CN114753490B - Prefabricated column connecting node based on adapter block and connecting method - Google Patents
Prefabricated column connecting node based on adapter block and connecting method Download PDFInfo
- Publication number
- CN114753490B CN114753490B CN202210457848.1A CN202210457848A CN114753490B CN 114753490 B CN114753490 B CN 114753490B CN 202210457848 A CN202210457848 A CN 202210457848A CN 114753490 B CN114753490 B CN 114753490B
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- lower connecting
- connecting piece
- connecting plate
- prefabricated member
- rear pouring
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 73
- 239000010959 steel Substances 0.000 claims abstract description 73
- 239000004567 concrete Substances 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 20
- 238000012546 transfer Methods 0.000 claims abstract description 18
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 22
- 238000005266 casting Methods 0.000 description 13
- 238000010276 construction Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000011374 ultra-high-performance concrete Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
-
- 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
-
- 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
- E04C5/165—Coaxial connection by means of sleeves
-
- 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
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
- E04G13/02—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for columns or like pillars; Special tying or clamping means therefor
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention relates to a prefabricated column connecting node based on a transfer block and a connecting method thereof, wherein the transfer block comprises an upper prefabricated member, a lower connecting member and a transfer block, the transfer block comprises an upper connecting plate, a lower connecting plate and a connecting structure, an upper connecting plate bolt through hole is formed in the upper connecting plate, a lower connecting plate bolt through hole is formed in the lower connecting plate, an upper prefabricated member rear pouring cavity is formed in the lower end face of the upper prefabricated member, a lower connecting member rear pouring cavity is formed in the upper end face of the lower connecting member, a connecting member middle rear pouring cavity is formed between the connecting structures in a surrounding mode, a rear pouring channel is formed in the upper prefabricated member and/or the lower connecting member, and the transfer block further comprises rear pouring concrete connected among the upper prefabricated member, the connecting member and the lower connecting member. The invention provides a prefabricated column connecting node based on a transfer block and a connecting method thereof, wherein connecting materials such as embedded parts/steel sleeves and the like do not need to be arranged in a prefabricated column, mounting support is not needed, the verticality can be automatically adjusted, and the connecting quality of the node can be ensured.
Description
Technical Field
The invention relates to the technical field of prefabricated building structure construction, in particular to a prefabricated column connecting node based on a switching block and a connecting method.
Background
At present, two connecting methods are often adopted for connecting the prefabricated columns, namely a method for connecting the reinforcing steel bars through grouting sleeves and locally casting concrete in situ, and a method for mechanically connecting the prefabricated columns through bolt connection and the like. The mode of connecting the steel bars through the grouting sleeve is a technology of connecting the longitudinal bars of the upper prefabricated column and the lower prefabricated column through the connecting steel bar connecting sleeve, but the grouting quality cannot be guaranteed. The mode of carrying out mechanical connection to the prefabricated column through bolted connection and the like generally does not need lateral support, and the construction speed is extremely fast, but often needs to set up the built-in fitting in the prefabricated column, and its connectivity has self characteristics, and corresponding design method is not mature enough. Therefore, the advantages of the two connecting modes are combined to develop an effective novel vertical member node connection, the prefabricated column connecting node of the assembled concrete structure, which is reliable in force transmission and simple and convenient to construct, is developed, and the prefabricated column connecting node has important significance for popularization and application of the assembled building.
Disclosure of Invention
The invention aims to provide a prefabricated column connecting node which does not need to arrange an embedded part in a prefabricated column and can ensure the connecting quality of the node.
The technical problem is solved, and the technical scheme of the prefabricated column connecting node based on the adapter block is as follows:
the prefabricated column connecting node comprises an upper prefabricated member and a lower connecting piece, wherein the upper prefabricated member comprises an upper prefabricated member reinforcing steel bar and an upper prefabricated member concrete which is poured into an integral structure with the upper prefabricated member reinforcing steel bar, the lower connecting piece comprises a lower connecting piece reinforcing steel bar and a lower connecting piece concrete which is poured into an integral structure with the lower connecting piece reinforcing steel bar, the upper prefabricated member reinforcing steel bar and the lower connecting piece reinforcing steel bar are vertically arranged, the prefabricated column connecting node further comprises a transfer block positioned between the upper prefabricated member and the lower connecting piece, the transfer block comprises an upper connecting plate, a lower connecting plate and at least four connecting structures which are connected between the upper connecting plate and the lower connecting plate along the circumferential direction, an upper connecting plate bolt through hole which is arranged corresponding to the upper prefabricated member reinforcing steel bar is formed in the periphery of the connecting structure, a lower connecting plate bolt through hole which is arranged corresponding to the lower connecting piece reinforcing steel bar is formed in the periphery of the connecting structure, the lower end of the upper prefabricated member reinforcing steel bar is respectively penetrated into the corresponding upper connecting plate bolt through hole, and an upper connecting plate fixing nut is connected to the lower side of the upper prefabricated member reinforcing steel bar; the upper ends of the lower connecting piece reinforcing steel bars are respectively penetrated in corresponding lower connecting plate bolt through holes, lower connecting plate fixing nuts are connected to the upper side threads of the upper connecting plate on the lower connecting piece reinforcing steel bars, an upper prefabricated member rear pouring cavity with a small upper part and a large lower part is formed in the lower end face of the upper prefabricated member, a lower connecting member rear pouring cavity with a small upper part and a large lower part is formed in the upper end face of the lower connecting piece, an upper connecting plate channel which is communicated with the upper prefabricated member rear pouring cavity and the connecting piece rear pouring cavity is formed in the upper connecting plate, a lower connecting plate channel which is communicated with the lower connecting piece rear pouring cavity and the connecting piece rear pouring cavity is formed in the lower connecting plate, a connecting piece rear pouring cavity which is communicated with the upper prefabricated member rear pouring cavity, a connecting piece rear pouring cavity which is radially arranged in the upper prefabricated member rear pouring cavity, a connecting piece rear pouring cavity which is radially arranged in the connecting piece rear pouring cavity and a connecting piece rear pouring cavity, and a connecting piece rear pouring cavity which are integrally connected with the upper prefabricated member, a connecting piece and a lower connecting piece.
Further, the upper side of the corresponding upper prefabricated member steel bar is connected with at least three upper connecting plate leveling nuts in a threaded manner, and the upper connecting plate leveling nuts are arranged at intervals along the circumferential direction.
Further, a lower connecting plate leveling cushion layer is arranged between the lower connecting plate and the upper end face of the lower connecting piece.
Further, the upper connecting plate and the lower connecting plate are square plate structures, wherein four upper prefabricated member steel bars are corner upper prefabricated member steel bars distributed at four corner positions of the upper connecting plate, four lower connecting member steel bars are corner lower connecting member steel bars distributed at four corner positions of the lower connecting plate, the corner lower connecting member steel bars are respectively arranged coaxially with the corresponding upper prefabricated member steel bars, the adapter block further comprises a steel bar sleeve which is in threaded connection between the corner upper prefabricated member steel bars and the corresponding corner lower connecting member steel bars, the steel bar sleeve is provided with upper connecting threads which are in threaded connection with the corner upper prefabricated member steel bars and lower connecting threads which are in threaded connection with the corner lower connecting member steel bars, and the threads of the upper connecting threads and the lower connecting threads are opposite in screwing direction.
Further, each connection structure comprises four vertical plates which are distributed radially by taking a vertical central line as a center, and grouting circulation channels for casting and forming post-pouring concrete are formed on the outer side surfaces of the vertical plates.
Further, the upper connecting plate, the lower connecting plate and the connecting structure are integrally cast and formed.
Further, the upper prefabricated member is an upper prefabricated column, and the lower connecting piece is a lower prefabricated column, a prefabricated foundation or a cast-in-situ foundation.
Further, go up prefab, lower connecting piece and be hollow structure, go up the hole of prefab and constitute the passageway is pour to the back, prefabricated post connected node still includes the end cap that is used for the hole upper end of shutoff connecting piece down.
The technical scheme of the connection method of the prefabricated column connection node based on the transfer block in the invention is as follows:
the method for connecting the prefabricated column connecting node comprises the following steps of firstly, lifting an upper prefabricated member on site, connecting a connecting piece between the upper prefabricated member and a lower connecting piece, ensuring the upper connecting plate and the lower connecting plate to be horizontal, and enabling the upper prefabricated member and the lower connecting piece to be vertical; connecting the steel bar sleeve between the corresponding angle upper prefabricated member steel bar and the angle lower connecting piece steel bar; thirdly, positioning the periphery of the upper prefabricated member and the periphery of the lower connecting member, and building a template which is arranged on the periphery of the connecting member in a surrounding manner; and fourthly, injecting post-cast materials into the post-cast channel, wherein the post-cast materials flow to the post-cast cavity of the upper prefabricated member, the post-cast cavity in the middle of the connecting piece, the post-cast cavity of the connecting piece in the radial direction and the post-cast cavity of the lower connecting piece, and the post-cast materials are solidified to form post-cast concrete which forms an integral structure with the upper prefabricated member, the transfer block and the lower connecting piece.
The beneficial effects of the invention are as follows: according to the invention, in a construction site, an upper prefabricated member and a lower connecting member are connected through the connecting member, no embedded part is required to be arranged in the upper prefabricated member and the lower connecting member, threads are only required to be arranged at the lower end of an upper prefabricated member reinforcing steel bar, threads are arranged at the upper end of a lower connecting member reinforcing steel bar, connection between the upper connecting plate and the upper prefabricated member reinforcing steel bar can be realized through an upper connecting plate fixing nut, connection between the lower connecting plate and the lower connecting member is realized through a lower connecting plate fixing nut, then grouting casting is carried out by utilizing a rear casting channel on the upper prefabricated member and/or the lower connecting member, casting liquid enters into a rear casting cavity of the upper prefabricated member, a rear casting cavity of the connecting member in the radial direction and a rear casting cavity of the lower connecting member along the rear casting channel, a shearing-resistant structure is formed in the rear casting cavity of the upper prefabricated member and the rear casting cavity of the lower connecting member, and the casting liquid can be connected into an integral structure after passing through the rear casting cavity of the connecting member in the radial direction, so that connection quality is ensured.
Drawings
The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to like or corresponding parts and in which:
FIG. 1 is a schematic diagram of one embodiment of a preform column connection node of the present invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a schematic view of the structure of the connector of FIG. 1;
FIG. 4 is a schematic view of the structure of the upper preform of FIG. 1;
FIG. 5 is a schematic view of the process of building templates outside of connectors in the present invention;
FIG. 6 is a schematic illustration of the connection of the connector to the upper preform and lower connector of the present invention;
FIG. 7 is an exploded view of FIG. 6;
reference numerals illustrate:
1. a top preform; 2. a lower connecting piece; 3. a connecting piece; 4. a prefabricated member reinforcement bar is arranged; 5. a lower connecting plate fixing nut; 6. an external thread; 7. punching holes on the upper connecting plate bolts; 8. a lower connecting plate channel; 9. pouring a cavity after the connecting piece is radial; 10. grouting a flow channel; 11. leveling the cushion layer by the connecting plate; 12. a reinforcing bar sleeve; 13. a pulp outlet hole; 14. an inner hole of the upper prefabricated member; 15. pouring the cavity after the prefabricated member is arranged; 16. a plug; 17. a template; 18. a column hoop; 19. adjusting the buckle; 20. post-pouring concrete; 21. an upper connecting plate; 22. a lower connecting plate; 23. a connection structure; 24. a vertical plate; 25. punching a lower connecting plate bolt; 26. an upper connecting plate channel; 27. pouring a cavity after the middle of the connecting piece; 28. a lower connecting piece reinforcing steel bar; 29. pouring the cavity after the connecting piece is arranged; 30. an upper connecting plate fixing nut; 31. the upper connecting plate levels the nut.
Detailed Description
In order that the invention may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
An embodiment of a prefabricated column connection node based on a transfer block in the present invention is shown in fig. 1 to 7: the prefabricated member comprises an upper prefabricated member 1, a lower connecting piece 2 and a transfer block connected between the upper prefabricated member and the lower connecting piece, wherein the upper prefabricated member in the embodiment is an upper prefabricated column, the lower connecting piece is a lower prefabricated column, and the upper prefabricated column and the lower prefabricated column have the same structure.
The upper prefabricated member 1 comprises an upper prefabricated member steel bar 4 and upper prefabricated member concrete which is poured into an integral structure with the upper prefabricated member steel bar, and the lower connecting piece 2 comprises a lower connecting piece steel bar 28 and lower connecting piece concrete which is poured into an integral structure with the lower connecting piece steel bar 28, wherein the upper prefabricated member steel bar 4 and the lower connecting piece steel bar 28 are vertically arranged.
The adapter includes a connector and post-cast concrete 20, which in this embodiment is post-cast as opposed to prefabricated, the prefabricated being finished at the factory and cast in place.
The connecting piece comprises an upper connecting plate 21, a lower connecting plate 22 and four connecting structures 23 which are connected between the upper connecting plate and the lower connecting plate along the circumferential direction, and the upper connecting plate and the lower connecting plate are square structures. Each connecting structure comprises four vertical plates 24 which are distributed radially by taking a vertical central line as a center, and C-shaped grooves are formed in the outer side surfaces of the vertical plates, and form a grouting circulation channel 10. The vertical plates distributed in a radial manner can be well combined with the post-cast concrete, so that acting force between the vertical plates and the post-cast concrete in all directions is guaranteed, and the connecting structure 23, the upper connecting plate 21 and the lower connecting plate 22 are integrally cast and formed. In the embodiment, in each vertical plate of the upper connecting plate, the lower connecting plate and the connecting structure, the outward protruding width of the corresponding plate is b, the thickness of the plate is t, and b/t is less than or equal to 13 (235/fy) 0.5. For the connecting structure, four vertical plate structures which are distributed radially are adopted, so that the minimum material consumption can be met, the internal force transmission between the upper prefabricated column and the lower prefabricated column can be realized, the materials can be saved, and the post-pouring material can be conveniently poured, namely, the flow and compaction of post-pouring concrete can be realized.
An upper connecting plate bolt through hole 7 which is arranged corresponding to the upper prefabricated member steel bar is arranged on the periphery of the connecting structure on the upper connecting plate 21, a lower connecting plate bolt through hole 25 which is arranged corresponding to the lower connecting member steel bar is arranged on the periphery of the connecting structure on the lower connecting plate, the lower ends of the upper prefabricated member steel bars are respectively penetrated in the corresponding upper connecting plate bolt through holes, and an upper connecting plate fixing nut 30 is connected on the upper prefabricated member steel bars on the lower side of the upper connecting plate in a threaded manner; the upper ends of the lower connecting piece reinforcing steel bars are respectively penetrated in the corresponding lower connecting plate bolt through holes, and the lower connecting piece reinforcing steel bars are connected with lower connecting plate fixing nuts 5 on the upper sides of the upper connecting plates in a threaded manner. That is, the lower end of the upper prefabricated member steel bar is provided with an external thread 6, and the upper end of the lower connecting member steel bar is provided with an external thread.
The four upper prefabricated member steel bars are corner upper prefabricated member steel bars distributed at four corner positions of the upper connecting plate, the four lower connecting member steel bars are corner lower connecting member steel bars distributed at four corner positions of the lower connecting plate, the corner lower connecting member steel bars are respectively arranged coaxially with the corresponding upper prefabricated member steel bars, the adapter block further comprises a steel bar sleeve 12 which is connected between the corner upper prefabricated member steel bars and the corresponding corner lower connecting member steel bars in a threaded mode, the steel bar sleeve 12 is provided with upper connecting threads which are connected with the corner upper prefabricated member steel bars in a threaded mode and lower connecting threads which are connected with the corner lower connecting member steel bars in a threaded mode, and the threads of the upper connecting threads and the lower connecting threads are opposite in screwing direction.
The lower end face of the upper prefabricated member is provided with an upper prefabricated member rear pouring cavity 15 with a small upper part and a large lower part, the upper end face of the lower connecting member is provided with a lower connecting member rear pouring cavity 29 with a small lower part and a large upper part, and in the embodiment, the upper prefabricated member rear pouring cavity is in a golden tower shape, and the lower connecting member rear pouring cavity is in an inverted golden tower shape. The connecting structures are surrounded to form a connecting piece middle rear pouring cavity 27, an upper connecting plate channel 26 which is communicated with the upper prefabricated piece rear pouring cavity and the connecting piece middle rear pouring cavity is formed in the upper connecting plate, and the upper connecting plate channel 26 is formed by a through hole penetrating through the upper connecting plate along the up-down direction. The lower connecting plate is provided with a lower connecting plate channel which is communicated with the lower connecting piece rear pouring cavity and the connecting piece middle rear pouring cavity, and a connecting piece radial rear pouring cavity 9 which is communicated with the connecting piece middle rear pouring cavity and the connecting piece radial rear pouring cavity for the upper connecting plate fixing nut and the lower connecting plate fixing nut is formed between the two adjacent connecting structures in the circumferential direction. In this embodiment, the radial rear pouring cavity of the connecting piece is defined between adjacent C-shaped grooves of two adjacent vertical plates in the circumferential direction.
The upper prefabricated member and the lower connecting piece are hollow structures, an inner hole 14 of the upper prefabricated member forms a rear pouring channel, and a slurry outlet hole 13 is further formed in the upper side of the connecting piece on the upper prefabricated member. The transfer block further comprises a post-cast concrete 20 which is cast in the post-cast channel, the post-cast cavity of the upper prefabricated member, the post-cast cavity of the middle of the connecting member, the post-cast cavity of the connecting member in the radial direction and the post-cast cavity of the lower connecting member, and forms an integral structure with the upper prefabricated member, the transfer block and the lower connecting member. The precast column connection node further comprises a plug 16 for plugging the upper end of the inner bore of the lower connection member.
The corresponding upper prefabricated member steel bars are connected with upper connecting plate leveling nuts 31 on the upper sides of the upper connecting plates in a threaded manner, at least three upper connecting plate leveling nuts are arranged, and the upper connecting plate leveling nuts are arranged at intervals along the circumferential direction. A lower connecting plate leveling cushion layer 11 is arranged between the lower connecting plate and the upper end surface of the lower connecting piece, and the lower connecting plate leveling cushion layer can be a concrete layer.
When the connecting piece, the upper prefabricated member and the lower connecting piece are all prefabricated and processed in factories, one prefabricated member is required to be connected from bottom to top on a construction site, when two adjacent prefabricated members are connected, the upper end of the lower connecting piece is adjusted to be flat through the leveling cushion layer of the lower connecting plate, the lower connecting plate of the connecting piece is sleeved on the lower connecting piece reinforcing steel bar of the lower connecting piece, and the lower connecting plate and the lower connecting piece are connected through the fixing nut of the lower connecting plate. And lifting the upper prefabricated member, penetrating the upper prefabricated member steel bars of the upper prefabricated member into corresponding upper connecting plate bolt holes, adjusting the upper prefabricated member to be vertical through an upper connecting plate leveling nut, keeping the verticality of the upper prefabricated member and a lower connecting piece, connecting the upper connecting plate and the upper prefabricated member through an upper connecting plate fixing nut, and rotating a steel bar sleeve to enable the upper prefabricated member steel bars at the corners of the upper connecting plate and the lower connecting plate to be connected with the lower connecting piece steel bars.
And then grouting downwards through the upper end of the inner hole of the upper prefabricated member, pouring the cavity after the post-pouring material flows to the upper prefabricated member through the inner hole of the upper prefabricated member, pouring the cavity after the middle of the connecting member, and pouring the cavity after the post-pouring material flows to the radial rear of the connecting member and pouring the cavity after the connecting member, wherein the radial rear of the connecting member flows to the peripheries of the upper connecting plate and the lower connecting plate of the connecting member. And the post-cast material is solidified to form post-cast concrete with an integral structure of the upper prefabricated member, the switching block and the lower connecting piece.
Compared with the prior art, the invention has the following advantages:
1. the upper prefabricated column and the lower prefabricated column are connected through the connecting piece and the steel bar sleeve in a bolt manner during construction, load can be borne immediately after connection is completed, lateral temporary support is not needed, construction efficiency is high, and temporary support cost is reduced.
2. According to the invention, the upper prefabricated column and the lower prefabricated column are connected through the connecting piece and the steel bar sleeve in a bolt manner during construction, and the connection quality of the prefabricated column connecting joint of the fabricated concrete structure can be ensured without using grouting sleeve steel bar connection.
3. The upper prefabricated column and the lower prefabricated column do not need extra embedded parts when being prefabricated in a factory, which is beneficial to saving the manufacturing cost of the components, reducing the factory prefabrication difficulty and improving the production efficiency of the prefabricated column components.
4. The upper prefabricated column and the lower prefabricated column are prefabricated hollow columns, so that the dead weight of the prefabricated columns is reduced, the transportation and the hoisting are convenient, and the pouring of post-pouring materials of the prefabricated column nodes is also facilitated; meanwhile, the high-strength materials can be post-poured on the upper prefabricated column and the lower prefabricated column according to the stress condition, so that the bearing capacity of the prefabricated columns and the connecting nodes is improved.
5. According to the invention, the reinforcing steel bar sleeve is additionally arranged at the corner position of the connecting piece to carry out threading connection on the reinforcing steel bar extension sections of the upper prefabricated column and the lower prefabricated column, so that the excessive deformation of the steel plate at the corner position of the connecting piece is effectively limited, and the large crack of post-cast concrete at the joint of the later stage is avoided.
6. According to the invention, shear keys are formed in the core area of the prefabricated column connecting node after pouring of a pouring chamber formed by the free part of the joint and the rear pouring cavity of the upper prefabricated member at the bottom of the upper prefabricated column and the rear pouring cavity of the lower connecting piece at the top of the lower prefabricated column, so that the shear bearing capacity of the prefabricated column connecting node is improved.
7. According to the post-cast material, different materials such as common concrete, high-ductility concrete, ultra-high-performance concrete and the like can be selected according to the stress of the joints, so that the strength of the connecting joints of the prefabricated columns is further enhanced, and the bearing capacity of the connecting joints of the prefabricated columns is improved.
8. The invention can lead the connecting piece to be damaged before the prefabricated column when the connecting piece is damaged by adjusting the thickness and the connecting strength of the connecting piece so as to realize the restorability of the structure function, lead the structure to be easy to build and maintain and have high cost efficiency in the whole service life.
9. The invention is mainly applied to the connection of the prefabricated column and the prefabricated column, can also be used for the connection of the column and the prefabricated column foundation, and has high practical value and popularization value.
An embodiment of a connection method of a prefabricated column connection node based on a transfer block is shown in fig. 1 to 7: the method comprises the following steps of firstly, lifting an upper prefabricated member on site, placing a connecting piece between the upper prefabricated member and a lower connecting piece, ensuring the upper connecting plate and the lower connecting plate to be horizontal, and enabling the upper prefabricated member and the lower connecting piece to be vertical; connecting the steel bar sleeve between the corresponding angle upper prefabricated member steel bar and the angle lower connecting piece steel bar; thirdly, positioning the periphery of the upper prefabricated member and the periphery of the lower connecting member, and building a template which is arranged on the periphery of the connecting member in a surrounding manner; and fourthly, injecting post-cast materials into the post-cast channel, wherein the post-cast materials flow to the post-cast cavity of the upper prefabricated member, the post-cast cavity in the middle of the connecting piece, the post-cast cavity of the connecting piece in the radial direction and the post-cast cavity of the lower connecting piece, and the post-cast materials are solidified to form post-cast concrete which forms an integral structure with the upper prefabricated member, the transfer block and the lower connecting piece.
The process of building the form shown in fig. 5, i.e. four forms 17 are placed on the four sides of the upper and lower prefabricated columns, respectively, and then the forms are fixed by means of the ferrules 18 and the adjusting buckles 19.
In the foregoing description of the present specification, the terms "fixed," "mounted," "connected," or "connected" are to be construed broadly, unless explicitly stated or limited otherwise. For example, in terms of the term "coupled," it may be fixedly coupled, detachably coupled, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other. Therefore, unless otherwise specifically defined in the specification, a person skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.
Those skilled in the art will also appreciate from the foregoing description that terms such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "transverse," "clockwise," or "counterclockwise" and the like are used herein for the purpose of facilitating description and simplifying the description of the present invention, and thus do not necessarily have to have, configure, or operate in, the specific orientations, and thus are not to be construed or construed as limiting the present invention.
In addition, the terms "first" or "second" and the like used in the present specification to refer to the numbers or ordinal numbers are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present specification, the meaning of "plurality" means at least two, for example, two, three or more, etc., unless explicitly defined otherwise.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. Prefabricated post connected node based on transfer piece, including last prefab and lower connecting piece, go up the prefab including go up the prefab reinforcing bar and pour into overall structure's last prefab concrete with last prefab reinforcing bar, lower connecting piece includes lower connecting piece reinforcing bar and pours into overall structure's lower connecting piece concrete with lower connecting piece reinforcing bar, goes up prefab reinforcing bar, the vertical arrangement of lower connecting piece reinforcing bar, its characterized in that: the connecting structure comprises an upper prefabricated member, a lower prefabricated member and at least four connecting structures, wherein the connecting structures are circumferentially connected between the upper connecting plate and the lower connecting plate; the upper ends of the lower connecting piece steel bars are respectively penetrated in corresponding lower connecting plate bolt holes, the lower connecting piece steel bars are connected with lower connecting plate fixing nuts on the upper side of the upper connecting plate in a threaded manner, an upper prefabricated member rear pouring cavity with a small upper part and a large lower part is formed on the lower end face of the upper prefabricated member, a lower connecting piece rear pouring cavity with a small lower part and a large upper part is formed on the upper end face of the lower connecting piece, a connecting piece middle rear pouring cavity is formed between each connecting structure, an upper connecting plate channel which is communicated with the upper prefabricated member rear pouring cavity and the connecting piece middle rear pouring cavity is formed on the upper connecting plate, a lower connecting plate channel which is communicated with the lower connecting piece rear pouring cavity and the connecting piece middle rear pouring cavity is formed on the lower connecting plate, a connecting piece radial rear pouring cavity which is communicated with the connecting piece middle rear pouring cavity corresponding to the upper connecting plate fixing nuts and the lower connecting plate fixing nuts is formed between two adjacent connecting structures in the circumferential direction, the upper prefabricated member and the lower connecting piece are provided with rear pouring channels, the adapter block further comprises rear pouring concrete which is poured in the rear pouring channels, the rear pouring cavity of the upper prefabricated member, the rear pouring cavity of the middle of the connecting piece, the rear pouring cavity of the connecting piece, the lower connecting piece and the rear pouring concrete which forms an integral structure with the upper prefabricated member, the adapter block and the lower connecting piece, each connecting structure comprises four vertical plates which are radially distributed by taking a vertical central line as a center, the outer side surfaces of the vertical plates are respectively provided with a grouting circulation channel for the rear pouring concrete pouring molding, the upper prefabricated member and the lower connecting piece are hollow structures, the inner hole of the upper prefabricated member forms the rear pouring channel, the prefabricated column connecting node further comprises a plug for plugging the upper end of the inner hole of the lower connecting piece, the upper prefabricated member is an upper prefabricated column, the lower connecting piece is a lower prefabricated column, the outer side surfaces of the vertical plates are provided with C-shaped grooves, the C-shaped grooves form the grouting circulation channels, the radial rear pouring cavity of the connecting piece is surrounded by adjacent C-shaped grooves of two adjacent vertical plates in the circumferential direction.
2. The precast column connection node of claim 1, wherein: the corresponding upper prefabricated member steel bars are connected with upper connecting plate leveling nuts on the upper sides of the upper connecting plates in a threaded manner, at least three upper connecting plate leveling nuts are arranged, and the upper connecting plate leveling nuts are arranged at intervals along the circumferential direction.
3. The precast column connection node of claim 1, wherein: a lower connecting plate leveling cushion layer is arranged between the lower connecting plate and the upper end surface of the lower connecting piece.
4. The precast column connection node of claim 1, wherein: the upper connecting plate and the lower connecting plate are square plate structures, wherein four upper prefabricated member steel bars are corner upper prefabricated member steel bars distributed at four corner positions of the upper connecting plate, four lower connecting member steel bars are corner lower connecting member steel bars distributed at four corner positions of the lower connecting plate, the corner lower connecting member steel bars are respectively arranged coaxially with the corresponding upper prefabricated member steel bars, the adapter block further comprises a steel bar sleeve in threaded connection between the corner upper prefabricated member steel bars and the corresponding corner lower connecting member steel bars, the steel bar sleeve is provided with upper connecting threads for realizing threaded connection with the corner upper prefabricated member steel bars and lower connecting threads for realizing threaded connection with the corner lower connecting member steel bars, and the threads of the upper connecting threads and the lower connecting threads are opposite in screwing direction.
5. The precast column connection node of claim 1, wherein: the upper connecting plate, the lower connecting plate and the connecting structure are integrally cast and formed.
6. A method of connecting a prefabricated pillar connecting node according to any one of claims 1 to 5, characterized in that: the method comprises the following steps of firstly, lifting an upper prefabricated member on site, placing a connecting piece between the upper prefabricated member and a lower connecting piece, ensuring the upper connecting plate and the lower connecting plate to be horizontal, and enabling the upper prefabricated member and the lower connecting piece to be vertical; connecting the steel bar sleeve between the corresponding angle upper prefabricated member steel bar and the angle lower connecting piece steel bar; thirdly, positioning the periphery of the upper prefabricated member and the periphery of the lower connecting member, and building a template which is arranged on the periphery of the connecting member in a surrounding manner; and fourthly, injecting post-cast materials into the post-cast channel, wherein the post-cast materials flow to the post-cast cavity of the upper prefabricated member, the post-cast cavity in the middle of the connecting piece, the post-cast cavity of the connecting piece in the radial direction and the post-cast cavity of the lower connecting piece, and the post-cast materials are solidified to form post-cast concrete which forms an integral structure with the upper prefabricated member, the transfer block and the lower connecting piece.
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| CN202210457848.1A CN114753490B (en) | 2022-04-27 | 2022-04-27 | Prefabricated column connecting node based on adapter block and connecting method |
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| CN202210457848.1A CN114753490B (en) | 2022-04-27 | 2022-04-27 | Prefabricated column connecting node based on adapter block and connecting method |
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| CN114753490B true CN114753490B (en) | 2024-03-29 |
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| JP2007186983A (en) * | 2005-12-15 | 2007-07-26 | Takenaka Komuten Co Ltd | Column joint structure such as reinforced concrete column |
| KR100987762B1 (en) * | 2010-04-12 | 2010-10-13 | (주) 다우와키움건설 | Joint structure of vertical member and andhorizontal member |
| CN110952659A (en) * | 2019-12-23 | 2020-04-03 | 三一筑工科技有限公司 | Prefabricated column node connecting structure and construction method |
| CN112112264A (en) * | 2020-08-18 | 2020-12-22 | 中建三局绿色产业投资有限公司 | Prefabricated column connecting joint for dry connection and construction method |
| CN113236006A (en) * | 2021-05-25 | 2021-08-10 | 天津城建大学 | Novel assembled concrete column connected node |
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2022
- 2022-04-27 CN CN202210457848.1A patent/CN114753490B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007186983A (en) * | 2005-12-15 | 2007-07-26 | Takenaka Komuten Co Ltd | Column joint structure such as reinforced concrete column |
| KR100987762B1 (en) * | 2010-04-12 | 2010-10-13 | (주) 다우와키움건설 | Joint structure of vertical member and andhorizontal member |
| CN110952659A (en) * | 2019-12-23 | 2020-04-03 | 三一筑工科技有限公司 | Prefabricated column node connecting structure and construction method |
| CN112112264A (en) * | 2020-08-18 | 2020-12-22 | 中建三局绿色产业投资有限公司 | Prefabricated column connecting joint for dry connection and construction method |
| CN113236006A (en) * | 2021-05-25 | 2021-08-10 | 天津城建大学 | Novel assembled concrete column connected node |
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| CN114753490A (en) | 2022-07-15 |
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