CN204081070U - A kind of large span steel frame beam cantilevered structure - Google Patents
A kind of large span steel frame beam cantilevered structure Download PDFInfo
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- CN204081070U CN204081070U CN201420517069.7U CN201420517069U CN204081070U CN 204081070 U CN204081070 U CN 204081070U CN 201420517069 U CN201420517069 U CN 201420517069U CN 204081070 U CN204081070 U CN 204081070U
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Abstract
The utility model is a kind of large span steel frame beam cantilevered structure.Comprise steel reinforced concrete Cantilever Beams (1) and steel reinforced concrete Inner across Duan Liang (2), steel reinforced concrete Cantilever Beams (1) and steel reinforced concrete Inner are connected across the shaped steel in Duan Liang (2) or continuously uninterruptedly, steel reinforced concrete Cantilever Beams (1) and steel reinforced concrete Inner are bearing on support column (3) across Duan Liang (2).The utility model considers that public building general load is large, cantilever span is large, and due to clear height requirement, Cantilever Beams height has a definite limitation, adopts steel reinforced concrete conversion beam, effectively can reduce the deck-molding of Cantilever Beams, anti-bending bearing capacity is higher than the normal reinforced concrete beam of same cross-sectional, rely on configure reinforcing bar web bear shearing, its shear-carrying capacity significantly improves, and can effectively reduce the sectional dimension of component and load bearing beam power is high, rigidity is large, deflection deformation is little.The utility model design is ingenious, and function admirable is convenient and practical, can be building enterprise and obtains good economic benefit, the better functional requirement meeting building.
Description
Technical field
The utility model is large span steel frame beam cantilevered structure, belongs to the renovation technique of Long-span Cantilever structure.
Background technology
Along with the develop rapidly of China's urban construction, Long-span Cantilever form of structure is increasingly sophisticated, in public building, in order to meet owner's requirement, create larger space and facade effect more attractive in appearance, Long-span Cantilever structure has become a requisite part, therefore also creates Long-span Cantilever shaped steel coagulation girder construction component.Steel Reinforced Concrete Members forms entirety by built-in profile steel and reinforced concrete enveloped, jointly stressed.Its stress performance is better than the simple superposition of two kinds of structures, compare with reinforced concrete member with traditional steel beam column, there is following advantage: (1) is compared with steel work, external wrapping concrete can prevent the cripling unstability of steel beam column, improve the anti-pressure ability of steel beam column, the intensity of steel is fully played; In addition.External wrapping concrete overcomes the defect of the aspects such as the refractoriness of steel and antirust, anti-corrosive, decreases the frequent maintenance cost of the steel beam column in normal use, improves the durability of structure; Utilize concrete compressive property simultaneously.Comparatively steel saved greatly by steel work, less construction cost.(2) compared with reinforced concrete structure, built-in profile steel substantially increases the bearing capacity of component, can improve bearing capacity more than 1 times with section structural member, this just effectively reduces the sectional dimension of component, to the effective usable floor area of increase and raising clear height successful; Jointly play a role with built-in profile steel simultaneously, improve the shear-carrying capacity of component.Improve the fragility condition of component sheared destruction, enhance the ductility of component, improve the anti-seismic performance of structure.The existing earthquake resistant code of China is advocated and is used steel reinforced concrete on the component that some are important.But steel reinforced concrete does not use in the Long-span Cantilever structure of public building.
Summary of the invention
The purpose of this utility model is consider the problems referred to above and provide a kind of large span steel frame beam cantilevered structure.The utility model reduces the depth of section of crossbeam of encorbelmenting, and for owner creates larger usage space and facade effect more attractive in appearance, can meet the designing requirement of specification to the bearing capacity and stiffness of Cantilever Beams simultaneously.Long-span Cantilever reasonable in design of the present utility model, can make building enterprise obtain good economic benefit, the better functional requirement meeting building.
The technical solution of the utility model is: large span steel frame beam cantilevered structure of the present utility model, include steel reinforced concrete Cantilever Beams and steel reinforced concrete Inner across Duan Liang, steel reinforced concrete Cantilever Beams and steel reinforced concrete Inner are connected across the shaped steel in Duan Liang or continuously uninterruptedly, steel reinforced concrete Cantilever Beams and steel reinforced concrete Inner support on the support columns across Duan Liang.
The utility model forms overall structure owing to adopting steel concrete beam and steel concrete column by built-in profile steel and reinforced concrete enveloped.The utility model mainly considers that public building general load is large, cantilever span is large, and due to clear height requirement, Cantilever Beams height has a definite limitation, adopts steel reinforced concrete conversion beam, effectively can reduce the deck-molding of Cantilever Beams, anti-bending bearing capacity is higher than the normal reinforced concrete beam of same cross-sectional, the web relying on institute to configure reinforcing bar bears shearing, and its shear-carrying capacity open country is significantly improved, therefore can effectively reduce the sectional dimension of component and load bearing beam power is high, rigidity greatly, be out of shape little.The utility model design is ingenious, and function admirable is convenient and practical, can be building enterprise and obtains good economic benefit, the better functional requirement meeting building.
Accompanying drawing explanation
Fig. 1 is the cantilevered structure generalized section of the utility model embodiment;
Fig. 2 is the schematic cross-section of the long Cantilever Beams of the utility model embodiment.
Detailed description of the invention
Embodiment:
Structural representation of the present utility model as shown in Figure 1, large span steel frame beam cantilevered structure of the present utility model, include steel reinforced concrete Cantilever Beams 1 and steel reinforced concrete Inner across section beam 2, steel reinforced concrete Cantilever Beams 1 and steel reinforced concrete Inner are connected across the shaped steel in section beam 2 or continuously uninterruptedly, steel reinforced concrete Cantilever Beams 1 and steel reinforced concrete Inner are bearing on support column 3 across section beam 2.
In the present embodiment, above-mentioned support column 3 is reinforced concrete frame column, and build-in is in basement roof.
In the present embodiment, the steel concrete that above-mentioned girder with rolled steel section en cased in concrete 1 includes built-in profile steel 12 and wraps in outside built-in profile steel 12.Built-in profile steel 12 and the steel concrete wrapped in outside built-in profile steel 12 form overall structure.Built-in profile steel connects into entirety by the bond stress between concrete, increases cross section bending resistance shear resistance, improves cross section ductility.
In the present embodiment, set by above-mentioned girder with rolled steel section en cased in concrete 1, the both sides up and down of built-in profile steel 12 are also provided with vertical muscle 11.
In the present embodiment, above-mentioned built-in profile steel 12 is fixed by beam stirrup with vertical muscle 11, and built-in profile steel 12 is passed through together with beam stirrup colligation with vertical muscle 11.The material of beam stirrup is HRB400 level.
In the present embodiment, the left and right sides of the built-in profile steel 12 of above-mentioned girder with rolled steel section en cased in concrete 1 is also provided with waist muscle 13.
In the present embodiment, above-mentioned built-in profile steel 12 is fixed by beam stirrup with waist muscle 13, and built-in profile steel 12 is passed through together with beam stirrup colligation with waist muscle 13.The material of beam stirrup is HRB400 level.
In the present embodiment, the outside of above-mentioned waist muscle 13 is also provided with stirrup 14.Stirrup 14 had both secured waist muscle 13, and waist muscle 13 can improve again the shear resistance in cross section, made stirrup inner concrete form confined concrete simultaneously, improve the ductility in cross section.
In the present embodiment, the beam stirrup that between above-mentioned built-in profile steel 12 and vertical muscle 11, colligation is used can use bar dowel, and the beam stirrup that between waist muscle 13 and stirrup 14, colligation is used can use iron wire, and the material of vertical muscle 11 and waist muscle 13 is HRB400 levels, fy=360MPa; The material of stirrup 14 is HRB335, fy=300MPa.
The utility model makes the rigidity of structure increase, and meets the amount of deflection restriction requirement of specification better, effectively reduces Cantilever Beams cross section, be more conducive to the raising of element bearing capacity.The protective layer thickness of the girder with rolled steel section en cased in concrete reinforcing bar of steel reinforced concrete structure regulation and stipulation adopts 100mm, is the situation being applicable to only have muscle at the bottom of a row in fact, if end muscle is more than a row, suitably should increases protective layer thickness, otherwise can not install.Bond stress between type Steel concrete only has 1/2nd of round steel and concrete binding stress.Therefore in order to ensure concrete and shaped steel co-operation, need arrange shear connector, conventional is socket cap peg.Built-in profile steel itself also to note following some: (1), in order to play the maximum intensity of built-in profile steel, the frange plate of built-in profile steel should not punch.Holes in soffit needs welding steel to strengthen; (2) the suitable produce in factory of all welding, unsuitable on-the-spot welding, to ensure the welding quality of weld seam better; (3) spreading of built-in profile steel need avoid the node region of fine strain of millet post.In the present embodiment, girder with rolled steel section en cased in concrete 1, due to the existence of upper bottom flange, brings certain difficulty to concrete building, for guaranteeing that concreting is closely knit, and can in accordance with following construction technology.First be concrete under bottom flange building, vibrate from the blanking of section steel beam side, concrete is from bottom flange steel plate underflow to the opposite side of beam, and when being dipped on the steel plate of bottom flange after 50mm, then blanking is simultaneously vibrated from both sides.When building the first half of steel reinforced concrete fine strain of millet, from a certain bean column node, can extend along beam direction to another node.One-shot forming.This construction method of on-the-spot employing, can make horizontal tail listrium bubble easily overflow.Effectively ensure that concrete pouring quality.
Claims (8)
1. a large span steel frame beam cantilevered structure, it is characterized in that including steel reinforced concrete Cantilever Beams (1) and steel reinforced concrete Inner across Duan Liang (2), steel reinforced concrete Cantilever Beams (1) and steel reinforced concrete Inner are connected across the shaped steel in Duan Liang (2) or continuously uninterruptedly, steel reinforced concrete Cantilever Beams (1) and steel reinforced concrete Inner are bearing on support column (3) across Duan Liang (2).
2. large span steel frame beam cantilevered structure according to claim 1, it is characterized in that above-mentioned support column (3) is reinforced concrete frame column, build-in is in basement roof.
3. large span steel frame beam cantilevered structure according to claim 1 and 2, it is characterized in that above-mentioned girder with rolled steel section en cased in concrete (1) includes built-in profile steel (12) and wraps in the steel concrete in built-in profile steel (12) outside, built-in profile steel (12) and the steel concrete wrapped in outside built-in profile steel (12) form overall structure.
4. large span steel frame beam cantilevered structure according to claim 3, is characterized in that the both sides up and down of the set built-in profile steel (12) of above-mentioned girder with rolled steel section en cased in concrete (1) are also provided with vertical muscle (11).
5. large span steel frame beam cantilevered structure according to claim 4, is characterized in that above-mentioned built-in profile steel (12) and vertical muscle (11) are fixed together by beam stirrup colligation.
6. large span steel frame beam cantilevered structure according to claim 3, is characterized in that the left and right sides of the built-in profile steel (12) of above-mentioned girder with rolled steel section en cased in concrete (1) is also provided with waist muscle (13).
7. large span steel frame beam cantilevered structure according to claim 6, is characterized in that above-mentioned built-in profile steel (12) and waist muscle (13) are fixed together by beam stirrup colligation.
8. large span steel frame beam cantilevered structure according to claim 6, is characterized in that the outside of above-mentioned waist muscle (13) is also provided with stirrup (14).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420517069.7U CN204081070U (en) | 2014-09-10 | 2014-09-10 | A kind of large span steel frame beam cantilevered structure |
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| CN201420517069.7U CN204081070U (en) | 2014-09-10 | 2014-09-10 | A kind of large span steel frame beam cantilevered structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104818772A (en) * | 2015-05-06 | 2015-08-05 | 香港华艺设计顾问(深圳)有限公司 | Large-span long-cantilever connection structure and construction technique |
| CN109750791A (en) * | 2019-01-18 | 2019-05-14 | 中建八局第三建设有限公司 | A kind of assembled large overhanging steel structure |
| CN110397165A (en) * | 2019-07-30 | 2019-11-01 | 中信国安建工集团有限公司 | A kind of cantilevered structure and construction method |
| WO2023023685A1 (en) * | 2021-08-27 | 2023-03-02 | Immofinanz Ag | Supporting construction |
-
2014
- 2014-09-10 CN CN201420517069.7U patent/CN204081070U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104818772A (en) * | 2015-05-06 | 2015-08-05 | 香港华艺设计顾问(深圳)有限公司 | Large-span long-cantilever connection structure and construction technique |
| CN104818772B (en) * | 2015-05-06 | 2017-03-01 | 香港华艺设计顾问(深圳)有限公司 | A kind of large span long cantilever conjoined structure and construction technology |
| CN109750791A (en) * | 2019-01-18 | 2019-05-14 | 中建八局第三建设有限公司 | A kind of assembled large overhanging steel structure |
| CN109750791B (en) * | 2019-01-18 | 2024-03-01 | 中建八局第三建设有限公司 | Assembled large cantilever steel structure |
| CN110397165A (en) * | 2019-07-30 | 2019-11-01 | 中信国安建工集团有限公司 | A kind of cantilevered structure and construction method |
| CN110397165B (en) * | 2019-07-30 | 2024-04-09 | 中信国安建工集团有限公司 | Cantilever structure and construction method |
| WO2023023685A1 (en) * | 2021-08-27 | 2023-03-02 | Immofinanz Ag | Supporting construction |
| AT525391A1 (en) * | 2021-08-27 | 2023-03-15 | Immofinanz Ag | support structure |
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