CN111254805B - Steel box girder of steel structure bridge - Google Patents
Steel box girder of steel structure bridge Download PDFInfo
- Publication number
- CN111254805B CN111254805B CN202010159774.4A CN202010159774A CN111254805B CN 111254805 B CN111254805 B CN 111254805B CN 202010159774 A CN202010159774 A CN 202010159774A CN 111254805 B CN111254805 B CN 111254805B
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- steel frame
- transverse
- longitudinal
- steel
- welded
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 186
- 239000010959 steel Substances 0.000 title claims abstract description 186
- 238000005192 partition Methods 0.000 claims abstract description 41
- 238000003466 welding Methods 0.000 claims description 34
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 4
- 230000002146 bilateral effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- 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 the following components: bottom plate, diaphragm, longitudinal baffle and connection steelframe subassembly, the bilateral symmetry integrated into one piece of bottom plate has two inclined web, and the top of two inclined web all has the curb plate that outside level extends. 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 an intersecting manner, and the longitudinal supporting steel frame in the connecting steel frame assembly is matched with the supporting plates to support the top end side plates of the inclined webs, so that the inclined webs on two sides of the bottom plate are supported, the phenomenon of buckling damage of the inclined webs is effectively prevented, meanwhile, when the steel box girder is hoisted from two sides, the longitudinal supporting steel frame, the first transverse steel frame and the second transverse steel frame can be matched for hoisting, the steel box girder is prevented from being hoisted under partial stress or unexpected bending due to hoisting tension, the whole steel box girder is hoisted, and the stability of the steel box girder during hoisting is improved.
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 steel structure bridges and steel bridges, the assembled steel bridge is widely applied in all parts of the world, the main design concept of the steel structure bridge is to assemble the assembled steel bridge which can bear various loads and different spans by using the least types of unit components, and the assembled steel bridge can be built by totally relying on manpower under special conditions only by using common medium-sized trucks for transportation, and the steel box girder, namely the steel plate box girder, is a common structural form of the large-span bridge. Is commonly used on bridges with larger spans, and is called a steel box girder because of the shape of a box.
At present, a steel box girder used in a steel structure bridge is generally formed by connecting a top plate, a bottom plate, a web plate, a transverse partition plate, a longitudinal partition plate, stiffening ribs and the like in a full-welding mode, and is supported integrally by the transverse partition plate and the longitudinal partition plate, and when being hoisted, the steel box girder is mainly fixedly hoisted from two sides of the steel box girder, so that the hoisting is easy to deform under compression, the hoisting stability is poor, and simultaneously, supporting measures for an inclined web plate and a side plate are lacked, so that the inclined web plate is easy to be crushed and damaged.
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 above purpose, the present invention adopts the following technical scheme: a steel box girder of a steel structure bridge, comprising: the bottom plate, the diaphragm plates, the longitudinal baffle plates and the connecting steel frame component;
Two oblique webs are symmetrically and integrally formed on two sides of the bottom plate, the top ends of the two oblique webs are respectively provided with a side plate extending outwards horizontally, 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 all provided with a plurality of transverse partition plates, the transverse partition plates are equidistantly welded between two inclined webs in the bottom plate, and the longitudinal partition plates are equidistantly and crosswise welded between the transverse partition plates;
The connecting steel frame assembly consists 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 both ends of the first transverse steel frame and the second transverse steel frame penetrate through the inclined webs on both sides of the bottom plate and extend to the outer sides of the inclined webs;
The two longitudinal support steel frames are arranged in total and are respectively connected to the two end positions of the first transverse steel frame and the second transverse steel frame.
As a further description of the above technical solution:
Transverse welding grooves are formed in the axes of the first transverse steel frame and the second transverse steel frame, and longitudinal welding grooves are formed in the first transverse steel frame and the second transverse steel frame at equal intervals.
As a further description of the above technical solution:
The transverse welding groove is sleeved on the diaphragm plate and is welded with the diaphragm plate, and the longitudinal welding groove is sleeved on the longitudinal diaphragm plate and is welded with the longitudinal diaphragm plate.
As a further description of the above technical solution:
two rectangular through holes matched with the first transverse steel frame and the second transverse steel frame for penetrating welding are symmetrically formed in the longitudinal support steel frame.
As a further description of the above technical solution:
And the longitudinal support steel frame is also welded with a support supporting plate, and the surfaces of the support supporting plate and the side plates are mutually attached.
As a further description of the above technical solution:
the device also comprises a web side frame;
The web side frames are provided with two groups, and the two groups of web side frames are equidistantly welded on the outer walls of the inclined webs at the two sides of the bottom plate;
the web side frame comprises supporting ribs and horizontal brackets, the supporting ribs are welded on the outer side shell of the inclined web, and the horizontal brackets are horizontally welded on the top ends of the supporting ribs.
As a further description of the above technical solution:
Rectangular welding grooves are formed in the horizontal brackets, and the rectangular welding grooves are clamped at the bottom of the longitudinal support steel frame and welded with the longitudinal support steel frame.
Advantageous effects
The invention provides a steel box girder of a steel structure bridge. The beneficial effects are as follows:
(1): the steel box girder of the steel structure bridge is characterized in that a connecting steel frame assembly is arranged on the inner side of the steel box girder, a first transverse steel frame and a second transverse steel frame in the connecting steel frame assembly are welded with transverse partition plates and longitudinal partition plates welded in a crossing mode, the two ends of the first transverse steel frame and the second transverse steel frame, which are located on the outer sides of the inclined webs, are respectively connected with a longitudinal supporting steel frame, the longitudinal supporting steel frames are matched with supporting plates to support side plates on the top ends of the inclined webs, the inclined webs on the two sides of the bottom plate are supported, the inclined webs are effectively prevented from being crushed and damaged, and meanwhile when the steel box girder is hoisted from the two sides, the longitudinal supporting steel frames, the first transverse steel frames and the second transverse steel frames can be matched to hoist, so that the steel box girder is prevented from being hoisted to be pulled to be subjected to local stress or unexpected bending, and the whole hoisting of the steel box girder is realized, and the stability of the hoisting is improved.
(2): The steel box girder of the steel structure bridge is provided with the web side frames, the supporting ribs in the web side frames can further strengthen the strength of the inclined web, and the horizontal brackets at the top ends of the supporting ribs in the web side frames are welded with the bottom of the longitudinal supporting steel frame through the rectangular welding grooves on the horizontal brackets, so that the secondary support of the side plates is realized, and the strength of the side plates is further enhanced.
(3): The steel box girder of the steel structure bridge is characterized in that a first transverse steel frame and a second transverse steel frame in a connecting steel frame assembly are welded with transverse partition plates and longitudinal partition plates which are welded in a crossing manner through transverse welding grooves and longitudinal welding grooves on the first transverse steel frame and the second transverse steel frame, and a longitudinal supporting steel frame in the connecting steel frame assembly is welded with a horizontal bracket on a web side frame, so that the integral strength of the steel box girder is enhanced, and the steel box girder is prevented from being distorted.
Drawings
Fig. 1 is a schematic diagram 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 view of a first horizontal steel frame according to the present invention;
FIG. 4 is a schematic view of a longitudinal support steel frame according to the present invention;
FIG. 5 is a schematic view of a connection structure between a web side frame and a longitudinal support steel frame according to the present invention.
Legend description:
1. A bottom plate; 2. a sloping web; 21. a side plate; 3. a diaphragm; 4. a longitudinal partition; 5. a top plate; 6. connecting a steel frame assembly; 61. a first transverse steel frame; 62. the second transverse steel frame; 63. a longitudinal support steel frame; 64. a transverse welding groove; 65. a longitudinal welding groove; 66. rectangular through holes; 67. a supporting pallet; 7. a web side frame; 71. support ribs; 72. a horizontal bracket; 73. rectangular welding grooves.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1-5, a steel box girder of a steel structure bridge, comprising: the bottom plate 1, the diaphragm plates 3, the longitudinal diaphragm plates 4 and the connecting steel frame assembly 6;
Two oblique webs 2 are symmetrically and integrally formed on two sides of the bottom plate 1, the top ends of the two oblique webs 2 are respectively provided with a side plate 21 which extends outwards horizontally, 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 all provided with a plurality of, the arrangement of the transverse partition plates 3 can prevent the steel box girder from being distorted and transversely bent, the transverse partition plates 3 are equidistantly welded between the two inclined webs 2 in the bottom plate 1, and the longitudinal partition plates 4 are equidistantly and crosswise welded between the transverse partition plates 3;
The connecting steel frame assembly 6 consists 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 the second transverse steel frame 62 penetrate through the inclined webs 2 at two sides of the bottom plate 1 and extend to the outer sides of the inclined webs 2;
The two longitudinal support steel frames 63 are provided in total, and the two longitudinal support steel frames 63 are respectively connected to the two ends of the first transverse steel frame 61 and the second transverse steel frame 62.
The axes of the first transverse steel frame 61 and the second transverse steel frame 62 are respectively provided with a transverse welding groove 64, and the axes of the first transverse steel frame 61 and the second transverse steel frame 62 are also provided with longitudinal welding grooves 65 at equal intervals.
The transverse welding groove 64 is sleeved on the diaphragm plate 3 and is welded with the diaphragm plate 3, and the longitudinal welding groove 65 is sleeved on the longitudinal diaphragm plate 4 and is 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 crossing way through the transverse welding grooves 64 and the longitudinal welding grooves 65 on the first transverse steel frame and the second transverse steel frame, so that the strength of the transverse partition plates 3 and the longitudinal partition plates 4 which are welded in the crossing way can be enhanced, the welding bending deformation of the transverse partition plates 3 and the longitudinal partition plates 4 which are welded in the crossing way is prevented, and the integral 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 support steel frame 63.
The longitudinal support steel frame 63 is also welded with a support pallet 67, and the surfaces of the support pallet 67 and the side plates 21 are mutually attached.
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 an intersecting manner, the two ends of the outer sides of the inclined webs 2 are respectively connected with the longitudinal support steel frames 63, the longitudinal support steel frames 63 cooperate with the support supporting plates 67 to support the top end side plates 21 of the inclined webs 2, the inclined webs 2 on two sides of the bottom plate 1 are supported, the inclined webs 2 are effectively prevented from being crushed and damaged, and meanwhile when the steel box girder is hoisted from two sides, the longitudinal support steel frames 63, the first transverse steel frame 61 and the second transverse steel frame 62 can be matched for hoisting, so that the steel box girder is prevented from being hoisted under partial stress or unexpected bending caused by hoisting tension, the steel box girder is hoisted integrally, and the stability of the hoisting is improved.
Also comprises a web side frame 7;
the web side frames 7 are provided with two groups, and the two groups of web side frames 7 are equidistantly welded on the outer walls of the inclined webs 2 at the two sides of the bottom plate 1;
The web side frame 7 is composed of a support rib 71 and a horizontal bracket 72, and the support rib 71 is welded on the outer side shell of the inclined web 2, and the horizontal bracket 72 is welded on the top end of the support rib 71 horizontally.
The horizontal bracket 72 is provided with a rectangular welding groove 73, and the rectangular welding groove 73 is clamped at the bottom of the longitudinal support steel frame 63 and is welded with the longitudinal support steel frame 63.
The support ribs 71 in the web side frames 7 can further enhance the strength of the inclined web 2, and the horizontal brackets 72 at the top ends of the support ribs 71 in the web side frames 7 are welded with the bottom of the longitudinal support steel frame 63 through the rectangular welding grooves 73 on the horizontal brackets 72, so that the secondary support of the side plates 21 is realized, and the strength of the side plates 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 crossing way through the transverse welding grooves 64 and the longitudinal welding grooves 65 on the connecting steel frame assembly 6, and the longitudinal supporting steel frame 63 in the connecting steel frame assembly 6 is welded with the horizontal brackets 72 on the web side frames 7, so that the integral strength of the steel box girder is enhanced, and the steel box girder is prevented from being distorted.
In the description herein, reference to the terms "one embodiment," "example," "specific example," and the like, means 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, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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 foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (3)
1. A steel box girder of a steel structure bridge, comprising: the device comprises a bottom plate (1), a diaphragm plate (3), a longitudinal diaphragm plate (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 outwards horizontally 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 all provided with a plurality of, the transverse partition plates (3) are equidistantly welded between the two inclined webs (2) in the bottom plate (1), and the longitudinal partition plates (4) are equidistantly and crosswise welded between the transverse partition plates (3);
The connecting steel frame assembly (6) consists 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 the second transverse steel frame (62) penetrate through inclined webs (2) on two sides of the bottom plate (1) and extend to the outer sides of the inclined webs (2);
The two longitudinal support steel frames (63) are arranged in total, and the two longitudinal support steel frames (63) are respectively connected to the two ends of the first transverse steel frame (61) and the two ends of the second transverse steel frame (62);
The axes of the first transverse steel frame (61) and the second transverse steel frame (62) are respectively provided with a transverse welding groove (64), and the first transverse steel frame (61) and the second transverse steel frame (62) are also equidistantly provided with longitudinal welding grooves (65);
A supporting plate (67) is welded on the longitudinal supporting steel frame (63), and the surfaces of the supporting plate (67) and the side plates (21) are mutually attached;
the steel box girder also comprises a web side frame (7);
Two groups of web side frames (7) are arranged in total, and the two groups of web side frames (7) are equidistantly welded on the outer walls of the inclined webs (2) at the two sides of the bottom plate (1);
The web side frame (7) consists of supporting ribs (71) and horizontal brackets (72), the supporting ribs (71) are welded on the outer side shell of the inclined web (2), and the horizontal brackets (72) are horizontally welded on the top ends of the supporting ribs (71);
Rectangular welding grooves (73) are formed in the horizontal brackets (72), and the rectangular welding grooves (73) are clamped at the bottom of the longitudinal support steel frame (63) and welded with the longitudinal support steel frame (63).
2. A steel box girder of a steel structure bridge according to claim 1, characterized in that 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).
3. The steel box girder of the steel structure bridge according to claim 1, wherein 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 on 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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| Publication Number | Publication Date |
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| CN111254805A CN111254805A (en) | 2020-06-09 |
| CN111254805B true CN111254805B (en) | 2024-09-17 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111644731B (en) * | 2020-06-15 | 2022-08-16 | 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 | Longitudinal connection structure and construction method of profiled steel frame in tunnel |
| 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 |
| CN112359702B (en) * | 2020-11-02 | 2021-08-27 | 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 |
| CN115467225A (en) * | 2022-10-24 | 2022-12-13 | 中船大连造船厂产业发展有限公司 | High-strength steel box girder structure for steel structure and construction method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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| 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 |
| CN106087709B (en) * | 2016-08-08 | 2017-08-29 | 中北大学 | A kind of steel box-girder method in 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 |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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