CN114541249A - Steel-concrete combined beam for crossing railway business line and construction method - Google Patents
Steel-concrete combined beam for crossing railway business line and construction method Download PDFInfo
- Publication number
- CN114541249A CN114541249A CN202210327485.XA CN202210327485A CN114541249A CN 114541249 A CN114541249 A CN 114541249A CN 202210327485 A CN202210327485 A CN 202210327485A CN 114541249 A CN114541249 A CN 114541249A
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- steel
- concrete
- steel box
- box girder
- panel
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- 238000010276 construction Methods 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 94
- 239000010959 steel Substances 0.000 claims abstract description 94
- 230000001681 protective effect Effects 0.000 claims description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 11
- 238000009415 formwork Methods 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000009432 framing Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Images
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
- E01D19/00—Structural or constructional details of 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
- E01D19/00—Structural or constructional details of bridges
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/103—Parapets, railings ; Guard barriers or road-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
- E01D2/04—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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
Abstract
A steel-concrete combination beam crossing a railway business line and a construction method. The steel-concrete combined beam comprises a steel box beam, a steel flange, an integral concrete top plate and a protection structure; the steel-concrete combination beam for the upper-span railway business line and the construction method have the following beneficial effects: 1. the steel-concrete combined beam is in a structural form of a steel box beam and steel flanges, the steel flanges are additionally arranged on two sides of the steel box beam, and the steel flanges and the steel box beam are synchronously processed and formed in a factory, transported to the site and synchronously hoisted in place in combination with the site condition. The steel flange has the protection effect again in having played the template supporting role to can effectively form wholly with whole concrete roof and wholly, bear upper portion load jointly, consequently the structure is firm more stable. 2. The steel box girder and the steel flange are hoisted in place at one time, and no support is needed to be arranged on the site, so that the influence on an operation railway or a road is reduced, the construction is simple, the efficiency is high, the operation is convenient, and the cost is saved.
Description
Technical Field
The invention belongs to the technical field of railway and highway bridge engineering, and particularly relates to a steel-concrete combination beam crossing a railway business line and a construction method.
Background
With the continuous improvement of bridge construction technology, steel-concrete composite beams have been widely applied to railway and highway bridges due to the advantages of large rigidity, excellent material characteristics, convenient and fast construction and the like. The traditional steel-concrete combined beam mainly comprises a steel box beam, a concrete top plate arranged at the top of the steel box beam and concrete flange plates positioned at two sides of the concrete top plate; the construction method comprises the steps that firstly, steel box girders prefabricated in factories are hoisted in place by constructors on site, then full framing or triangular brackets are erected according to site conditions, then formwork installation of the concrete top plate and the concrete flange plate is carried out, then reinforcing steel bars are bound in the formwork, concrete is poured in the formwork, and the formwork and the full framing or the triangular brackets are removed after the concrete is solidified and reaches the designed strength to manufacture the concrete top plate and the concrete flange plate. However, this construction method has the following problems: the method is only suitable for the conditions that the field is wide, the upper-span planned road or road and railway can seal traffic, and the like, but under the condition that the upper-span bridge and the lower railway business line and road are in the same direction and cannot be sealed, the influence on the railway business line and the road is large, the safety risk is high, the cost is high, and the construction efficiency is low.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a steel-concrete composite girder and a construction method thereof for a railway business line.
In order to achieve the aim, the steel-concrete combined beam of the upper-span railway business line comprises a steel box beam, a steel flange, an integral concrete top plate and a protective structure; the two steel flanges are respectively connected to the upper parts of the two sides of the steel box girder, and each steel flange comprises a panel, a bracket girder and a reinforcing rib; the inner side edge of the panel is connected with the upper end of the side surface of the steel box girder, and the outer side of the panel extends upwards to form an edge; the bracket beams are arranged along the transverse direction of the steel box beam, the upper ends of the plurality of bracket beams are arranged on the bottom surface of the panel at intervals along the longitudinal direction of the panel, and meanwhile, the inner ends of the bracket beams are connected to the upper parts of the side surfaces of the steel box beam; the reinforcing ribs are arranged along the longitudinal direction of the steel box girder, and the lower ends of the reinforcing ribs are arranged on the top surface of the panel at intervals along the transverse direction of the panel; the integral concrete top plate is formed on the top of the steel box girder and the panel of the steel flange in a cast-in-place mode; the lower end of the protective structure is fixed on the outer edge of the steel flange.
The protective structure comprises a railing and a closed aluminum buckle plate, wherein the closed aluminum buckle plate is arranged at the outer side part of the railing on site; the height of the railing is 1.2 m, and the height of the sealed aluminum buckle plate is 1.5 m.
And the steel box girder is filled with the concrete for counterweight.
The construction method of the steel-concrete combined beam of the upper cross-railway business line provided by the invention comprises the following steps in sequence:
1) firstly, respectively manufacturing a steel box girder and steel flanges by workers in a processing plant, and then respectively connecting the two steel flanges to the upper parts of the two sides of the steel box girder;
2) fixing the lower end of the guardrail on the protective structure at the outer side part of the steel flange;
3) after the lower structure of the railway or highway bridge and the stone concrete reach the design strength of 75%, carrying out field hoisting operation on the assembly consisting of the steel box girder, the steel flange and the railing in the construction skylight period;
4) after the guardrail is hoisted in place, a closed aluminum buckle plate is immediately installed at the outer side part of the guardrail so as to completely close the protective railings at the two sides;
5) grouting the support on the railway or highway bridge, and pouring concrete for matching into the steel box girder from the top pouring hole after the strength of the support reaches 100%;
6) the method comprises the following steps of erecting a template of the integral concrete top plate and binding steel bars on the top of the steel box girder and the panel of the steel flange, then pouring concrete in the template, and removing the template after the concrete is solidified and reaches the designed strength to form the integral concrete top plate, thereby forming a more stable structure system.
The steel-concrete combined beam for the upper-span railway business line and the construction method have the following beneficial effects:
1. the steel-concrete combined beam is in a structural form of a steel box beam and steel flanges, the steel flanges are additionally arranged on two sides of the steel box beam, and the steel flanges and the steel box beam are synchronously processed and formed in a factory, transported to the site and synchronously hoisted in place in combination with the site condition. The steel flange has the protection effect again in having played the template supporting role to can effectively form wholly with whole concrete roof and wholly, bear upper portion load jointly, consequently the structure is firm more stable.
2. The steel box girder and the steel flange are hoisted in place at one time, and no support is needed to be arranged on the site, so that the influence on an operation railway or a road is reduced, the construction is simple, the efficiency is high, the operation is convenient, and the cost is saved.
Drawings
Fig. 1 is a schematic transverse cross-sectional view of a steel-concrete composite beam for an up-crossing railway business line provided by the invention.
Fig. 2 is a plan view of a steel-concrete composite beam provided by the present invention.
Fig. 3 is a flow chart of a construction method of the steel-concrete composite beam provided by the invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
As shown in fig. 1-2, the steel-concrete composite beam for an up-span railway business line provided by the invention comprises a steel box girder 1, a steel flange 2, an integral concrete roof 3 and a protective structure 4; wherein, two steel flanges 2 are respectively connected with the upper parts of two sides of the steel box girder 1, and each steel flange 2 comprises a panel 5, a bracket girder 6 and a reinforcing rib 7; the inner side edge of the panel 5 is connected with the upper end of the side surface of the steel box girder 1, and the outer side of the panel extends upwards to form an edge; the bracket beams 6 are arranged along the transverse direction of the steel box beam 1, the upper ends of the plurality of bracket beams 6 are arranged on the bottom surface of the panel 5 at intervals along the longitudinal direction of the panel 5, and meanwhile, the inner ends of the bracket beams 6 are connected to the upper part of the side surface of the steel box beam 1; the reinforcing ribs 7 are arranged along the longitudinal direction of the steel box girder 1, and the lower ends of a plurality of reinforcing ribs 7 are arranged on the top surface of the panel 5 at intervals along the transverse direction of the panel 5; the integral concrete top plate 3 is formed on the top of the steel box girder 1 and the panel 5 of the steel flange 2 in a cast-in-place mode; the lower end of the protective structure 4 is fixed on the outer edge of the steel flange 2.
The protective structure 4 comprises a railing 8 and a closed aluminum buckle plate, wherein the closed aluminum buckle plate is arranged at the outer side part of the railing 8 on site; the height of the railing 8 is 1.2 m, and the height of the closed aluminum buckle plate is 1.5 m.
And the steel box girder 1 is filled with the concrete for counterweight.
As shown in fig. 3, the construction method of the steel-concrete composite beam for the upper cross-railway business line provided by the invention comprises the following steps in sequence:
1) firstly, respectively manufacturing a steel box girder 1 and steel flanges 2 in a processing plant by workers, and then respectively connecting the two steel flanges 2 to the upper parts of the two sides of the steel box girder 1;
2) fixing the lower end of a railing 8 on the protective structure 4 at the outer side part of the steel flange 2;
3) after the lower structure of the railway or highway bridge and the stone concrete reach the design strength of 75%, carrying out field hoisting operation on the assembly consisting of the steel box girder 1, the steel flange 2 and the railing 8 in the construction skylight period;
4) after the guardrail is hoisted in place, a closed aluminum buckle plate is immediately installed at the outer side part of the guardrail 8 so as to completely close the protective railings 8 at the two sides;
5) grouting the support on the railway or highway bridge, and pouring concrete for matching into the steel box girder 1 from the top pouring hole after the strength of the support reaches 100%;
6) the formwork of the integral concrete top plate 3 is erected and the steel bars are bound on the top of the steel box girder 1 and the panel 5 of the steel flange 2, then concrete is poured in the formwork, and after the concrete is solidified and reaches the designed strength to form the integral concrete top plate 3, the formwork is removed, so that a more stable structural system is formed.
Claims (4)
1. The utility model provides a go up steel-concrete composite beam of striding railway business line which characterized in that: the steel-concrete combined beam comprises a steel box beam (1), a steel flange (2), an integral concrete top plate (3) and a protective structure (4); wherein, two steel flanges (2) are respectively connected with the upper parts of two sides of the steel box girder (1), and each steel flange (2) comprises a panel (5), a bracket beam (6) and a reinforcing rib (7); the inner side edge of the panel (5) is connected to the upper end of the side face of the steel box girder (1), and the outer side of the panel extends upwards to form an edge; the bracket beams (6) are arranged along the transverse direction of the steel box beam (1), the upper ends of the plurality of bracket beams (6) are arranged on the bottom surface of the panel (5) at intervals along the longitudinal direction of the panel (5), and meanwhile, the inner ends of the bracket beams (6) are connected to the upper part of the side surface of the steel box beam (1); the reinforcing ribs (7) are arranged along the longitudinal direction of the steel box girder (1), and the lower ends of the reinforcing ribs (7) are arranged on the top surface of the panel (5) at intervals along the transverse direction of the panel (5); the integral concrete top plate (3) is formed on the top of the steel box girder (1) and the panel (5) of the steel flange (2) in a cast-in-place mode; the lower end of the protective structure (4) is fixed on the outer side edge of the steel flange (2).
2. The steel-concrete composite beam for crossing over railway business lines according to claim 1, wherein: the protective structure (4) comprises a railing (8) and a closed aluminum buckle plate, wherein the closed aluminum buckle plate is installed at the outer side part of the railing (8) on site; the height of the railing (8) is 1.2 m, and the height of the closed aluminum buckle plate is 1.5 m.
3. The steel-concrete composite beam for crossing over railway business lines according to claim 1, wherein: and the steel box girder (1) is filled with concrete for matching.
4. A construction method of a steel-concrete composite beam for an up-crossing railway business line according to any one of claims 1 to 3, characterized in that: the construction method comprises the following steps in sequence:
1) firstly, workers respectively manufacture a steel box girder (1) and steel flanges (2) in a processing plant, and then respectively connect the two steel flanges (2) to the upper parts of two sides of the steel box girder (1);
2) fixing the lower end of a railing (8) on the protective structure (4) at the outer side part of the steel flange (2);
3) after the lower structure of the railway or highway bridge and the stone concrete reach the design strength of 75%, carrying out on-site hoisting operation on the assembly consisting of the steel box girder (1), the steel flange (2) and the railing (8) in a construction skylight period;
4) after the guardrail is hoisted in place, a closed aluminum buckle plate is immediately installed at the outer side part of the guardrail (8) so as to completely seal the protective railings (8) at the two sides;
5) grouting the upper support of the railway or highway bridge, and pouring concrete for matching into the steel box girder (1) from the top pouring hole after the strength of the support reaches 100%;
6) the method comprises the steps of erecting and binding the formwork of the integral concrete top plate (3) on the top of the steel box girder (1) and the panel (5) of the steel flange (2), then pouring concrete in the formwork, and removing the formwork after the concrete is solidified and reaches the designed strength to form the integral concrete top plate (3), thereby forming a more stable structure system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210327485.XA CN114541249B (en) | 2022-03-30 | 2022-03-30 | Steel-concrete combined beam crossing railway business line and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210327485.XA CN114541249B (en) | 2022-03-30 | 2022-03-30 | Steel-concrete combined beam crossing railway business line and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114541249A true CN114541249A (en) | 2022-05-27 |
| CN114541249B CN114541249B (en) | 2024-03-22 |
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| CN202210327485.XA Active CN114541249B (en) | 2022-03-30 | 2022-03-30 | Steel-concrete combined beam crossing railway business line and construction method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008121288A (en) * | 2006-11-13 | 2008-05-29 | Fuji Ps Corp | Continuous steel plate web bridge and method of constructing continuous steel plate web bridge |
| CN102220741A (en) * | 2011-04-14 | 2011-10-19 | 中铁二十局集团第六工程有限公司 | Steel-concrete composite girder construction technology striding current lines and being parallel to existing lines |
| CN104831635A (en) * | 2015-05-26 | 2015-08-12 | 中铁二十二局集团第三工程有限公司 | Combined H-shaped steel cast-in-situ box beam support adjoining to and overpassing existing lines |
| CN108222051A (en) * | 2018-03-23 | 2018-06-29 | 中铁二院工程集团有限责任公司 | A kind of contact net upright post basic of railway steel reinforced concrete bondbeam and steel reinforced concrete combination bridge |
| US20190316305A1 (en) * | 2018-04-11 | 2019-10-17 | Vellaisamy THAVAMANI PANDI | System for construction of composite u shaped reinforced girders bridge deck and methods thereof |
-
2022
- 2022-03-30 CN CN202210327485.XA patent/CN114541249B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008121288A (en) * | 2006-11-13 | 2008-05-29 | Fuji Ps Corp | Continuous steel plate web bridge and method of constructing continuous steel plate web bridge |
| CN102220741A (en) * | 2011-04-14 | 2011-10-19 | 中铁二十局集团第六工程有限公司 | Steel-concrete composite girder construction technology striding current lines and being parallel to existing lines |
| CN104831635A (en) * | 2015-05-26 | 2015-08-12 | 中铁二十二局集团第三工程有限公司 | Combined H-shaped steel cast-in-situ box beam support adjoining to and overpassing existing lines |
| CN108222051A (en) * | 2018-03-23 | 2018-06-29 | 中铁二院工程集团有限责任公司 | A kind of contact net upright post basic of railway steel reinforced concrete bondbeam and steel reinforced concrete combination bridge |
| US20190316305A1 (en) * | 2018-04-11 | 2019-10-17 | Vellaisamy THAVAMANI PANDI | System for construction of composite u shaped reinforced girders bridge deck and methods thereof |
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| Publication number | Publication date |
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| CN114541249B (en) | 2024-03-22 |
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