CN116791462A - Steel pipe longitudinal beam and concrete bridge deck plate connection forming steel-concrete composite beam structure - Google Patents
Steel pipe longitudinal beam and concrete bridge deck plate connection forming steel-concrete composite beam structure Download PDFInfo
- Publication number
- CN116791462A CN116791462A CN202310607111.8A CN202310607111A CN116791462A CN 116791462 A CN116791462 A CN 116791462A CN 202310607111 A CN202310607111 A CN 202310607111A CN 116791462 A CN116791462 A CN 116791462A
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- Prior art keywords
- steel pipe
- concrete
- pipe longitudinal
- steel
- bridge deck
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 107
- 239000010959 steel Substances 0.000 title claims abstract description 107
- 239000004567 concrete Substances 0.000 title claims abstract description 77
- 239000002131 composite material Substances 0.000 title claims abstract description 21
- 230000002787 reinforcement Effects 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims abstract description 4
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims 3
- 238000000429 assembly Methods 0.000 claims 3
- 238000010276 construction Methods 0.000 description 9
- 238000009434 installation Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
-
- 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
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/64—Insulation or other protection; Elements or use of specified material therefor for making damp-proof; Protection against corrosion
- E04B1/642—Protecting metallic construction elements against corrosion
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a steel pipe longitudinal beam and concrete bridge deck plate connection to form a steel-concrete composite beam structure, which relates to the field of bridge upper structure, wherein the steel pipe longitudinal beam consists of a complete hollow round steel pipe, two steel pipe longitudinal beams are arranged, a plurality of cross beams are arranged between the two steel pipe longitudinal beams, and the steel pipe longitudinal beams are arranged at equal intervals along the length direction of the steel pipe longitudinal beam; the concrete bridge deck slab comprises a steel reinforcement framework which is formed by pouring concrete, and the steel reinforcement framework and the two steel pipe longitudinal beams are connected into a combined beam structure through the shear nails; the shear nails are uniformly welded on the surface of the upper semicircle of the steel pipe longitudinal beam, which is contacted with the concrete bridge deck; the fulcrum core filling concrete is a concrete solid section poured in an empty bin at the end fulcrum and the middle fulcrum of the steel pipe combined beam. The invention perfectly utilizes the compressive property of the concrete and the tensile property of the steel structure, fills the concrete in the steel pipe in the hogging moment area to form double combined action, and improves the stress performance of the traditional steel plate combined structure.
Description
Technical Field
The invention relates to the field of bridge superstructure, in particular to a steel pipe longitudinal beam and concrete bridge deck slab connection forming a steel-concrete composite beam structure.
Background
The steel-concrete combined structure is a novel structure formed by combining two materials with different properties, namely steel and concrete. The advantages of high tensile strength, good plasticity and good compressive property of the concrete are fully exerted, and the defects of the steel materials are overcome. In recent years, steel-concrete composite structures are greatly advanced in the fields of safety, durability and economy, and countries for steel structure bridge construction and green highway construction, so that the steel-concrete composite beam bridge has very wide application prospect, remarkable social and economic benefits, and steel-concrete composite structures such as steel plate composite beams, steel box composite beams and the like are widely applied and developed. However, some defects exist in the practical application process of the structures:
1, a steel plate combined beam or a steel box combined beam structure is formed by combining a large number of steel plates, and the steel plate structure is easy to twist and bend laterally, so that a series of horizontal supports are required to be arranged during concrete pouring, and the construction efficiency is influenced;
2, the steel plates forming the rigid main beam are customized according to the design, the installation positions are different, the shapes are different, the thicknesses are different, the welding amount is large, the welding seams are more, the components are complicated, and the standardization of production is difficult to realize;
the existing steel-concrete composite beam structure is characterized in that concrete is used as a bridge deck plate to be arranged on the upper side of the structure, a steel structure is used as a main beam to be arranged on the lower side of the structure, and the composite form is single, so that the compression resistance of the upper side of the concrete and the tensile resistance of the lower side of the steel structure are well exerted on a simply supported structure system, but the stress on the condition that the upper side of a hogging moment area is pulled and the lower side of the continuous beam structure is stressed is less ingenious, or the situation that the upper side of the concrete is pulled and cracked or the lower side of the steel beam is unstable is caused;
4, the steel beam of the existing steel-concrete composite beam structure has large contact area with the atmosphere and more internal and external angles, and chlorides are easy to accumulate on the surface of the steel structure to accelerate corrosion of the steel structure, especially in coastal areas.
Disclosure of Invention
In order to solve the problems in the background technology, the invention provides a steel pipe longitudinal beam and concrete bridge deck plate connected to form a steel-concrete composite beam structure.
The technical problems to be solved by the invention are realized by adopting the following technical scheme:
a steel pipe longeron is connected with concrete bridge deck and is formed steel and concrete composite beam structure includes:
the steel pipe longitudinal beam consists of a complete hollow round steel pipe and is provided with two steel pipes;
a plurality of cross beams are arranged between the two steel pipe longitudinal beams and are arranged at equal intervals along the length direction of the steel pipe longitudinal beams;
the concrete bridge deck slab comprises a steel reinforcement framework which is formed by pouring concrete, and the steel reinforcement framework and the two steel pipe longitudinal beams are connected into a combined beam structure through the shear nails;
the shear nails are uniformly welded on the surface of the upper semicircle of the steel pipe longitudinal beam, which is contacted with the concrete bridge deck;
the fulcrum core filling concrete is a concrete solid section poured in an empty bin at the end fulcrum and the middle fulcrum of the steel pipe combined beam.
The invention further discloses the following technology:
preferably, the cross beam comprises a cross beam end assembly welded with the outer wall of the steel pipe longitudinal beam, and further comprises a cross beam assembly connected with the cross beam end assembly through a cross beam connecting piece at the middle section of the cross beam;
preferably, the concrete bridge deck is outwards overhanging at two sides perpendicular to the direction of the steel pipe longitudinal beam.
Preferably, the cross section of the concrete bridge deck is divided into two forms of a mid-span pivot and a fulcrum;
the thickness of the concrete bridge deck is larger at the connection point with the steel pipe longitudinal beams at the midspan, and the thickness of the middle part and the overhanging part of the two steel pipe longitudinal beams is smaller;
the thickness of the overhanging part of the concrete bridge deck is smaller at the fulcrum, and the thickness of the rest parts is larger.
The beneficial effects are that:
according to the invention, the complete round steel pipe is used as a main beam of the steel structure and is connected with the reinforced concrete bridge deck to form a steel-concrete composite beam structure, and the round steel pipe cannot be twisted and buckled laterally, so that a horizontal support is not required to be arranged during concrete pouring, the construction speed is high, and the appearance of the bridge is concise and attractive;
the round steel pipe used as the rigid main beam is a standardized component, a large number of plates are not required to be welded, the number of welding seams is greatly reduced, the production and installation efficiency is improved, and standardized and batch production and installation are facilitated;
the compressive property of concrete and the tensile property of a steel structure are perfectly utilized, and the concrete is filled in the steel pipe in a hogging moment area to form a double combined effect, so that the stress performance of the traditional steel plate combined structure is improved;
the circular tubular section shape of the steel pipe longitudinal beam ensures that the surface of the structure is smooth and has no dead angle, the specific surface area is small, the chloride accumulated on the surface of the structure is minimized, and the corrosion resistance of the structure can be enhanced, especially in coastal areas.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a cross-sectional construction of a steel tube composite girder bridge;
FIG. 2 is a schematic diagram of a cross-sectional construction of a fulcrum of a steel tube composite beam bridge;
fig. 3 is a longitudinal elevation of the steel tube assembly Liang Qiaokua.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-3, a steel pipe longitudinal beam and a concrete bridge deck are connected to form a steel-concrete composite beam structure, the steel pipe longitudinal beam consists of a steel pipe longitudinal beam 1, a concrete bridge deck 2, shear nails 3, a cross beam and fulcrum core filling concrete 7, and the steel pipe longitudinal beam 1 consists of a complete hollow round steel pipe;
the concrete bridge deck 2 is formed by pouring reinforced steel frameworks into concrete, and is connected with the two steel pipe longitudinal beams 1 through the shear nails 3 to form a combined beam structure;
the shear nails 3 are uniformly welded on the contact surface of the upper semicircle of the steel pipe longitudinal beam 1 and the concrete bridge deck 2, so as to increase the connecting force between the steel pipe longitudinal beam 1 and the concrete bridge deck 2;
the beam consists of a beam end assembly 4 welded with the outer wall of the steel pipe longitudinal beam 1, and a beam middle section beam assembly 5 through a beam connecting piece 6; two ends of the cross beam are respectively connected with one steel pipe longitudinal beam 1, and the two steel pipe longitudinal beams 1 are connected with the out-of-plane surfaces of a plurality of cross beams to form a stable stress system;
the fulcrum core filling concrete 7 is near the end fulcrum and the middle fulcrum of the steel pipe combined beam, and is used for adding the fulcrum counterweight and forming a double combined beam effect in a hogging moment area at the same time of pouring a concrete solid section in an empty bin in the steel pipe longitudinal beam 1, so that the structural bearing capacity is improved.
The cross beam end assembly 4 and the cross beam assembly 5 at the middle section of the cross beam have the same cross section shape and consist of an upper flange, a web plate and a lower flange; and one end of the beam end assembly 4 is tightly welded with the arc-shaped side surface of the steel pipe longitudinal beam 1 into a whole, and the beam end assembly and the arc-shaped side surface of the steel pipe longitudinal beam 1 are arranged at equal intervals along the length direction of the steel pipe longitudinal beam 1.
The concrete bridge deck 2 is supported and connected to the two steel pipe longitudinal beams 1, and two sides of the concrete bridge deck, which are perpendicular to the direction of the steel pipe longitudinal beams 1, are outwards overhanging; the cross section of the concrete bridge deck 2 is divided into a midspan and a fulcrum, the thickness of the concrete bridge deck 2 at the connecting point with the steel pipe longitudinal beams 1 is larger, and the thicknesses of the middle parts and overhanging parts of the two steel pipe longitudinal beams 1 are smaller; the thickness of the overhanging part of the concrete bridge deck 2 is smaller at the fulcrum, and the thickness of the rest parts is larger; the thickness of the concrete deck 2 varies linearly across the middle and fulcrum intermediate portions.
The steel pipe longitudinal beam 1 is filled with low-density light mortar in an internal empty bin along a midspan region in the length direction of the beam so as to improve the sound-reducing and noise-reducing effects of the structure.
And the beam end assembly 4 is welded with the steel pipe longitudinal beam 1 in a factory, and the beam middle section beam assembly 5 is connected with the beam end assembly 4 in a construction site.
The concrete bridge deck 2 can be prefabricated in a factory and then transported to a construction site to be connected with the steel pipe longitudinal beam 1 in a post-cast concrete mode, or can be formed in a construction site by standing and casting in a mold after the steel pipe longitudinal beam 1 and the cross beam are erected and connected.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments, and that the foregoing invention and description are merely illustrative of the principles of this invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A steel pipe longeron is connected with concrete bridge deck and is formed steel and concrete composite beam structure, its characterized in that includes:
the steel pipe longitudinal beam (1), the steel pipe longitudinal beam (1) is composed of a complete hollow round steel pipe, and two steel pipes are arranged;
a plurality of cross beams are arranged between the two steel pipe longitudinal beams (1) and are arranged at equal intervals along the length direction of the steel pipe longitudinal beams (1);
the concrete bridge deck (2) comprises a steel reinforcement framework which is formed by pouring concrete, and the steel reinforcement framework and the two steel pipe longitudinal beams (1) are connected into a combined beam structure through the shear nails (3);
the shear nails (3) are uniformly welded on the surface of the upper semicircle of the steel pipe longitudinal beam (1) contacted with the concrete bridge deck (2);
the fulcrum core filling concrete (7), the fulcrum core filling concrete (7) is a concrete solid section poured in an empty bin at the end fulcrum and the middle fulcrum of the steel pipe combined beam.
2. A steel pipe longitudinal beam and concrete bridge deck connection to form a reinforced concrete composite beam structure according to claim 1, characterized in that the beams comprise beam end assemblies (4) welded to the outer walls of the steel pipe longitudinal beam (1), and further comprising beam intermediate beam assemblies (5) connected to the beam end assemblies (4) by beam connectors (6).
3. The steel pipe longitudinal beam and concrete bridge deck plate connection structure according to claim 1, wherein: the concrete bridge deck (2) is perpendicular to the two sides of the steel pipe longitudinal beam (1) in the direction and is outwards cantilevered.
4. A steel pipe stringer according to claim 3 connected to a concrete deck slab to form a reinforced concrete composite beam structure, wherein: the cross section of the concrete bridge deck (2) is divided into two forms of a span center and a fulcrum;
at the midspan, the concrete bridge deck (2) has larger thickness at the connection point with the steel pipe longitudinal beams (1), and has smaller thickness at the middle part and the overhanging part of the two steel pipe longitudinal beams (1);
the thickness of the overhanging part of the concrete bridge deck (2) is smaller at the fulcrum, and the thickness of the rest parts is larger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310607111.8A CN116791462A (en) | 2023-05-26 | 2023-05-26 | Steel pipe longitudinal beam and concrete bridge deck plate connection forming steel-concrete composite beam structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310607111.8A CN116791462A (en) | 2023-05-26 | 2023-05-26 | Steel pipe longitudinal beam and concrete bridge deck plate connection forming steel-concrete composite beam structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116791462A true CN116791462A (en) | 2023-09-22 |
Family
ID=88047305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310607111.8A Pending CN116791462A (en) | 2023-05-26 | 2023-05-26 | Steel pipe longitudinal beam and concrete bridge deck plate connection forming steel-concrete composite beam structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116791462A (en) |
-
2023
- 2023-05-26 CN CN202310607111.8A patent/CN116791462A/en active Pending
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