CN216947805U - Wide ladder-shaped cap-shaped connecting device - Google Patents
Wide ladder-shaped cap-shaped connecting device Download PDFInfo
- Publication number
- CN216947805U CN216947805U CN202121375480.1U CN202121375480U CN216947805U CN 216947805 U CN216947805 U CN 216947805U CN 202121375480 U CN202121375480 U CN 202121375480U CN 216947805 U CN216947805 U CN 216947805U
- Authority
- CN
- China
- Prior art keywords
- connecting plate
- steel
- hole
- plate
- concrete
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Joining Of Building Structures In Genera (AREA)
Abstract
The utility model discloses a wide trapezoidal cap-shaped connecting device, which comprises a connecting plate and a reinforcing steel bar, wherein the connecting plate is made of a steel plate, the cross section of the connecting plate is in an isosceles trapezoid shape, an inner groove is arranged in the connecting plate, and the connecting plate is provided with a hole part communicated with the inner groove; the trompil portion includes rectangular hole and oval hole, the both ends of rectangular hole communicate with oval hole respectively, the rectangular hole is located the top of connecting plate, oval hole is located the lateral wall of connecting plate, the reinforcing bar runs through in two corresponding oval holes. This connecting device adopts the isosceles trapezoid connecting plate that the steel sheet was made, increases the area of contact of connecting plate and concrete, but the back-off welding is on the I-shaped steel roof beam, and the connecting plate is equipped with trompil portion, and trompil portion is equipped with the horizontal reinforcing bar that runs through with the connecting plate, and the connecting plate forms the concrete tenon of bigger volume, the anti bearing capacity of shearing of very big promotion connecting plate.
Description
Technical Field
The utility model relates to the technical field of bridge structures, in particular to a wide trapezoidal cap-shaped connecting device.
Background
In recent years, as the traditional building industry is gradually promoted to develop towards green, high-efficiency and modernization, the assembly type building is popularized on a large scale, and the steel-concrete composite structure with excellent mechanical property is developed and applied rapidly. The most critical problem in the steel-concrete composite structure is the connection between the steel beam and the concrete slab, and among the existing composite beam shear connectors, the open-cell steel plate connector is one of the main types.
The steel plate connecting piece with the holes is used for forming the holes in the proper positions of the steel plates, the steel bars penetrate through the holes, and the concrete tenons are formed in the poured concrete inlet holes, so that acting force between the steel beams and the concrete slabs is borne by the steel bars and the concrete tenons, huge axial force and bending moment loads on the steel cross sections can be well distributed to the concrete through the connecting piece, the stress of the steel structure is well dispersed, the performance of a joint part is well improved, and the steel plate connecting piece has large development space and potential.
The traditional perforated steel plate connecting piece is composed of a straight steel plate, the stress action is exerted by means of friction bonding of the steel plate and concrete and a concrete tenon, although the pulling resistance and the shearing resistance of the connecting piece are increased by introducing different structures into a plurality of subsequent improved perforated steel plate connecting pieces, the connecting pieces belong to open sections, the potential of the connecting piece can be further developed, and the following problems generally exist in the existing connecting piece: 1. the shearing resistance and the integral bearing capacity are poor, the construction of penetrating steel bars is inconvenient, and the shearing resistance and the bearing capacity are improved to a limited extent; 2. the flange hinders the concrete from vibrating and has poor ductility.
SUMMERY OF THE UTILITY MODEL
In view of the technical problems in the prior art, the utility model aims to provide a wide ladder-cap-shaped connecting device. The connecting device increases the contact area with concrete and improves the shearing resistance and bearing capacity of the connecting device.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a wide ladder cap-shaped connecting device comprises a connecting plate and a reinforcing steel bar, wherein the connecting plate is made of a steel plate, the cross section of the connecting plate is in an isosceles trapezoid shape, an inner groove is formed in the connecting plate, and the connecting plate is provided with a hole opening part communicated with the inner groove; the trompil portion includes rectangular hole and elliptical hole, the both ends of rectangular hole communicate with elliptical hole respectively, the rectangular hole is located the top of connecting plate, the elliptical hole is located the lateral wall of connecting plate, the reinforcing bar runs through in two corresponding elliptical holes.
Preferably, the wide ladder hat-shaped connecting device further comprises an I-shaped steel beam, and the lower end of the connecting plate is welded with the flange plate of the I-shaped steel beam.
Preferably, the wide trapezoidal cap-shaped connecting device further comprises a binding wire, and the steel bar is fixedly connected with the connecting plate through the binding wire.
Preferably, the width of the rectangular hole is 1-2 cm larger than the diameter of the steel bar.
Preferably, the inclined edge of the connecting plate forms an included angle of 55-65 degrees with the horizontal axis.
Preferably, the reinforcing steel bar is a ribbed reinforcing steel bar.
Preferably, the wide trapezoidal cap-shaped connecting device further comprises UHPC blocks, and the UHPC blocks are bonded with the connecting plate and the reinforcing steel bars.
According to the manufacturing method of the wide ladder hat-shaped connecting device, the steel plate is reserved with the hole forming positioning lines, holes are reserved according to the positioning lines, the cut steel plate is punched and bent into the isosceles trapezoid shape to form the connecting plate, the lower end of the connecting plate is welded with the flange plate of the I-shaped steel beam, the steel bar is fixed to the connecting plate through the binding wire, and UHPC is poured to complete manufacturing of the wide ladder hat-shaped connecting device.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
1. the wide trapezoidal cap-shaped connecting device adopts the isosceles trapezoidal connecting plates made of steel plates, the contact area between the connecting plates and concrete is increased, the connecting plates can be welded on an I-shaped steel beam in a back-off mode, the connecting plates are provided with the hole parts, the hole parts are provided with the transverse reinforcing steel bars penetrating through the connecting plates, the connecting plates form concrete tenons with larger volumes, and the shearing bearing capacity of the connecting plates is greatly improved.
2. According to the wide ladder hat-shaped connecting device, the connecting plate of the connecting device is welded with the I-shaped steel beam to form a closed section, the isosceles ladder type design is adopted, and the closed section formed by welding the connecting plate and the I-shaped steel beam enables the connecting plate to have higher rigidity, so that the overall stress performance of the connecting plate can be improved.
3. According to the wide trapezoidal cap-shaped connecting device, the rectangular hole and the elliptical hole of the connecting plate of the connecting device enable the reinforcing steel bars to have a certain moving space along the shearing direction, vibration during concrete pouring is facilitated, the shearing action of the reinforcing steel bars is ensured, and the ductility of the connecting plate is improved.
4. According to the wide trapezoidal cap-shaped connecting device, the isosceles trapezoid steel plate and the UHPC block of the connecting device are used together, and under the combined action of the strong rigidity of the isosceles trapezoid steel plate and the excellent compressive strength of the UHPC, the shearing resistance and the pulling resistance of the connecting device can be fully exerted.
Drawings
Fig. 1 is a first schematic view of a wide ladder hat connection of the present invention.
Fig. 2 is a second schematic view of a wide ladder cap connector of the present invention.
FIG. 3 is a schematic view of the web opening of a wide ladder hat attachment of the present invention.
Fig. 4 is a side view of a wide ladder cap connector of the present invention.
Wherein, 1 is the connecting plate, 11 is the trompil portion, and 111 is oval hole, and 112 is the rectangular hole, 2 is the reinforcing bar, and 3 is the UHPC piece, and 4 is the I-steel roof beam, 41 is the flange board, and R is the contained angle of hypotenuse and horizontal axis.
Detailed Description
The following describes the object of the present invention in further detail with reference to the drawings and specific examples, which are not repeated herein, but the embodiments of the present invention are not limited to the following examples.
As shown in fig. 1 to 4, a wide ladder-cap-shaped connecting device comprises a connecting plate 1 and a reinforcing steel bar 2, wherein the connecting plate 1 is made of steel plates, the cross section of the connecting plate 1 is in an isosceles trapezoid shape, an inner groove is formed in the connecting plate 1 and used for pouring concrete, the cross section of the connecting plate 1 is in an isosceles trapezoid shape and meets the maximum volume of the poured concrete, and the connecting plate 1 is provided with a hole part 11 communicated with the inner groove; trompil portion 11 includes rectangular hole 112 and elliptical hole 111, the both ends of rectangular hole 112 communicate with elliptical hole 111 respectively, and elliptical hole 111 is used for placing reinforcing bar 2 or ligature reinforcing bar 2, and rectangular hole 112 and elliptical hole 111 structure make reinforcing bar 2 have certain activity space along the shear force direction, and the vibration when also being convenient for pour concrete has both ensured reinforcing bar 2's shearing effect, has promoted the ductility of connecting plate 1 again. Rectangular hole 112 makes the concrete can flow into the inside groove as the upwards opening of inside groove, adopts the vibrting spear to vibrate the concrete, makes the concrete of inside groove more durable, rectangular hole 112 is located the top of connecting plate 1, oval hole 111 is located the lateral wall of connecting plate 1, reinforcing bar 2 runs through in two corresponding oval holes 111. The isosceles trapezoid-shaped connecting plate 1 is formed by punching in a hole forming mode, can be welded on the I-shaped steel beam 4 in a back-off mode, the transverse steel bars 2 can be arranged on the hole forming portion 11, and the concrete tenon formed by matching can well improve the shearing resistance and pulling resistance bearing capacity of the connecting device.
The connecting device further comprises an I-shaped steel beam 4, the lower end of the connecting plate 1 is welded with a flange plate 41 of the I-shaped steel beam 4, the flange plate 41 of the I-shaped steel beam 4 is welded with the connecting plate 1, the I-shaped steel beam 4 can be replaced by a steel box girder and a steel truss girder, a closed cross section is formed after the connecting plate 1 is welded with the I-shaped steel beam 4, the shear rigidity of the connecting device is enhanced, an isosceles trapezoid design is adopted, the contact area of the connecting plate 1 and concrete is increased, the connecting plate 1 is enabled to form a concrete tenon with a larger volume, and the shear resistance of the connecting plate 1 is greatly improved.
The connecting device further comprises a binding wire, and the steel bar 2 is fixedly connected with the connecting plate 1 through the binding wire. Prick the silk and be fixed in trompil portion 11 with reinforcing bar 2, when the concrete is pour in the inside groove, adopt to prick the silk and can avoid the vibrting spear concrete that vibrates can not shift reinforcing bar 2 vibration, make reinforcing bar 2 and connecting plate 1's overall structure more stable.
The width of the rectangular hole 112 is 1-2 cm larger than the diameter of the reinforcing steel bar 2. Be convenient for constructor places reinforcing bar 2 for the construction progress can also let the rubble of concrete enter into the inside groove simultaneously, makes the concrete intensity of inside groove and the outer concrete intensity of inside groove keep unanimous, increases connecting device's compressive strength.
The included angle R between the inclined edge of the connecting plate 1 and the horizontal axis is 55-65 degrees. In the embodiment, the included angle R between the inclined edge of the connecting plate 1 and the horizontal axis is 60 degrees, and 60 degrees are adopted to enable the inner groove of the connecting plate 1 to be filled with more concrete, so that the periphery of the cross section of the connecting plate 1 is more uniform, and the transverse pressure resistance of the connecting plate 1 is improved.
The reinforcing steel bar 2 is a ribbed reinforcing steel bar 2. The ribbed steel bar 2 can increase the friction force between the steel bar 2 and the concrete, and after the concrete is poured on the connecting plate 1, the transverse shear resistance of the connecting plate 1 is enhanced.
The connecting device also comprises a UHPC (ultra high performance concrete) block 3, the UHPC can be an engineering material with the best durability, the mechanical property of the UHPC with proper reinforcement is close to that of a rigid structure, and meanwhile, the UHPC has excellent wear-resisting and anti-explosion properties, so that the UHPC is particularly suitable for being used for large-span bridges, anti-explosion structures and thin-wall structures, and the UHPC is bonded with the connecting plate 1 and the reinforcing steel bars. The strong rigidity of the isosceles trapezoid steel plate and the excellent compressive strength of the UHPC are combined, so that the shearing resistance and the pulling resistance of the connecting plate 1 can be fully exerted.
A manufacturing method based on the wide trapezoidal cap-shaped connecting device is characterized in that an opening positioning line is reserved in a steel plate, a hole is cut according to the positioning line, the cut steel plate is punched and bent into an isosceles trapezoid to form a connecting plate 1, the lower end of the connecting plate 1 is welded with a flange plate 41 of an I-shaped steel beam 4, a steel bar 2 is fixed to the connecting plate 1 through a binding wire, and UHPC is poured to complete manufacturing of the concrete tenon.
The manufacturing method of the connecting device is simple, the connecting plate 1 and the I-shaped steel beam 4 are welded conveniently and flexibly mounted on a construction site, the connecting device is convenient to process on the construction site, prefabrication and customization are not needed, the construction progress is accelerated, and the manufacturing cost is saved.
The above-mentioned embodiments are preferred embodiments of the present invention, and the present invention is not limited thereto, and any other modifications or equivalent substitutions that do not depart from the technical spirit of the present invention are included in the scope of the present invention.
Claims (7)
1. The utility model provides a wide trapezoidal cap shape connecting device which characterized in that: the steel plate connecting structure comprises a connecting plate and a steel bar, wherein the connecting plate is made of a steel plate, the cross section of the connecting plate is in an isosceles trapezoid shape, an inner groove is formed in the connecting plate, and the connecting plate is provided with a hole part communicated with the inner groove; the trompil portion includes rectangular hole and elliptical hole, the both ends of rectangular hole communicate with elliptical hole respectively, the rectangular hole is located the top of connecting plate, the elliptical hole is located the lateral wall of connecting plate, the reinforcing bar runs through in two corresponding elliptical holes.
2. The wide ladder cap connection device of claim 1, wherein: the lower end of the connecting plate is welded with a flange plate of the I-shaped steel beam.
3. The wide ladder cap connection device of claim 1, wherein: the steel bar fixing device further comprises a binding wire, and the steel bar is fixedly connected with the connecting plate through the binding wire.
4. The wide ladder cap connection of claim 1, wherein: the width of the rectangular hole is 1-2 cm larger than the diameter of the reinforcing steel bar.
5. The wide ladder cap connection of claim 1, wherein: the inclined edge of the connecting plate forms an included angle of 55-65 degrees with the horizontal axis.
6. The wide ladder cap connection device of claim 1, wherein: the reinforcing steel bar is a ribbed reinforcing steel bar.
7. The wide ladder cap connection of claim 1, wherein: still include UHPC piece, UHPC piece all bonds with connecting plate and reinforcing bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121375480.1U CN216947805U (en) | 2021-06-21 | 2021-06-21 | Wide ladder-shaped cap-shaped connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121375480.1U CN216947805U (en) | 2021-06-21 | 2021-06-21 | Wide ladder-shaped cap-shaped connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216947805U true CN216947805U (en) | 2022-07-12 |
Family
ID=82288965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121375480.1U Active CN216947805U (en) | 2021-06-21 | 2021-06-21 | Wide ladder-shaped cap-shaped connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216947805U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113322785A (en) * | 2021-06-21 | 2021-08-31 | 华南理工大学 | Wide ladder-shaped cap-shaped connecting device and manufacturing method |
-
2021
- 2021-06-21 CN CN202121375480.1U patent/CN216947805U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113322785A (en) * | 2021-06-21 | 2021-08-31 | 华南理工大学 | Wide ladder-shaped cap-shaped connecting device and manufacturing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105803925A (en) | Quick connection method for prefabricated steel pipe constraint type steel concrete pier columns and cover beam | |
| CN109610313B (en) | Longitudinal rib staggered arrangement structure of profile steel-UHPC composite board and construction method thereof | |
| CN111424546A (en) | Inverted T-shaped steel beam-concrete combined beam structure of small and medium-span bridge and construction method | |
| CN216947805U (en) | Wide ladder-shaped cap-shaped connecting device | |
| CN108193607A (en) | Fabricated prestressed truss for reinforcement and construction method thereof | |
| CN212773147U (en) | Prefabricated assembly part outsourcing honeycomb steel-concrete combination beam | |
| CN102776829A (en) | Steel pipe concrete combined truss bridge | |
| CN113216017A (en) | Steel-encased ultrahigh-performance concrete reinforcing method for box girder | |
| CN113322785A (en) | Wide ladder-shaped cap-shaped connecting device and manufacturing method | |
| CN100465377C (en) | Baseboard cable horizontal arrangement prestress concrete variable cross-section box girder bridge and construction method thereof | |
| CN110185180B (en) | Partially prefabricated honeycomb type steel concrete beam-plate structure system | |
| CN209891551U (en) | Combined beam composed of steel beam and steel bar truss floor support plate | |
| CN202730632U (en) | Steel pipe and concrete combined truss bridge | |
| CN216338993U (en) | Longitudinal joint for steel-UHPC (ultra high performance concrete) assembled pi-shaped combination beam | |
| CN217651599U (en) | Connecting device for multi-corner bent steel plate | |
| CN215106427U (en) | Hollow superimposed sheet of enhancement steel pipe truss prestressing force | |
| CN210439720U (en) | Reinforced structure for increasing cross section of concrete beam side | |
| CN210134320U (en) | Corrugated steel web prestress UHPC combined box girder | |
| CN112746553A (en) | Joint structure of integral abutment and steel beam | |
| CN113293692A (en) | Connecting device and manufacturing method of multi-corner bent steel plate | |
| CN208733810U (en) | A kind of assembled overlapping beam and slab construction | |
| CN112922233A (en) | Reinforced concrete prefabricated column and construction method thereof | |
| CN105421213B (en) | Construction method for main span structure of rigid frame bridge | |
| CN220521082U (en) | Corrugated pipe connecting structure for joint of precast concrete bridge deck of steel-concrete composite girder bridge | |
| CN214573273U (en) | Joint structure of integral abutment and steel beam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |