CN112726965A - Detachable assembly type prefabricated floor slab steel bar connecting device, structure and method - Google Patents
Detachable assembly type prefabricated floor slab steel bar connecting device, structure and method Download PDFInfo
- Publication number
- CN112726965A CN112726965A CN202011630116.5A CN202011630116A CN112726965A CN 112726965 A CN112726965 A CN 112726965A CN 202011630116 A CN202011630116 A CN 202011630116A CN 112726965 A CN112726965 A CN 112726965A
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- cover plate
- upper cover
- lower cover
- floor slab
- steel bar
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a detachable assembly type prefabricated floor slab steel bar connecting device, a detachable assembly type prefabricated floor slab steel bar connecting structure and a detachable assembly type prefabricated floor slab steel bar connecting method, wherein the detachable assembly type prefabricated floor slab steel bar connecting device comprises an upper cover plate, a lower cover plate and a connecting piece; the upper cover plate bottom surface and the lower cover plate top surface are planes, the upper cover plate bottom surface and the lower cover plate top surface are provided with through grooves, a plurality of protruding structures are arranged in the through grooves, and after the upper cover plate bottom surface and the lower cover plate top surface are buckled, the upper cover plate and the lower cover plate are connected and fixed through connecting pieces. The stability and the reliability of the connecting device are guaranteed, the stress and the force transmission performance of the steel bars are fully exerted, the steel bars at the splicing part are well protected, and the corrosion and the damage of the steel bars are avoided.
Description
Technical Field
The invention belongs to the field of civil and architectural engineering, and relates to a detachable assembly type prefabricated floor slab steel bar connecting device, a detachable assembly type prefabricated floor slab steel bar connecting structure and a detachable assembly type prefabricated floor slab steel bar connecting method.
Background
With the continuous development of building industrialization and industrialization, the application of the fabricated structure gradually becomes the trend in the field of building construction. The traditional cast-in-place floor slab has better overall performance, but does not accord with the trend of industrial development of buildings, and the prior common prefabricated assembled floor slab has a large amount of overhanging steel bar joints. The working procedure of the steel bar joint is the link with the lowest efficiency and the lowest industrial degree in the construction of a reinforced concrete structure; meanwhile, the quality of the steel bar joint is a key factor for determining the safety of a building. At present, the mechanical connection is applied to realize the connection of the steel bar joints, and the mechanical connection technology of the thick steel bars popularized and applied in China mainly comprises the following steps: sleeve extrusion connection technology, taper thread connection technology, straight thread connection technology and ribbed steel bar molten metal filling joint connection. However, the existing mechanical connection has the problems of reinforcement area weakening and sleeve and base metal damage, the reinforcement must be treated in advance before use, but the end is easy to damage in the transportation and construction processes, and the quality of the joint is seriously influenced.
The connection problem of the small-diameter steel bars in floor slab splicing can not be solved only by the existing mechanical connection technology. The damage of the threaded connection technology to the parent metal is too large; the construction strength of the sleeve extrusion connection is high, and hydraulic oil of the equipment can pollute the reinforcing steel bars and is not easy to clean.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a detachable prefabricated floor slab steel bar connecting device, a detachable prefabricated floor slab steel bar connecting structure and a detachable prefabricated floor slab steel bar connecting method, so that the stability and the reliability of the connecting device are guaranteed, the stress and force transmission performance of the steel bars are fully exerted, the steel bars at splicing positions are well protected, and the corrosion and the damage of the steel bars are avoided.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a detachable assembly type prefabricated floor slab steel bar connecting device comprises an upper cover plate, a lower cover plate and a connecting piece;
the upper cover plate bottom surface and the lower cover plate top surface are planes, the upper cover plate bottom surface and the lower cover plate top surface are provided with through grooves, a plurality of protruding structures are arranged in the through grooves, and after the upper cover plate bottom surface and the lower cover plate top surface are buckled, the upper cover plate and the lower cover plate are connected and fixed through connecting pieces.
Preferably, the convex structure adopts coarse teeth.
Preferably, the upper cover plate and the lower cover plate are provided with a plurality of corresponding threaded holes, the connecting piece adopts a high-strength bolt, and the high-strength bolt is screwed into the threaded holes after the bottom surface of the upper cover plate and the top surface of the lower cover plate are buckled.
Preferably, the depth of the through groove of the upper cover plate and the lower cover plate is smaller than the radius of the steel bar.
A detachable prefabricated floor slab reinforced bar connection structure comprises at least two floor slabs; be provided with a plurality of reinforcements that display was arranged in the floor, the reinforcing bar is ribbed reinforcing bar, and two floor coplanarities and side concatenation, two floor reinforcing bar junctions are provided with the mounting groove, and the reinforcing bar stretches out from the mounting groove in, and the reinforcing bar junction parcel of two floors has above-mentioned arbitrary one prefabricated floor steel bar connection device of demountable assembly formula, it covers connecting device to be filled with the concrete in the mounting groove.
A detachable assembly type prefabricated floor slab steel bar connecting method based on the connecting structure is characterized by comprising the following steps;
splicing two floor slabs to make the two floor slabs in a same plane, and arranging an installation groove at the intersection of the steel bars of the two floor slabs;
step two, the upper cover plate and the lower cover plate are buckled and nested at the intersection of the steel bars of the two floor slabs;
fixing the upper cover plate and the lower cover plate by using a connecting piece;
and step four, backfilling the mounting groove with concrete.
Preferably, in the third step, the connecting piece adopts a high-strength bolt, and after the upper cover plate and the lower cover plate are buckled, the high-strength bolt is screwed into the threaded hole to fix the upper cover plate and the lower cover plate.
Compared with the prior art, the invention has the following beneficial effects:
the invention can be matched with the ribbed steel bar by arranging the bulge structure in the through groove of the connecting device, and the upper cover plate and the lower cover plate are connected through the connecting piece to finish the fastening and splicing of the steel bar. The protruding structure in the through groove can be meshed with the rib surface of the ribbed steel bar, so that the processing and damage to the connection end of the steel bar base metal are avoided; accomplish the reinforcing bar connecting device after the fastening concatenation, played fine guard action to the reinforcing bar of concatenation department, avoided the corrosion and the damage of reinforcing bar. The connecting device has very high bearing capacity and safe storage, has super strong adaptability to various construction conditions, high assembly degree and stable quality, can realize equal-strength connection of reinforcing steel bars, and plays a key role in the industrialized development of the prefabricated reinforced concrete structure.
Furthermore, the upper cover plate and the lower cover plate of the connecting device are connected through high-strength bolts, pretightening force can be applied to the steel bars by means of the high-strength bolts, and the friction force of the contact section between the inner surface of the connecting device and the outer surface of the steel bars is improved, so that the pulling force and the pressure between the steel bars are efficiently transmitted. And only need torque wrench or electronic torque wrench to screw high strength bolt to the design value in the assembly process, need not large-scale equipment, low in labor strength.
Furthermore, the depth of the through groove of the upper cover plate and the lower cover plate is smaller than the radius of the steel bar, so that a certain distance is still left between the upper cover plate and the lower cover plate after the upper cover plate and the lower cover plate are buckled on the steel bar, the upper cover plate and the lower cover plate are connected through the connecting piece and sufficient pretightening force is applied, the stability and the reliability of the connecting device are guaranteed, and the stress and force transmission performance of the steel bar are fully exerted.
According to the structure and the method, the connecting device is used for splicing the reinforcing steel bars between the floor slabs and covering the reinforcing steel bars through the concrete, the connecting device after fastening and splicing is completed, the reinforcing steel bars at the splicing positions are well protected, corrosion and damage of the reinforcing steel bars are avoided, the connecting device has very high bearing capacity and safety storage, prefabricated floor slab veneering splicing is realized, and the defects that a post-cast strip is easy to crack and poor in overall performance in the traditional splicing mode are overcome.
Drawings
Fig. 1 is a schematic structural view of a connecting device according to an embodiment of the present invention.
Fig. 2 is a top view of the connection device described in the examples of the present invention.
Fig. 3 is a cross-sectional view of a connecting device according to an embodiment of the present invention.
Fig. 4 is a schematic plan view of a splicing node of the precast floor slab of the present invention.
Fig. 5 is a schematic sectional view of a prefabricated floor slab splicing node according to the present invention.
In the figure: 1-high strength bolt; 2-upper cover plate; 3-lower cover plate; 4-reinforcing steel bars; 5-a first prefabricated floor slab; 6-second prefabricated floor slab; 7-mounting grooves; 8-positioning saddle.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, the detachable prefabricated floor slab reinforcing steel bar connecting device of the present invention includes an upper cover plate 2, a lower cover plate 3 and a connecting member.
2 bottom surfaces of upper cover plate and 3 top surfaces of apron down are the plane, and 2 bottom surfaces of upper cover plate and 3 top surfaces of apron down all are provided with logical groove, and after 2 bottom surfaces of upper cover plate and 3 top surfaces of apron down lock, upper cover plate 2 and apron 3 adopt the connecting piece to connect fixedly down.
As shown in fig. 2, the connecting member of this embodiment adopts high-strength bolt 1, and upper cover plate 2 and lower cover plate 3 all are provided with a plurality of corresponding screw holes, and the screw hole is located the both sides position that leads to the groove, and after 2 bottom surfaces of upper cover plate and 3 top surfaces of lower cover plate buckled, high-strength bolt 1 screwed in the screw hole, with upper cover plate 2 and lower cover plate 3 connection. By adopting the high-strength bolt 1, the high-strength bolt 1 can be screwed to a designed value only by a torque wrench or an electric torque wrench in the assembling process, large-scale equipment is not needed, and the labor intensity is low.
The through groove depth of the upper cover plate 2 and the lower cover plate 3 is smaller than the radius of the steel bar 4, so that as shown in fig. 1, a certain distance is reserved after the upper cover plate 2 and the lower cover plate 3 are buckled on the steel bar 4, the upper cover plate and the lower cover plate are connected through the high-strength bolt 1, the pretightening force can be applied to the steel bar 4 by means of the high-strength bolt 1, the friction force of the contact section between the inner surface of the connecting device and the outer surface of the steel bar 4 is improved, the tension and the pressure between the steel bars 4 are efficiently transmitted, the stability and the reliability of the connecting device are guaranteed.
As shown in fig. 3, the protruding structure of this embodiment adopts a thick tooth structure, the steel bar 4 adopts a ribbed steel bar, the thick tooth can be engaged with the rib surface of the ribbed steel bar, the processing and damage to the steel bar base material connection end are avoided, and the pulling force and the pressure between the steel bars 4 are efficiently transmitted. The junction of the two steel bars 4 is positioned at the central position of the connecting device, and a positioning saddle 8 is arranged between the end parts of the two steel bars 4.
This example is the steel reinforcement sleeve pipe mechanical connection device that upper cover plate 2, lower cover plate 3 and high-strength bolt 1 constitute, connects the condition of two joint department reinforcing bars 4, and two joint department reinforcing bars 4 are connected to steel reinforcement sleeve pipe mechanical connection device promptly, and high-strength bolt 1 exerts pretightning force fastening connection device to ensure joint department reinforcing bar 4 and connection device have sufficient joint strength, and the pretightning force only needs the torque wrench.
As shown in fig. 4, the detachable prefabricated floor slab reinforced bar connection structure of the present invention includes at least two floor slabs; be provided with a plurality of reinforcing bars 4 that display was arranged in the floor, including horizontal reinforcing bar and longitudinal reinforcement, reinforcing bar 4 is ribbed reinforcing bar, two floor coplanarities and side concatenation, and two 4 junctions of floor reinforcing bar are provided with mounting groove 7, and reinforcing bar 4 stretches out from mounting groove 7 in, and the 4 junctions parcel of reinforcing bar of two floors has connecting device, and mounting groove 7 is filled with the concrete and covers connecting device.
In specific implementation, the construction steps are as follows:
1. splicing a first prefabricated floor 5 and a second prefabricated floor 6, and arranging an installation groove 7 at the bottom of the first prefabricated floor and the second prefabricated floor;
2. the upper cover plate 2 and the lower cover plate 3 tap coarse teeth;
3. the upper cover plate 2 and the lower cover plate 3 are provided with paired bolt round holes;
4. the upper cover plate 2 is arranged above the splicing position of the steel bars 4, and the contact position of the ends of the steel bars 4 is positioned in the middle of the through groove.
5. The lower cover plate 3 is symmetrically arranged below the splicing position of the steel bars 4, and the steel bars 4 are in good contact with the through grooves.
6. The connecting pieces are assembled by high-strength bolts 1 through the paired bolt holes of the upper cover plate 2 and the lower cover plate 3.
7. And finishing the final screwing by using a torque wrench after all the high-strength bolts 1 are connected.
8. The mounting groove 7 is backfilled with concrete.
In conclusion, the detachable assembly type prefabricated floor slab steel bar connecting device overcomes the defects of high labor intensity, large damage of the base metal and the sleeve and unstable connecting quality of the existing steel bar 4 mechanical connection, does not need large-scale mechanical equipment on site, greatly reduces the labor intensity, has good connecting performance and high construction efficiency, and plays a key role in the industrialized development of prefabricated reinforced concrete structures.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (7)
1. A detachable assembly type prefabricated floor slab steel bar connecting device is characterized by comprising an upper cover plate (2), a lower cover plate (3) and a connecting piece;
the bottom surface of the upper cover plate (2) and the top surface of the lower cover plate (3) are planes, the bottom surface of the upper cover plate (2) and the top surface of the lower cover plate (3) are provided with through grooves, a plurality of protruding structures are arranged in the through grooves, and after the bottom surface of the upper cover plate (2) and the top surface of the lower cover plate (3) are buckled, the upper cover plate (2) and the lower cover plate (3) are connected and fixed through connecting pieces.
2. The prefabricated floor slab reinforcing bar connecting device of claim 1, wherein the convex structure is a coarse tooth.
3. The detachable prefabricated floor slab steel bar connecting device is characterized in that the upper cover plate (2) and the lower cover plate (3) are respectively provided with a plurality of corresponding threaded holes, the connecting piece adopts a high-strength bolt (1), and after the bottom surface of the upper cover plate (2) and the top surface of the lower cover plate (3) are buckled, the high-strength bolt (1) is screwed into the threaded holes.
4. The prefabricated floor slab reinforcement connection device of claim 1, wherein the channel depth of the upper cover plate (2) and the lower cover plate (3) is smaller than the radius of the reinforcement (4).
5. A detachable assembly type prefabricated floor slab steel bar connecting structure is characterized by comprising at least two floor slabs; the prefabricated floor slab steel bar connecting device is characterized in that a plurality of steel bars (4) which are arranged in a display mode are arranged in a floor slab, the steel bars (4) are ribbed steel bars, the two floor slabs are coplanar and are spliced on the side faces, a mounting groove (7) is formed in the junction of the two floor slab steel bars (4), the steel bars (4) extend out of the mounting groove (7), the junction of the two floor slab steel bars (4) is wrapped with the prefabricated floor slab steel bar connecting device according to any one of claims 1-4, and the mounting groove (7) is filled with concrete to cover the connecting device.
6. A method for connecting reinforcement bars of prefabricated detachable floor slabs based on the connection structure of claim 5, comprising the steps of;
splicing two floor slabs to enable the two floor slabs to be coplanar, and arranging an installation groove (7) at the junction of the reinforcing steel bars (4) of the two floor slabs;
step two, the upper cover plate (2) and the lower cover plate (3) are buckled and nested at the intersection of the reinforcing steel bars (4) of the two floor slabs;
fixing the upper cover plate (2) and the lower cover plate (3) by using a connecting piece;
and step four, backfilling the mounting groove (7) with concrete.
7. The method for connecting the reinforcement of the prefabricated detachable floor slab according to claim 6, wherein in the third step, the connecting member is a high-strength bolt (1), after the upper cover plate (2) and the lower cover plate (3) are fastened, the high-strength bolt (1) is screwed into the threaded hole to fix the upper cover plate (2) and the lower cover plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011630116.5A CN112726965A (en) | 2020-12-30 | 2020-12-30 | Detachable assembly type prefabricated floor slab steel bar connecting device, structure and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011630116.5A CN112726965A (en) | 2020-12-30 | 2020-12-30 | Detachable assembly type prefabricated floor slab steel bar connecting device, structure and method |
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| Publication Number | Publication Date |
|---|---|
| CN112726965A true CN112726965A (en) | 2021-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011630116.5A Pending CN112726965A (en) | 2020-12-30 | 2020-12-30 | Detachable assembly type prefabricated floor slab steel bar connecting device, structure and method |
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| CN (1) | CN112726965A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216521A (en) * | 2021-05-07 | 2021-08-06 | 河南省中创建筑工程有限公司 | Steel bar connection structure with prestress |
| CN114412074A (en) * | 2022-02-23 | 2022-04-29 | 长安大学 | Assembled deviation-adjusting high-strength steel bar mechanical connecting device and construction method |
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| CN210828070U (en) * | 2019-08-01 | 2020-06-23 | 合肥铁川科技有限公司 | Rigid mechanical connection joint of prefabricated building component embedded steel bars |
| CN211313099U (en) * | 2019-11-15 | 2020-08-21 | 武汉地质勘察基础工程有限公司 | Clamping plate type joint jacket |
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| CN2142477Y (en) * | 1993-01-12 | 1993-09-22 | 韩秀成 | Screw connecting block for reinforcing bar |
| CN2435454Y (en) * | 2000-05-22 | 2001-06-20 | 谢军 | Twisted steel butt-joint connetor |
| CN2663553Y (en) * | 2003-08-26 | 2004-12-15 | 西安建筑科技大学 | Composite beam of floorslab on bottom flange of steel beam |
| CN2661812Y (en) * | 2003-12-24 | 2004-12-08 | 马冬 | Reinforcing steel connector |
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| CN202882181U (en) * | 2012-02-16 | 2013-04-17 | 黑龙江宇辉新型建筑材料有限公司 | Concrete laminated slab overlapping joint with steel bar and connecting with spiral bar within span |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216521A (en) * | 2021-05-07 | 2021-08-06 | 河南省中创建筑工程有限公司 | Steel bar connection structure with prestress |
| CN113216521B (en) * | 2021-05-07 | 2024-02-13 | 河南省中创建筑工程有限公司 | Steel bar connection structure with prestressing force |
| CN114412074A (en) * | 2022-02-23 | 2022-04-29 | 长安大学 | Assembled deviation-adjusting high-strength steel bar mechanical connecting device and construction method |
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Application publication date: 20210430 |
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