CN112659357A - Steel bar connecting structure of prefabricated part and construction method thereof - Google Patents
Steel bar connecting structure of prefabricated part and construction method thereof Download PDFInfo
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- CN112659357A CN112659357A CN202110096723.6A CN202110096723A CN112659357A CN 112659357 A CN112659357 A CN 112659357A CN 202110096723 A CN202110096723 A CN 202110096723A CN 112659357 A CN112659357 A CN 112659357A
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Abstract
The invention discloses a steel bar connecting structure of an assembly type prefabricated part and a construction method thereof, and solves the technical problems that the existing assembly type prefabricated part is difficult in steel bar connecting construction and poor in load transfer reliability. The steel bar connecting structure of the prefabricated components comprises a conversion connecting plate, and two sides of the conversion connecting plate are respectively welded with the extension steel bars of the adjacent prefabricated components. The construction method of the steel bar connecting structure of the prefabricated assembly comprises two corresponding methods when two different structures of the connecting plate are converted. When the prefabricated components are processed in a factory mode, the lengthened steel bars are welded to the conversion connecting steel plates, during field construction, the conversion connecting steel plates at the end portions of the lengthened steel bars are aligned with the existing steel bar end portion conversion connecting steel plates needing lengthening, the two conversion connecting steel plates are welded into a whole, and therefore conversion and transmission of stress steel bar loads are completed through the conversion connecting steel plates.
Description
Technical Field
The invention relates to the technical field of construction of prefabricated components, in particular to a steel bar connecting structure of a prefabricated component and a construction method thereof.
Background
The connection and extension of the steel bars in the construction of the building engineering are very important links, and play an important role in the safety of the reinforced concrete structure. The existing cast-in-place construction method has a plurality of reliable connection methods, but with the development of industrial buildings, particularly the popularization of prefabricated components, the original reinforcing steel bar lengthening and connecting method cannot meet the requirements of the industrial buildings, and a new connecting method is urgently needed to be found to adapt to the requirements of the industrial development.
The current "technical code for prefabricated concrete structures" specifies that: in the assembly type structure, the longitudinal steel bar connection at the joints and the seams is realized by adopting the connection modes of mechanical connection, sleeve grouting connection, slurry anchor lap joint connection, welding connection, binding lap joint connection and the like according to the requirements of joint stress, construction process and the like. The welding connection is more by adopting the binding bar welding, butt welding and other methods in the cast-in-place construction, and because the cast-in-place construction adopts the on-site binding and forming mode of a single reinforcing steel bar, the joint is arranged at the position with an operation space, and the on-site alignment and welding construction of the head of the reinforcing steel bar needing to be lengthened is more convenient. However, on the premise of industrial construction, the steel bar mesh or the steel bar cage which is processed in factory, especially the steel bars which need to be lengthened on site in the prefabricated part, needs to align the head of each steel bar and then perform welding construction, and the difficulty is very high or even difficult to complete.
Through retrieval, the invention patent application with the prior application publication date of 2019.03.08 and the application publication number of CN109441017A discloses a dry type steel bar connector for an assembly type building and a using method thereof, the dry type steel bar connector comprises vertical plates arranged along the vertical direction, a plurality of groups of first transverse plates fixed on the left sides of the vertical plates, and second transverse plates fixed on the right sides of the vertical plates and corresponding to each group of first transverse plates, wherein the first transverse plates are positioned in a prefabricating area of the dry type steel bar connector, the second transverse plates are positioned in a back supplement area of the dry type steel bar connector, through holes are respectively formed in the first transverse plates and the second transverse plates, steel bars of prefabricated components in the prefabricating area penetrate through the through holes of the first transverse plates, and steel bars of prefabricated components in the back supplement area penetrate through the through holes of the second transverse plates and are fastened through nuts.
Although the technical scheme of above-mentioned patent application is comparatively convenient for traditional grout muffjoint, nevertheless has the shortcoming. Firstly, because the number of the steel bars in the prefabricated parts is large, the steel bars of the upper and lower adjacent prefabricated parts need to be aligned with the through holes of the prefabricated parts in a threaded connection mode, and the method can be realized in an ideal state, but the steel bars need to be accurately hoisted in the actual construction process, and the construction requirement is high. Secondly, in the process of prefabrication, transportation and construction in a factory, the extension steel bars of the prefabricated parts can deflect under external force, the deflection of individual steel bars can cause that the whole row of steel bars cannot penetrate through the preset position of the through hole, and the purpose of connection can be achieved only by rectifying the deviation of the steel bars. Secondly, rectify the reinforcing bar in the installation of lifting by crane of prefabricated component, not only seriously influence the efficiency of construction, increased construction equipment live time and cost of labor, there is the potential safety hazard moreover. In addition, in the above patent application, the adjacent prefabricated components are not in the same straight line, and the steel bar has poor stress load transmission reliability, especially for high-rise buildings. In addition, in the above patent application, the dry type reinforcing bar connector has many parts, and each pair of reinforcing bar connection requires a plurality of nuts and a plurality of washers, which not only complicates the operation steps and reduces the efficiency, but also requires a sufficient operation space to fasten the reinforcing bar connection.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a steel bar connecting structure of an assembly type prefabricated part and a construction method thereof, and solves the technical problems that the existing assembly type prefabricated part is difficult in steel bar connecting construction and poor in load transfer reliability.
The technical scheme of the invention is realized as follows: the utility model provides a steel bar connection structure of assembled prefabricated component, includes the conversion connecting plate, the both sides of conversion connecting plate respectively with adjacent assembled prefabricated component's extension reinforcing bar welding.
The extension steel bars of the prefabricated components on one side are welded with the conversion connecting plate during prefabrication, and the extension steel bars of the prefabricated components on the other side are welded with the conversion connecting plate during assembly.
The conversion connecting plate is provided with a groove, and the reinforcing steel bars are welded with the conversion connecting plate through the groove.
The conversion connecting plate comprises a plurality of connecting units in H shapes, and the lengthened steel bars are welded with the conversion connecting plate through notches at two ends of the connecting units.
The conversion connecting plate comprises a first sub plate and a second sub plate, the first sub plate and the second sub plate are respectively welded with the extension steel bars of adjacent prefabricated parts, the first sub plate and the second sub plate are independent of each other during prefabrication, and one sides of the first sub plate and the second sub plate, which deviate from the extension steel bars, are welded and connected during assembly.
The first branch plate and the second branch plate respectively comprise a plurality of concave connecting blocks, and the lengthening steel bars are welded with the conversion connecting plates through notches of the connecting blocks.
The conversion connecting plate is a steel plate, and the extension reinforcing steel bars are stress reinforcing steel bars of the prefabricated wall.
A construction method of a reinforcing bar connection structure of prefabricated components comprises the following steps of when a conversion connection plate is a split structure comprising a first split plate and a second split plate: when prefabricated components are prefabricated, the elongated steel bars of each prefabricated component are welded with the first or second split plates; when the prefabricated components are assembled on site, the first sub-plate and the second sub-plate which are adjacent to each other are spliced and welded to each other;
when the conversion connection plate is a monolithic structure comprising several connection units shaped as H: when prefabricated components are prefabricated, the elongated steel bar of one prefabricated component in the adjacent prefabricated components is welded in the notch on one side of the conversion connecting plate; when the prefabricated components are assembled on site, the elongated steel bars of the other prefabricated component in the adjacent prefabricated components are welded in the notches on the other side of the conversion connecting plate.
And more than two elongated steel bars in the prefabricated parts form a group.
The extension steel bars comprise vertical steel bars and transverse steel bars, and when the prefabricated components are prefabricated, the vertical steel bars and the transverse steel bars are connected with a steel bar mesh or a steel bar cage, and then concrete is poured.
The invention designs a conversion connecting steel plate, when an assembled prefabricated part is processed in a factory, an extension steel bar is welded on the conversion connecting steel plate, when in site construction, the conversion connecting steel plate at the end part of the extension steel bar is aligned with the conversion connecting steel plate at the end part of the existing steel bar needing extension, and two conversion connecting steel plates are welded into a whole, so that the conversion and transmission of the load of the stressed steel bar are completed through the conversion connecting steel plates.
By adopting the conversion connection mode, under the factory condition, single lengthened steel bars can be smoothly and sequentially embedded into the opening of the conversion connection plate and firmly welded to form a flat end face similar to a steel member, and the site assembly work is simplified into one-time operation to finish the accurate alignment of the whole reinforcing mesh reinforcement bar needing to be lengthened. The welding between the conversion connection steel plates is also a horizontal welding line which is convenient to operate, the required operation space is small, and the method is particularly suitable for lengthening the stress steel bars of the prefabricated components.
Although one welding procedure is additionally arranged between the conversion connecting steel plates, the difficult problem of field extension of the stressed steel bar of the prefabricated component is effectively solved in a space as small as possible, so that the field extension part of the stressed steel bar is simple and clear in load transfer path, visual and visible in operation process, convenient in quality detection and safe and reliable in whole.
Drawings
In order to illustrate the embodiments of the invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the invention, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.
Fig. 1 is a schematic view of a configuration of a conversion connection plate in embodiment 1;
FIG. 2 is a second schematic view showing a structure of a conversion connecting plate according to embodiment 1;
FIG. 3 is a structural view of a connecting unit of a switch connecting plate in embodiment 1;
FIG. 4 is a structural view of the connection unit and the elongated reinforcing bar in the welding of embodiment 1;
FIG. 5 is a schematic view of a first step of the construction using the conversion connection plate of FIG. 1;
FIG. 6 is a schematic diagram of a second step of construction using the conversion connecting plate in FIG. 1;
FIG. 7 is a schematic view of a first step of the construction using the conversion connection plate of FIG. 2;
FIG. 8 is a schematic view of a second step of construction using the conversion connection plate of FIG. 2;
FIG. 9 is a third schematic view showing a configuration of a conversion connecting plate according to embodiment 2;
FIG. 10 is a fourth schematic view showing a configuration of a switch connecting plate according to embodiment 2;
fig. 11 is a structural view of a connection block of a switch connection plate in embodiment 2;
fig. 12 is a structural view of the connecting block after being welded to the elongated steel bar in embodiment 2;
FIG. 13 is a schematic view of a step of construction using the transition joint plate of FIG. 9;
FIG. 14 is a schematic view of a second step of the construction process using the conversion connection plate of FIG. 9;
FIG. 15 is a schematic view of a step of construction using the transfer connector plate of FIG. 10;
FIG. 16 is a schematic view of a second step of the construction using the conversion connecting plate of FIG. 10;
fig. 17 is a schematic view showing the connection of the mesh reinforcement of the prefabricated units with the conversion connection plate;
in the figure: 1-a connection unit, 101-a first board, 102-a second board; 2-groove, 3-lengthening steel bar, 4-welding line, 5-connecting block and 6-horizontal welding line.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The conversion connecting plate comprises a plurality of structural forms, wherein one structural form is shown in figure 1, and the other structural form is shown in figure 2. The first structural form comprises two connecting units 1 in H shapes, the second structural form comprises four connecting units 1 in H shapes, and the structure of each connecting unit 1 is shown in figure 3.
The quantity of the connecting units 1 can be reasonably selected according to specific construction requirements, the connecting units 1 are integrally connected or detachably connected through connecting plates, the extension steel bars 3 are welded with the conversion connecting plates through notches at two ends of the connecting units 1, the end parts of the extension steel bars 3 are welded in the notches, and welding seams 4 are arranged on the adjacent surfaces of the extension steel bars 3 and the notches. The notch is the groove 2, and the outer side wall of the groove 2 can be vertical or obliquely gathered to the elongated reinforcing steel bar 3.
The conversion connecting plate comprises a plurality of structural forms, the structural form III is shown in fig. 9, the structural form IV is shown in fig. 10, the structural form III and the structural form IV both comprise a first section plate 101 and a second section plate 102, the first section plate 101 and the second section plate 102 are respectively welded with the elongated steel bars 3 of adjacent prefabricated components, the first section plate 101 and the second section plate 102 are independent from each other during prefabrication, and the sides of the first section plate 101 and the second section plate 102, which face away from the elongated steel bars 3 during assembly, are welded and connected through a horizontal welding seam 6.
The first and second plates 101 and 102 respectively comprise a plurality of concave connecting blocks 5, the connecting blocks 5 are integrally connected or detachably connected through connecting plates, the lengthening steel bars 3 are welded with the conversion connecting plates through notches of the connecting blocks 5, and welding seams 4 are arranged on the adjacent surfaces of the lengthening steel bars 3 and the notches. The notch is the groove 2, and the outer side wall of the groove 2 can be vertical or obliquely gathered towards the elongated reinforcing steel bar 3.
Further, the conversion connecting plate is a steel plate, and the extension steel bars 3 are stress steel bars of the prefabricated wall.
As shown in fig. 13-17, when the conversion connector board is a split structure including a first splitter board 101 and a second splitter board 102: when prefabricated components are prefabricated, the elongated steel bars 3 of each prefabricated component are welded with the first or second split plates 101 or 102; when the prefabricated components are assembled on site, splicing and welding adjacent first and second split plates 101 and 102 of the adjacent prefabricated components;
furthermore, more than two elongated steel bars 3 in the prefabricated components form a group.
Further, the extension bars 3 comprise vertical bars and transverse bars, and when the prefabricated components are prefabricated, the vertical bars and the transverse bars are connected with a reinforcing mesh or a reinforcing cage, and then concrete is poured.
The structure of the switch connection plate in this embodiment is the same as that corresponding to embodiments 1 and 2.
Nothing in this specification is intended to be exhaustive of all conventional and well known techniques.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides an assembled prefabricated component's steel bar connection structure which characterized in that: the prefabricated member comprises a conversion connecting plate, wherein two sides of the conversion connecting plate are respectively welded with extension steel bars (3) of adjacent prefabricated members.
2. The reinforcing bar connecting structure of prefabricated parts according to claim 1, wherein: the lengthening steel bar (3) of the prefabricated component on one side is welded with the conversion connecting plate during prefabrication, and the lengthening steel bar (3) of the prefabricated component on the other side is welded with the conversion connecting plate during assembly.
3. The reinforcing bar connecting structure of prefabricated parts according to claim 2, wherein: a groove (2) is formed in the conversion connecting plate, and the lengthened steel bars (3) are welded with the conversion connecting plate through the groove (2).
4. The reinforcing bar connection structure of fabricated prefabricated parts according to claim 3, wherein: the conversion connecting plate comprises a plurality of connecting units (1) in H shapes, and the extension steel bars (3) are welded with the conversion connecting plate through notches at two ends of the connecting units (1).
5. The reinforcing bar connecting structure of prefabricated units according to any one of claims 1 to 4, wherein: the conversion connecting plate comprises a first sub plate (101) and a second sub plate (102), the first sub plate (101) and the second sub plate (102) are respectively welded with the extension steel bars (3) of adjacent prefabricated parts, the first sub plate (101) and the second sub plate (102) are independent of each other during prefabrication, and the first sub plate (101) and the second sub plate (102) are welded and connected on one sides departing from the extension steel bars (3) during assembly.
6. The reinforcing bar connection structure of fabricated prefabricated parts according to claim 5, wherein: the first sub-plate (101) and the second sub-plate (102) respectively comprise a plurality of concave connecting blocks (5), and the extension steel bars (3) are welded with the conversion connecting plates through notches of the connecting blocks (5).
7. The reinforcing bar connection structure of prefabricated units according to any one of claims 1 to 4 and 6, wherein: the conversion connecting plate is a steel plate, and the extension reinforcing steel bars (3) are stress reinforcing steel bars of the prefabricated wall.
8. The construction method of a reinforcing bar connection structure of prefabricated parts according to claim 7, wherein: when the conversion connection board is a split structure comprising a first split board (101) and a second split board (102): when prefabricated components are prefabricated, the elongated steel bars (3) of each prefabricated component are welded with the first or second split plates (101, 102); when the prefabricated components are assembled on site, the first sub-plate (101) and the second sub-plate (102) which are adjacent to each other are spliced and welded to each other;
when the conversion connection plate is a monolithic structure comprising several connection units (1) shaped as H: when prefabricated components are prefabricated, the elongated steel bar (3) of one prefabricated component in the adjacent prefabricated components is welded in the notch on one side of the conversion connecting plate; when the prefabricated components are assembled on site, the elongated steel bars of the other prefabricated component in the adjacent prefabricated components are welded in the notches on the other side of the conversion connecting plate.
9. The construction method of a reinforcing bar connection structure of prefabricated parts according to claim 8, wherein: and more than two elongated steel bars (3) in the prefabricated parts form a group.
10. The construction method of a reinforcing bar connection structure of prefabricated parts according to claim 8 or 9, wherein: the lengthening steel bars (3) comprise vertical steel bars and transverse steel bars, and when the prefabricated components are prefabricated, the vertical steel bars and the transverse steel bars are connected with a steel mesh or a steel cage, and then concrete is poured.
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| CN202110096723.6A CN112659357B (en) | 2021-01-25 | 2021-01-25 | Steel bar connecting structure of prefabricated part and construction method thereof |
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| CN202110096723.6A CN112659357B (en) | 2021-01-25 | 2021-01-25 | Steel bar connecting structure of prefabricated part and construction method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058821A (en) * | 1991-05-24 | 1992-02-19 | 钟莉 | Reinforcing bar connector |
| CN103132656A (en) * | 2013-02-19 | 2013-06-05 | 东南大学 | Connecting structure for vertical reinforcement bars of prefabricated wall parts |
| CN105064618A (en) * | 2015-07-12 | 2015-11-18 | 北京工业大学 | Coiled material steel bar grouting connector |
| US20160177992A1 (en) * | 2014-12-19 | 2016-06-23 | Lung-Chang Lin | Connector for Steel Reinforcing Bars |
| CN107254912A (en) * | 2017-07-11 | 2017-10-17 | 应义淼 | A kind of prefabricated concrete structure connection method |
| CN214772913U (en) * | 2021-01-25 | 2021-11-19 | 中国建筑第七工程局有限公司 | Steel bar connecting structure of assembled prefabricated part |
-
2021
- 2021-01-25 CN CN202110096723.6A patent/CN112659357B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058821A (en) * | 1991-05-24 | 1992-02-19 | 钟莉 | Reinforcing bar connector |
| CN103132656A (en) * | 2013-02-19 | 2013-06-05 | 东南大学 | Connecting structure for vertical reinforcement bars of prefabricated wall parts |
| US20160177992A1 (en) * | 2014-12-19 | 2016-06-23 | Lung-Chang Lin | Connector for Steel Reinforcing Bars |
| CN105064618A (en) * | 2015-07-12 | 2015-11-18 | 北京工业大学 | Coiled material steel bar grouting connector |
| CN107254912A (en) * | 2017-07-11 | 2017-10-17 | 应义淼 | A kind of prefabricated concrete structure connection method |
| CN214772913U (en) * | 2021-01-25 | 2021-11-19 | 中国建筑第七工程局有限公司 | Steel bar connecting structure of assembled prefabricated part |
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| CN112659357B (en) | 2022-06-14 |
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