CN111218888A - All-welded weather-resistant steel truss girder - Google Patents
All-welded weather-resistant steel truss girder Download PDFInfo
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- CN111218888A CN111218888A CN201911148176.0A CN201911148176A CN111218888A CN 111218888 A CN111218888 A CN 111218888A CN 201911148176 A CN201911148176 A CN 201911148176A CN 111218888 A CN111218888 A CN 111218888A
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- steel truss
- welded
- steel
- truss girder
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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
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
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Abstract
The invention discloses a weather-resistant steel all-welded steel truss girder which comprises a steel truss structure fixed on piers on two sides, wherein the steel truss structure comprises an upper chord member, a web member and a lower chord member, two ends of the web member are respectively welded and fixed with the upper chord member and the lower chord member, the web member is inclined, and adjacent web members and the upper chord member/the lower chord member are enclosed into a triangular shape. According to the invention, the upper chord member, the web members and the lower chord member are all made of weather-resistant steel materials to carry out full welding operation, so that a drilling structure adopting bolt connection is avoided, the mechanical property of a welding part is improved in a staggered joint or butt joint welding mode, and the integral firmness is enhanced through the stiffening structure. Meanwhile, the weather-resistant welding material is adopted to realize the integral coating-free of the steel truss girder, and the steel truss girder has the advantages of low investment in the whole life cycle, small maintenance and repair workload, good environmental protection and the like. The invention overcomes the defect that the prior steel truss girder needs to be repeatedly coated, and has reasonable structure, good economy, strong practicability and wider application prospect.
Description
Technical Field
The invention belongs to the field of bridge crossing systems, and particularly relates to a weathering steel all-welded steel truss girder.
Background
At present, steel adopted by the steel truss girder is mostly low alloy steel, and in order to prevent corrosion, the surface of the steel is coated with an anticorrosion coating. The steel truss girder mostly adopts the bolt welding structure, welds into member piece or segment promptly in the mill, and member piece or segment adopt the bolt connection to become whole in the building site, because the bolt position is easily rusted, also need to do anticorrosive coating. The anticorrosion coating needs to be periodically and repeatedly implemented, and has high manufacturing cost, large workload and poor environmental protection performance.
Disclosure of Invention
The invention aims to provide a weather-resistant steel all-welded steel truss girder, which aims to solve the problems in the prior art.
The technical scheme of the invention is as follows: the utility model provides a resistant steel all-welded steel truss girder of waiting, is including fixing the steel truss structure on the pier of both sides, the steel truss structure includes chord member, web member, lower chord member, and the web member both ends respectively with chord member, lower chord member welded fastening, the web member is the slope form, and adjacent web member encloses into three horn shapes with chord member/lower chord member.
And a vertical rod is welded between the upper chord and the lower chord.
And a cross rod is welded between the adjacent web members.
The connecting rods are welded at the two ends of the cross rod, and the other ends of the two connecting rods are welded on the lower chord in an intersecting manner.
The web members are in a head-to-tail connection shape, and the middle parts of the web members are not crossed.
The web members are in a cross shape with the middle parts connected end to end.
The upper chord, the web members and the lower chord are all made of weather-resistant steel. And the steel truss structure is also provided with a stiffening structure.
The stiffening structure is an arch stiffening structure with the middle part higher than the two ends.
The stiffening structure is a curved chord stiffening structure with the middle part lower than the two ends.
According to the invention, the upper chord member, the web members and the lower chord member are all made of weather-resistant steel materials to carry out full welding operation, so that a drilling structure adopting bolt connection is avoided, the mechanical property of a welding part is improved in a staggered joint or butt joint welding mode, and the integral firmness is enhanced through the stiffening structure. Meanwhile, the weather-resistant welding material is adopted to realize the integral coating-free of the steel truss girder, and the steel truss girder has the advantages of low investment in the whole life cycle, small maintenance and repair workload, good environmental protection and the like.
The invention overcomes the defect that the prior steel truss girder needs to be repeatedly coated, and has reasonable structure, good economy, strong practicability and wider application prospect.
Drawings
FIG. 1 is a schematic view of a steel truss structure according to the present invention having a vertical bar shape;
FIG. 2 is a schematic view of the steel truss structure of the present invention without vertical bars;
FIG. 3 is a schematic view of a steel truss structure of the present invention having cross bars;
FIG. 4 is a schematic view of the steel truss structure of the present invention in the form of a web member cross;
FIG. 5 is a schematic view of a continuous steel truss beam of the present invention;
FIG. 6 is a schematic view of a weld of the steel truss member of the present invention;
figure 7 is a schematic view of another weld for a steel truss girder section of the present invention;
FIG. 8 is a structural schematic of the arch stiffener of the present invention;
FIG. 9 is a structural schematic of the present invention curved-chord stiffening;
wherein:
1 steel truss structure 2 bridge span
3 support 4 pier
5 steel truss girder member 6 cover plate welding seam
7-web welding seam 8-bar web construction hole
9 member cover plate construction hole 10 member partition plate construction hole
11 arch stiffening structure 12 curved chord stiffening structure
101 top chord 102 web member
103 lower chord 104 vertical rod
105 cross-bar 106 connecting the bars.
Detailed Description
The present invention is described in detail below with reference to the accompanying drawings and examples:
as shown in fig. 1 to 9, the weather-resistant steel all-welded steel truss girder comprises a steel truss structure 1 fixed on a pier 2 on two sides, wherein the steel truss structure 1 comprises an upper chord 101, a web member 102 and a lower chord 103, two ends of the web member 102 are respectively welded and fixed with the upper chord 101 and the lower chord 103, the web member 102 is inclined, and the adjacent web member 102 and the upper chord 101/the lower chord 103 enclose a triangular shape.
As shown in fig. 1, the weather-resistant steel all-welded steel truss girder comprises a steel truss structure 1 fixed on a pier 2 at two sides, wherein the steel truss structure 1 comprises an upper chord 101, a web member 102 and a lower chord 103, two ends of the web member 102 are respectively welded and fixed with the upper chord 101 and the lower chord 103, the web member 102 is inclined, and the adjacent web member 102 and the upper chord 101/the lower chord 103 enclose a triangular shape.
A vertical rod 104 is welded between the upper chord 101 and the lower chord 103.
The upper chord 101, the web members 102, the lower chord 103 and the vertical rods 104 are all made of weather-resistant steel.
The vertical rod 104 is perpendicular to the upper chord 101 and the lower chord 103.
Preferably, the welding position of one end of the vertical rod 104 is the welding fixing position of the web member 102.
As shown in fig. 3, the weather-resistant steel all-welded steel truss girder comprises a steel truss structure 1 fixed on a pier 2 at two sides, wherein the steel truss structure 1 comprises an upper chord 101, a web member 102 and a lower chord 103, two ends of the web member 102 are respectively welded and fixed with the upper chord 101 and the lower chord 103, the web member 102 is inclined, and the adjacent web member 102 and the upper chord 101/the lower chord 103 enclose a triangular shape.
Between adjacent web members 102 a cross bar 105 is welded.
The two ends of the cross rod 105 are welded with connecting rods 106, and the other ends of the two connecting rods 106 are welded on the lower chord 103 in an intersecting manner.
The upper chord 101, the web members 102, the lower chord 103, the cross bars 105 and the connecting rods 106 are all made of weather-resistant steel.
Preferably, the cross bar 105 and the two connecting bars 106 enclose a triangular shape. The triangle formed by the cross rod 105 and the two connecting rods 106 is inverted with the triangle formed by the lower chord 103 and the two web members 102.
The web members 102 are in a head-to-tail non-intersecting shape with a middle portion.
As shown in fig. 4, the weather-resistant steel all-welded steel truss girder comprises a steel truss structure 1 fixed on a pier 2 at two sides, wherein the steel truss structure 1 comprises an upper chord 101, a web member 102 and a lower chord 103, two ends of the web member 102 are respectively welded and fixed with the upper chord 101 and the lower chord 103, the web member 102 is inclined, and the adjacent web member 102 and the upper chord 101/the lower chord 103 enclose a triangular shape.
The web members 102 are in the shape of a cross end-to-end cross.
The upper chord 101, the web members 102 and the lower chord 103 are all made of weather-resistant steel.
As shown in fig. 8 to 9, the steel truss structure 1 is further provided with a stiffening structure.
The stiffening structure is an arch stiffening structure 11 with the middle part higher than the two ends.
The stiffening structure is a curved chord stiffening structure 12 with the middle part lower than the two ends.
As shown in fig. 5, the weathering steel all-welded steel girder includes one or more spans 2.
And a support 3 is arranged between the two ends of the steel truss structure 1 and the pier 4.
The steel truss structure 1 is one or more pieces in the transverse direction of the bridge deck.
The steel truss structure 1 is of an equal-height structure or a variable-height structure.
As shown in fig. 6 to 7, the upper chord 101, the web member 102, and the lower chord 103 each include a multi-section steel truss girder member 5, and the steel truss girder members 5 are welded and fixed.
The upper plate and the upper plate, the lower plate and the web plate between the adjacent steel truss girder rod pieces 5 are welded and fixed.
And a cover plate welding seam 6 and a web welding seam 7 are fixedly formed between the adjacent steel truss girder rod pieces 5.
The butt seam structure between the cover plate welding seam 6 and the web welding seam 7 is shown in figure 6.
The staggered seam structure is arranged between the cover plate welding seam 6 and the web welding seam 7 as shown in figure 7.
And the welding operation between the steel truss girder rod pieces 5 adopts a welding material with weather resistance.
Preferably, a rod cover plate construction hole 9 is formed at the cover plate of the steel truss girder rod 5, a rod web plate construction hole 8 is formed at the web plate of the steel truss girder rod, and a rod partition plate construction hole 10 is formed at the partition plate of the steel truss girder rod.
The rod cover plate construction hole 9, the rod web plate construction hole 8 and the rod partition plate construction hole 10 are convenient for a constructor to carry out welding operation.
According to the invention, the upper chord member, the web members and the lower chord member are all made of weather-resistant steel materials to carry out full welding operation, so that a drilling structure adopting bolt connection is avoided, the mechanical property of a welding part is improved in a staggered joint or butt joint welding mode, and the integral firmness is enhanced through the stiffening structure. Meanwhile, the weather-resistant welding material is adopted to realize the integral coating-free of the steel truss girder, and the steel truss girder has the advantages of low investment in the whole life cycle, small maintenance and repair workload, good environmental protection and the like.
The invention overcomes the defect that the prior steel truss girder needs to be repeatedly coated, and has reasonable structure, good economy, strong practicability and wider application prospect.
Claims (10)
1. The utility model provides a resistant steel all-welded steel longeron of waiting, is including fixing steel purlin structure (1) on both sides pier (2), its characterized in that: the steel truss structure (1) comprises an upper chord (101), a web member (102) and a lower chord (103), wherein two ends of the web member (102) are respectively welded and fixed with the upper chord (101) and the lower chord (103), the web member (102) is inclined, and the adjacent web member (102) and the upper chord (101)/the lower chord (103) enclose into a triangular shape.
2. The weathering steel all-welded steel truss girder of claim 1, wherein: vertical rods (104) are further welded between the upper chord (101) and the lower chord (103).
3. The weathering steel all-welded steel truss girder of claim 1, wherein: a cross bar (105) is welded between the adjacent web members (102).
4. The weathering steel all-welded steel truss girder of claim 3, wherein: the two ends of the cross rod (105) are welded with connecting rods (106), and the other ends of the two connecting rods (106) are welded on the lower chord (103) in an intersecting manner.
5. The weathering steel all-welded steel truss girder of claim 1, wherein: the web members (102) are in a head-to-tail connection shape, and the middle parts of the web members are not crossed.
6. The weathering steel all-welded steel truss girder of claim 1, wherein: the web members (102) are in a cross shape with the middle parts connected end to end.
7. The weathering steel all-welded steel truss girder of claim 1, wherein: the upper chord (101), the web members (102) and the lower chord (103) are all made of weather-resistant steel.
8. The weathering steel all-welded steel truss girder of claim 1, wherein: and a stiffening structure is further arranged on the steel truss structure (1).
9. The weathering steel all-welded steel truss according to claim 8, wherein: the stiffening structure is an arch stiffening structure (11) with the middle part higher than the two ends.
10. The weathering steel all-welded steel truss according to claim 9, characterized in that: the stiffening structure is a curved chord stiffening structure (12) with the middle part lower than the two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911148176.0A CN111218888A (en) | 2019-11-21 | 2019-11-21 | All-welded weather-resistant steel truss girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911148176.0A CN111218888A (en) | 2019-11-21 | 2019-11-21 | All-welded weather-resistant steel truss girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111218888A true CN111218888A (en) | 2020-06-02 |
Family
ID=70810138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911148176.0A Pending CN111218888A (en) | 2019-11-21 | 2019-11-21 | All-welded weather-resistant steel truss girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111218888A (en) |
-
2019
- 2019-11-21 CN CN201911148176.0A patent/CN111218888A/en active Pending
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