CN111622112A - Support-free construction method for cast-in-place bridge deck of reinforced concrete composite beam concrete - Google Patents
Support-free construction method for cast-in-place bridge deck of reinforced concrete composite beam concrete Download PDFInfo
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- CN111622112A CN111622112A CN202010373302.9A CN202010373302A CN111622112A CN 111622112 A CN111622112 A CN 111622112A CN 202010373302 A CN202010373302 A CN 202010373302A CN 111622112 A CN111622112 A CN 111622112A
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling 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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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Abstract
The invention belongs to the technical field of bridge construction, and particularly provides a support-free construction method for a reinforced concrete composite beam concrete cast-in-place bridge deck, which comprises the following steps: installing a steel main beam and a steel cross beam according to the drawing requirements, and processing a required profiled steel plate or steel plate according to the transverse line type of the bottom surface of the bridge deck; paving the processed profiled steel plates section by section on the upper flange plate of the steel girder along the bridge direction; installing reinforcing steel bars in the bridge deck on the laid profiled steel sheets; side dies are arranged on two sides of the bridge deck; pouring concrete on the profiled steel sheet and on the inner side of the side mold in the step 3) and maintaining, thereby solving the problems that in the prior art, after the construction of the bridge deck is finished, the support and the template need to be dismantled, and the dismantling workload is large; the invention is of no-support construction, does not need to be dismantled and carried out at high altitude, reduces the safety risk, does not need to build a dismantling operation platform, reduces the construction cost and improves the construction efficiency.
Description
Technical Field
The invention belongs to the technical field of bridge deck slab construction, and particularly relates to a support-free construction method for a reinforced concrete composite beam concrete cast-in-place bridge deck slab.
Background
The bridge deck installed in the steel-concrete composite beam is an important part of a bridge structure, and has important influence on the traffic capacity of roads. With the development of bridge construction in China, the research on bridge deck construction technology is gradually paid attention to, and wide and deep research is gradually carried out.
The steel plate combined beam bridge, in particular to the steel plate beam bridge with the steel beams formed by combining three I-shaped main beams and cross beams, a plurality of main beams are vertically arranged at intervals, and the steel plate combined beam bridge is more and more applied due to simple and regular structure, high standardization and high regularity. The concrete bridge deck has two kinds of technologies of prefabricating, cast-in-place, and the concrete bridge deck of cast in situ does not have comparatively reasonable construction method at present, and current support construction need demolish the support after the bridge deck construction is accomplished, increases and demolishs work load, and demolishs the operation and need go on at the high altitude, and safe risk is big, demolishs the operation simultaneously and need build demolishs the operation platform, and is with high costs.
Disclosure of Invention
The invention provides a support-free construction method for a steel-concrete composite beam concrete cast-in-place bridge deck, which aims to solve the problems that in the prior art, after the construction of the bridge deck is finished, a support needs to be dismantled, and the dismantling workload is increased; the second purpose is to overcome the problem that the operation of dismantling the construction support in the prior art needs to be carried out at high altitude, the safety risk is high, a dismantling operation platform needs to be built, and the cost is high.
Therefore, the invention provides a support-free construction method for a steel-concrete composite beam concrete cast-in-place bridge deck, which comprises the following steps:
1) installing a steel main beam and a steel cross beam according to the drawing requirements, and processing a required profiled steel sheet according to the transverse line type of the bottom surface of the bridge deck;
2) paving the processed profiled steel plates section by section on the upper flange plate of the steel girder along the bridge direction;
3) installing reinforcing steel bars in the bridge deck on the profiled steel sheet laid in the step 2);
4) side dies are arranged on two sides of the bridge deck;
5) and (3) pouring concrete on the profiled steel sheet in the step 2) and on the inner side of the side die in the step 3) and curing.
The profiled steel sheet comprises an open profiled steel sheet, a closed profiled steel sheet and a combined profiled steel sheet, the combined profiled steel sheet comprises a steel sheet and a steel bar truss, the steel bar truss is connected to the upper surface of the bottom plate, and the bottom plate is one of the open profiled steel sheet, the closed profiled steel sheet or the thin steel sheet.
And the upper surface of the profiled steel sheet is provided with an indentation.
And a reinforcing mesh or a shear nail is welded on the profiled steel sheet.
And the bottom plate and the steel bar truss are connected by adopting a threaded pull rod, a bolt or welding.
The open type profiled steel sheet, the closed type profiled steel sheet and the combined profiled steel sheet are required to be subjected to cold bending according to the transverse linear type of the bottom surface of the bridge deck.
The open type profiled steel plate, the closed type profiled steel plate and the thin steel plate are stainless steel plates or steel plates coated with surfaces meeting the standard requirements, the thickness of each of the open type profiled steel plate and the closed type profiled steel plate is larger than that of the thin steel plate, and the thickness of the thin steel plate is 3-6 mm.
The steel bar truss comprises a plurality of sections of trusses, the direction of each section of truss is in the transverse bridge direction, and the plurality of sections of trusses are arranged in the axial direction of the bridge.
The steel bar truss can be made of steel bars in the bridge deck.
The height of the steel bar truss is not more than that of the bridge deck.
The invention has the beneficial effects that: the invention provides a support-free construction method for a steel-concrete composite beam concrete cast-in-place bridge deck, which comprises the following steps: 1) installing a steel main beam and a steel cross beam according to the drawing requirements, and processing a required profiled steel sheet according to the transverse line type of the bottom surface of the bridge deck; 2) paving the processed profiled steel plates section by section on the upper flange plate of the steel girder along the bridge direction; 3) installing reinforcing steel bars in the bridge deck on the profiled steel sheet laid in the step 2); 4) side dies are arranged on two sides of the bridge deck; 5) and (3) pouring concrete on the profiled steel sheet in the step 2) and on the inner side of the side die in the step 3) and curing.
The construction without a support and a template is realized by adopting 3 technical modes:
in the first mode, an open profiled steel sheet or a closed profiled steel sheet is used as a bottom die and a bearing structure of a concrete bridge deck, so that the support-free construction is realized; the open-type profiled steel plate and the closed-type profiled steel plate adopt stainless steel plates or steel plates coated on the surfaces meeting the standard requirements, and construction without detaching the bottom die is realized;
in the second mode, a steel bar truss is used as a bearing structure, the steel bar truss can adopt steel bars in a bridge deck, the height of the steel bar truss is not higher than that of the bridge deck, a thin steel plate can adopt a stainless steel plate or a steel plate coated with the surface meeting the standard requirement, construction without disassembling a bottom die is realized, the steel bar truss is fixed on a steel main beam, the steel bar truss is connected with the thin steel plate through a threaded pull rod, and the height of the bottom die is adjustable;
and in the third mode, on the basis of the second mode, the thin steel plate is welded and connected with the steel bar truss, the thin steel plate is used as a part of the truss structure, the material performance of the bottom die is fully utilized, the weight of the truss is reduced, materials are saved, and the thin steel plate is also a stainless steel plate or a surface-coated steel plate coated according with the standard requirements, so that the construction without disassembling the bottom die is realized.
And in the fourth mode, on the basis of the second mode and the third mode, the thin steel plate is replaced by an open profiled steel plate or a closed profiled steel plate, so that the construction of the bridge deck with larger transverse distance between the steel main beams can be adapted.
The profiled steel plates, the stainless steel plates and the coated steel plates are all national standard products, can be used as a permanent structure of a bridge, and can not be dismantled after the construction of the bridge deck is finished, so that the dismantling workload is reduced; demolish the operation and need go on at the high altitude, and the safe risk is big, does not demolish and can reduce safe risk, need not build simultaneously and demolish operation platform, reduces construction cost.
Drawings
The present invention will be described in further detail below with reference to the accompanying drawings.
FIG. 1 is a schematic view of a bridge deck construction using open type profiled steel sheets;
FIG. 2 is a schematic illustration of the construction of a deck slab using a closed profiled steel sheet;
FIG. 3 is a schematic view of the construction of a bridge deck using a steel bar truss and steel plate combined structure;
FIG. 4 is a schematic structural view of the single section truss and steel plate of FIG. 3;
FIG. 5 is a schematic construction view of a bridge deck with a steel bar truss and steel plate separation structure;
fig. 6 is a schematic structural view of the single-segment truss and the steel plate in fig. 5.
Description of reference numerals: 1. a steel main beam; 2. a steel beam; 3. profiled steel sheets; 4. a base plate; 5. a steel bar truss.
Detailed Description
Example 1:
as shown in fig. 1 to 3, a method for constructing a cast-in-place bridge deck of reinforced concrete composite beam concrete without a support comprises the following steps:
1) installing a steel main beam 1 and a steel cross beam 2 according to the drawing requirements, and processing a required profiled steel sheet 3 according to the transverse line type of the bottom surface of the bridge deck;
2) paving the processed profiled steel sheets 3 section by section on the upper flange plate of the steel girder 1 along the bridge direction; the profiled steel sheets 3 are connected by adopting lap joint, undercut connection and buckle connection;
3) installing reinforcing steel bars in the bridge deck on the profiled steel sheet 3 laid in the step 2);
4) side dies are arranged on two sides of the bridge deck;
5) and (3) pouring concrete on the profiled steel sheet 3 in the step 2) and on the inner side of the side die in the step 3) and curing.
The profiled steel sheet is used as a bottom die and a bearing structure of the concrete bridge deck slab, so that support-free construction and bottom die-detachment-free construction are realized; the bottom die is used as a part of the steel bar truss, so that the material performance is fully utilized, and the weight of the support is reduced; the profiled steel sheet is a national standard product, meets the use standard of a permanent structure, can not be dismantled after the construction of the bridge deck is finished, and reduces the dismantling workload; demolish the operation and need go on at the high altitude, and the safe risk is big, does not demolish and can reduce safe risk, need not build simultaneously and demolish operation platform, reduces construction cost.
Example 2:
on the basis of the embodiment 1, the profiled steel sheet 3 comprises an open profiled steel sheet, a closed profiled steel sheet and a combined profiled steel sheet, the combined profiled steel sheet comprises a bottom plate 4 and a steel bar truss 5, the steel bar truss 5 is connected to the upper surface of the bottom plate 4, and the bottom plate 4 is one of the open profiled steel sheet, the closed profiled steel sheet or a thin steel sheet. The bottom plate 4 and the steel bar truss 5 are connected by adopting a threaded pull rod, a bolt or welding;
when the profiled steel sheet 3 is an open profiled steel sheet, the open profiled steel sheet is used as a bottom die and a bearing structure of the concrete deck slab to realize the construction without a support; the open profiled steel sheet adopts a stainless steel sheet or a steel sheet coated with the surface meeting the standard requirement, so that construction without detaching the bottom die is realized; the open profiled steel sheet has good section characteristics and large bearing capacity relative to the closed profiled steel sheet, is suitable for the condition that the distance between steel girders is large, has large contact area with concrete and good cohesive force, and can improve the performance of a concrete bridge deck under the condition of not being dismantled.
Example 3:
on the basis of the embodiment 2, when the profiled steel sheet 3 is a closed profiled steel sheet, the closed profiled steel sheet is used as a bottom die and a bearing structure of a concrete bridge deck, so that the support-free construction is realized; the closed profiled steel sheet enables the bottom surface of the bridge deck to be smooth, and is beneficial to reducing the difficulty of dismantling construction.
Example 4:
on the basis of the embodiment 2, the profiled steel sheet 3 is a combined profiled steel sheet, the combined profiled steel sheet comprises a bottom plate 4 and a steel bar truss 5, the steel bar truss 5 is connected on the bottom plate 4, the bottom plate 4 is made of a thin steel plate which is thinner than the open-type profiled steel plate and the closed-type profiled steel plate, has low price, is easy to purchase, at the position of size change of the longitudinal and transverse bridge decks, the thin steel plate is easier to process, the reasonable size is easy to ensure, the steel bar truss 5 is used as a bearing structure, the steel bar truss can adopt steel bars in the bridge decks, the height of the steel bar truss 5 is not higher than that of the bridge decks, the bottom plate 4 adopts the thin steel plate to realize construction without detaching a bottom die, the steel bar truss 5 is fixed on a steel girder, when the steel bar truss is connected with the bottom plate by adopting a threaded pull rod, realize bottom plate height-adjustable, steel bar truss 5 structure bearing capacity is strong, uses under the great condition of suitable steel girder interval.
Example 5:
on the basis of embodiment 4, when the profiled steel sheet 3 is a combined profiled steel sheet, the bottom plate 4 and the steel bar truss 5 are welded or fixedly connected in other non-adjustment manners, the bottom plate 4 is a thin steel sheet, the bottom plate 4 is a part of the structure of the steel bar truss 5, the material performance is fully utilized, the weight of the steel bar truss is reduced, materials are saved, the bottom plate 4 is also a stainless steel sheet or a steel sheet coated with a surface meeting the standard requirement, and construction without detaching the bottom die is realized.
Example 6:
on the basis of embodiment 4, when the profiled steel sheet 3 is a combined profiled steel sheet, the bottom plate 4 and the steel bar truss 5 are connected, and when the bottom plate 4 and the steel bar truss 5 are connected, the bottom plate 4 is an open profiled steel sheet or a closed profiled steel sheet, so that the bearing capacity is further improved, and the construction method is suitable for bridge decks with larger steel longitudinal beam intervals.
Example 7:
on the basis of example 2, indentations were provided on the top surface of the profiled steel sheet 3. The surface of the profiled steel sheet can be provided with indentations, so that the bottom die is tightly connected with concrete, and the performance of the bridge deck is improved.
And a reinforcing mesh or a shear nail is welded on the profiled steel sheet 3. The bottom die is made of profiled steel plates, and reinforcing meshes or shear nails are welded on the bottom die, so that the bottom die is tightly connected with concrete, and the performance of the bridge deck is improved.
The open type profiled steel sheet, the closed type profiled steel sheet and the bottom plate 4 are all required to be subjected to cold bending according to the transverse linear type of the bottom surface of the bridge deck. The cold-bending profiled steel sheet has the advantages of thin and uniform wall thickness, simple production process, high production efficiency, capability of producing various profiles with complicated cross section shapes and cold-bending profiled steel with different materials and strong adaptability.
The open type profiled steel plate, the closed type profiled steel plate and the thin steel plate are stainless steel plates or steel plates coated with surfaces meeting the standard requirements, the thickness of each of the open type profiled steel plate and the closed type profiled steel plate is larger than that of the thin steel plate, and the thickness of the thin steel plate is 3-6 mm. The thin steel plate is thinner than the open type profiled steel plate and the closed type profiled steel plate, the price is low, the material is easy to purchase, the thin steel plate is easier to process at the size change part of the longitudinal and transverse bridge deck slab, and the reasonable size is easy to ensure; the open-type profiled steel sheet and the closed-type profiled steel sheet are combined with the steel bar truss for use, so that the bearing capacity is further improved, and the construction of the bridge deck with larger steel longitudinal beam intervals is adapted.
As shown in fig. 3-6, the steel bar truss 5 includes a plurality of sections of trusses, each of which is in a transverse direction, and the plurality of sections of trusses are arranged along an axial direction of the bridge. The steel bar truss 5 is made of steel bars in the bridge deck. The material performance is fully utilized, and the weight of the bracket is reduced.
The height of the steel bar truss 5 is not more than that of the bridge deck. The steel bar truss 5 adopts structural steel bars in a concrete bridge deck, the height of the whole steel bar truss 5 is not larger than the height of the bridge deck, and the truss is prevented from being exposed to influence construction.
The profiled steel plates, the stainless steel plates and the coated steel plates are all national standard products, can be used as a permanent structure of a bridge, and can not be dismantled after the construction of the bridge deck is finished, so that the dismantling workload is reduced; demolish the operation and need go on at the high altitude, and the safe risk is big, does not demolish and can reduce safe risk, need not build simultaneously and demolish operation platform, reduces construction cost.
In the description of the present invention, it is to be understood that the terms "above" and the like are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, so that the terms describing the positional relationship in the drawings are used for illustrative purposes only and are not to be construed as limiting the patent.
The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the invention, which is intended to be covered by the claims and any design similar or equivalent to the scope of the invention.
Claims (10)
1. A support-free construction method for a steel-concrete composite beam concrete cast-in-place bridge deck is characterized by comprising the following steps: the method comprises the following steps:
1) installing a steel main beam (1) and a steel cross beam (2) according to the drawing requirements, and processing a required profiled steel sheet (3) according to the transverse line type of the bottom surface of the bridge deck;
2) paving the processed profiled steel sheets (3) section by section on the upper flange plate of the steel girder (1) along the bridge direction;
3) installing reinforcing steel bars in the bridge deck on the profiled steel sheet (3) laid in the step 2);
4) side dies are arranged on two sides of the bridge deck;
5) pouring concrete on the profiled steel sheet (3) in the step 2) and on the inner side of the side die in the step 3) and curing.
2. The method for constructing the cast-in-place bridge deck of the reinforced concrete composite beam concrete without a support according to claim 1, is characterized in that: the profiled steel sheet (3) comprises an open profiled steel sheet, a closed profiled steel sheet and a combined profiled steel sheet, the combined profiled steel sheet comprises a bottom plate (4) and a steel bar truss (5), the steel bar truss (5) is connected to the upper surface of the bottom plate (4), and the bottom plate (4) is one of the open profiled steel sheet, the closed profiled steel sheet or a thin steel sheet.
3. The method for constructing the cast-in-place bridge deck of the reinforced concrete composite beam concrete without a support according to claim 1, is characterized in that: and the upper surface of the profiled steel sheet (3) is provided with an indentation.
4. The method for constructing the cast-in-place bridge deck of the reinforced concrete composite beam concrete without a support according to claim 1, is characterized in that: and a reinforcing mesh or a shear nail is welded on the profiled steel sheet (3).
5. The method for constructing the cast-in-place bridge deck of the steel-concrete composite beam concrete without a support according to claim 2, wherein the method comprises the following steps: and the bottom plate (4) and the steel bar truss (5) are connected by adopting a threaded pull rod, a bolt or welding.
6. The method for constructing the cast-in-place bridge deck of the steel-concrete composite beam concrete without a support according to claim 2, wherein the method comprises the following steps: the open type profiled steel sheet, the closed type profiled steel sheet and the combined profiled steel sheet are required to be subjected to cold bending according to the transverse linear type of the bottom surface of the bridge deck.
7. The method for constructing the cast-in-place bridge deck of the steel-concrete composite beam concrete without a support according to claim 2, wherein the method comprises the following steps: the open type profiled steel plate, the closed type profiled steel plate and the thin steel plate are stainless steel plates or steel plates coated with surfaces meeting the standard requirements, the thickness of each of the open type profiled steel plate and the closed type profiled steel plate is larger than that of the thin steel plate, and the thickness of the thin steel plate is 3-6 mm.
8. The method for constructing the cast-in-place bridge deck of the steel-concrete composite beam concrete without a support according to claim 2, wherein the method comprises the following steps: the steel bar truss (5) comprises a plurality of sections of trusses, the direction of each section of truss is in the transverse bridge direction, and the plurality of sections of trusses are arranged in the axis direction of the bridge.
9. The method for constructing the cast-in-place bridge deck of the steel-concrete composite beam concrete without a support according to claim 2, wherein the method comprises the following steps: the steel bar truss (5) is made of steel bars in the bridge deck.
10. The method for constructing the cast-in-place bridge deck of the steel-concrete composite beam concrete without a support according to claim 2, wherein the method comprises the following steps: the height of the steel bar truss (5) is not more than that of the concrete bridge deck.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010373302.9A CN111622112A (en) | 2020-05-06 | 2020-05-06 | Support-free construction method for cast-in-place bridge deck of reinforced concrete composite beam concrete |
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| CN202010373302.9A CN111622112A (en) | 2020-05-06 | 2020-05-06 | Support-free construction method for cast-in-place bridge deck of reinforced concrete composite beam concrete |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112176848A (en) * | 2020-10-29 | 2021-01-05 | 四川交通职业技术学院 | Main girder cantilever flange inner frame structure, bridge and its construction method |
| CN112982162A (en) * | 2021-03-17 | 2021-06-18 | 河南新昱鑫桥梁钢构有限责任公司 | Steel bar truss type steel-concrete combined bridge deck and construction method |
| CN113356012A (en) * | 2021-06-25 | 2021-09-07 | 青海省交通建设管理有限公司 | Assembly type bridge structure in tunnel and construction method thereof |
| CN113445429A (en) * | 2021-07-16 | 2021-09-28 | 四川省公路规划勘察设计研究院有限公司 | Profiled steel sheet laying structure suitable for support-free construction of steel-concrete composite beam bridge |
| CN113802450A (en) * | 2021-08-16 | 2021-12-17 | 中国建筑股份有限公司 | Steel concrete composite beam structure and construction method |
| CN114541258A (en) * | 2022-03-14 | 2022-05-27 | 甘肃省交通规划勘察设计院股份有限公司 | Assembly type steel-concrete composite beam template-free construction bridge deck |
| CN114808722A (en) * | 2022-05-09 | 2022-07-29 | 中铁四局集团第一工程有限公司 | Construction method of cable-stayed bridge reinforced concrete main beam |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112176848A (en) * | 2020-10-29 | 2021-01-05 | 四川交通职业技术学院 | Main girder cantilever flange inner frame structure, bridge and its construction method |
| CN112982162A (en) * | 2021-03-17 | 2021-06-18 | 河南新昱鑫桥梁钢构有限责任公司 | Steel bar truss type steel-concrete combined bridge deck and construction method |
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| CN113445429A (en) * | 2021-07-16 | 2021-09-28 | 四川省公路规划勘察设计研究院有限公司 | Profiled steel sheet laying structure suitable for support-free construction of steel-concrete composite beam bridge |
| CN113802450A (en) * | 2021-08-16 | 2021-12-17 | 中国建筑股份有限公司 | Steel concrete composite beam structure and construction method |
| CN114541258A (en) * | 2022-03-14 | 2022-05-27 | 甘肃省交通规划勘察设计院股份有限公司 | Assembly type steel-concrete composite beam template-free construction bridge deck |
| CN114808722A (en) * | 2022-05-09 | 2022-07-29 | 中铁四局集团第一工程有限公司 | Construction method of cable-stayed bridge reinforced concrete main beam |
| WO2023016573A1 (en) * | 2022-05-09 | 2023-02-16 | 中铁四局集团有限公司 | Construction method for steel-concrete main girder of cable-stayed bridge |
| JP2023543524A (en) * | 2022-05-09 | 2023-10-16 | 中鉄四局集団有限公司 | Construction method of steel concrete main girder of cable-stayed bridge |
| JP7429940B2 (en) | 2022-05-09 | 2024-02-09 | 中鉄四局集団有限公司 | Construction method of steel concrete main girder of cable-stayed bridge |
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