CN115288368A - Mixed structure steel bar connecting node and using method thereof - Google Patents
Mixed structure steel bar connecting node and using method thereof Download PDFInfo
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- CN115288368A CN115288368A CN202211062411.4A CN202211062411A CN115288368A CN 115288368 A CN115288368 A CN 115288368A CN 202211062411 A CN202211062411 A CN 202211062411A CN 115288368 A CN115288368 A CN 115288368A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 78
- 239000010959 steel Substances 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 12
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 20
- 238000010276 construction Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 239000004567 concrete Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000007569 slipcasting Methods 0.000 description 3
- 230000008093 supporting effect Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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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
-
- 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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- 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
- E04C5/166—Connectors or means for connecting parts for reinforcements the reinforcements running in different directions
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention relates to a mixed structure steel bar connection node and a use method thereof, the mixed structure steel bar connection node comprises an upper connection piece, a lower connection piece and a positioning pipe, the upper connection piece comprises an upper connection plate and an upper connection pipe, the upper surface of the upper connection plate is eccentrically provided with the upper connection pipe, the lower connection piece comprises a lower connection plate and a lower connection pipe, the lower surface of the lower connection plate is eccentrically provided with the lower connection pipe, the upper connection plate and the lower connection plate are parallel to each other, the centers of the upper connection plate and the lower connection plate are on the same vertical line, a bolt downwards penetrates through the centers of the upper connection plate and the lower connection plate, the bolt is in sliding connection with the upper connection plate and in threaded connection with the lower connection plate, and the positioning pipe is sleeved outside the upper connection plate and the lower connection plate and in threaded connection with the upper connection plate and the lower connection plate. The invention can ensure that the malpositioned reinforcing steel bars can be normally connected, is convenient and quick to use and can ensure that the reinforcing steel bars are connected into a whole.
Description
Technical Field
The invention relates to the technical field of mixed structure buildings, in particular to a steel bar connecting node of a mixed structure and a using method thereof.
Background
In the existing building structure system with a mixed structure, in order to build quickly, the prefabricated reinforced concrete members are assembled in the future, but the steel bars extending out of the end parts of the prefabricated members are difficult to align with the sleeves, so that the construction difficulty is high, and the efficiency is low. For example, in the case of a mechanical sleeve, due to the problems of poor design, vibration during manufacturing and the like, when prefabricated parts are aligned exactly, the end parts of the building parts corresponding to each other up and down are not necessarily coaxially opposite to each other when the reinforcing steel bars are extended out, and the thread screw at the end part of each reinforcing steel bar and the thread screw at the inner thread of the end part of the mechanical sleeve cannot be sleeved in and installed, which is a technical problem that cannot be solved for a long time in the technical field of building engineering.
The steel bar is usually hammered and bent among the prior art and then is butted by a mechanical sleeve, the steel bar which is bent is inconvenient to connect, and the concrete layer of the prefabricated part needs to be excavated to ensure the steel bar 1:6, the diameter of the steel bar in the prefabricated part is 22-38mm, namely the length of the steel bar to be bent is 130-230mm, and the extension length of the steel bar at the end part of the normal prefabricated part is about 50mm, namely: the size requirement can be met only by smashing the concrete part of the prefabricated part by over 80-180mm, and the mode not only damages the prefabricated part and influences the building strength, but also prolongs the construction time and slows down the construction progress.
Application number is CN 201611026416.6's patent document discloses a precast shear wall steel bar connection node, including last prefabricated wall, lower prefabricated wall and coincide floor, the coincide floor includes prefabricated layer and cast-in-place layer, the lower extreme of going up the prefabricated wall is pre-buried to have a connecting box, goes up the connecting reinforcement lower extreme of prefabricated wall and connecting box and goes up the roof and be connected fixedly, the reinforcing bar upper end of stretching out of prefabricated wall passes cast-in-place layer and connecting box lower floor down, is connected fixedly with stretching out the reinforcing bar end through nut, gasket at last.
Although the structure can enable the two prefabricated parts to be connected when the steel bars are dislocated, the steel bars in the building parts adjacent to each other up and down cannot be connected into a whole, and the strength of the whole building is invisibly reduced.
Disclosure of Invention
In order to solve the problem that the steel bars are not convenient to connect due to dislocation in the prior art, the invention provides the steel bar connecting node with the mixed structure and the using method thereof, aiming at enabling the dislocated steel bars to be normally connected, being convenient and fast to use and enabling the steel bars to be connected into a whole.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a steel bar connecting node with a mixed structure comprises an upper connecting piece, a lower connecting piece and a positioning pipe, wherein the upper connecting piece comprises an upper connecting plate and an upper connecting pipe, the upper surface of the upper connecting plate is eccentrically provided with the upper connecting pipe, the upper connecting plate is provided with a first through hole corresponding to the upper connecting pipe, the diameter of the first through hole is the same as the inner diameter of the upper connecting pipe, and upper internal threads which are connected into a whole from top to bottom are arranged in the first through hole and the upper connecting pipe;
the lower connecting piece comprises a lower connecting plate and a lower connecting pipe, the lower surface of the lower connecting plate is eccentrically provided with the lower connecting pipe, the lower connecting plate is provided with a second through hole corresponding to the lower connecting pipe, the diameter of the second through hole is the same as the inner diameter of the lower connecting pipe, and lower internal threads which are connected into a whole up and down are arranged in the second through hole and the lower connecting pipe;
the upper connecting plate and the lower connecting plate are parallel to each other, the centers of the upper connecting plate and the lower connecting plate are on the same vertical line, the bolt downwards penetrates through the centers of the upper connecting plate and the lower connecting plate, the bolt is connected with the upper connecting plate in a sliding mode and is in threaded connection with the lower connecting plate, and the positioning pipe is sleeved outside the upper connecting plate and the lower connecting plate and is in threaded connection with the upper connecting plate and the lower connecting plate.
Furthermore, the upper connecting plate and the lower connecting plate are waist-shaped plate bodies, the peripheral walls of the upper connecting plate and the lower connecting plate respectively comprise two straight surfaces corresponding to each other and two arc-shaped surfaces corresponding to each other, the two arc-shaped surfaces of the upper connecting plate and the lower connecting plate are on the same cylindrical surface, the two arc-shaped surfaces of the upper connecting plate are provided with integrated first external threads, and the two arc-shaped surfaces of the lower connecting plate are provided with integrated second external threads.
Furthermore, a first through hole is formed in the center of the upper connecting plate, a second through hole is formed in the center of the lower connecting plate, limited internal threads are formed in the inner wall of the second through hole, the diameter of the first through hole is larger than that of the second through hole, the head of the bolt is located above the upper connecting plate, the rod portion of the bolt sequentially penetrates through the first through hole and the second through hole, and the rod portion of the bolt is in sliding contact with the first through hole and is in threaded connection with the second through hole.
Furthermore, the diameter of the rod part of the bolt is larger than or equal to the large diameter of the lower internal thread and the large diameter of the upper internal thread, and the distance from the center of the first through hole to the center of the first through hole is equal to the distance from the center of the second through hole to the center of the second through hole.
Further, the lead of the first external thread and the lead of the second external thread are larger than the lead of the limiting internal thread.
Further, the locating tube is externally provided with a connecting rib, the connecting rib comprises a ring plate and vertical plates, the inner side face of the ring plate is connected to the outer wall of the locating tube between the upper connecting plate and the lower connecting plate, the upper surface and the lower surface of the ring plate are both connected with a row of vertical plates, and the vertical plates in each row are annularly arranged on the periphery of the locating tube and are fixedly connected with the outer wall of the locating tube.
Furthermore, circular through holes are formed in the ring plate between every two adjacent vertical plates in each row of vertical plates and in each vertical plate.
Furthermore, the outer edge of the cross section of the positioning pipe is a regular hexagon, the inner edge of the cross section of the positioning pipe is a circle, and the annular plate is an annular plate body with a hexagonal inner edge and a circular outer edge.
Furthermore, each vertical plate in the row of vertical plates on the upper surface of the annular plate is opposite to each vertical plate in the row of vertical plates on the lower surface one by one, and each vertical plate in each row of vertical plates on the upper surface and the lower surface of the annular plate is arranged on a vertical centerline of six sides of the positioning pipe.
The use method of the mixed structure steel bar connecting node comprises the following steps:
A. detaching the upper connecting piece, the lower connecting piece, the bolt and the positioning pipe to separate the upper connecting piece, the lower connecting piece, the bolt and the positioning pipe from each other;
B. one steel bar end part positioned below two steel bars needing to be connected in the two prefabricated parts is connected with a lower connecting piece, the other steel bar end part is connected with an upper connecting piece, and then the positioning pipe is connected outside the lower connecting plate;
C. in the assembly process of the prefabricated parts, when the two prefabricated parts are in an up-down opposite state, the upper connecting piece and the lower connecting piece are respectively rotated, when the upper connecting plate and the lower connecting plate are close to each other and the centers of the two prefabricated parts are on the same vertical line, the rotation is stopped, a bolt is inserted into the first through hole, the bolt is rotated, the rod part of the bolt is screwed into the second through hole and is in threaded connection with the second through hole, and then the bolt is continuously rotated, so that the connection of the upper steel bar and the lower steel bar has pretightening force;
D. and rotating the positioning pipe to enable the positioning pipe to move upwards until the positioning pipe is in threaded connection with the upper connecting plate, and completing the connection and installation of the reinforcing steel bar connecting node and the reinforcing steel bar of the mixed structure.
Through the technical scheme, the invention has the beneficial effects that:
the steel bars in the upper prefabricated wall and the lower prefabricated wall are connected with each other to form an integral connecting structure, so that the integral stability and the tensile strength of the building structure are improved.
The invention is convenient and rapid to use, is directly connected with the extending steel bars and the end parts of the steel bars, does not need to adjust the prefabricated parts or the steel bars, does not need to smash the concrete on the prefabricated parts, does not need to bend the steel bars, avoids the strength weakening of the prefabricated parts, can keep the integrity of the prefabricated parts, does not increase the labor intensity and the labor time of workers, and ensures that the engineering is rapidly carried out.
The invention has certain pretightening force and supporting effect after connection, can be used for finely adjusting the gap of the prefabricated part, and further enhances the connection strength after grouting.
The invention can realize quick connection no matter the steel bars are in a coaxial relative state or a staggered state, and the connection performance is not influenced.
Drawings
FIG. 1 is a schematic structural view (partially in section) of the present invention;
FIG. 2 is a cross-sectional front view of the present invention;
FIG. 3 is a schematic view of the upper connector of the present invention;
FIG. 4 is a schematic view of the construction of the lower connector of the present invention;
FIG. 5 is a top view of the present invention;
fig. 6 is a state diagram of the use of the present invention.
The reference numbers in the drawings are as follows: 1. mounting a prefabricated wall; 2. lower prefabricated wall; 3. overlapping the floor slabs; 4. prefabricating a layer; 5. a cast-in-place layer; 6. a connection box; 7. an upper connecting piece; 8. a lower connecting member; 9. a bolt; 10. a positioning tube; 11. an upper connecting plate; 12. an upper connecting pipe; 13. a first through hole; 14. an upper internal thread; 15. a lower connecting plate; 16. a lower connecting pipe; 17. a lower internal thread; 18. a second through hole; 19. a connecting rib; 20. a ring plate; 21. a riser.
Detailed Description
The invention is further described with reference to the following figures and detailed description:
it should be noted that as used in the following description, the terms "front," "back," "left," "right," "upper," "lower," "bottom," and "top" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in fig. 1 to 6, a steel bar connection node of a mixed structure is installed in a prefabricated wall body, the prefabricated wall body comprises an upper prefabricated wall 1, a lower prefabricated wall 2 and a composite floor slab 3, the composite floor slab 3 comprises a prefabricated layer 4 and a cast-in-place layer 5, the prefabricated layer 4 is positioned below the cast-in-place layer 5 and is fixedly connected with the lower surface of the cast-in-place layer 5, the lower surface of the prefabricated layer 4 of the composite floor slab 3 is connected with the upper end of the lower prefabricated wall 2, the upper surface of the cast-in-place layer 5 is connected with the lower end of the upper prefabricated wall 1, a connection box 6 is pre-embedded at the bottom end of the upper prefabricated wall 1, the connection box 6 is a box body with an opening at the lower end and the front end, the upper prefabricated wall 1 is provided with upper steel bars and the lower prefabricated wall 2 is provided with lower steel bars, the lower ends of the upper steel bars extend into the upper part of the connection box 6 when the upper prefabricated wall 1 is connected with the upper surface of the cast-in-place layer 5, the lower end of an upper steel bar is close to the upper end of a lower steel bar, the end parts of the upper steel bar and the lower steel bar are connected through a mixed structure steel bar connecting node in a connecting box 6, the mixed structure steel bar connecting node comprises an upper connecting piece 7, a lower connecting piece 8 and a positioning pipe 10, the upper connecting piece 7 comprises an upper connecting plate 11 and an upper connecting pipe 12, the upper surface of the upper connecting plate 11 is eccentrically provided with the upper connecting pipe 12, the lower end of the upper connecting pipe 12 is fixedly connected with the upper surface of the upper connecting plate 11, a space is reserved between the central axis of the upper connecting pipe 12 and the central axis of the upper connecting plate 11, the upper connecting plate 11 is provided with a first through hole corresponding to the upper connecting pipe 12, the diameter of the first through hole is the same as the inner diameter of the upper connecting pipe 12, and the upper connecting pipe 12 and the upper connecting plate 11 are internally provided with an upper internal thread 14 which is connected into a whole up and down;
the lower connecting piece 8 comprises a lower connecting plate 15 and a lower connecting pipe 16, the lower surface of the lower connecting plate 15 is eccentrically provided with the lower connecting pipe 16, the lower connecting pipe 16 is a round pipe body with the shape and size consistent with that of the upper connecting pipe 12, the upper end of the lower connecting pipe 16 is fixedly connected with the lower surface of the lower connecting plate 15, a distance is reserved between the central axis of the lower connecting pipe 16 and the central axis of the lower connecting plate 15, the lower connecting plate 15 is provided with a second through hole corresponding to the lower connecting pipe 16, the diameter of the second through hole is the same as the inner diameter of the lower connecting pipe 16, lower internal threads 17 which are connected into a whole up and down are arranged in the second through hole and the lower connecting pipe, and the shape and size of the lower internal threads 17 are consistent with that of the upper internal threads 14;
the upper connecting plate 11 and the lower connecting plate 15 are parallel to each other, centers of the upper connecting plate 11 and the lower connecting plate 15 are on the same vertical line, a bolt 9 downwards penetrates through the centers of the upper connecting plate 11 and the lower connecting plate 15, the bolt 9 is in sliding connection with the upper connecting plate 11 and is in threaded connection with the lower connecting plate 15, the positioning pipe 10 is sleeved outside the upper connecting plate 11 and the lower connecting plate 15 and is in threaded connection with the upper connecting plate 11 and the lower connecting plate 15, and positioning internal threads are arranged on the inner peripheral wall of the positioning pipe 10.
The center of the upper connecting plate 11 is provided with a first through hole 13, the first through hole 13 is a circular hole, the center of the lower connecting plate 15 is provided with a second through hole 18, the second through hole 18 is a circular hole, limited internal threads are arranged on the inner wall of the second through hole 18, the diameter of the first through hole 13 is larger than that of the second through hole 18, a bolt 9 penetrates through the first through hole 13 and the second through hole 18 together, the head of the bolt 9 is positioned above the upper connecting plate 11, the rod part of the bolt 9 sequentially penetrates through the first through hole 13 and the second through hole 18, the rod part of the bolt 9 is in sliding contact with the first through hole 13 and is in threaded connection with the second through hole 18, and the diameter of the head part of the bolt 9 is larger than that of the first through hole 13.
The strength of the bolt 9 is greater than that of the steel bars in the upper prefabricated wall 1 and the lower prefabricated wall 2, the diameter of the rod part of the bolt 9 is greater than or equal to the large diameter of the lower internal thread 17 and the large diameter of the upper internal thread 14, and the distance from the center of the first through hole to the center of the first through hole 13 is equal to the distance from the center of the second through hole to the center of the second through hole 18.
The lead of the first external thread and the lead of the second external thread are larger than the lead of the limiting internal thread.
Locating tube 10 is equipped with connecting rib 19 outward, connecting rib 19 includes crown plate 20 and riser 21, on 20 medial surfaces fixed connection of crown plate on upper junction plate 11 and the locating tube 10 outer wall between lower connecting plate 15, 20 upper surfaces of crown plate and lower surface all are connected with one row of riser 21, and every row of riser 21 is all annular display in locating tube 10 periphery, and is a plurality of one side and the locating tube 10 outer wall fixed connection of riser 21 orientation locating tube 10.
Circular through holes are formed in the annular plate 20 between two adjacent vertical plates 21 in each row of vertical plates 21 and in each vertical plate 21.
The cross-section outward flange of registration arm 10 is regular hexagon, cross-section inward flange for circular, ring plate 20 is that inboard edge is hexagon, outside edge are circular shape annular plate body, can make the registration arm structure more stable, can not appear rotating the condition after slip casting, increases joint strength.
Each riser in the row of riser 21 of crown plate 20 upper surface respectively with each riser one-to-one in the row of riser 21 of lower surface, every riser 21 sets up respectively on the vertical midline of six sides of registration arm 10 in every row of riser 21 of crown plate 20 upper surface and lower surface, can eliminate the weak department of registration arm, increases the intensity of registration arm.
The use method of the hybrid structure steel bar connecting joint comprises the following steps:
A. detaching the upper connecting piece 7, the lower connecting piece 8, the bolt 9 and the positioning pipe 10 to separate the upper connecting piece 7, the lower connecting piece 8, the bolt 9 and the positioning pipe 10 from each other;
B. one steel bar end part positioned below two steel bars to be connected in the two prefabricated parts is connected with a lower connecting piece 8, the other steel bar end part is connected with an upper connecting piece 7, namely, the upper end of the lower steel bar is connected with the lower connecting piece 8, the lower end of the upper steel bar is connected with the upper connecting piece 7, and then a positioning pipe 10 is connected outside a lower connecting plate 15;
C. in the assembly process of the prefabricated parts, when the two prefabricated parts are in an up-down opposite state, the upper connecting piece 7 and the lower connecting piece 8 are respectively rotated, when the upper connecting plate 11 and the lower connecting plate 15 are close to each other and the centers of the two prefabricated parts are on the same vertical line, the rotation is stopped, the bolt 9 is inserted into the first through hole 13, the bolt 9 is rotated, the rod part of the bolt 9 is screwed into the second through hole 18 and is in threaded connection with the second through hole 18, and then the bolt 9 is continuously rotated, so that the connection of the upper steel bar and the lower steel bar has pretightening force;
D. and rotating the positioning pipe 10 to enable the positioning pipe 10 to move upwards until the positioning pipe 10 is in threaded connection with the upper connecting plate 11, and completing the connection and installation of the steel bar connecting node of the mixed structure and the steel bar.
The connecting box 6 is filled with grouting material.
The concrete using method of the invention is that before using, the invention is disassembled, the upper connecting piece 7, the lower connecting piece 8, the bolt 9 and the positioning pipe 10 are separated, when in use, the upper end of the lower prefabricated wall 2 is connected with the prefabricated layer 4, the lower steel bar passes through the prefabricated layer 4, then the cast-in-situ layer 5 is manufactured on the prefabricated layer 4, the upper surface of the cast-in-situ layer 5 is lower than the upper end of the lower steel bar, the upper end of the lower steel bar is connected with the lower connecting piece 8, the upper end of the lower steel bar extends out of the lower connecting piece 8, the positioning pipe 10 is connected outside the lower connecting plate 15, then the upper end of the upper steel bar is connected with the upper connecting piece 7, the upper connecting piece 7 is connected with the lower end of the upper steel bar through the upper internal thread 14, and the lower end of the upper steel bar extends out of the upper connecting piece 7, then the upper prefabricated wall 1 is hoisted to the upper surface of the cast-in-situ layer 5, the connecting box 6 covers the upper end of the lower steel bar, so that the upper prefabricated wall 1 and the lower prefabricated wall 2 are aligned according to the design requirement, (at this moment, the side surfaces of the upper prefabricated wall 1 and the lower prefabricated wall 2 are aligned or the end surfaces are opposite up and down), then the upper connecting piece 7 on the upper steel bar is rotated by taking the central axis of the upper steel bar as a rotating shaft, the lower connecting piece 8 on the lower steel bar is rotated by taking the central axis of the lower steel bar as a rotating shaft, so that the upper connecting plate 11 is close to the lower connecting plate 15, at this moment, the upper connecting piece 7 is still positioned above the positioning pipe 10 and is not connected with the positioning pipe 10, the lower connecting piece 8 is positioned in the upper part of the positioning pipe 10, when the upper connecting plate 11 is close to the lower connecting plate 15 and the centers are on the same vertical line, the rotation is stopped, a bolt 9 is penetrated into the first through hole 13, the bolt 9 is rotated to enable the rod part of the bolt 9 to be screwed into the second through hole 18 of the lower connecting plate 15 to be matched with the limiting internal thread, the bolt 9 is continuously rotated, so that the connection of the upper steel bar and the lower steel bar has certain pretightening force, then the positioning pipe 10 is rotated to enable the positioning pipe 10 to move upwards until the positioning pipe is in threaded connection with the upper connecting plate 11, the connection and installation of the connecting node and the steel bar are completed, and at the moment, the prefabricated wall 1 has positioning capacity, namely: after the installation of the prefabricated wall is finished, the effect of tensile strength and support are achieved between the end portions of the two steel bars, even if a hoisting tool is loosened, the upper prefabricated wall 1 cannot displace, then grouting material is poured into the connecting box 6, the grouting material can enter the positioning tube 10 when the inner space of the connecting box 6 is filled, then the positioning tube 10 is fully filled upwards from the gap between the lower connecting plate 15 and the positioning tube 10 and the gap between the upper connecting plate 11 and the positioning tube 10, and when the connecting box 6 is fully filled with the grouting material, the inner space of the positioning tube 10 is also fully filled with the grouting material, so that the connection strength of the connecting pieces (namely the upper connecting piece 7 and the lower connecting piece 8) is enhanced.
The invention can connect the two ends of the upper prefabricated wall 1 and the lower prefabricated wall 2 which are supposed to correspond but have dislocation caused by the production and manufacturing problems, and can ensure good connection stability even if the steel bars are dislocated, so that the prefabricated member is connected and has stability before pouring and caulking.
After the connection is finished, the bolt 9 enables the upper connecting plate 11 and the lower connecting plate 15 to be close to each other to form pretightening force, and the positioning pipe 10 enables the distance between the upper connecting plate 11 and the lower connecting plate 15 not to be changed and can also form a supporting function after the upper connecting plate 11 and the lower connecting plate 15 are connected, namely, the invention can enable the upper reinforcing steel bar and the lower reinforcing steel bar to be integrated to have pretightening force and a supporting function, can also finely adjust the installation height of a prefabricated part, and is filled with grouting material to further enhance the connection strength.
Because the upper connecting plate 11 and the lower connecting plate 15 can rotate before being connected with the positioning pipe 10, the invention has a larger adjusting range for the dislocation of the two reinforcing steel bars, and can quickly connect the two coaxial reinforcing steel bars and the two dislocated reinforcing steel bars, so the invention is suitable for prefabricated parts with qualified strength and qualified reinforcing steel bar distribution, is also suitable for prefabricated parts with qualified strength and with the distribution deviation of the reinforcing steel bars, is suitable for the situation that only one reinforcing steel bar in a certain prefabricated part is dislocated, is also suitable for the situation that all the reinforcing steel bars in a certain prefabricated part are dislocated together, and simultaneously does not limit the dislocation directions of a plurality of groups of reinforcing steel bars which are supposed to correspond to be different or the same.
The invention is especially suitable for the connection of large-scale components and large-diameter steel bars, can reduce unnecessary steps of construction, ensures that the components are connected in the original state, can be connected without damaging the building components, and enhances the service performance of the connection stability of the building components after connection.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various modifications can be made to the technical solution of the present invention within the scope of disclosure without departing from the spirit of the present invention.
Claims (10)
1. A steel bar connecting joint with a mixed structure is characterized by comprising an upper connecting piece (7), a lower connecting piece (8) and a positioning pipe (10), wherein the upper connecting piece (7) comprises an upper connecting plate (11) and an upper connecting pipe (12), the upper connecting pipe (12) is eccentrically arranged on the upper surface of the upper connecting plate (11), a first through hole corresponding to the upper connecting pipe (12) is formed in the upper connecting plate (11), the diameter of the first through hole is the same as the inner diameter of the upper connecting pipe (12), and upper internal threads (14) which are connected into a whole up and down are formed in the first through hole and the upper connecting pipe (12);
the lower connecting piece (8) comprises a lower connecting plate (15) and a lower connecting pipe (16), the lower surface of the lower connecting plate (15) is eccentrically provided with the lower connecting pipe (16), the lower connecting plate (15) is provided with a second through hole corresponding to the lower connecting pipe (16), the diameter of the second through hole is the same as the inner diameter of the lower connecting pipe (16), and lower internal threads (17) which are connected into a whole up and down are arranged in the second through hole and the lower connecting pipe (16);
the upper connecting plate (11) and the lower connecting plate (15) are parallel to each other, centers of the upper connecting plate and the lower connecting plate are on the same vertical line, a bolt (9) downwards penetrates through the centers of the upper connecting plate (11) and the lower connecting plate (15), the bolt (9) is in sliding connection with the upper connecting plate (11) and is in threaded connection with the lower connecting plate (15), and the positioning pipe (10) is sleeved outside the upper connecting plate (11) and the lower connecting plate (15) and is in threaded connection with the upper connecting plate (11) and the lower connecting plate (15).
2. The hybrid structure steel bar connection node according to claim 1, wherein the upper connection plate (11) and the lower connection plate (15) are waist-shaped plate bodies, the outer peripheral walls of the upper connection plate (11) and the lower connection plate (15) respectively comprise two straight surfaces and two arc surfaces, the two arc surfaces of the upper connection plate (11) and the two arc surfaces of the lower connection plate (15) are located on the same cylindrical surface, the two arc surfaces of the upper connection plate (11) are provided with first external threads, and the two arc surfaces of the lower connection plate (15) are provided with second external threads.
3. A hybrid construction steel bar connection node according to claim 2, characterized in that the upper connection plate (11) has a first through hole (13) in the center, the lower connection plate (15) has a second through hole (18) in the center, the inner wall of the second through hole (18) has a limited internal thread, the diameter of the first through hole (13) is larger than that of the second through hole (18), the head of the bolt (9) is located above the upper connection plate (11), the rod of the bolt (9) passes through the first through hole (13) and the second through hole (18) in sequence, and the rod of the bolt (9) is in sliding contact with the first through hole (13) and in threaded connection with the second through hole (18).
4. A hybrid structural rebar connecting joint according to claim 3, wherein the diameter of the shank of the bolt (9) is greater than or equal to the major diameters of the lower internal thread (17) and the upper internal thread (14), and the distance from the center of the first through hole to the center of the first through hole (13) is equal to the distance from the center of the second through hole to the center of the second through hole (18).
5. A hybrid structural rebar junction according to claim 3 wherein the leads of the first and second external threads are greater than the leads of the internal limiting threads.
6. The hybrid structure steel bar connection node of claim 1, wherein the positioning tube (10) is externally provided with a connection rib (19), the connection rib (19) comprises a ring plate (20) and vertical plates (21), the inner side surface of the ring plate (20) is connected to the outer wall of the positioning tube (10) between the upper connecting plate (11) and the lower connecting plate (15), the upper surface and the lower surface of the ring plate (20) are both connected with a row of vertical plates (21), each row of vertical plates (21) are annularly arranged on the periphery of the positioning tube (10), and a plurality of vertical plates (21) are fixedly connected with the outer wall of the positioning tube (10) towards one side of the positioning tube (10).
7. A hybrid construction rebar junction according to claim 6, wherein circular through holes are provided in the annulus (20) between two adjacent risers (21) in each row of risers (21) and in each riser (21).
8. A hybrid structural rebar junction according to claim 6, wherein the locator tubes (10) are regular hexagonal in cross-section and circular in cross-section at their outer edges, and the ring plates (20) are annular plates hexagonal at their inner edges and circular at their outer edges.
9. A hybrid construction rebar junction according to claim 8, wherein each riser (21) of the row of risers (21) of the upper surface of the ring (20) is one-to-one opposite each riser (21) of the row of risers (21) of the lower surface, each riser (21) of each row of risers (21) of the upper and lower surfaces of the ring (20) being respectively disposed on a vertical midline of six sides of the positioning tube (10).
10. A method of using a hybrid structural rebar junction according to any one of claims 1-5, comprising the steps of:
A. the upper connecting piece (7), the lower connecting piece (8), the bolt (9) and the positioning pipe (10) are disassembled, so that the upper connecting piece (7), the lower connecting piece (8), the bolt (9) and the positioning pipe (10) are separated from each other;
B. before the prefabricated parts are prepared to be assembled and when the two prefabricated parts are still in a separated state, one steel bar end part positioned below two steel bars needing to be connected in the two prefabricated parts is connected with a lower connecting piece (8), the other steel bar end part is connected with an upper connecting piece (7), and then a positioning pipe (10) is connected outside a lower connecting plate (15);
C. in the assembly process of the prefabricated parts, when the two prefabricated parts are in an up-down relative state, the upper connecting piece (7) and the lower connecting piece (8) are respectively rotated, when the upper connecting plate (11) and the lower connecting plate (15) are close to each other and the centers of the two prefabricated parts are on the same vertical line, the rotation is stopped, the bolt (9) is inserted into the first through hole (13), the bolt (9) is rotated, the rod part of the bolt (9) is screwed into the second through hole (18) to be in threaded connection with the second through hole (18), and then the bolt (9) is continuously rotated, so that the connection of the upper reinforcing steel bar and the lower reinforcing steel bar has pretightening force;
D. and rotating the positioning pipe (10) to enable the positioning pipe (10) to move upwards until the positioning pipe (10) is in threaded connection with the upper connecting plate (11), and connecting and installing the reinforcing steel bar connecting node of the mixed structure with the reinforcing steel bar are completed.
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| CN202211062411.4A CN115288368A (en) | 2022-08-31 | 2022-08-31 | Mixed structure steel bar connecting node and using method thereof |
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