CN218059888U - Anti-loosening and anti-shearing connecting piece of detachable steel-concrete composite beam - Google Patents
Anti-loosening and anti-shearing connecting piece of detachable steel-concrete composite beam Download PDFInfo
- Publication number
- CN218059888U CN218059888U CN202221150917.6U CN202221150917U CN218059888U CN 218059888 U CN218059888 U CN 218059888U CN 202221150917 U CN202221150917 U CN 202221150917U CN 218059888 U CN218059888 U CN 218059888U
- Authority
- CN
- China
- Prior art keywords
- wedge
- bolt
- steel
- shaped
- nut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a shear connector of a looseness-proof detachable reinforced concrete composite beam, which comprises a concrete slab, a steel beam and a bolt; the bolt is embedded in the concrete slab, meanwhile, the upper portion of the cone nut is embedded in the concrete slab, the lower portion of the cone nut is tightly connected with a circular truncated cone-shaped opening drilled on the flange of the steel beam, a wedge-shaped gasket is arranged below the circular truncated cone-shaped opening, the lead angle theta of the wedge-shaped gasket is larger than the lead angle lambda of a screw thread, the diameter of the opening below the circular truncated cone-shaped opening is larger than the diameter of the bolt, the wedge-shaped gasket is formed by combining two circular gaskets with uniformly distributed spiral threads on the surfaces, and the surfaces of the spiral threads of the two circular gaskets are matched and tightly connected. The utility model discloses can effectively guarantee the connection requirement of steel-concrete composite beam, have fine locking effect and detachability again.
Description
Technical Field
The utility model relates to a reinforced concrete composite beam technical field specifically is a locking shearing connector who can dismantle reinforced concrete composite beam that moves.
Background
At present, the precast concrete plate and the steel beam are connected together by the shear connector, namely a bolt, to bear force and work cooperatively, and the combined beam bridge structure can better exert the advantages of the compression resistance of concrete, the tensile resistance of steel and the like. The combined structure can be connected together, and the most critical element is the shear connector of the bolt. When the steel-concrete composite beam bridge works, the generated vibration can loosen the bolts and the nuts, so that the problem of connection failure of the shear connector occurs, and a series of major accidents are caused.
China is in a large-scale urbanization construction stage, and building wastes generated by the update and demolition of old buildings in cities become important problems of environmental protection and sustainable development, wherein the old buildings comprise a large amount of steel-concrete composite structures. The detachable combined structure is convenient and fast to detach, is favorable for secondary utilization, accords with the energy-saving concept of 'green and environment-friendly' in China, and is the development direction of the future building industry.
In view of the above, the problem to be solved in the art is to research a shear connector of a detachable anti-loosening steel-concrete composite beam.
Disclosure of Invention
The utility model aims at overcoming the not enough of prior art, provide a locking shearing connector who can dismantle steel-concrete composite beam bridge that moves.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the shear connector of the anti-loosening detachable steel-concrete composite beam comprises a concrete plate, a steel beam and bolts, wherein the bolts are embedded in the concrete plate, and meanwhile, the upper parts of conical nuts are embedded in the concrete plate; the lower part of the conical nut is tightly connected with a circular truncated cone-shaped opening drilled on the flange of the steel beam; a wedge-shaped gasket is arranged below the circular truncated cone-shaped opening; the wedge-shaped gasket is screwed by the nut to apply pretightening force so that the wedge-shaped gasket is fixed on the bottom wall of the steel beam flange.
Preferably, the cone nut, the wedge-shaped washer and the nut are sequentially connected with the bolt from top to bottom through bolt threads.
Preferably, the diameter of the opening below the circular truncated cone-shaped opening is larger than that of the bolt, so that the bolt is prevented from directly contacting with the wall of the opening.
Preferably, the wedge-shaped gasket is formed by combining two circular gaskets with uniformly distributed spiral threads on the surfaces, and the spiral threads of the two circular gaskets are matched and tightly connected in surface shape.
Preferably, the wedge washer lead angle θ is greater than the screw lead angle λ.
The utility model provides a locking shearing connector who dismantles steel-concrete composite beam that moves. The method has the following beneficial effects:
(1) The wedge washer generates a wedge effect above the nut, can prevent the bolt and the nut from loosening in a rotating mode, does not depend on friction force, is not influenced by surface lubrication, and is simple to use and obvious in effect.
(2) When the nut is loosened, the locking force can be increased due to the wedge-shaped angle, but the locking force is quickly reduced after the limit is exceeded, and the detachability is good.
(3) The shear connector can be prefabricated in a factory, the construction speed is high, the occupied space is small, the member quality is high, and the construction process is green and environment-friendly.
Drawings
FIG. 1 is a three-dimensional exploded view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a detail view of the opening of the cone nut and the steel beam;
FIG. 4 is a detail view of the wedge washer lead angle;
FIG. 5 is a detail view of the screw flight;
FIG. 6 is an elevational view of the wedge washer;
in the figure: 1-concrete slab, 2-steel beam, 3-bolt, 4-taper nut, 5-truncated cone-shaped opening, 6-wedge-shaped washer and 7-nut.
Detailed Description
The following will clearly and completely describe the installation and use method of the present invention with reference to the attached drawings in the embodiments of the present invention.
As shown in the attached drawings, the shear connector of the anti-loosening detachable reinforced concrete composite beam bridge described by the utility model comprises a concrete plate, a steel beam and bolts, wherein the bolts are embedded in the concrete plate, and the upper part of a conical nut is embedded in the concrete plate; the lower part of the conical nut is tightly connected with a circular truncated cone-shaped opening drilled on the flange of the steel beam; a wedge-shaped gasket is arranged below the circular truncated cone-shaped opening; the wedge-shaped gasket is screwed by the nut to apply pretightening force so that the wedge-shaped gasket is fixed on the bottom wall of the steel beam flange.
The cone nut, the wedge-shaped washer and the nut are sequentially connected with the bolt from top to bottom through the bolt threads.
The diameter of the opening below the circular truncated cone-shaped opening is larger than that of the bolt, so that the bolt is prevented from directly contacting with the wall of the opening.
The wedge-shaped gasket is formed by combining two circular gaskets with uniformly distributed spiral threads on the surfaces, and the spiral threads of the two circular gaskets are matched and tightly connected in shape.
The wedge washer lead angle theta is greater than the screw lead angle lambda.
The utility model discloses specific embodiment's use as follows:
the bolt holes are reserved on the flange by using standardized steel section beams, meanwhile, when the concrete slab is prefabricated in a factory, the embedded bolts and the embedded conical nuts are partially embedded, and the two processes require the factory to achieve accurate positioning. The components are transported to the site to be assembled after being manufactured, the bolts and the steel beam holes are assembled in a one-to-one correspondence mode, the cone nuts are tightly attached to the circular truncated cone-shaped holes drilled in the upper flange of the steel beam, the initial area of a shearing interface is increased to reduce stress, and the steel beam holes are protected. The diameter of the opening below the circular truncated cone-shaped opening is larger than that of the bolt, so that the bolt is prevented from directly contacting with the wall of the opening hole, and the problem of difficulty in disassembly caused by overlarge stress deformation is solved. The wedge-shaped gasket below the circular truncated cone-shaped opening is screwed through the nut to apply pretightening force to enable the wedge-shaped gasket to be fixed on the bottom wall of the steel beam flange. When the transverse vibration is generated, the nut starts to rotate, and because the lead angle theta of the wedge-shaped washer is larger than the lead angle lambda of the screw thread, when the wedge-shaped washer rotates at the same angle as the nut, the axial displacement of the wedge-shaped washer is larger than the axial displacement of the nut, so that the wedge-shaped washer generates a wedge-shaped effect below the bolt, the nut can be prevented from rotating and loosening, and the locking is realized according to a geometric principle. When dismantling, unscrew the nut, because the wedge angle can lead to the locking force to increase, nevertheless descend fast after exceeding the limit, the nut surface can produce the indentation, only needs at this moment to unscrew the nut and can accomplish the separation of concrete slab and girder steel.
Claims (5)
1. The utility model provides a locking shear connector who dismantles steel-concrete composite beam that moves, includes concrete slab (1), girder steel (2), bolt (3), its characterized in that: bolts (3) are embedded in the concrete slab (1), and meanwhile, the upper part of the conical nut (4) is embedded in the concrete slab (1); the lower part of the conical nut (4) is tightly connected with a circular truncated cone-shaped opening (5) drilled on the flange of the steel beam (2); a wedge-shaped gasket (6) is arranged below the circular truncated cone-shaped opening (5); the wedge-shaped gasket (6) is screwed by the nut (7) to apply pretightening force so that the wedge-shaped gasket (6) is fixed on the bottom wall of the flange of the steel beam (2).
2. The shear connector of the anti-loosening detachable steel-concrete composite beam as claimed in claim 1, wherein the taper nut (4), the wedge washer (6) and the nut (7) are sequentially connected with the bolt (3) from top to bottom through bolt threads.
3. The shear connector for the anti-loosening detachable steel-concrete composite beam as claimed in claim 1, wherein the diameter of the opening below the circular truncated cone-shaped opening (5) is larger than that of the bolt (3), so that the bolt (3) is prevented from directly contacting the wall of the opening.
4. The shear connector for anti-loosening detachable steel-concrete composite beams according to claim 1, wherein the wedge-shaped washers (6) are combined by two round washers with uniformly distributed spiral threads on the surfaces, and the spiral threads of the two round washers are matched and tightly connected in shape.
5. The shear connector for a locking removable steel-concrete composite beam according to claim 1, wherein the lead angle θ of the wedge washer (6) is greater than the lead angle λ of the bolt (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221150917.6U CN218059888U (en) | 2022-05-14 | 2022-05-14 | Anti-loosening and anti-shearing connecting piece of detachable steel-concrete composite beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221150917.6U CN218059888U (en) | 2022-05-14 | 2022-05-14 | Anti-loosening and anti-shearing connecting piece of detachable steel-concrete composite beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218059888U true CN218059888U (en) | 2022-12-16 |
Family
ID=84431044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221150917.6U Active CN218059888U (en) | 2022-05-14 | 2022-05-14 | Anti-loosening and anti-shearing connecting piece of detachable steel-concrete composite beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218059888U (en) |
-
2022
- 2022-05-14 CN CN202221150917.6U patent/CN218059888U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211114418U (en) | Main material damage-free detachable steel-concrete combined beam | |
| CN104032840A (en) | Prestress assembly type frame joint connecting structure with additionally-arranged steel angles and construction method of prestress assembly type frame joint connecting structure | |
| CN109024900A (en) | A kind of detachable assembling type steel construction combination bean column node | |
| CN110593485A (en) | Main material damage-free detachable steel-concrete combined beam | |
| CN103422512A (en) | Replaceable embedded bolt type wind generation set concrete foundation and construction method thereof | |
| CN113863492A (en) | Fabricated concrete beam-column self-resetting node based on friction steel plate connection and assembling method | |
| CN210887565U (en) | Assembled bolted connection roof beam-post node | |
| CN218059888U (en) | Anti-loosening and anti-shearing connecting piece of detachable steel-concrete composite beam | |
| CN114960400A (en) | Anti-loosening and anti-shearing connecting piece of detachable steel-concrete composite beam | |
| CN111851737A (en) | Assembled concrete frame beam column trunk type connecting joint | |
| CN101906782B (en) | Positioning and anchoring structure of foundation bolt in concrete foundation | |
| CN215406919U (en) | Completely-assembled steel-concrete beam | |
| CN107514097B (en) | Prestressed corrugated pipe assembly and installation and construction method thereof | |
| CN102251536B (en) | Vertical positioning connecting structure of base frame of tower mast type mechanical equipment | |
| CN112431436B (en) | Anti-punching reinforcement construction method for flat slab | |
| CN201801882U (en) | Positioning and anchoring construction of foundation bolt in foundation concrete | |
| CN212866372U (en) | Extension node of prefabricated solid concrete filled steel tube member | |
| CN210086553U (en) | Dry-type connected precast concrete wall and foundation connection node | |
| CN210128008U (en) | Bolt shear connector with weakened section | |
| CN209011316U (en) | A kind of novel fabricated primary and secondary beam connecting node | |
| CN211447423U (en) | Novel connecting piece for steel beam and composite floor slab | |
| CN109736184B (en) | Connecting piece for girder and abutment of corrugated steel web combined bridge and mounting method of connecting piece | |
| CN102108714B (en) | Vertical locating and connecting structure of tower-type mechanical equipment underframe | |
| CN215567113U (en) | Shear part of spiral spring bolt | |
| CN216044872U (en) | Taper sleeve nut assembly and connecting structure of taper sleeve nut assembly and bolt connecting piece |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |