CN217204821U - Beam-free floor slab column node reinforced by profile steel shear frame with studs - Google Patents
Beam-free floor slab column node reinforced by profile steel shear frame with studs Download PDFInfo
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- CN217204821U CN217204821U CN202220687349.7U CN202220687349U CN217204821U CN 217204821 U CN217204821 U CN 217204821U CN 202220687349 U CN202220687349 U CN 202220687349U CN 217204821 U CN217204821 U CN 217204821U
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Abstract
The utility model discloses a stud-added beam-free floor slab column node reinforced by a section steel shear frame, which comprises a reinforced concrete beam-free floor system and a reinforced concrete column which are integrally poured, wherein a cross-shaped steel shear frame is arranged at the position of a connecting node of the reinforced concrete beam-free floor system and the reinforced concrete column, and the center of the cross-shaped steel shear frame is coincided with the position of the connecting node; more than one row of studs are transversely welded on a web plate of the cross-shaped steel shear frame. The utility model not only improves the problem that the single web plate can not completely exert the shearing-resistant bearing capacity, but also improves the shearing-resistant bearing capacity due to the stud; in addition, discontinuous pegs are adopted, so that the shearing-resistant bearing capacity is improved, and the steel consumption is saved.
Description
Technical Field
The utility model relates to a building engineering field specifically is a beamless floor slab column node that shaped steel shear frame who adds the peg is strengthened.
Background
The reinforced concrete plate column structure is a traditional structure widely used in practical engineering, and its main form is characterized by that it does not set frame beam under the floor slab, but makes the structural column directly support the beamless floor slab, and its planar floor slab is called beamless floor slab. Flat slabs are commonly used in multi-storey industrial and civil buildings, such as malls, refrigerators, warehouses, etc. The main difference between flat slabs and conventional ribbed slabs is that the slab load is transmitted directly to the foundation by the columns. The structure has simple force transmission and increases the floor clearance. But the joint area of the plate column structure has the combined action of larger shearing force and bending moment, so that the plate column joint of the flat slab is easy to be subjected to brittle punching damage.
In order to solve the above problems, there have been many measures for improving the anti-shear performance of the plate column node. Among them, the steel and concrete combined reinforcement is the most common and convenient one. This patent provides a beam-free floor slab column node that shaped steel shear frame that adds peg is strengthened, has saved the steel consumption when improving the node anti shear performance.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome prior art's shortcoming and not enough, provide a no roof beam slab post node that adds shaped steel shear frame enhancement of peg, saved the volume of using steel when can improving the node anti-shear performance.
The purpose of the utility model is realized through the following technical scheme:
a stud-added type steel shear frame reinforced girderless floor slab column node comprises a reinforced concrete girderless floor and a reinforced concrete column which are integrally poured, wherein a cross type steel shear frame is arranged at the position of a connecting node of the reinforced concrete girderless floor and the reinforced concrete column, and the center of the cross type steel shear frame is superposed with the position of the connecting node; more than one row of studs are transversely welded on a web plate of the cross-shaped steel shear frame.
The studs are distributed on the web plate of the cross-shaped steel shear frame in an upper row and a lower row in an array manner.
The studs are equidistantly distributed on a web plate of the cross-shaped steel shear frame.
The specification of the stud is M16, and 28 studs are welded on each limb extending arm of the cross-shaped steel.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
the utility model not only improves the problem that the single web plate can not completely exert the shearing-resistant bearing capacity, but also improves the shearing-resistant bearing capacity due to the stud; in addition, discontinuous pegs are adopted, so that the shearing-resistant bearing capacity is improved, and the steel consumption is saved.
Drawings
Fig. 1 is a schematic structural view of a beam-free floor slab column node reinforced by a stud-added section steel shear frame, which is a top view at this time.
Fig. 2 is the structural schematic diagram of an anti-cutting element of a beam-free floor slab column node reinforced by a profile steel shear frame with studs.
Wherein the reference numerals have the following meanings:
1-reinforced concrete flat slab, 2-reinforced concrete column, 3-cross steel shear frame and 4-stud.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.
Referring to fig. 1, the stud-added type steel shear frame reinforced flat slab column node comprises a reinforced concrete flat slab 1 and a reinforced concrete column 2 which are integrally cast, wherein a cross-shaped steel shear frame 3 is arranged in the reinforced concrete flat slab 1, and studs 4 which are equidistantly arranged are welded on the upper side and the lower side of each section of a steel web of the cross-shaped steel shear frame 3 respectively. The arrangement of the studs 4 can solve the problem that a single web plate cannot completely exert the shear bearing capacity, so that the connection between the reinforced concrete flat slab 1 and the cross-shaped steel shear frame 3 is more reliable, and the transmission of bending moment and shear force is facilitated; but the peg 4 itself also brings about an increase in the shear-resistance capacity.
The plurality of studs 4 are distributed on the web plate of the cross-shaped steel shear frame in an upper row and a lower row in an array manner;
a plurality of pegs 4 are welded to the web of the cross-shaped steel shear frame.
The peg 4 is M16 in size and 100mm in length.
Each extending arm of the cross-shaped steel shear frame is welded with 28 studs.
A plurality of said pegs 4 are equally spaced on each limb of the section steel;
the distance between two adjacent pegs 4 on the same limb is 100 mm.
The cross-shaped steel shear frame 2 has the cross-section size of 170mm multiplied by 12mm, and each extension arm of the cross-shaped steel shear frame 2 is 850mm in length.
The yield strength of the cross-shaped steel shear frame 2 is 345MPa, and the quality grade of the cross-shaped steel shear frame 2 is B grade.
According to the beam-free floor slab column node reinforced by the stud-added section steel shear frame, the cross-shaped section steel shear frame 3 is arranged at the slab column node of the beam-free floor 1, and the stud 4 is welded on the section steel shear frame 3, so that the problem that a single web cannot completely exert shear bearing capacity can be solved, the connection between the beam-free floor 1 and the section steel shear frame 3 is more reliable, and the transmission of bending moment and shear force is facilitated; the stud 4 itself also improves the shear resistance and bearing capacity; in addition, the discontinuous studs 3 are arranged, so that the beam-free floor slab column node can better meet the requirement of punching resistance on the premise of saving steel consumption.
Referring to fig. 2, the cross-shaped steel shear frame and the stud together constitute the anti-cutting component of the column node of the flat slab of this embodiment. In the utility model discloses a "CN 201220458463.9, well formula frame roof beam strengthen no roof beam connection structure" utility model patent also mentions and strengthens bending resistance bearing capacity, the anti ability of cutting of node through setting up stud and well formula frame roof beam at no roof beam floor node. By comparison, the following differences can be found:
1. in terms of construction:
(1) the main body of the connecting piece is different: the connecting piece in the comparison document is a rectangular cross beam, and the connecting piece in the patent is a web plate of a section steel shear frame.
(2) The orientation of the connectors and pegs is different: in the reference, longitudinal studs are attached to transverse reinforcing bars, whereas in this patent transverse studs are welded to the web of the steel section shear frame.
(3) The overall construction is different: the anti-cutting element in the comparison file is overall in a groined shape and comprises 4 rectangular cross beams, and each rectangular cross beam is divided into 2 sections of rectangular steel plates. The 4 rectangular cross beams are welded into a # -shape in a mutually overlapping manner, so that at least 8 welding seams are needed for completing the main body welding of the connecting piece. And anti cutting element in this patent is whole to be the cross, and the web is vertical placing, and the main part welding of accomplishing the connecting piece only needs 2 welding seams, and it is comparatively convenient to implement.
(4) The arrangement of the pegs is different: every two pegs in the comparison document are in a group, and the two pegs are close to each other in distance and basically close to each other; and because the stud direction is different with this patent, the arrangement mode of stud is also different, is two rows of arrangements about following the enhancement strip. Every stud in this patent all has a certain interval between, arranges two rows about respectively.
2. Functionally:
(1) the function of the connecting piece is different: the stud reinforcing strips (rectangular cross beams) in the comparison documents mainly have the function of improving the bending resistance bearing capacity of the plate column nodes; the main function of the profiled steel shear frame (web) in this patent is to increase the shear load capacity of the plate column node, considering that the shear failure (also referred to as bi-directional shear failure) of the plate column node is generally controlled by its shear load capacity.
(2) The function of the pegs is different: in the comparison document, the stud mainly has the function of anchoring the rectangular cross beam between the flat slab and the concrete so as to fully exert the bending resistance of the rectangular cross beam. The stud arranged in the patent strengthens the bending rigidity of the web plate and enables the web plate to fully exert shear-resistant bearing capacity. This part of the shear resistance is not available when only the web is acting alone. The essence of the stud function is that the bonding and force transmission capacity between the section steel web and the concrete is improved; meanwhile, the stud also plays a certain role in shearing resistance.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (4)
1. The utility model provides a no roof beam slab post node that shaped steel shear frame that adds peg was strengthened which characterized in that: the reinforced concrete flat slab and the reinforced concrete column are integrally cast, a cross-shaped steel shear frame is arranged at the position of a connecting node of the reinforced concrete flat slab and the reinforced concrete column, and the center of the cross-shaped steel shear frame is superposed with the position of the connecting node; more than one row of studs are transversely welded on a web plate of the cross-shaped steel shear frame.
2. The bolted profiled steel shear frame reinforced flat slab column node as claimed in claim 1, wherein: the studs are distributed on the web plate of the cross-shaped steel shear frame in an upper row and a lower row in an array manner.
3. The bolted profiled steel shear frame reinforced flat slab column node as claimed in claim 1, wherein: the studs are equidistantly distributed on a web plate of the cross-shaped steel shear frame.
4. The bolted profiled steel shear frame reinforced flat slab column node as claimed in claim 1, wherein: the specification of the stud is M16, and 28 studs are welded on each limb extending arm of the cross-shaped steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220687349.7U CN217204821U (en) | 2022-03-28 | 2022-03-28 | Beam-free floor slab column node reinforced by profile steel shear frame with studs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220687349.7U CN217204821U (en) | 2022-03-28 | 2022-03-28 | Beam-free floor slab column node reinforced by profile steel shear frame with studs |
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| CN217204821U true CN217204821U (en) | 2022-08-16 |
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| CN202220687349.7U Active CN217204821U (en) | 2022-03-28 | 2022-03-28 | Beam-free floor slab column node reinforced by profile steel shear frame with studs |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115450334A (en) * | 2022-09-29 | 2022-12-09 | 中建一局集团东南建设有限公司 | Anti-arc stiffness roof board structure shear key node |
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2022
- 2022-03-28 CN CN202220687349.7U patent/CN217204821U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115450334A (en) * | 2022-09-29 | 2022-12-09 | 中建一局集团东南建设有限公司 | Anti-arc stiffness roof board structure shear key node |
| CN115450334B (en) * | 2022-09-29 | 2024-03-29 | 中建一局集团东南建设有限公司 | Anti-arc stiffness roof board structure shear key node |
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