CN111119407A - A steel-concrete composite beam - Google Patents
A steel-concrete composite beam Download PDFInfo
- Publication number
- CN111119407A CN111119407A CN202010099546.2A CN202010099546A CN111119407A CN 111119407 A CN111119407 A CN 111119407A CN 202010099546 A CN202010099546 A CN 202010099546A CN 111119407 A CN111119407 A CN 111119407A
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- Prior art keywords
- concrete
- steel
- shaped steel
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- composite beam
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
- E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
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- 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
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- 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
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Reinforcement Elements For Buildings (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses a steel-concrete composite beam which comprises H-shaped steel, concrete and a reinforcing mesh arranged in the concrete, wherein the bottom of the concrete is tightly attached to a wing plate at the bottom of the H-shaped steel, two side surfaces of the concrete are flush with the edge of the wing plate at the bottom of the H-shaped steel, an interval space is arranged between the top of the concrete and the wing plate at the top of the H-shaped steel, one section of a middle web plate of the H-shaped steel is embedded in the concrete, the other section of the middle web plate of the H-shaped steel is positioned in the interval, and a plurality of through holes which are mutually isolated and can allow reinforcing steel to pass through are arranged on one section. The invention saves the net height of the building, simultaneously increases the combination effect of the steel-concrete combination beam, and improves the bearing capacity and the rigidity of the steel-concrete combination beam, thereby effectively controlling the deflection of a horizontal structure, improving the comfort and reducing the cracking problem of the inner partition wall.
Description
Technical Field
The invention relates to the technical field of building structures, in particular to a steel-concrete composite beam.
Background
As a key technology of building industrialization, an assembled steel structure building has a series of advantages of standardized design, factory manufacturing, assembly construction and the like, but in the application process of the traditional H-shaped steel beam in the building field, if the fire resistance and durability of the building are reached, corrosion-resistant and fire-proof treatment is needed, decorative plates such as gypsum boards or cement fiber boards need to be coated on site during decorative treatment, the site workload is large, and the cost is high; especially, in the aspect of the net height of the building, the floor slab is placed on the upper flange of the H-shaped steel, the waste of the net height of the building is large, and the combined effect of the H-shaped steel and the concrete floor slab is difficult to realize when the H-shaped steel is used as a main frame beam. How to effectively solve the problems in the technical field of the prior assembled steel structure building becomes a difficult problem in the industry.
Disclosure of Invention
The invention aims to solve the problems of defects of the existing H-shaped steel beam in fire prevention, corrosion prevention, building decoration, building clear height, structural stress performance and the like, and provides the steel-concrete composite beam which saves the building clear height, increases the combination effect of the steel-concrete composite beam, improves the bearing capacity and rigidity of the steel-concrete composite beam, can effectively control the deflection of a horizontal structure, improves the comfort and reduces the cracking problem of an inner partition wall.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a steel-concrete composite beam, includes H shaped steel, concrete, locates the reinforcing bar net in the concrete, concrete bottom and H shaped steel bottom pterygoid lamina paste tightly, concrete both sides face and H shaped steel bottom pterygoid lamina edge parallel and level, be equipped with the interval space between concrete top and the H shaped steel top pterygoid lamina, H shaped steel middle part web one section bury underground in the concrete, another section is located the interval, H shaped steel middle part web be equipped with a plurality of mutual isolations, can hold the through-hole that the reinforcing bar passed on one section that is located the interval space. According to the scheme, a part of height is reserved when concrete is poured in the H-shaped steel abdominal cavity, and when the floor slab is to be constructed and installed, the reserved cavity part and the floor slab are poured with concrete together to form the composite beam.
Preferably, the H-shaped steel is one of common H-shaped steel, honeycomb H-shaped steel, variable cross-section H-shaped steel and unequal flange H-shaped steel.
Preferably, the concrete is one of ordinary concrete, lightweight aggregate concrete, self-compacting concrete, high-strength concrete and lightweight foamed concrete.
Preferably, the reinforcing mesh comprises a plurality of transverse stirrups penetrating through the web of the H-shaped steel and a plurality of vertical reinforcing bars connected with the transverse stirrups.
Preferably, the steel-concrete composite beam is fixed with a floor slab, the interval space is arranged in the floor slab, the floor slab is provided with shear steel bars, and the shear steel bars penetrate through the through holes in the web plate.
The scheme aims to overcome the defects of the existing H-shaped steel beam in fire prevention, corrosion prevention, building decoration, building clear height, structural stress performance and the like, and provides the steel-concrete composite beam consisting of partially precast concrete and H-shaped steel, the assembly type steel structure technology and the assembly type concrete structure technology are effectively combined, the shock resistance superiority, the connection reliability and the structural safety of the steel structure technology and the fire prevention, corrosion prevention and decoration performance of the assembly type concrete technology are fully exerted, particularly, the steel-concrete composite beam and the floor slab are connected by the connecting structure, so that the building clear height is saved, the combined effect of the steel-concrete composite beam is increased, the bearing capacity and the rigidity of the steel-concrete composite beam are improved, the deflection of a horizontal structure can be effectively controlled, the comfort is improved, and the cracking problem of an inner partition wall is reduced. The steel-concrete composite beam effectively combines a steel structure and a concrete structure, is a good solution to the defects in the conventional assembled steel structure system, gives full play to the performance advantages of the steel structure and the concrete structure, better saves materials, reduces environmental pollution and improves living environment.
Therefore, the invention has the following beneficial effects:
1. the fire resistance and the corrosion resistance of the H-shaped steel beam can be improved, the integrated functions of fire prevention and corrosion prevention are realized, and the main structure is the same as the age;
2. the bearing capacity and the rigidity of the traditional H-shaped steel beam are improved, so that the deflection of a horizontal structure can be effectively controlled, the comfort is improved, and the cracking problem of the inner partition wall is reduced;
3. the floor slab is placed on the H-shaped steel precast concrete, and compared with the traditional floor slab which is placed on the flange of the H-shaped steel beam, the net height of the building is greatly saved, and the building quality is improved;
4. the bearing capacity performance is greatly improved, and the node connection performance is greatly improved due to the connection mode of the steel structure;
5. the die is not needed when the die is prefabricated in a factory, so that the manufacturing cost is greatly reduced;
6. in the assembly construction stage, a template and a scaffold are not needed, so that the construction cost is reduced, and the installation efficiency is improved;
7. the sound insulation performance is promoted greatly than traditional H shaped steel roof beam, and the concrete basal plane is convenient for the later stage and is decorated.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention.
Fig. 2 is another schematic structure of the present invention.
In the figure: 1. h-shaped steel 2, concrete 3, vertical steel bar 4 and transverse stirrup
5. Shear reinforcement.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, a steel-concrete composite beam comprises an H-shaped steel 1, a concrete 2, and a reinforcing mesh arranged in the concrete 1, wherein the bottom of the concrete 2 is closely attached to a wing plate at the bottom of the H-shaped steel 1, two side surfaces of the concrete 2 are flush with the edge of the wing plate at the bottom of the H-shaped steel 1, a space is arranged between the top of the concrete 2 and the wing plate at the top of the H-shaped steel 1, one section of a middle web plate of the H-shaped steel 1 is embedded in the concrete 2, the other section of the middle web plate of the H-shaped steel 1 is positioned in the space, and a plurality of through holes which are isolated from each other;
the H-shaped steel 1 is one of common H-shaped steel, honeycomb H-shaped steel, variable cross-section H-shaped steel and unequal flange H-shaped steel;
the concrete 2 is one of common concrete, lightweight aggregate concrete, self-compacting concrete, high-strength concrete and lightweight foaming concrete;
the reinforcing mesh comprises a plurality of transverse stirrups 4 penetrating through the web plate of the H-shaped steel 1 and a plurality of vertical reinforcing steel bars 3 connected with the transverse stirrups 4;
the steel-concrete composite beam is fixed with a floor slab, the interval space is arranged in the floor slab, the floor slab is provided with shear steel bars 5, and the shear steel bars 5 penetrate through the through holes in the web plates.
The concrete implementation process is that firstly, vertical steel bars 3 and transverse stirrups 4 are bound (or welded) in the abdominal cavity of the H-shaped steel 1, and then concrete 2 is poured; and after the steel-concrete composite beam is installed in place, installing a floor slab, and arranging shear steel bars 5 to form a composite system.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (5)
1. The utility model provides a steel-concrete composite beam, its characterized in that includes H shaped steel, concrete, locates the reinforcing bar net in the concrete, concrete bottom and H shaped steel bottom pterygoid lamina paste tightly, concrete both sides face and H shaped steel bottom pterygoid lamina edge parallel and level, be equipped with the interval space between concrete top and the H shaped steel top pterygoid lamina, H shaped steel middle part web one section bury underground in the concrete, another section is located the interval, H shaped steel middle part web be equipped with a plurality of mutual isolations, can hold the through-hole that the reinforcing bar passed on one section that is located the interval space.
2. The steel-concrete composite beam as claimed in claim 1, wherein the H-section steel is one of general H-section steel, honeycomb H-section steel, variable section H-section steel, and unequal flange H-section steel.
3. The steel-concrete composite beam as claimed in claim 1, wherein the concrete is one of general concrete, lightweight aggregate concrete, self-compacting concrete, high-strength concrete and lightweight foamed concrete.
4. The reinforced concrete composite beam as claimed in claim 1, wherein the reinforcing mesh comprises a plurality of transversal stirrups passing through the web of the H-section steel and a plurality of vertical reinforcing bars connected to the transversal stirrups.
5. The steel-concrete composite girder according to claim 1, wherein said steel-concrete composite girder is fixed to a floor slab, said space is provided in the floor slab, said floor slab is provided with shear reinforcement bars, and said shear reinforcement bars pass through holes formed in a web.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010099546.2A CN111119407A (en) | 2020-02-18 | 2020-02-18 | A steel-concrete composite beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010099546.2A CN111119407A (en) | 2020-02-18 | 2020-02-18 | A steel-concrete composite beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111119407A true CN111119407A (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010099546.2A Pending CN111119407A (en) | 2020-02-18 | 2020-02-18 | A steel-concrete composite beam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508050A (en) * | 2022-04-19 | 2022-05-17 | 中铁工程设计咨询集团有限公司 | Straddle type single-rail steel-concrete combined track beam and erection method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6807789B1 (en) * | 2003-05-23 | 2004-10-26 | Daewoo Engineering & Construction Co., Ltd | Steel-concrete composite beam using asymmetric section steel beam |
| CN105908882A (en) * | 2016-05-31 | 2016-08-31 | 安徽富煌建筑设计研究有限公司 | Reinforced concrete box-girder with lowerable section height and construction method thereof |
| CN209179321U (en) * | 2018-11-21 | 2019-07-30 | 江南大学 | A "T-shape" partially prefabricated steel-concrete composite beam |
| CN110761464A (en) * | 2019-12-03 | 2020-02-07 | 中冶建筑研究总院有限公司 | Through-type full precast floor assembled steel-concrete composite floor system |
| CN211775097U (en) * | 2020-02-18 | 2020-10-27 | 孙叶根 | Steel-concrete composite beam |
-
2020
- 2020-02-18 CN CN202010099546.2A patent/CN111119407A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6807789B1 (en) * | 2003-05-23 | 2004-10-26 | Daewoo Engineering & Construction Co., Ltd | Steel-concrete composite beam using asymmetric section steel beam |
| CN105908882A (en) * | 2016-05-31 | 2016-08-31 | 安徽富煌建筑设计研究有限公司 | Reinforced concrete box-girder with lowerable section height and construction method thereof |
| CN209179321U (en) * | 2018-11-21 | 2019-07-30 | 江南大学 | A "T-shape" partially prefabricated steel-concrete composite beam |
| CN110761464A (en) * | 2019-12-03 | 2020-02-07 | 中冶建筑研究总院有限公司 | Through-type full precast floor assembled steel-concrete composite floor system |
| CN211775097U (en) * | 2020-02-18 | 2020-10-27 | 孙叶根 | Steel-concrete composite beam |
Non-Patent Citations (3)
| Title |
|---|
| 吴之乃等: "建筑业10项新技术及其应用", vol. 1, 31 October 2001, 中国建筑工业出版社, pages: 286 - 289 * |
| 新疆建设工程造价管理协会等: "建设工程计量与计价实务 土木建筑工程", vol. 1, 30 September 2019, 中国建材工业出版社, pages: 31 - 33 * |
| 王士奇;刘坤;王玉华;: "大跨度钢-混凝土组合梁分析与设计", 钢结构, no. 02, 22 February 2011 (2011-02-22) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508050A (en) * | 2022-04-19 | 2022-05-17 | 中铁工程设计咨询集团有限公司 | Straddle type single-rail steel-concrete combined track beam and erection method |
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Application publication date: 20200508 |