CN101338608A - Steel-concrete combined conversion joist - Google Patents
Steel-concrete combined conversion joist Download PDFInfo
- Publication number
- CN101338608A CN101338608A CNA2008101194028A CN200810119402A CN101338608A CN 101338608 A CN101338608 A CN 101338608A CN A2008101194028 A CNA2008101194028 A CN A2008101194028A CN 200810119402 A CN200810119402 A CN 200810119402A CN 101338608 A CN101338608 A CN 101338608A
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- concrete
- steel
- girder
- combined conversion
- span
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- 239000004567 concrete Substances 0.000 title claims abstract description 48
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 42
- 239000010959 steel Substances 0.000 claims abstract description 42
- 238000005452 bending Methods 0.000 claims abstract description 7
- 238000005192 partition Methods 0.000 claims description 17
- 238000010276 construction Methods 0.000 abstract description 3
- 238000010008 shearing Methods 0.000 abstract 5
- 238000000465 moulding Methods 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
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Abstract
The invention discloses a steel-concrete combined conversion girder which relates to a conversion structure used in tall buildings and skyscrapers. The combined conversion beam consists of a steel box girder, concrete poured on the top of and in the steel box girder and a shearing resistant connector. Concrete is poured on the upper part inside the steel box in the span-center bending moment area to solve the problem of the insufficient pressing area of concrete on the top of the steel box girder; concrete is not poured on a lower part inside the steel box in the span-center bending moment area, which effectively reduces the self-weight of the structure. Concrete is poured in the steel box at the girder end to keep the stability of the steel girder and to increase the vertical shearing resistant capability and the stiffness of the structure. The shearing resistant connector combines the steel girder with concrete and transfers the shearing force between the steel girder and concrete and prevents the steel girder from separating from concrete. The combined conversion girder provided by the invention is light and can save moulding boards and scaffolding; the construction of the combined conversion girder is convenient and can avoid the problem of the crack of the concrete in the span center; meanwhile, the combined conversion girder has higher stiffness and loading capacity, particularly has higher shearing resistant loading capacity at the girder end. The combined conversion girder has wider application perspective in tall buildings and skyscrapers.
Description
Technical field
The present invention relates to a kind of steel-concrete combined conversion joist that can be applicable to high level and super highrise building.Belong to the building structure technology field.
Background technology
For high level and super highrise building, large span spaces such as market, saloon, parking lot are set for the bottom at building, often need change form of structure along short transverse, and transformational structure is set at the position that form of structure changes, be passed to the requirement of substructure to realize superstructure internal force.Conversion beam is the most frequently used transformational structure form, at present reinforced concrete beam, prestressed concrete beam or steel framed concrete beam of adopting more.These conventional conversion beams in use exist a lot of not enough because deadweight is big, constructional difficulties and be difficult to effectively control crack on concrete.The steel-concrete composite beam of T section is a kind of efficient and rational horizontal load-carrying members forms owing to can give full play to the performance advantage of two kinds of materials.But when the steel-concrete composite beam of T section used as conversion beam, the effective width of its concrete flange plate was not enough usually, cause compound beam natural axis position lower, thereby reduced the operating efficiency of compound beam, and the scarce capacity of opposing hogging moment.The box section steel-concrete combined conversion joist that the present invention proposes fills concrete by the rational position in case, both can effectively increase concrete pressure zone area, prevents the pressurized flexing of girder steel bottom flange, also can strengthen vertical shear resistance.This combined conversion joist has bearing capacity height, big, little, the advantages such as cracking resistance good, easy construction of deadweight of rigidity, is applicable to the beam type transferring structure in high-rise and the super highrise building.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can significantly improve that structural bearing capacity height, rigidity are big, deadweight is little, the steel-concrete combined conversion joists of advantages such as cracking resistance good, easy construction.Fill concrete by the rational position in case, both can effectively increase concrete pressure zone area, prevent the pressurized flexing of girder steel bottom flange, also can strengthen vertical shear resistance.
Technical scheme of the present invention is as follows:
A kind of steel-concrete combined conversion joist is characterized in that: this combined conversion joist is made of steel case beam, concrete 5 and shear connector 6; Described steel case beam is made up of top board 1, web 2, base plate 3 and internal partition 4; Described internal partition is arranged on positive bending moment district in the steel case girder span, and this internal partition is divided into 2 case chambers up and down with steel case beam; Described concrete 5 is cast in the top of steel case beam, and the inside of the top of span centre internal partition 4 and beam-ends steel case beam; Described shear connector 6 is welded in top board, web, base plate and internal partition near a concrete side.
The length of internal partition of the present invention accounts for 1/2～2/3 of beam span.Described shear connector adopts peg.
The present invention has the following advantages with respect to prior art and gives prominence to effect: the present invention is combined by shear connector by steel case beam and concrete, and steel work is a produce in factory partly, is easy to ensure the quality of products; Span centre positive bending moment district steel case internal upper part concreting can solve the problem of steel case back portion concrete flange plate compression area deficiency; The bottom does not have concrete in the span centre positive bending moment district steel case, can effectively reduce dead load; Concreting in the beam-ends steel case can prevent the girder steel unstability, improves vertical shear resistance, and increases the rigidity of structure; Concrete directly utilizes steel case beam to carry out cast in situs, and the form work engineering amount is little, and is easy to control quality; Steel work part weight is lighter, brings convenience to installation in position; The concrete with encased steel plate of combined conversion joist span centre tensile region is avoided the influence of concrete cracking, and is convenient to maintenance, good endurance.
Description of drawings
Fig. 1 is the elevational schematic view of steel-concrete combined conversion joist.
Fig. 2 is the spaning middle section schematic diagram (A-A section) of steel-concrete combined conversion joist.
Fig. 3 is the beam-ends schematic cross-section (B-B section) of steel-concrete combined conversion joist.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described.
Steel-concrete combined conversion joist provided by the invention is made of steel case beam, concrete 5 and shear connector 6; Steel case beam is made up of top board 1, web 2, base plate 3 and internal partition 4, and steel plate thickness is determined by calculating according to beam span and load size.Internal partition 4 is positioned at span centre positive bending moment district, and this internal partition 4 is divided into 2 case chambers up and down with steel case beam, and length generally accounts for 1/2～2/3 of beam span.Steel case back portion is along elongated concreting 5, and the concrete width is determined according to the instructions for use of building.Span centre steel case beam internal partition 4 is with top concreting 5, the inner concreting 5 of beam-ends steel case beam.Concrete 5 planted agents are provided with reinforcing bar as required, are used to improve the shear-carrying capacity of shear connector 6, participate in whole stressed to improve the supporting capacity of compound beam simultaneously.Shear connector 6 generally should adopt peg, and nail solder is connected to top board 1, web 2, base plate 3 and internal partition 4 near a concrete side, and the peg diameter is generally 16～22mm.
Claims (3)
1. steel-concrete combined conversion joist is characterized in that: this combined conversion joist is made of steel case beam, concrete (5) and shear connector (6); Described steel case beam is made up of top board (1), web (2), base plate (3) and internal partition (4); Described internal partition (4) is arranged on positive bending moment district in the steel case girder span, and this internal partition is divided into 2 case chambers up and down with steel case beam; Described concrete (5) is cast in the top of steel case beam, and the inside of the top of span centre internal partition (4) and beam-ends steel case beam; Described shear connector (6) is welded in top board, web, base plate and internal partition near a concrete side.
2. according to the described steel-concrete combined conversion joist of claim 1, it is characterized in that: the length of described internal partition accounts for 1/2～2/3 of beam span.
3. according to claim 1 or 2 described steel-concrete combined conversion joists, it is characterized in that: described shear connector (6) adopts peg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101194028A CN101338608B (en) | 2008-08-29 | 2008-08-29 | Steel-concrete combined conversion joist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101194028A CN101338608B (en) | 2008-08-29 | 2008-08-29 | Steel-concrete combined conversion joist |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101338608A true CN101338608A (en) | 2009-01-07 |
| CN101338608B CN101338608B (en) | 2010-07-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101194028A Expired - Fee Related CN101338608B (en) | 2008-08-29 | 2008-08-29 | Steel-concrete combined conversion joist |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101338608B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105064578A (en) * | 2015-08-12 | 2015-11-18 | 广东省建筑设计研究院 | Full-web type steel box transfer beam and connecting structure of full-web type steel box transfer beam and reinforced concrete shear wall |
| CN105888135A (en) * | 2016-06-02 | 2016-08-24 | 贵州大学 | Novel steel-concrete combined open web girder and manufacturing method thereof |
| CN108265882A (en) * | 2018-02-02 | 2018-07-10 | 厦门源昌城建集团有限公司 | A kind of steel plate-stone combination beam and its construction method for long-span space |
| CN112359701A (en) * | 2020-11-02 | 2021-02-12 | 中铁五局集团第一工程有限责任公司 | Steel box girder |
| CN112359702A (en) * | 2020-11-02 | 2021-02-12 | 中铁五局集团第一工程有限责任公司 | Steel box girder bridge and manufacturing method thereof |
| CN112746554A (en) * | 2021-02-08 | 2021-05-04 | 清华大学 | Combined capping beam and bridge with same |
| CN114382002A (en) * | 2020-10-20 | 2022-04-22 | 华中科技大学 | Steel box-concrete composite beam inter-box beam connecting structure and construction method |
| CN114892870A (en) * | 2022-06-14 | 2022-08-12 | 河南黄国钢结构有限公司 | Steel and concrete assembled structure and forming device thereof |
| CN115323892A (en) * | 2022-07-04 | 2022-11-11 | 湖南大学 | Light combined box girder structure and construction method thereof |
| CN115387537A (en) * | 2022-09-13 | 2022-11-25 | 傅银新 | Frame beam structure |
-
2008
- 2008-08-29 CN CN2008101194028A patent/CN101338608B/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105064578A (en) * | 2015-08-12 | 2015-11-18 | 广东省建筑设计研究院 | Full-web type steel box transfer beam and connecting structure of full-web type steel box transfer beam and reinforced concrete shear wall |
| CN105888135A (en) * | 2016-06-02 | 2016-08-24 | 贵州大学 | Novel steel-concrete combined open web girder and manufacturing method thereof |
| CN108265882A (en) * | 2018-02-02 | 2018-07-10 | 厦门源昌城建集团有限公司 | A kind of steel plate-stone combination beam and its construction method for long-span space |
| CN108265882B (en) * | 2018-02-02 | 2024-04-09 | 厦门源昌城建集团有限公司 | Steel plate-stone composite beam for large-span space and construction method thereof |
| CN114382002A (en) * | 2020-10-20 | 2022-04-22 | 华中科技大学 | Steel box-concrete composite beam inter-box beam connecting structure and construction method |
| CN112359701A (en) * | 2020-11-02 | 2021-02-12 | 中铁五局集团第一工程有限责任公司 | Steel box girder |
| CN112359702A (en) * | 2020-11-02 | 2021-02-12 | 中铁五局集团第一工程有限责任公司 | Steel box girder bridge and manufacturing method thereof |
| CN112746554A (en) * | 2021-02-08 | 2021-05-04 | 清华大学 | Combined capping beam and bridge with same |
| CN114892870A (en) * | 2022-06-14 | 2022-08-12 | 河南黄国钢结构有限公司 | Steel and concrete assembled structure and forming device thereof |
| CN114892870B (en) * | 2022-06-14 | 2023-08-22 | 河南黄国钢结构有限公司 | Steel and concrete assembled structure and forming device thereof |
| CN115323892A (en) * | 2022-07-04 | 2022-11-11 | 湖南大学 | Light combined box girder structure and construction method thereof |
| CN115387537A (en) * | 2022-09-13 | 2022-11-25 | 傅银新 | Frame beam structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101338608B (en) | 2010-07-28 |
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Granted publication date: 20100728 Termination date: 20110829 |