CN209837305U - Bolt connection folded plate type shear connector - Google Patents
Bolt connection folded plate type shear connector Download PDFInfo
- Publication number
- CN209837305U CN209837305U CN201920012636.6U CN201920012636U CN209837305U CN 209837305 U CN209837305 U CN 209837305U CN 201920012636 U CN201920012636 U CN 201920012636U CN 209837305 U CN209837305 U CN 209837305U
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- web
- shear connector
- plate
- folded
- flange plate
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Abstract
The utility model discloses a bolted connection folded plate formula shear connector, including the web, the web is formed by connecting in order a plurality of folded plates, a plurality of folded plates are the wave rugosity, all open the slotted hole on every folded plate, interval arrangement such as a plurality of slotted holes and center line are located a straight line, center line is all perpendicular with the major axis of every slotted hole, the relative both sides limit of web is connected with the flange board respectively, two flange boards are parallel to each other and perpendicular with the web, the flange board is perpendicular with the slotted hole major axis, the trompil of lower flange board, can adopt bolted connection with the girder steel. The utility model provides a shear connector rigidity, the intensity that exist can not satisfy the problem that the requirement easily takes place deformation among the prior art, solve traditional shear connector simultaneously, the difficult assurance problem of site welding construction complicacy, inefficiency, quality.
Description
Technical Field
The utility model belongs to the technical field of building engineering, concretely relates to bolted connection folded plate formula shear connector.
Background
With the development of building technology in China, the assembled structure is a future development trend. In the assembled steel structure, the connection application problem of the floor slab and the main structure is more. The good cooperative work performance of the floor slab and the steel beam is a necessary link for ensuring the safety of the whole structure. At present, the common shear connectors have more problems. The floor slab and the shear connector are key links for combining the steel beam and the precast concrete composite floor slab together to work together, play a decisive role in the overall performance of the connection of the precast concrete composite floor slab, the cast-in-place concrete floor slab and the steel beam, and are important means for ensuring the overall common stress and the coordinated deformation of the precast concrete composite floor slab and the cast-in-place concrete floor slab. Generally, the shear connector mainly functions as two: the device is used for bearing and transmitting the shearing force between the steel beam and the precast concrete slab; and the second is used for resisting the lifting force between the precast concrete plate and the steel beam. Shear connectors which are commonly used at present are divided into rigid connections and flexible connections, which have advantages, but have problems respectively, and the selection of the shear connectors is very important. The main characteristics of rigid shear connectors are high shear strength, but relatively high stress concentrations are induced in the surrounding concrete, and the structure will break immediately after the bearing capacity reaches the ultimate strength, which directly results in the concrete being crushed or the shear failure of the connector. The rigid shear connector mainly comprises: u-shaped connecting piece, 21274, square steel connecting piece, etc.
The main characteristic of the flexible shear connector is that ductile failure generally occurs, and the flexible shear connector has a certain protection effect on the structure, so the connector is more preferably adopted in engineering practice. When the floor system bears excessive load, certain displacement occurs at the joint of the floor and the steel beam, but the shear strength of the floor and the steel beam cannot be reduced immediately, and the shear force in the structure can be redistributed by utilizing the ductility of the flexible shear connector. The flexible shear connector mainly comprises: headed studs, diagonal reinforcing bars, ring reinforcing bars, channel steel and the like.
The stud is widely applied to the current building system because of the convenience of construction. The main problems with pegs are: when an effect acts on the structure, the stud connecting piece moves together with the steel beam, the load is transmitted to the root of the stud through the welding seam of the stud, the root of the stud deforms greatly, the stud shear-resistant connecting piece is subjected to the combined action of various forces, and under the action, the pressure borne by the root of the stud reaches the maximum value. Thus, a common form of failure is that the concrete at the root ahead of the peg is locally crushed or split, resulting in a failure of the overall structure. In addition, the connecting member is important for the stress performance of the fabricated floor, and generally, the connecting member needs to have good deformability in addition to strength and rigidity. Obviously, the stud connection has good deformability, but insufficient rigidity, and requires a large number of arrangements to achieve the intended effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a bolted connection folded plate formula shear connector has solved shear connector rigidity, the intensity that exists among the prior art and can not satisfy the problem that the requirement easily takes place deformation.
The utility model discloses the technical scheme who adopts is, bolted connection folded plate formula shear connector, a serial communication port, including the web, the web is formed by connecting in order a plurality of folded plates, a plurality of folded plates are the wave rugosity, the slotted hole has all been opened on every folded plate, a plurality of equidistant arrangements of slotted hole and center line are located a straight line, center line is all perpendicular with the major axis of every slotted hole, the relative both sides limit of web is connected with upper limb flange board and lower flange board respectively, upper limb flange board plays anti effect of dialling, lower flange board plays the connection effect, upper limb flange board and lower flange board are parallel to each other and perpendicular with the web, upper limb flange board and lower flange board are perpendicular with the slotted hole major axis, two adjacent folded plates constitute V font structure in the web, adjacent two V font structure opening angle that the folded plate constitutes is 60 ~ 120 degrees.
The utility model is also characterized in that,
the folded plates are welded in sequence.
The folded plates are integrally formed.
Still open the fixed orifices on the flange board down, still set up vertical twisted steel in the folded plate, the twisted steel passes the fixed orifices and fixes web and concrete slab drawknot.
The lower flange plate is 30-60 mm larger than the four sides of the upper flange plate.
The utility model has the advantages that the bolt is connected with the folded plate type shear connector, the shear rigidity of the connector is greatly increased, and the multiband web structure has good deformability while the rigidity is increased; the shear connector has no strong and weak axis, and compared with the traditional rigid connector and flexible connector, the shear connector belongs to semi-rigid connection, has obvious stiffness property and better deformability, and greatly improves the bearing capacity. Compared with the most common bolt connecting piece, the number of the connecting pieces in the same span section is obviously reduced, so that the construction efficiency is improved. The length of welding with the steel beam and the contact area with the concrete are larger than those of the stud connecting piece, so that the shear resistance and the lifting resistance are stronger, the structure is simple, the working efficiency is greatly improved, the processing and the construction are convenient, and the prefabricated steel beam can be prefabricated in advance. In the process of combining with the floor concrete, the arc-shaped tying reinforcing steel bars are arranged at the holes at the edges of the long round holes, the vertical tying reinforcing steel bars are arranged in the middle, the threaded reinforcing steel bars are adopted, and the hooks are arranged, so that the shearing-resistant bearing capacity can be improved, when the shearing-resistant connecting piece is about to be separated from the concrete slab, the tying effect is achieved, the floor is ensured not to collapse, the integrity of the floor and a main structure is greatly improved, and the integrity of the floor and the main structure is used as a second defense line for the safety of the floor and the main structure when a serious earthquake occurs, so that the survivability of the structure under the great earthquake is greatly improved.
Drawings
FIG. 1 is a schematic view of construction and installation of a bolted folded plate type shear connector with a trapezoidal section formed by three folded plates connected in sequence in a web;
FIG. 2 is a schematic view of a bolted folded plate type shear connector structure in which two adjacent folded plates in a web form a V-shaped structure.
In the figure, 1, a web plate, 2, a folded plate, 3, a flange plate, 4, a long round hole, 5, a twisted steel bar, 6, a fixing hole and 7, a lower flange plate.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model discloses bolted connection folded plate formula shear connector, the structure is as shown in figure 1, fig. 2 is shown, including web 1, web 1 is formed by connecting in order a plurality of folded plates 2, a plurality of folded plates 2 are the wave rugosity, all open slotted hole 4 on every folded plate 2, a plurality of equidistant arrangements of slotted hole 4 and center line are located a straight line, center line is all perpendicular with the major axis of every slotted hole 4, 1 relative both sides limit of web is connected with top flange board 3 and bottom flange board 7 respectively, top flange board 3 plays anti effect of dialling, bottom flange board 7 plays the connection effect, top flange board 3 and bottom flange board 7 are parallel to each other and are perpendicular with web 1, top flange board 3 and bottom flange board 7 are perpendicular with 4 major axes of slotted hole.
Two adjacent folded plates 2 in the web plate 1 form a V-shaped structure.
The opening angle of the V-shaped structure formed by two adjacent folded plates 2 is 60-120 degrees.
The folded plates 2 are welded in sequence.
The flaps 2 are integrally formed.
Still open on the lower flange board 7 has fixed orifices 6, still sets up vertical twisted steel 5 in the folded plate 2, and twisted steel 5 passes fixed orifices 6 and fixes web 1 and concrete slab drawknot.
The lower flange plate 7 is 30 mm-60 mm larger than the four sides of the upper flange plate 3.
The bolt connection folded plate type shear connector greatly increases the shear rigidity of the connector (compared with a stud), and the folded plate type web structure has good deformability while increasing the rigidity; the shear connector has no strong and weak axis, and compared with the traditional rigid connector and flexible connector, the shear connector belongs to semi-rigid connection, has obvious stiffness property and better deformability, and greatly improves the bearing capacity. The number of connectors is significantly reduced in the same shear span section compared to the most common studded connectors, which results in improved field assembly efficiency. For different construction design requirements, the equal interval arrangement in a certain range can be carried out according to the difference of specific bearing capacity, and the integral strength of the structure is easily improved. For the shear connector formed by welding, the welding seam can enable the folded plate part to be combined more tightly, the web plate is provided with an opening and penetrates through the steel bar, so that the integral bonding degree is higher, the bearing capacity is improved, the deformation capacity is increased, and the rigidity and the integral stability are greatly improved. And the rigidity of the shearing resistant part can be adjusted by opening holes, so that the requirements of different degrees can be met.
The utility model discloses bolted connection folded plate formula shear connector, in order to improve its rigidity and wholeness, can carry out welded connection with the folded plate in the web, if reduce rigidity only need with the web portion fall into certain angle concatenation form can. In this way, different stiffness requirements for different structures can be met.
Claims (5)
1. The bolted folded plate type shear connector is characterized by comprising a web plate (1), wherein the web plate (1) is formed by sequentially connecting a plurality of folded plates (2), the folded plates (2) are in a wave-shaped folded shape, each folded plate (2) is provided with a long circular hole (4), the long circular holes (4) are arranged at equal intervals, a central connecting line is positioned on a straight line, the central connecting line is vertical to the long axis of each long circular hole (4), two opposite side edges of the web plate (1) are respectively connected with an upper flange plate (3) and a lower flange plate (7), the upper flange plate (3) plays a role in resisting pulling, the lower flange plate (7) plays a role in connecting, the upper flange plate (3) and the lower flange plate (7) are parallel to each other and are vertical to the web plate (1), and the upper flange plate (3) and the lower flange plate (7) are vertical to the long axis of each long circular hole (4); two adjacent folded plates (2) in the web (1) form a V-shaped structure, and the opening angle of the V-shaped structure formed by the two adjacent folded plates (2) is 60-120 degrees.
2. The bolted flap shear connector of claim 1, wherein a plurality of said flaps (2) are welded in sequence.
3. A bolted flap shear connector according to claim 1, wherein several of the flaps (2) are integrally formed.
4. The bolted folded plate type shear connector of claim 1, wherein the lower flange plate (7) is further provided with a fixing hole (6), a vertical twisted steel (5) is further arranged in the folded plate (2), and the twisted steel (5) passes through the fixing hole (6) to fixedly tie the web plate (1) and the concrete slab.
5. The bolted flap shear connector of claim 1, wherein the lower flange plate (7) is 30-60 mm larger than the four sides of the upper flange plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920012636.6U CN209837305U (en) | 2019-01-04 | 2019-01-04 | Bolt connection folded plate type shear connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920012636.6U CN209837305U (en) | 2019-01-04 | 2019-01-04 | Bolt connection folded plate type shear connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209837305U true CN209837305U (en) | 2019-12-24 |
Family
ID=68901118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920012636.6U Expired - Fee Related CN209837305U (en) | 2019-01-04 | 2019-01-04 | Bolt connection folded plate type shear connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209837305U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112629407A (en) * | 2020-11-24 | 2021-04-09 | 西安理工大学 | Deformed steel bar size measuring method based on image analysis |
-
2019
- 2019-01-04 CN CN201920012636.6U patent/CN209837305U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112629407A (en) * | 2020-11-24 | 2021-04-09 | 西安理工大学 | Deformed steel bar size measuring method based on image analysis |
| CN112629407B (en) * | 2020-11-24 | 2024-03-22 | 西安理工大学 | Deformed steel bar dimension measuring method based on image analysis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191224 Termination date: 20210104 |