CN209163061U - A kind of large span increases the connection structure of cantilever steel girder and former beams of concrete newly - Google Patents
A kind of large span increases the connection structure of cantilever steel girder and former beams of concrete newly Download PDFInfo
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- CN209163061U CN209163061U CN201821755290.0U CN201821755290U CN209163061U CN 209163061 U CN209163061 U CN 209163061U CN 201821755290 U CN201821755290 U CN 201821755290U CN 209163061 U CN209163061 U CN 209163061U
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Abstract
The utility model discloses the connection structures that a kind of large span increases cantilever steel girder and former beams of concrete newly, former beams of concrete have continuous three it is associated with newly-increased cantilever steel girder, former beams of concrete sets U-shaped Baogang using anchor bolt, and newly-increased cantilever steel girder is the welded H section steel structure for including principal piece and more secondary sections；Principal piece is Cantilever Beams, is welded with the first secondary section, and the web of the first pair section and lower flange and the U-shaped Baogang of first former beams of concrete weld, and the top flange edge of the first secondary section extends to above the former flooring of last root original beams of concrete；Each pair section is connected by the former beams of concrete of the fixed plate blending bolt and both ends that are welded in U-shaped Baogang；Last secondary section has one end and last root original beams of concrete to be connected by fixed plate hinged on junction steel plate；The top flange of the first secondary section H profile steel and the top flange of all secondary section H profile steels are connected to drawing anchor bolt to pass through floor；Newly-increased cantilever steel girder and former beams of concrete are linked to be an entirety by above-mentioned each connection structure.
Description
Technical field
The utility model belongs to technical field of buildings, and in particular to a kind of connection of newly-increased cantilever steel girder and former beams of concrete
Technology.
Background technique
In the prior art, often have it is certain building need Rebuilding, extend new outrigger platform, this will involve with it is original
Reinforced beam connection.For Long-span Cantilever structure, if newly-increased beam uses armored concrete, beam section size compared with
Greatly, headroom is influenced, while Cantilever Beams upper reinforcement bar planting depth needs to amplify 1.5 times, bar planting constructional difficulties and quality are difficult to protect
Card；If newly-increased beam uses steel construction, overhanging depth of beam can control, but its top flange is held with node plate welding seams and top anchor bolt
By very big pulling force, design and construction are difficult.And for increasing joist steel structure newly, this is the emphasis of design.Former beams of concrete simultaneously
Bear high torque, it is also necessary to well solve.
Summary of the invention
The purpose of this utility model is to provide a kind of pair of existing building and needs to add cantilever steel girder to extend new overhanging and put down
A kind of solid and reliable and easy simple process organization plan of original reinforced beam connection is involved when platform.
The purpose of this utility model is achieved through the following technical solutions.
A kind of large span increases the connection structure of cantilever steel girder and former beams of concrete newly, characterized in that former beams of concrete is at least
There are continuous three, from first piece former beams of concrete every piece side and bottom surface setting U-shaped packets associated with newly-increased cantilever steel girder
Steel, the side of last root original beams of concrete and bottom surface are arranged U-shaped Baogang or junction steel plate, U-shaped Baogang only are arranged in medial surface
And the junction steel plate is connected using anchor bolt and former beams of concrete；Newly-increased cantilever steel girder is welded H section steel structure, and H profile steel includes
Setting one secondary section between principal piece and every adjacent two former beams of concretes；Principal piece H profile steel is overhanging Cantilever Beams, principal piece H profile steel
With each corresponding welding in the top flange of the first secondary section H profile steel immediately, web and lower flange, and the web of the two is by enhancing steel
Plate and using being bolted；The web of first secondary section H profile steel and lower flange and the U-shaped Baogang of first former beams of concrete weld,
The top flange of first secondary section H profile steel along extend to first, second until last root original beams of concrete former flooring above simultaneously
It is developed with former flooring；A second secondary section H profile steel is connected between first and second former beams of concrete, the second secondary section H profile steel
Both ends are respectively connected by the fixed plate and utilization bolt and the former beams of concrete at both ends that are welded in U-shaped Baogang；Remaining secondary section
The rest may be inferred for connection；Last secondary section H profile steel has one end to pass through the fixed plate in the U-shaped Baogang of former beams of concrete that is welded on before it
And be connected using bolt, the other end is consolidated with last root original beams of concrete by hinged on the junction steel plate or U-shaped Baogang
Fixed board is simultaneously connected using bolt；Floor is passed through by the top flange of the first secondary section H profile steel and all secondary section H profile steels to drawing anchor bolt
Top flange is connected；Newly-increased cantilever steel girder and former beams of concrete are linked to be an entirety by above-mentioned each connection structure.
Preferred embodiment, the fixed plate in U-shaped Baogang are to be symmetrical arranged about the web of H profile steel, and web is clipped in the middle
Recycle bolt tightening.
The top flange of preferred embodiment, the first secondary section H profile steel is made of thickening steel plate.
Preferred embodiment, original beams of concrete associated with newly-increased cantilever steel girder is continuous three.
The beneficial effects of the utility model are:
1, this structure is combined by multispan beam and converts reasonable stress, solves asking for newly-increased Cantilever Beams top tension difficulty
Topic；
2, the torque to former beams of concrete is reduced by extension steel beam simultaneously, making it only needs to carry out Flexural strength；
3, being reinforced by torsion for constructional difficulties is avoided；
4, it is structurally reasonable it is simple, manufacturing cost is lower.
Detailed description of the invention
Attached drawing 1 is an embodiment of the present invention structural schematic diagram；
Attached drawing 2 is the schematic top plan view of Fig. 1.
In figure, first former beams of concrete 1；Former flooring 11；Second former beams of concrete 2；U-shaped Baogang 3；Fixed plate 31；
Third root original beams of concrete 4；Junction steel plate 5；Anchor bolt 61；Bolt 62；Principal piece H profile steel 7；First secondary section H profile steel 71；Top flange
711；Web 712；Lower flange 713；Enhance steel plate 714；To drawing anchor bolt 8.
Specific embodiment
Elaborate with reference to the accompanying drawing to the embodiments of the present invention: the present embodiment is with the utility model technology
Implemented under premised on scheme, the detailed implementation method and specific operation process are given, but the protection of the utility model
Range is not limited to the following embodiments.
Embodiment: as shown in Figure 1, a kind of large span increases the connection structure of cantilever steel girder and former beams of concrete, former coagulation newly
Tu Liang at least continuous three associated with newly-increased cantilever steel girder, and the present embodiment is described for three, and the rest may be inferred by analogy；First
The side and bottom surface of the former beams of concrete 2 of former beams of concrete 1 and second are arranged U-shaped Baogang 3, third root original beams of concrete 4 it is interior
Side is arranged junction steel plate 5, U-shaped Baogang 3 and the junction steel plate 5 and is connected using anchor bolt 61 and former beams of concrete；Newly-increased overhanging
Girder steel is welded H section steel structure, and H profile steel includes principal piece and first, second, and third totally three secondary sections；Principal piece H profile steel 7 is outer
Stretch Cantilever Beams, principal piece H profile steel 7 and the top flange 711 of the first secondary section H profile steel 71, web 712 and lower flange 713 it is each it is corresponding weld,
And the web 712 of the two is connected by enhancing steel plate 714 and using bolt 62；The web 712 of first secondary section H profile steel 71 and under
The U-shaped Baogang 3 of the former beams of concrete 1 of the edge of a wing 713 and first welds, and the top flange 711 of the first secondary section H profile steel 71 is along extending to first
Root, second and third root original beams of concrete former flooring 11 develop above and with former flooring 11, the first secondary section H profile steel 71 it is upper
The edge of a wing 711 is made of thickening steel plate.A second secondary section H profile steel is connected between first and second former beams of concrete 2, the first He
Second secondary section H profile steel and the cooperation mechanism of adjacent two former beams of concretes are deployment and conjugation, and registration property is slightly interference
Preload fiting property, referring in particular to JB/Z144-79 provide.Third pair section H profile steel is connected to second and third root original coagulation
Between native beam 4；The both ends of second secondary section H profile steel respectively pass through the fixed plate 31 being welded in U-shaped Baogang 3 and utilization bolt 62 and two
The former beams of concrete at end is connected, and the fixed plate 31 in U-shaped Baogang 3 is to be symmetrical arranged about the web 712 of H profile steel, and by web
712, which are clipped in the middle, recycles bolt 62 to fasten.Third pair section H profile steel has one end by being welded on the U of second former beams of concrete 2
Fixed plate 31 and utilization bolt 62 in type Baogang 3 are connected, and the other end and third root original beams of concrete pass through the junction steel plate 5
Or hinged fixed plate 31 and utilization bolt 62 is connected in U-shaped Baogang 3；Floor is passed through by the first secondary section H profile steel to drawing anchor bolt 8
Top flange 711 and the top flange of second, third secondary section H profile steel are connected；Above-mentioned each connection structure is by newly-increased cantilever steel girder and raw steel
Concrete Beam Reinforced is linked to be an entirety.Referring to fig. 2.
The utility model is dexterously combined using the top flange of multistage auxiliary girder and the first auxiliary girder, by newly-increased cantilever steel girder for
The torque of raw steel Concrete Beam Reinforced is reasonably converted to the pulling force to more raw steel Concrete Beam Reinforceds, moment of flexure and pressure greatly
The bearing capacity of original structure is improved, the top flange of the therein first secondary section H profile steel is by an independent monolith and the steel plate structure of thickening
At, which assumes responsibility for the pulling force converted, due to without welding, avoiding the defect for defending the intensity for connecing steel decline, and
And be to thicken, so the top flange has especially powerful tensile strength.
The utility model solves the problems, such as that newly-increased Cantilever Beams connect difficulty with former concrete-steel beams, has easy to operate knot
The advantage that structure is simple, manufacturing cost is low.The basic principles and main features and this reality of the utility model have been shown and described above
With novel advantage.It should be understood by those skilled in the art that the present utility model is not limited to the above embodiments, above-mentioned implementation
Only illustrate the principles of the present invention described in example and specification, in the premise for not departing from the spirit and scope of the utility model
Under, the utility model also has various changes and improvements, these changes and improvements both fall within claimed invention model
In enclosing.The protection scope of the present invention is defined by the appended claims and their equivalents.
Claims (4)
1. the connection structure that a kind of large span increases cantilever steel girder and former beams of concrete newly, characterized in that former beams of concrete is at least
Continuous three are associated with newly-increased cantilever steel girder, and U-shaped Baogang is arranged in every side and bottom surface from first former beams of concrete,
The side of last root original beams of concrete and bottom surface are arranged U-shaped Baogang or junction steel plate, U-shaped Baogang and institute only are arranged in medial surface
Junction steel plate is stated to be connected using anchor bolt and former beams of concrete；Newly-increased cantilever steel girder is welded H section steel structure, and H profile steel includes principal piece
And a secondary section is set between former beams of concrete per adjacent two；Principal piece H profile steel is overhanging Cantilever Beams, principal piece H profile steel and tight
The top flange of the secondary section H profile steel of first connect, each corresponding welding of web and lower flange, and the web of the two is by enhancing steel plate simultaneously
Using being bolted；The web of first secondary section H profile steel and lower flange and the U-shaped Baogang of first former beams of concrete weld, and first
The top flange of secondary section H profile steel along extend to first, second until last root original beams of concrete former flooring above and with original
Flooring develops；A second secondary section H profile steel is connected between first and second former beams of concrete, the both ends of the second secondary section H profile steel
Respectively it is connected by the fixed plate and utilization bolt and the former beams of concrete at both ends that are welded in U-shaped Baogang；The connection of remaining secondary section
The rest may be inferred；Last secondary section H profile steel has one end to pass through the fixed plate and benefit in the U-shaped Baogang of former beams of concrete that is welded on before it
It is connected with bolt, the other end and last root original beams of concrete pass through fixed plate hinged on the junction steel plate or U-shaped Baogang
And it is connected using bolt；Floor is passed through by the upper limb of the top flange of the first secondary section H profile steel and all secondary section H profile steels to drawing anchor bolt
Edge is connected.
2. a kind of large span according to claim 1 increases the connection structure of cantilever steel girder and former beams of concrete, feature newly
It is that web is clipped in the middle to be symmetrical arranged about the web of H profile steel and recycles bolt tightening by the fixed plate in U-shaped Baogang.
3. a kind of large span according to claim 1 or 2 increases the connection structure of cantilever steel girder and former beams of concrete newly, special
Sign is that the top flange of the first secondary section H profile steel is made of thickening steel plate.
4. a kind of large span according to claim 3 increases the connection structure of cantilever steel girder and former beams of concrete, feature newly
It is that original beams of concrete associated with newly-increased cantilever steel girder is continuous three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821755290.0U CN209163061U (en) | 2018-10-29 | 2018-10-29 | A kind of large span increases the connection structure of cantilever steel girder and former beams of concrete newly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821755290.0U CN209163061U (en) | 2018-10-29 | 2018-10-29 | A kind of large span increases the connection structure of cantilever steel girder and former beams of concrete newly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209163061U true CN209163061U (en) | 2019-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821755290.0U Active CN209163061U (en) | 2018-10-29 | 2018-10-29 | A kind of large span increases the connection structure of cantilever steel girder and former beams of concrete newly |
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| Country | Link |
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| CN (1) | CN209163061U (en) |
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2018
- 2018-10-29 CN CN201821755290.0U patent/CN209163061U/en active Active
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