CN111254805A - Steel box girder of steel structure bridge - Google Patents
Steel box girder of steel structure bridge Download PDFInfo
- Publication number
- CN111254805A CN111254805A CN202010159774.4A CN202010159774A CN111254805A CN 111254805 A CN111254805 A CN 111254805A CN 202010159774 A CN202010159774 A CN 202010159774A CN 111254805 A CN111254805 A CN 111254805A
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- steel frame
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 167
- 239000010959 steel Substances 0.000 title claims abstract description 167
- 238000005192 partition Methods 0.000 claims abstract description 33
- 238000003466 welding Methods 0.000 claims description 30
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 230000002146 bilateral effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Classifications
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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
-
- 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)
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a steel box girder of a steel structure bridge, which comprises: bottom plate, cross slab, vertical baffle and connection steelframe subassembly, the bilateral symmetry integrated into one piece of bottom plate has two oblique webs, and the top of two oblique webs all has the curb plate that extends to the outside level. According to the invention, the first transverse steel frame and the second transverse steel frame in the connecting steel frame assembly are welded with the transverse partition plates and the longitudinal partition plates which are welded in a cross mode, and the longitudinal supporting steel frame in the connecting steel frame assembly is matched with the supporting plate to support the top end side plates of the inclined web plates, so that the inclined web plates on two sides of the bottom plate are supported, the phenomenon of crumpling and damage of the inclined web plates is effectively prevented, meanwhile, when the steel box girder is hoisted from two sides, the connecting steel frame can be matched with the longitudinal supporting steel frame, the first transverse steel frame and the second transverse steel frame to hoist the steel box girder, the steel box girder is prevented from being pulled to generate local stress or accidental bending, the whole steel box girder is hoist.
Description
Technical Field
The invention relates to the technical field of steel structure bridges, in particular to a steel box girder of a steel structure bridge.
Background
The main bearing structure of the steel structure bridge adopts steel bridges, namely the steel structure bridge and the steel bridge, and the assembled steel bridge is widely applied all over the world, the main design concept of the steel structure bridge is that the assembled steel bridge capable of bearing various loads and different spans is assembled by using the minimum kinds of unit members, and only general medium-sized trucks are needed for transportation, the steel box girder can be built by manpower under special conditions, and the steel box girder is called as a steel plate box girder and is a common structural form of a large-span bridge. The steel box girder is generally used on bridges with large span and is called as a steel box girder because the steel box girder is shaped like a box.
At present the steel box girder that uses in steel structure bridge generally by the roof, the bottom plate, the web, and the cross slab, vertical baffle and stiffening rib etc. are formed by connecting through the all-welded mode, only support steel box girder wholly through cross slab and vertical baffle, mostly fix the hoist and mount from steel box girder both sides during the hoist and mount, easily lead to hoist and mount compressive deformation, and the stability of hoist and mount is relatively poor, lack the supporting measure to oblique web and curb plate simultaneously, the oblique web takes place to crumple the destruction phenomenon easily appears.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a steel box girder of a steel structure bridge.
In order to achieve the purpose, the invention adopts the following technical scheme: a steel box girder of a steel structure bridge, comprising: the bottom plate, the transverse partition plate, the longitudinal partition plate and the connecting steel frame assembly are arranged on the bottom plate;
two oblique webs are symmetrically and integrally formed on two sides of the bottom plate, side plates horizontally extending outwards are arranged at the top ends of the two oblique webs, and a top plate is arranged between the top ends of the two oblique webs on the bottom plate;
the transverse partition plates and the longitudinal partition plates are arranged in a plurality, the transverse partition plates are welded in the bottom plate at equal intervals and located between the two inclined webs, and the longitudinal partition plates are welded between the transverse partition plates at equal intervals in an intersecting manner;
the connecting steel frame assembly is composed of a first transverse steel frame, a second transverse steel frame and a longitudinal supporting steel frame, the first transverse steel frame and the second transverse steel frame are welded on the transverse partition plate in parallel, and two ends of the first transverse steel frame and two ends of the second transverse steel frame penetrate through the inclined web plates on two sides of the bottom plate and extend to the outer sides of the inclined web plates;
the two longitudinal supporting steel frames are respectively connected to two ends of the first transverse steel frame and the second transverse steel frame.
As a further description of the above technical solution:
horizontal welding groove has all been seted up on the axis of first horizontal steelframe and the horizontal steelframe of second, and still the equidistance has seted up vertical welding groove on first horizontal steelframe and the horizontal steelframe of second.
As a further description of the above technical solution:
the transverse welding groove is sleeved on the transverse clapboard and welded with the transverse clapboard, and the longitudinal welding groove is sleeved on the longitudinal clapboard and welded with the longitudinal clapboard.
As a further description of the above technical solution:
two rectangular through holes which are matched with the first transverse steel frame and the second transverse steel frame for penetrating welding are symmetrically formed in the longitudinal supporting steel frame.
As a further description of the above technical solution:
and a support supporting plate is further welded on the longitudinal support steel frame, and the support supporting plate is mutually attached to the surface of the side plate.
As a further description of the above technical solution:
also includes a web sideframe;
two groups of web side frames are arranged, and the two groups of web side frames are welded on the outer walls of the inclined webs on the two sides of the bottom plate at equal intervals;
the web plate side frame is composed of support ribs and a horizontal bracket, the support ribs are welded on the outer shell of the inclined web plate, and the horizontal bracket is horizontally welded at the top ends of the support ribs.
As a further description of the above technical solution:
the horizontal bracket is provided with a rectangular welding groove, and the rectangular welding groove is connected to the bottom of the longitudinal support steel frame in a clamping mode and is welded with the longitudinal support steel frame.
Advantageous effects
The invention provides a steel box girder of a steel structure bridge. The method has the following beneficial effects:
(1): this steel box girder of steel structure bridge is through setting up the connection steelframe subassembly in steel box girder inboard, first horizontal steelframe and the horizontal steelframe of second in the connection steelframe subassembly and intercrossing welded cross slab and longitudinal baffle welding, and first horizontal steelframe and the horizontal steelframe of second lie in oblique web outside both ends and all are connected with the longitudinal support steelframe, longitudinal support steelframe cooperation supporting plate supports oblique web top curb plate, the realization supports the oblique web of bottom plate both sides, effectually prevent that oblique web from taking place to crumple and destroy the phenomenon, when hoist from steel box girder both sides simultaneously, can cooperate longitudinal support steelframe and first horizontal steelframe and second to transversely hoist, prevent that steel box girder hoist and mount from drawing local stress or unexpected bending of steelframe appear, and realize wholly hoisting steel box girder, stability when improving hoist and mount.
(2): according to the steel box girder of the steel structure bridge, the web side frames are arranged, the supporting ribs in the web side frames can further enhance the strength of the inclined webs, the horizontal brackets at the top ends of the supporting ribs in the web side frames are welded with the bottoms of the longitudinal supporting steel frames through the rectangular welding grooves in the horizontal brackets, so that secondary supporting is performed on the side plates, and the strength of the side plates is further enhanced.
(3): according to the steel box girder of the steel structure bridge, a first transverse steel frame and a second transverse steel frame in a connecting steel frame assembly are welded with cross plates and longitudinal plates which are welded in a cross mode through transverse welding grooves and longitudinal welding grooves on the first transverse steel frame and the second transverse steel frame, and a longitudinal support steel frame in the connecting steel frame assembly is welded with a horizontal bracket on a web side frame, so that the overall strength of the steel box girder is enhanced, and the steel box girder is prevented from being distorted.
Drawings
FIG. 1 is a schematic view of the overall structure of a steel box girder of a steel structure bridge according to the present invention;
FIG. 2 is a schematic view of a connecting steel frame assembly according to the present invention;
FIG. 3 is a schematic structural view of a first transverse steel frame according to the present invention;
FIG. 4 is a schematic structural view of the longitudinal support frame of the present invention;
FIG. 5 is a schematic view of the connection structure between the webbed sideframe and the longitudinal support steel frame of the present invention.
Illustration of the drawings:
1. a base plate; 2. a diagonal web; 21. a side plate; 3. a diaphragm plate; 4. a longitudinal partition plate; 5. a top plate; 6. connecting the steel frame components; 61. a first transverse steel frame; 62. a second transverse steel frame; 63. longitudinally supporting the steel frame; 64. transversely welding the groove; 65. longitudinally welding a groove; 66. a rectangular through hole; 67. a support pallet; 7. a web sideframe; 71. a support rib; 72. a horizontal bracket; 73. a rectangular weld groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1 to 5, a steel box girder of a steel structural bridge, includes: the steel frame connecting structure comprises a bottom plate 1, a transverse clapboard 3, a longitudinal clapboard 4 and a connecting steel frame assembly 6;
two oblique webs 2 are symmetrically and integrally formed on two sides of the bottom plate 1, side plates 21 extending horizontally outwards are arranged at the top ends of the two oblique webs 2, and a top plate 5 is arranged between the top ends of the two oblique webs 2 on the bottom plate 1;
the transverse partition plates 3 and the longitudinal partition plates 4 are arranged in plurality, the plurality of transverse partition plates 3 can prevent the steel box girder from being distorted and transversely bent, the plurality of transverse partition plates 3 are equidistantly welded in the bottom plate 1 and positioned between the two inclined web plates 2, and the plurality of longitudinal partition plates 4 are equidistantly and crossly welded between the transverse partition plates 3;
the connecting steel frame assembly 6 is composed of a first transverse steel frame 61, a second transverse steel frame 62 and a longitudinal supporting steel frame 63, the first transverse steel frame 61 and the second transverse steel frame 62 are welded on the diaphragm plate 3 in parallel, and two ends of the first transverse steel frame 61 and two ends of the second transverse steel frame 62 penetrate through the inclined web plates 2 on two sides of the bottom plate 1 and extend to the outer sides of the inclined web plates 2;
the number of the longitudinal support steel frames 63 is two, and the two longitudinal support steel frames 63 are respectively connected to two end positions of the first transverse steel frame 61 and the second transverse steel frame 62.
The transverse welding groove 64 is sleeved on the diaphragm plate 3 and welded with the diaphragm plate 3, and the longitudinal welding groove 65 is sleeved on the longitudinal diaphragm plate 4 and welded with the longitudinal diaphragm plate 4.
The first transverse steel frame 61 and the second transverse steel frame 62 are welded with the transverse partition plates 3 and the longitudinal partition plates 4 which are welded in a cross mode through the transverse welding grooves 64 and the longitudinal welding grooves 65, so that the strength of the transverse partition plates 3 and the longitudinal partition plates 4 which are welded in a cross mode can be enhanced, the transverse partition plates 3 and the longitudinal partition plates 4 which are welded in a cross mode are prevented from being welded and bent, and the overall strength of the steel box girder is improved.
Two rectangular through holes 66 which are matched with the first transverse steel frame 61 and the second transverse steel frame 62 for penetrating welding are symmetrically formed in the longitudinal supporting steel frame 63.
The longitudinal support steel frame 63 is further welded with a support supporting plate 67, and the support supporting plate 67 is attached to the surface of the side plate 21.
First horizontal steelframe 61 and the horizontal steelframe 62 of second in the connection steelframe subassembly 6 weld with intercrossing welded cross slab 3 and longitudinal baffle 4, and first horizontal steelframe 61 and the horizontal steelframe 62 of second lie in 2 outside both ends of oblique web and all be connected with longitudinal support steelframe 63, longitudinal support steelframe 63 cooperates support layer board 67 to support 2 top curb plates 21 of oblique web, the realization supports oblique web 2 of bottom plate 1 both sides, effectual prevent that oblique web 2 from taking place to crumple the destruction phenomenon, when hoist from the steel box girder both sides simultaneously, can cooperate longitudinal support steelframe 63 and first horizontal steelframe 61 and the horizontal 62 of second to hoist, prevent that the steel box girder hoist and mount from drawing local stress or the unexpected bending of steelframe appear, and realize hoisting the whole steel box girder, stability when improving hoist.
Also includes a web side frame 7;
two groups of web side frames 7 are arranged, and the two groups of web side frames 7 are welded on the outer walls of the inclined webs 2 on the two sides of the bottom plate 1 at equal intervals;
the web side frame 7 is composed of a support rib 71 and a horizontal bracket 72, the support rib 71 is welded on the outer shell of the inclined web 2, and the horizontal bracket 72 is horizontally welded on the top end of the support rib 71.
The horizontal bracket 72 is provided with a rectangular welding groove 73, and the rectangular welding groove 73 is connected to the bottom of the longitudinal support steel frame 63 in a clamping manner and is welded with the longitudinal support steel frame 63.
The supporting ribs 71 in the web side frame 7 can further enhance the strength of the inclined web 2, and the horizontal brackets 72 at the top ends of the supporting ribs 71 in the web side frame 7 are welded with the bottom of the longitudinal supporting steel frame 63 through the rectangular welding grooves 73 on the horizontal brackets 72, so that the side plate 21 is secondarily supported, and the strength of the side plate 21 is further enhanced.
Furthermore, the first transverse steel frame 61 and the second transverse steel frame 62 in the connecting steel frame assembly 6 are welded with the transverse partition plates 3 and the longitudinal partition plates 4 which are welded in a cross mode through the transverse welding grooves 64 and the longitudinal welding grooves 65, and the longitudinal supporting steel frames 63 in the connecting steel frame assembly 6 are welded with the horizontal brackets 72 on the web side frames 7, so that the overall strength of the steel box girder is enhanced, and the steel box girder is prevented from being distorted.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The utility model provides a steel box girder of steel construction bridge which characterized in that includes: the steel frame connecting structure comprises a bottom plate (1), transverse partition plates (3), longitudinal partition plates (4) and a connecting steel frame assembly (6);
two oblique webs (2) are symmetrically and integrally formed on two sides of the bottom plate (1), side plates (21) horizontally extending outwards are arranged at the top ends of the two oblique webs (2), and a top plate (5) is arranged between the top ends of the two oblique webs (2) on the bottom plate (1);
the transverse partition plates (3) and the longitudinal partition plates (4) are arranged in plurality, the transverse partition plates (3) are welded between the two inclined webs (2) in the bottom plate (1) at equal intervals, and the longitudinal partition plates (4) are welded between the transverse partition plates (3) at equal intervals in an intersecting manner;
the connecting steel frame assembly (6) is composed of a first transverse steel frame (61), a second transverse steel frame (62) and a longitudinal supporting steel frame (63), the first transverse steel frame (61) and the second transverse steel frame (62) are welded on the transverse partition plate (3) in parallel, and two ends of the first transverse steel frame (61) and two ends of the second transverse steel frame (62) penetrate through the inclined webs (2) on two sides of the bottom plate (1) and extend to the outer sides of the inclined webs (2);
the number of the longitudinal supporting steel frames (63) is two, and the two longitudinal supporting steel frames (63) are connected to the positions of two ends of the first transverse steel frame (61) and the second transverse steel frame (62) respectively.
2. The steel box girder of steel structure bridge according to claim 1, characterized in that the first transverse steel frame (61) and the second transverse steel frame (62) are provided with transverse welding grooves (64) on the axis thereof, and the first transverse steel frame (61) and the second transverse steel frame (62) are further provided with longitudinal welding grooves (65) at equal intervals.
3. The steel box girder of a steel structure bridge according to claim 2, characterized in that the transverse welding groove (64) is sleeved on the diaphragm (3) and welded with the diaphragm (3), and the longitudinal welding groove (65) is sleeved on the longitudinal diaphragm (4) and welded with the longitudinal diaphragm (4).
4. The steel box girder of a steel structural bridge according to claim 1, characterized in that two rectangular through holes (66) for being matched with the first transverse steel frame (61) and the second transverse steel frame (62) to be used in a penetrating welding mode are symmetrically formed in the longitudinal supporting steel frame (63).
5. The steel box girder of a steel structural bridge according to claim 1, wherein a support pallet (67) is further welded to the longitudinal support steel frame (63), and the support pallet (67) is attached to the surface of the side plate (21).
6. The steel box girder of a steel structural bridge according to claim 1, further comprising a web side frame (7);
two groups of web side frames (7) are arranged, and the two groups of web side frames (7) are welded on the outer wall of the inclined web (2) on two sides of the bottom plate (1) at equal intervals;
the web plate side frame (7) is composed of supporting ribs (71) and horizontal brackets (72), the supporting ribs (71) are welded on an outer shell of the inclined web plate (2), and the horizontal brackets (72) are horizontally welded at the top ends of the supporting ribs (71).
7. The steel box girder of steel structure bridge according to claim 6, characterized in that the horizontal bracket (72) is provided with a rectangular welding groove (73), and the rectangular welding groove (73) is connected to the bottom of the longitudinal support steel frame (63) in a clamping manner and is welded to the longitudinal support steel frame (63).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010159774.4A CN111254805B (en) | 2020-03-10 | 2020-03-10 | Steel box girder of steel structure bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010159774.4A CN111254805B (en) | 2020-03-10 | 2020-03-10 | Steel box girder of steel structure bridge |
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| CN111254805A true CN111254805A (en) | 2020-06-09 |
| CN111254805B CN111254805B (en) | 2024-09-17 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111644731A (en) * | 2020-06-15 | 2020-09-11 | 宝鸡中铁宝桥天元实业发展有限公司 | Method for reducing welding deformation in manufacturing of steel-concrete composite bridge |
| CN111706368A (en) * | 2020-06-30 | 2020-09-25 | 中铁二院工程集团有限责任公司 | Tunnel inner section steel frame longitudinal connection structure and construction method |
| CN111975278A (en) * | 2020-10-26 | 2020-11-24 | 中铁隧道局集团路桥工程有限公司 | Splicing welding jig frame for steel box girder and splicing welding process thereof |
| CN112359702A (en) * | 2020-11-02 | 2021-02-12 | 中铁五局集团第一工程有限责任公司 | Steel box girder bridge and manufacturing method thereof |
| CN113737626A (en) * | 2021-09-26 | 2021-12-03 | 烟建集团有限公司 | Bridge steel structure box girder |
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| KR101221419B1 (en) * | 2012-05-08 | 2013-01-21 | 박상현 | Steel box girder having upper-flange of layer-structure, and bridge and construction method of bridge containing thereof |
| CN106087709A (en) * | 2016-08-08 | 2016-11-09 | 中北大学 | A kind of steel box-girder Cross section Design of explosion-proof percussion |
| CN110042770A (en) * | 2019-04-26 | 2019-07-23 | 南京工大桥隧与轨道交通研究院有限公司 | A method of using the original bridge of external prestressing steel Shu Tuokuan in length and breadth |
| CN209923768U (en) * | 2019-02-15 | 2020-01-10 | 浙江中南建设集团有限公司 | Improved steel box girder structure |
| CN212200015U (en) * | 2020-03-10 | 2020-12-22 | 江苏宝力重工科技有限公司 | Steel box girder of steel structure bridge |
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2020
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| KR101221419B1 (en) * | 2012-05-08 | 2013-01-21 | 박상현 | Steel box girder having upper-flange of layer-structure, and bridge and construction method of bridge containing thereof |
| CN106087709A (en) * | 2016-08-08 | 2016-11-09 | 中北大学 | A kind of steel box-girder Cross section Design of explosion-proof percussion |
| CN209923768U (en) * | 2019-02-15 | 2020-01-10 | 浙江中南建设集团有限公司 | Improved steel box girder structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111644731A (en) * | 2020-06-15 | 2020-09-11 | 宝鸡中铁宝桥天元实业发展有限公司 | Method for reducing welding deformation in manufacturing of steel-concrete composite bridge |
| CN111706368A (en) * | 2020-06-30 | 2020-09-25 | 中铁二院工程集团有限责任公司 | Tunnel inner section steel frame longitudinal connection structure and construction method |
| CN111975278A (en) * | 2020-10-26 | 2020-11-24 | 中铁隧道局集团路桥工程有限公司 | Splicing welding jig frame for steel box girder and splicing welding process thereof |
| CN111975278B (en) * | 2020-10-26 | 2021-06-04 | 中铁隧道局集团路桥工程有限公司 | Splicing welding jig frame for steel box girder and splicing welding process thereof |
| CN112359702A (en) * | 2020-11-02 | 2021-02-12 | 中铁五局集团第一工程有限责任公司 | Steel box girder bridge and manufacturing method thereof |
| CN113737626A (en) * | 2021-09-26 | 2021-12-03 | 烟建集团有限公司 | Bridge steel structure box girder |
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| Publication number | Publication date |
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| CN111254805B (en) | 2024-09-17 |
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