, the force borne by the panel is transmitted to the orthogonal first I-shaped steel and the orthogonal second I-shaped steel through the third I-shaped steel, the first I-shaped steel is fixed on a web plate of the girder I-shaped steel, so the borne force is borne by the girder I-shaped steel finally, and the girder I-shaped steel bears the pressure received by the panel through the side-by-side girder I-shaped steel and the I-shaped steel orthogonally arranged between the girder I-shaped steels under the action of the force, so that the panel is prevented from generating uneven deformation, and the panel or the truss structure is.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
Fig. 3 is a view from a-a of fig. 2.
Fig. 4 is a view from B-B of fig. 2.
In the figure: 1. a panel; 2. girder I-steel; 3. a first I-steel; 4. a second I-steel; 5. a third I-steel; 6. fourth I-shaped steel; 7. and fifth I-shaped steel.
Detailed Description
As shown in FIGS. 1 to 4, the method for reducing the uneven deformation of the orthogonal steel bridge deck comprises the following steps:
a. a plurality of girder I-shaped steels 2 are arranged below the panel 1 along the length direction of the panel 1, and top wing plates of the girder I-shaped steels 2 are fixed on the bottom surface of the panel 1;
b. a plurality of first I-beams 3 which are arranged side by side are arranged between two adjacent girder I-beams 2, so that the web plate of the first I-beam 3 is perpendicular to the web plate of the girder I-beam 2, and the first I-beam 3 is positioned in the middle of the height direction of the web plate of the girder I-beam 2;
c. a plurality of groups of mutually orthogonal fourth I-shaped steel 6 and fifth I-shaped steel 7 are arranged between two adjacent girder I-shaped steels 2 on the bottom surface of the panel 1, a top wing plate of the fourth I-shaped steel 6 and a top wing plate of the fifth I-shaped steel 7 are fixed on the bottom surface of the panel 1, and two ends of the fifth I-shaped steel 7 are fixed on the girder I-shaped steels 2 on two sides;
d. installing a second I-beam 4 between two adjacent first I-beams 3, enabling the second I-beam 4 to be orthogonal to the first I-beams 3, and enabling the end part of the second I-beam 4 to be fixed in the middle of the web plate of the first I-beam 3 in the length direction;
e. and a vertical third I-beam 5 is arranged at the intersection of the fourth I-beam 6 and the fifth I-beam 7, so that the upper end of the third I-beam 5 is fixed at the intersection of the fourth I-beam 6 and the fifth I-beam 7, and the lower end of the third I-beam 5 is fixed on the second I-beam 4.
The webs of the first I-beam 3, the second I-beam 4, the fourth I-beam 6 and the fifth I-beam 7 are all perpendicular to the bottom surface of the panel 1. The first I-shaped steel 3, the second I-shaped steel 4, the third I-shaped steel 5, the fourth I-shaped steel 6 and the fifth I-shaped steel 7 are identical in specification, and the size of the first I-shaped steel is smaller than that of the girder I-shaped steel 2.
The steel bridge deck plate 1 is reinforced through the method, and the truss structure is built below the deck plate 1, so that the steel bridge deck plate 1 deforms more uniformly when stressed, and the deformation resistance of the orthogonal deck plate 1 is greatly enhanced.
The orthogonal steel bridge deck plate comprises a deck plate 1 and a truss structure positioned below the deck plate 1, wherein the truss structure comprises a plurality of girder I-beams 1, the girder I-beams 1 are parallel to each other, web plates are vertical to the deck plate 1, the length direction of the girder I-beams 1 is consistent with the length direction of the deck plate 1, top wing plates of the girder I-beams 1 are in contact with the bottom surface of the deck plate 1, a first I-beam 3 and a second I-beam 4 which are orthogonal are arranged between two adjacent girder I-beams 1, the first I-beam 3 and the second I-beam 4 are positioned in the middle of the height of the web plates of the girder I-beams 1, a fourth I-beam 6 and a fifth I-beam 7 which are orthogonal are arranged on the bottom surface of the deck plate 1, a longitudinal third I-beam 5 is arranged at the intersection point of the fourth I-beam 6 and the fifth I-beam 7, the upper end of the third I-beam 5 is in contact with the intersection point of the fourth I, the lower end of the third I-beam 5 is contacted with the top of the first I-beam 3 or the second I-beam 4.
A plurality of first I-beams 3 are arranged between two adjacent girder I-beams 1 side by side, two ends of each first I-beam 3 are respectively fixed on webs of the two girder I-beams 1, the intervals between the adjacent I-beams are the same, the first I-beams 3 on two sides of the same girder I-beam 1 are positioned on the same straight line, the webs of the first I-beams 3 are perpendicular to the panel 1 and the webs of the girder I-beams 1, and the first I-beams 3 are positioned in the middle of the webs of the girder I-beams 1 in the height direction. The girder I-beams 1 which are originally independent are connected into a whole through the first I-beam 3 to form a main body part of the truss structure of the supporting panel 1, so that the strength of the girder I-beams 1 is increased.
Second I-beams 4 are fixed between two adjacent first I-beams 3, two ends of each second I-beam 4 are fixed on the first I-beams 3, the second I-beams 4 are located in the middle of the first I-beams 3 in the length direction, web plates of the second I-beams 4 are perpendicular to the panel 1 and the web plates of the first I-beams 3, and the second I-beams 4 on two sides of the same first I-beam 3 are located on the same straight line. The second i-beam 4 connects the first i-beams 3 between two adjacent main beam i-beams 1 to each other, so that the strength of the first i-beams 3 and the strength of the main beam i-beams are increased, and meanwhile, the second i-beams 4 and the first i-beams 3 serve as a conduction structure to conduct the force from the orthogonal fourth i-beam 6 and the orthogonal fifth i-beam 7 to the main beam i-beams 1.
The area of a part between two girder I-steels 1 on the lower surface of a panel 1 is large, a fifth I-steel 7 and a fourth I-steel 6 which are orthogonal are fixed on the lower surface of the panel 1, two ends of the fifth I-steel 7 are fixed on the two girder I-steels 1, a web plate of the fifth I-steel 7 is perpendicular to the panel 1 and web plates of the girder I-steels 1, the distance between the adjacent fifth I-steels 7 is the same, the fourth I-steel 6 is fixed between the two adjacent fifth I-steels 7, the web plate of the fourth I-steel 6 is perpendicular to the panel 1 and the web plates of the fifth I-steel 7, the end part of the fourth I-steel 6 is fixed in the middle of the length direction of the fifth I-steel 7, and a wing plate at the top of the fourth I-steel 6 and a wing plate at the top of the fifth I-steel 7 are both fixed on the lower surface of the. The cross-shaped structure formed by the fourth I-shaped steel 6 and the fifth I-shaped steel 7 supports the panel 1 between the two girder I-shaped steels 1, and the cross point of the fourth I-shaped steel 6 and the fifth I-shaped steel 7 is located in the middle of the gap between the two girder I-shaped steels 1, so that the support of the panel 1 at the gap between the girder I-shaped steels 1 is enhanced, and the deformation of the panel 1 is reduced.
An orthogonal structure formed by fourth I-shaped steel 6 and fifth I-shaped steel 7 is connected with an orthogonal structure formed by first I-shaped steel 3 and second I-shaped steel 4 through third I-shaped steel 5, the length direction of the third I-shaped steel 5 is perpendicular to the panel 1, the top end of the third I-shaped steel 5 is fixed at the intersection of the fourth I-shaped steel 6 and the fifth I-shaped steel 7 and used for bearing the pressure applied to the intersection, and the lower end of the third I-shaped steel 5 is fixed on the second I-shaped steel 4, so that the force applied to the fourth I-shaped steel 6 and the fifth I-shaped steel 7 is transmitted to the second I-shaped steel 4 and then transmitted to the girder I-shaped steel 1 through the first I-shaped steel 3.
The distance between two adjacent first I-beams 3 is the same as the distance between two adjacent main beam I-beams 1, and the distance between two adjacent fifth I-beams 7 is also the same, so that a plurality of square areas are formed, and the maximum supporting strength is obtained under the condition that the used section steel materials are the minimum. Meanwhile, the lower end of the third I-beam 5 is fixed in the middle of the second I-beam 4 in the length direction, and the square formed by the fourth I-beam 6, the fifth I-beam 7 and the girder I-beam 1 and the square formed by the first I-beam 3, the second I-beam 4 and the girder I-beam 1 are distributed in a staggered mode in the horizontal direction, so that the stress distribution of the whole truss structure is improved, and the bending strength of the truss structure is improved.
The first I-steel 3, the second I-steel 4, the third I-steel 5, the fourth I-steel 6 and the fifth I-steel 7 are identical in specification, the size of the first I-steel is smaller than that of the first girder I-steel 1, the first girder I-steel 1 is large-sized I-steel, the other I-steels are small-sized I-steel, and in a bridge building, the large-sized I-steel is 1630mm, 600mm, 25mm (waist height h, leg height b, waist thickness d), and the small-sized I-steel is 400mm, 30mm, 12mm (waist height h, leg height b, waist thickness d). The small-sized I-beams are connected between the large-sized I-beams, so that the weight of the whole truss structure is reduced on one hand, the pressure on a pier is reduced, on the other hand, the types of the small-sized I-beams are consistent, the small-sized I-beams are convenient to connect, and meanwhile, the cost is lower.
The cross-shaped structure formed by the fourth I-shaped steel 6 and the fifth I-shaped steel 7 strengthens the tensile strength of the panel 1 in two orthogonal directions on the horizontal plane, thereby strengthening the strength of the panel 1 and reducing the bending deformation of the panel 1. The pressure borne by the fourth I-shaped steel 6 and the fifth I-shaped steel 7 is transmitted to the girder I-shaped steel 1, and the girder I-shaped steel 1 can act on the bridge deck 1 to generate longitudinal contraction force after being stressed, so that the stress strength of the whole steel bridge deck 1 in the longitudinal direction is enhanced. A whole truss structure is buckled one ring by one ring to form a supporting structure with high strength, so that the stability of the whole bridge is greatly improved, the strength of the panel 1 is increased, and the deformation of the panel 1 and the truss structure is reduced.
Claims (9)
1. A method for reducing uneven deformation of an orthogonal steel bridge deck, comprising the steps of:
a. installing a plurality of girder I-shaped steels along the length direction of the panel below the panel, and fixing top wing plates of the girder I-shaped steels on the bottom surface of the panel;
b. a plurality of first I-shaped steels which are arranged side by side are arranged between two adjacent girder I-shaped steels, so that the web plates of the first I-shaped steels are perpendicular to the web plates of the girder I-shaped steels, and the first I-shaped steels are positioned in the middle of the height direction of the web plates of the girder I-shaped steels;
c. a plurality of groups of mutually orthogonal fourth I-shaped steel and fifth I-shaped steel are arranged between two adjacent girder I-shaped steels on the bottom surface of the panel, a top wing plate of the fourth I-shaped steel and a top wing plate of the fifth I-shaped steel are fixed on the bottom surface of the panel, and two ends of the fifth I-shaped steel are fixed on the girder I-shaped steels on two sides;
d. installing a second I-beam between two adjacent first I-beams, enabling the second I-beam to be orthogonal to the first I-beams, and enabling the end part of the second I-beam to be fixed in the middle of the first I-beam web plate in the length direction;
e. and a vertical third I-beam is arranged at the intersection point of the fourth I-beam and the fifth I-beam, so that the upper end of the third I-beam is fixed at the intersection point of the fourth I-beam and the fifth I-beam, and the lower end of the third I-beam is fixed on the second I-beam.
2. The method of reducing uneven deformation of orthogonal steel bridge deck panels as recited in claim 1, wherein the webs of said first i-beam, second i-beam, fourth i-beam and fifth i-beam are all perpendicular to the bottom surface of said deck panels.
3. The method for reducing the uneven deformation of the orthogonal steel bridge deck as recited in claim 1, wherein the first i-steel, the second i-steel, the third i-steel, the fourth i-steel and the fifth i-steel have the same size and are smaller than the size of the girder i-steel.
4. An orthogonal steel bridge deck plate manufactured by the method for reducing the uneven deformation of the orthogonal steel bridge deck plate according to claim 1, comprising a deck plate and a truss structure positioned below the deck plate, wherein the truss structure comprises a plurality of girder I-steels, the girder I-steels are parallel to each other, a web plate is perpendicular to the deck plate, the length direction of the girder I-steels is consistent with the length direction of the deck plate, top wing plates of the girder I-steels are in contact with the bottom surface of the deck plate, orthogonal first I-steels and second I-steels are arranged between two adjacent girder I-steels, the first I-steels and the second I-steels are positioned in the middle of the height of the web plate of the girder I-steels, orthogonal fourth I-steels and fifth I-steels are arranged on the bottom surface of the deck plate, and longitudinal third I-steels are arranged at the intersection points of the fourth I-steels and the fifth I-steels, the upper end of the third I-beam is in contact with the intersection point of the fourth I-beam and the fifth I-beam, and the lower end of the third I-beam is in contact with the top of the first I-beam or the second I-beam.
5. The orthogonal steel bridge deck according to claim 4, wherein a plurality of first I-beams are uniformly distributed between two adjacent girder I-beams side by side, two ends of each first I-beam are respectively fixed on webs of two adjacent girder I-beams, the second I-beam is arranged between two adjacent first I-beams, the end of each second I-beam is fixed in the middle of each first I-beam, and the webs of the first I-beams and the webs of the second I-beams are perpendicular to each other and perpendicular to the deck.
6. The orthogonal steel bridge deck according to claim 4, wherein a plurality of the fifth I-beams are uniformly distributed between two adjacent main beam I-beams side by side, the fourth I-beam is arranged between two adjacent fifth I-beams, the end of the fourth I-beam is fixed in the middle of the fifth I-beam, and the webs of the fifth I-beams are perpendicular to the webs of the fourth I-beams and perpendicular to the deck.
7. The orthogonal steel bridge deck according to claim 5 or 6, wherein a distance between adjacent two first I-beams is the same as a distance between adjacent two fifth I-beams.
8. The orthogonal steel deck panel as defined in claim 7, wherein a lower end of said third i-steel is fixed in the middle of said second i-steel.
9. The orthogonal steel deck panel of claim 4, wherein the first I-beam, the second I-beam, the third I-beam, the fourth I-beam, and the fifth I-beam are of the same size and are smaller than the girder I-beam.
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| CN202010010836.5A CN110983969B (en) | 2020-01-06 | 2020-01-06 | Method for reducing uneven deformation of orthogonal steel bridge deck and deck |
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| CN202010010836.5A CN110983969B (en) | 2020-01-06 | 2020-01-06 | Method for reducing uneven deformation of orthogonal steel bridge deck and deck |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111549650A (en) * | 2020-04-25 | 2020-08-18 | 上海洪铺钢结构工程有限公司 | Steel structure bridge and machining process thereof |
| CN111560846A (en) * | 2020-04-30 | 2020-08-21 | 中交路桥华南工程有限公司 | Method for mounting bridge deck system steel longitudinal and transverse beams |
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| KR100685725B1 (en) * | 2003-09-05 | 2007-02-23 | 아사히 엔지니어링 가부시키가이샤 | Structure of floor slab bridge |
| CN104631319A (en) * | 2015-02-16 | 2015-05-20 | 清华大学 | Connector-free steel and ultrahigh-performance concrete combined bridge deck structure and construction method thereof |
| CN108166371A (en) * | 2017-11-21 | 2018-06-15 | 陕西中金钢桥工程科技有限公司 | A kind of mountable steel bridge |
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2020
- 2020-01-06 CN CN202010010836.5A patent/CN110983969B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100685725B1 (en) * | 2003-09-05 | 2007-02-23 | 아사히 엔지니어링 가부시키가이샤 | Structure of floor slab bridge |
| CN104631319A (en) * | 2015-02-16 | 2015-05-20 | 清华大学 | Connector-free steel and ultrahigh-performance concrete combined bridge deck structure and construction method thereof |
| CN108166371A (en) * | 2017-11-21 | 2018-06-15 | 陕西中金钢桥工程科技有限公司 | A kind of mountable steel bridge |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111549650A (en) * | 2020-04-25 | 2020-08-18 | 上海洪铺钢结构工程有限公司 | Steel structure bridge and machining process thereof |
| CN111560846A (en) * | 2020-04-30 | 2020-08-21 | 中交路桥华南工程有限公司 | Method for mounting bridge deck system steel longitudinal and transverse beams |
| CN111560846B (en) * | 2020-04-30 | 2022-02-11 | 中交路桥华南工程有限公司 | Method for mounting bridge deck system steel longitudinal and transverse beams |
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| CN110983969B (en) | 2021-06-11 |
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