CN112814274B - Steel pipe concrete composite beam and installation and construction method thereof - Google Patents
Steel pipe concrete composite beam and installation and construction method thereof Download PDFInfo
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- CN112814274B CN112814274B CN202110139853.3A CN202110139853A CN112814274B CN 112814274 B CN112814274 B CN 112814274B CN 202110139853 A CN202110139853 A CN 202110139853A CN 112814274 B CN112814274 B CN 112814274B
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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
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
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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
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
- E04C3/22—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members built-up by elements jointed in line
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- Joining Of Building Structures In Genera (AREA)
Abstract
The steel tube concrete composite beam comprises first steel tube concrete, second steel tube concrete and a core plate, wherein a plurality of strip-shaped connecting plates perpendicular to the bottom end of the core plate are arranged at intervals along the length direction of the core plate, the middle of each strip-shaped connecting plate is connected with the core plate, a plurality of strip-shaped movable plates are arranged above the core plate and correspond to the strip-shaped connecting plates at intervals, a fastening bolt is connected between the left portion of each strip-shaped connecting plate and the left portion of each strip-shaped movable plate and between the right portion of each strip-shaped connecting plate and the right portion of each strip-shaped movable plate respectively, a plurality of square limiting holes are arranged at intervals along the length direction of the middle of the core plate, a plurality of steel bar columns are correspondingly arranged on the right wall of the first steel tube concrete, and a plurality of limiting grooves are correspondingly formed in the left wall of the second steel tube concrete. The invention can strengthen the connection strength between two concrete filled steel tube contact surfaces and reduce the risk of bending or breaking at the joint of the concrete filled steel tube combination beam.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a concrete filled steel tube composite beam and an installation and construction method thereof.
Background
Concrete-filled steel tubes refer to structural members which are formed by filling concrete in steel tubes and can bear the action of external load together with the core concrete of the steel tubes, and can be divided into round concrete-filled steel tubes, square and rectangular concrete-filled steel tubes, polygonal concrete-filled steel tubes and the like according to different cross-sectional forms.
At the work progress, when carrying out built-up connection to two steel pipe concretes and fix, the steel pipe concrete composite beam of current majority can't make the butt joint face between two steel pipe concretes also connect simultaneously and fix, for example there is certain contact surface between the adjacent rectangle steel pipe concretes, if this contact surface does not have any connection form, then lead to receiving external effort influence between the steel pipe concretes of combination to lead to the veneer atress and take place to buckle or fracture easily to the bearing effect and the stability of composite beam all cause the influence.
Disclosure of Invention
The invention aims to provide a concrete filled steel tube composite beam and an installation construction method thereof, which are used for enhancing the connection strength between two concrete filled steel tube contact surfaces and reducing the risk of bending or breaking at the joint of the concrete filled steel tube composite beam.
In order to solve the technical problems, the invention adopts the following technical scheme: a concrete-filled steel tube composite beam and an installation construction method thereof comprise first concrete-filled steel tube and second concrete-filled steel tube which are of rectangular structures, wherein a core plate is arranged between the right wall of the first concrete-filled steel tube and the left wall of the second concrete-filled steel tube in an splicing mode, a plurality of strip-shaped connecting plates perpendicular to the core plate are arranged at the bottom end of the core plate along the length direction of the core plate at intervals, the middle of each strip-shaped connecting plate is connected with the core plate, the left portion and the right portion of each strip-shaped connecting plate are respectively attached to the bottom surface of the first concrete-filled steel tube and the bottom surface of the second concrete-filled steel tube, a plurality of strip-shaped movable plates are arranged above the core plate corresponding to the strip-shaped connecting plates at intervals, a fastening bolt is respectively connected between the left portion of each strip-shaped connecting plate and the left portion of each strip-shaped movable plate and between the right portion of each strip-shaped connecting plate, and the rod portion of each strip-shaped movable plate, and one end of each fastening bolt penetrates through the strip-shaped connecting plate upwards, The core plate is characterized in that the first concrete filled steel tube or the second concrete filled steel tube and the strip-shaped movable plate are connected with a fastening nut, a plurality of square limiting holes are formed in the middle of the core plate at intervals along the length direction of the core plate, a plurality of steel bar columns are correspondingly arranged on the right wall of the first concrete filled steel tube, a plurality of limiting grooves are correspondingly formed in the left wall of the second concrete filled steel tube, and the right ends of the steel bar columns can penetrate through the limiting holes and can be inserted into the limiting grooves.
Furthermore, a plurality of threaded columns are arranged at intervals on the top end of the core plate along the length direction of the core plate, through holes for the threaded columns to penetrate through are formed in the middle of the strip-shaped movable plate, and middle nuts are screwed on the threaded columns above the strip-shaped movable plate.
Preferably, the height of the core plate is smaller than that of the first concrete filled steel tube.
More preferably, the threaded post is welded to the top end of the core plate.
More preferably, the left end of the steel bar column is inserted into the first steel pipe concrete and is fixedly connected with the first steel pipe concrete through concrete pouring.
More preferably, the first steel pipe concrete and the second steel pipe concrete are both provided with square through holes for the fastening bolts to pass through, the inner diameter of each square through hole is larger than the outer diameter of each fastening bolt, and the middle parts of the fastening bolts are coaxially and fixedly provided with square columns matched with the square through holes.
More preferably, the strip-shaped movable plate is consistent with the strip-shaped connecting plate in size and outline.
In the embodiment of the invention, the corresponding method for installing and constructing the concrete-filled steel tube composite beam comprises the following steps:
firstly, it is fixed on the beam seat with first steel pipe concrete hoist and mount earlier, then paste the core and lean on in first steel pipe concrete's right wall, make each spacing pot head on the steel bar post that corresponds simultaneously, on being located the beam seat on first steel pipe concrete right side with second steel pipe concrete hoist and mount again to make each steel bar post insert corresponding spacing groove, closely paste the back at first steel pipe concrete, core, second steel pipe concrete and fix the second steel pipe concrete on the beam seat again.
Secondly, the through holes of the strip-shaped movable plates are sleeved on the corresponding threaded columns, then the fastening bolts penetrate through the strip-shaped connecting plates, the corresponding steel pipe concrete and the strip-shaped movable plates and then are screwed up through the fastening nuts, finally the middle nuts are screwed up on the strip-shaped movable plates, so that the strip-shaped movable plates and the strip-shaped connecting plates are respectively tightly attached to the upper end faces and the lower end faces of the steel pipe concrete, the first steel pipe concrete and the second steel pipe concrete can be connected into a whole at the moment, and the steel pipe concrete composite beam is formed.
The invention has the beneficial effects that: when linking together two steel core concrete through core, bar connecting plate and bar fly leaf, the steel bar post of first steel core concrete right-hand member can pass the core and insert in the spacing groove of second steel core concrete left end to strengthen the joint strength between two steel core concrete contact surfaces, thereby reduce the risk that steel core concrete composite beam junction takes place to buckle or fracture, improve the overall stability of steel core concrete composite beam.
Drawings
FIG. 1 is a schematic overall structure diagram in an embodiment of the present invention;
FIG. 2 is a schematic sectional view of an embodiment;
FIG. 3 is a bottom view of the overall structure of the embodiment;
FIG. 4 is a schematic structural diagram of the first concrete filled steel tube and the second concrete filled steel tube before combination in the embodiment;
fig. 5 is a schematic structural view of the core board and the strip-shaped connecting board in the embodiment.
The reference signs are:
1-first concrete filled Steel tube 2-second concrete filled Steel tube 3-core plate
4-strip connecting plate 5-strip movable plate 6-fastening bolt
7-fastening nut 8-limiting hole 9-steel bar column
10-limit groove 11-thread column 12-middle nut
13-square through hole 14-square column.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
It should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used broadly in the present invention, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Further, in the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not in direct contact, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature. The terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the invention.
As shown in fig. 1-3, the concrete filled steel tube composite beam comprises a first concrete filled steel tube 1 and a second concrete filled steel tube 2 which are rectangular in structure, a core plate 3 is arranged between contact surfaces of the right wall of the first concrete filled steel tube 1 and the left wall of the second concrete filled steel tube 2, a plurality of strip-shaped connecting plates 4 which are perpendicular to the bottom end of the core plate 3 are arranged at intervals along the length direction of the bottom end of the core plate 3, the middle parts of the strip-shaped connecting plates 4 are connected with the core plate 3, the left parts and the right parts of the strip-shaped connecting plates 4 are respectively attached to the bottom surface of the first concrete filled steel tube 1 and the bottom surface of the second concrete filled steel tube 2, a plurality of strip-shaped movable plates 5 are arranged above the core plate 3 corresponding to the strip-shaped connecting plates 4 at intervals, a fastening bolt 6 is respectively connected between the left part of the strip-shaped connecting plates 4 and the left parts of the strip-shaped movable plates 5, and between the right parts of the strip-shaped connecting plates 4 and the strip-shaped movable plates 5, the one end in 6 pole portions of fastening bolt passes bar connecting plate 4 up respectively, first steel core concrete 1 or second steel core concrete 2, bar fly leaf 5 back is connected with a fastening nut 7, the middle part of core 3 is provided with a plurality of square spacing holes 8 along its length direction interval, the right wall correspondence of first steel core concrete 1 is provided with many steel bar columns 9, a plurality of spacing grooves 10 have been seted up to the left wall correspondence of second steel core concrete 2, the right-hand member of steel bar column 9 can pass spacing hole 8 and insert in the spacing groove 10.
According to the concrete-filled steel tube composite beam provided by the embodiment, when the core plate 3, the strip-shaped connecting plate 4 and the strip-shaped movable plate 5 are used for connecting two concrete-filled steel tubes together, the steel bar column 9 at the right end of the first concrete-filled steel tube 1 can penetrate through the core plate 3 and is inserted into the limiting groove 10 at the left end of the second concrete-filled steel tube 2 so as to enhance the connection strength between two concrete-filled steel tube contact surfaces, so that the risk of bending or breaking at the joint of the concrete-filled steel tube composite beam is reduced, and the overall stability of the concrete-filled steel tube composite beam is improved; moreover, as the strip-shaped connecting plates 4 and the strip-shaped movable plates 5 are multiple and are uniformly arranged on the end faces of the steel pipe concretes at intervals, more reliable connection tightness can be provided when the two steel pipe concretes are connected; in addition, set up reinforcing bar post 9 at first steel pipe concrete 1's right-hand member and set up corresponding spacing groove 10 at second steel pipe concrete 2's left end, except can playing interconnect and improving the effect of combination intensity, still can play obvious suggestion effect to find the contact surface fast when the in-process of installation construction is convenient for hoist and mount on the spot, prevent that the steel pipe concrete hoist and mount orientation is wrong, make constructor's operation more convenient.
During installation and construction, the first concrete-filled steel tube 1 is hoisted to a beam seat to be fixed, then the core plate 3 is attached to the right wall surface of the first concrete-filled steel tube 1, meanwhile, each limiting hole 8 is sleeved on the corresponding steel bar column 9, then the second concrete-filled steel tube 2 is hoisted to the beam seat on the right side of the first concrete-filled steel tube 1, each steel bar column 9 is inserted into the corresponding limiting groove 10, and the second concrete-filled steel tube 2 is fixed on the beam seat after the first concrete-filled steel tube 1, the core plate 3 and the second concrete-filled steel tube 2 are closely attached; and then sleeving the through holes of the strip-shaped movable plates 5 on the corresponding threaded columns 11, then enabling the fastening bolts 6 to penetrate through the strip-shaped connecting plates 4, the corresponding concrete-filled steel tubes and the strip-shaped movable plates 5 and then be screwed up by the fastening nuts 7, and finally screwing the middle nuts 12 on the strip-shaped movable plates 5, so that the strip-shaped movable plates 5 and the strip-shaped connecting plates 4 are respectively tightly attached to the upper end surfaces and the lower end surfaces of the concrete-filled steel tubes, and at the moment, the first concrete-filled steel tubes 1 and the second concrete-filled steel tubes 2 can be connected into a whole to form the concrete-filled steel tube composite beam.
Further, the top of core 3 is provided with a plurality of screw post 11 along its length direction interval, the through-hole that is used for supplying screw post 11 to pass is offered at the middle part of bar fly leaf 5, still connect in the middle of nut 12 on the screw post 11 that is located bar fly leaf 5 top soon, pass bar fly leaf 5 and connect in the middle of nut 12 through setting up screw post 11, can make the middle part of bar fly leaf 5 also can support closely and lean on the middle part at the concrete filled steel tube combination roof beam, the fastness of bar fly leaf 5 self has been improved on the one hand, on the other hand has also improved the fastness of core 3 that is located between the combination roof beam, and simultaneously, the joint strength between two adjacent concrete filled steel tubes has also correspondingly been improved.
On the basis, core 3 highly be less than first steel core concrete 1's height, this makes threaded column 11 partly can be located between two steel core concrete's the clearance, thereby play certain degree's guard action to threaded column 11, and threaded column 11 accessible welded mode fixed connection is on core 3's top, such fastness is more objective, and is corresponding, in order to improve structural strength, bar connecting plate 4 also can weld in core 3's bottom in advance (of course, for construction convenience and avoid the influence that machining error brought, also can make bar connecting plate 4 install steel core concrete's bottom surface at the scene).
Preferably, the left end of the steel bar column 9 is inserted into the first concrete filled steel tube 1 and is fixedly connected with the first concrete filled steel tube 1 through concrete pouring, which makes the connection between the steel bar column 9 and the first concrete filled steel tube 1 more desirable.
More preferably, the first concrete filled steel tube 1 and the second concrete filled steel tube 2 are both provided with a square through hole 13 for the fastening bolt 6 to pass through, the inner diameter of the square through hole 13 is larger than the outer diameter of the fastening bolt 6, a square column 14 matched with the square through hole 13 is coaxially and fixedly arranged in the middle of the fastening bolt 6, and thus, in the installation and construction process, the fastening bolt 6 does not need to be in threaded connection with the concrete filled steel tube, but directly penetrates through the square column, so that the installation convenience is greatly improved, only the fastening nut 7 at one end of the square column is screwed, the rotation freedom degree of the fastening bolt 6 is limited by matching with the square column 14, the fastening bolt 6 can be quickly locked, and in addition, in the process of adjusting the fastening nut 7, since the square column 14 is matched with the square through hole 13 to prevent the fastening bolt 6 from rotating, it also serves to prevent the bar-shaped connecting plate 4 and the bar-shaped movable plate 5 from being loose and biased.
In addition, in this embodiment, the size and the profile of the strip-shaped movable plate 5 are consistent with those of the strip-shaped connecting plate 4, so that the strip-shaped movable plate 5 can be manufactured conveniently, the strip-shaped connecting plate 4 can be manufactured in the same batch, and the strip-shaped movable plate 5 can be formed by drilling in the middle of one part of the strip-shaped movable plate.
The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.
Some of the drawings and descriptions of the present invention have been simplified to facilitate the understanding of the improvements over the prior art by those skilled in the art, and some other elements have been omitted from this document for the sake of clarity, and it should be appreciated by those skilled in the art that such omitted elements may also constitute the subject matter of the present invention.
Claims (6)
1. Concrete-filled steel tube composite beam, including first concrete-filled steel tube (1) and second concrete-filled steel tube (2) that are the cuboid structure, its characterized in that: the concrete-filled steel tube core is characterized in that a core plate (3) is arranged between the right wall of the first concrete-filled steel tube (1) and the left wall of the second concrete-filled steel tube (2) in a splicing mode, a plurality of strip-shaped connecting plates (4) perpendicular to the core plate are arranged at the bottom end of the core plate (3) along the length direction of the core plate at intervals, the middle of each strip-shaped connecting plate (4) is connected with the core plate (3), the left portion and the right portion of each strip-shaped connecting plate (4) are respectively attached to the bottom surface of the first concrete-filled steel tube (1) and the bottom surface of the second concrete-filled steel tube (2), a plurality of strip-shaped movable plates (5) are arranged above the core plate (3) corresponding to the strip-shaped connecting plates (4) at intervals, a fastening bolt (6) is respectively connected between the left portion of each strip-shaped connecting plate (4) and the left portion of each strip-shaped movable plate (5) and between the right portion of each strip-shaped movable plate (5), one end of the rod part of the fastening bolt (6) upwards penetrates through the strip-shaped connecting plate (4), the first steel pipe concrete (1) or the second steel pipe concrete (2) and the strip-shaped movable plate (5) respectively and then is connected with a fastening nut (7), the middle part of the core plate (3) is provided with a plurality of square limiting holes (8) at intervals along the length direction, the right wall of the first steel pipe concrete (1) is correspondingly provided with a plurality of steel bar columns (9), the left wall of the second steel pipe concrete (2) is correspondingly provided with a plurality of limiting grooves (10), the right end of each steel bar column (9) can penetrate through the corresponding limiting hole (8) and be inserted into the corresponding limiting groove (10), the top end of the core plate (3) is provided with a plurality of threaded columns (11) at intervals along the length direction, the middle part of the strip-shaped movable plate (5) is provided with a through hole for the threaded column (11) to penetrate through, and a middle nut (12) is screwed on the threaded column (11) above the strip-shaped movable plate (5), and the height of the core plate (3) is smaller than that of the first concrete filled steel tube (1).
2. The concrete filled steel tube composite beam according to claim 1, wherein: the threaded column (11) is welded at the top end of the core plate (3).
3. The concrete filled steel tube composite beam according to claim 1, wherein: the left end of the steel bar column (9) is inserted into the first concrete filled steel tube (1) and is fixedly connected with the first concrete filled steel tube (1) through concrete pouring.
4. The concrete filled steel tube composite beam according to claim 1, wherein: the concrete-filled steel tube (1) and the second concrete-filled steel tube (2) are provided with square through holes (13) used for allowing fastening bolts (6) to pass, the inner diameter of each square through hole (13) is larger than the outer diameter of each fastening bolt (6), and square columns (14) matched with the square through holes (13) are coaxially and fixedly arranged in the middle of the fastening bolts (6).
5. The concrete filled steel tube composite beam according to claim 1, wherein: the size and the contour of the strip-shaped movable plate (5) are consistent with those of the strip-shaped connecting plate (4).
6. The method for installing and constructing the concrete-filled steel tube composite beam is characterized in that the structure of the concrete-filled steel tube composite beam is as set forth in claim 1, and during installation and construction:
firstly, hoisting a first steel pipe concrete (1) to a beam seat for fixing, then attaching a core plate (3) to the right wall surface of the first steel pipe concrete (1), simultaneously sleeving each limiting hole (8) on a corresponding steel bar column (9), hoisting a second steel pipe concrete (2) to the beam seat on the right side of the first steel pipe concrete (1), inserting each steel bar column (9) into a corresponding limiting groove (10), and fixing the second steel pipe concrete (2) on the beam seat after the first steel pipe concrete (1), the core plate (3) and the second steel pipe concrete (2) are closely attached;
two, with the through-hole cover of each bar fly leaf (5) on corresponding screw post (11), then pass bar connecting plate (4) with fastening bolt (6), reuse fastening nut (7) are screwed up behind corresponding steel pipe concrete and bar fly leaf (5), screw up on bar fly leaf (5) with middle nut (12) at last, so that bar fly leaf (5) and bar connecting plate (4) are respectively the close up and lean on at each steel pipe concrete's up end and lower terminal surface, can link into an organic whole with first steel pipe concrete (1) and second steel pipe concrete (2) this moment, form steel pipe concrete composite beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110139853.3A CN112814274B (en) | 2021-02-02 | 2021-02-02 | Steel pipe concrete composite beam and installation and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110139853.3A CN112814274B (en) | 2021-02-02 | 2021-02-02 | Steel pipe concrete composite beam and installation and construction method thereof |
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| Publication Number | Publication Date |
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| CN112814274A CN112814274A (en) | 2021-05-18 |
| CN112814274B true CN112814274B (en) | 2022-06-24 |
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| WO2007104251A1 (en) * | 2006-03-12 | 2007-09-20 | Jianjun Yan | A floating latticework |
| CN103924674A (en) * | 2014-04-29 | 2014-07-16 | 东南大学 | High-strength bolt shear key structure and constructing method thereof |
| CN204826424U (en) * | 2015-08-02 | 2015-12-02 | 长安大学 | Prefabricated assembled steel bar connection device for concrete member |
| CN206667596U (en) * | 2017-04-01 | 2017-11-24 | 江苏建筑职业技术学院 | A kind of detachable assembling type concrete-filled circular steel tube column |
| CN211058111U (en) * | 2019-10-21 | 2020-07-21 | 深圳金鑫绿建股份有限公司 | Connecting structure of precast concrete board and steel beam |
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2021
- 2021-02-02 CN CN202110139853.3A patent/CN112814274B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007104251A1 (en) * | 2006-03-12 | 2007-09-20 | Jianjun Yan | A floating latticework |
| CN103924674A (en) * | 2014-04-29 | 2014-07-16 | 东南大学 | High-strength bolt shear key structure and constructing method thereof |
| CN204826424U (en) * | 2015-08-02 | 2015-12-02 | 长安大学 | Prefabricated assembled steel bar connection device for concrete member |
| CN206667596U (en) * | 2017-04-01 | 2017-11-24 | 江苏建筑职业技术学院 | A kind of detachable assembling type concrete-filled circular steel tube column |
| CN211058111U (en) * | 2019-10-21 | 2020-07-21 | 深圳金鑫绿建股份有限公司 | Connecting structure of precast concrete board and steel beam |
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