CN113638489B - RC beam column node can be dismantled to assembled - Google Patents
RC beam column node can be dismantled to assembled Download PDFInfo
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- CN113638489B CN113638489B CN202110918673.5A CN202110918673A CN113638489B CN 113638489 B CN113638489 B CN 113638489B CN 202110918673 A CN202110918673 A CN 202110918673A CN 113638489 B CN113638489 B CN 113638489B
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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
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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
- E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
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Abstract
The invention discloses an assembled detachable RC beam-column joint which comprises a prefabricated column and a prefabricated beam, wherein an embedded member is arranged on the prefabricated column, the prefabricated column and the embedded member are cast into a whole through concrete, the prefabricated beam is fixed with the prefabricated column through the embedded member, a bayonet plate is arranged at the end part of the embedded member, which faces the prefabricated beam, a connecting piece is arranged at the end part of the prefabricated beam, which faces the embedded member, a bayonet plate matched with the bayonet plate is arranged on the connecting piece, and when the prefabricated beam is installed, the bayonet plate and the bayonet plate are tightly connected in an engaged manner, and the prefabricated beam and the embedded member are fixed through bolts. The concrete prefabricated parts are connected through the buckle type parts, and the high-strength bolt is used for reinforcement. Convenient operation can dismantle secondary utilization and rate is higher, and the later stage overhauls and changes the convenience, need not the secondary and pours not hidden engineering.
Description
Technical Field
The invention relates to the field of buildings, in particular to an assembled detachable RC beam column node.
Background
The prefabricated Concrete Structure is from the English "Precast Concrete Structure", abbreviated as "PC" Structure, and is a Concrete Structure assembled by Precast Concrete members in a reliable connection manner.
The assembled structure is one of important directions of building development, is the continuation of three basic requirements of safety, applicability and durability of the traditional building, and is the centralized embodiment of high efficiency, energy conservation and environmental protection. Referring to the history of urbanization in the world, people can easily find that the realization of the urbanization usually needs to sacrifice the ecological environment and consume a large amount of manpower and material resources, and with the rapid coming of the urbanization in our country in recent years, the sustainable development is comprehensively considered, and the novel urbanization, industrialization and informatization become core problems discussed by researchers. At present, the building industry in China still has extensive traditional building modes with high pollution, high energy consumption and low efficiency, and has a great gap with the building of novel urbanized, industrialized and informationized buildings. And the construction industry is still a labor-intensive industry which is contrary to the current trend that China is increasingly aged. Therefore, the traditional building mode is quickened to be changed, and a brand new building mode is sought to become a problem which is urgently needed to be solved in China. The development of a novel building model with a detachable assembly type as a core is an inevitable requirement for realizing sustainable development.
In the traditional field construction, quality accidents happen occasionally due to the fact that workers are uneven in quality. The assembled building components are produced in a prefabrication factory, conditions such as temperature, humidity and the like can be controlled in the production process, and the quality of the components is easier to guarantee. Most of the traditional construction is outdoor operation and high-altitude operation, and great potential safety hazards exist. After the assembled components are transported to the site, the assembled components are assembled by a professional installation team strictly following the flow, so that the engineering quality is greatly improved, and the potential safety hazard is reduced. The components of the assembly type building are produced in batches by adopting steel moulds in a prefabricating factory, so that the quantity of scaffolds and templates is reduced, the production cost is saved, and the advantages are more obvious especially when the components with more complex shapes are produced; meanwhile, a corresponding construction flow is omitted, and the time utilization rate is greatly improved. At present, the traditional construction mode is difficult to continue due to the shortage of labor force, the shortage of technicians, the large overall age of workers and the rising of cost in the building industry in China. The prefabricated building is constructed in a prefabricated factory, the prefabricated building is assembled on site, the degree of mechanization is high, the number of field construction and management personnel is small, considerable labor cost can be saved, and the labor productivity is improved. The assembled building has remarkable circular economic characteristics, and a large amount of scaffolds and wood templates are saved and resources are saved due to factory prefabrication and the adoption of recyclable steel templates. In addition, because the components are manufactured in a factory, the field wet operation is less, and the noise pollution and the air pollution are greatly reduced. When the assembly type building is used for building design, the house type is optimized firstly, and modular design and production are carried out on the basis of selecting the house type. The design mode greatly improves the production efficiency and is particularly suitable for large-scale standardized construction. In addition, a flexible structural form is adopted, the internal space of the house can be further improved, and the service life of the house is prolonged.
At present, the emphasis of the earthquake resistance research of the domestic fabricated building is on the node, the earthquake resistance performance of the fabricated building node is different from that of a cast-in-place node, and the mechanical property of the fabricated building node has a large influence on the whole earthquake resistance performance of the building. The design principle of 'strong column and weak beam, strong shear and weak bending, and strong node and weak member' can be fully exerted, so that three standards of 'small-earthquake undamaged, medium-earthquake repairable and large-earthquake tumbler' are realized, and two-stage requirements of elastic design of large earthquake lines in small-earthquake elastic design are met.
The main connection mode has dry connection and wet connection, and dry connection does not need concreting, and the joint connection is mainly completed through welding of steel plates and steel parts pre-buried in the members and high-strength bolts. Wet joints, i.e. joints in which concrete or grout is poured to anchor the joints, such as beam-to-column joints. Wherein wet connections are the primary connection means for existing fabricated building node connections. But have the exposed condition of partial reinforcing bar in prefabricated component, the easy corrosion of reinforcing bar and damage have higher requirement to transportation and deposit, and sleeve grout belongs to concealed engineering, under the normal conditions, whether there is the grout to flow through the hole of observing slip casting hole upper portion during the sleeve grout, judges whether the slip casting is accomplished, but the full degree of inside actual slip casting can't know. If the sleeve is not carefully cleaned before grouting, impurities still exist, so that grouting insufficiency can be caused, and the connection strength is seriously influenced.
Disclosure of Invention
The invention aims to solve the technical problem of providing an assembly type detachable RC beam column node, wherein a prefabricated column and a prefabricated beam of the structure are connected in an assembly type mode, and dry connection and wet connection are combined, so that the assembly type detachable RC beam column node is convenient to install in the early stage, convenient to operate, high in detachable secondary utilization rate, convenient to overhaul and replace in the later stage, and greatly improves the working efficiency.
Therefore, the assembly type detachable RC beam-column node provided by the invention comprises a precast column and a precast beam, wherein the precast column is provided with an embedded member, the precast column and the embedded member are cast into a whole through concrete, the precast beam is fixed with the precast column through the embedded member, the end part of the embedded member, which faces the precast beam, is provided with a bayonet plate, the end part of the precast beam, which faces the embedded member, is provided with a connecting piece, the connecting piece is provided with a bayonet plate matched with the bayonet plate, and when the precast beam is installed, the bayonet plate and the bayonet plate are tightly connected in an engaged manner, and the precast beam and the embedded member are fixed through bolts.
Preferably, evenly be provided with a plurality of nail form archs on the bayonet socket board, the draw-in groove board sets up a plurality of draw-in grooves that correspond and the adaptation with nail form arch, nail form arch includes protruding tip and block portion, block portion set up with between protruding tip and the bayonet socket board, block portion and draw-in groove adaptation, protruding tip diameter are greater than the draw-in groove diameter, block portion card is gone into in the draw-in groove, makes the tight interlock of bayonet socket board and draw-in groove board.
Preferably, the precast column comprises a steel bar framework and a concrete pouring layer, the steel bar framework comprises longitudinal bars and stirrups for connecting the longitudinal bars, the embedded member comprises an embedded part body and an anchoring member, a member connecting plate is fixed at the outer end of the embedded part body and connected with a bayonet plate, the stirrups of the vertical fixed members of the embedded part body are welded and anchored through anchoring hooks between the longitudinal bars and the member stirrups, the anchoring member is arranged inside the embedded part body, the precast column and the embedded member are poured into a whole through the concrete pouring layer, and the steel bar framework, the anchoring member and the member stirrups are poured into the concrete pouring layer.
Preferably, the anchor component includes many inserts, the insert is cylindrical rod iron, the tip that the component connecting plate was kept away from to cylindrical rod iron sets up the anchor board, the anchor board is two cylinders that the diameter is different again, and the anchor board diameter is greater than cylinder stick diameter, the intensity of anchor board reinforced concrete pouring layer and pre-buried component.
Preferably, the component connecting plate is provided with a plurality of first bolt holes corresponding to the bayonet plate, the connecting piece is provided with a plurality of second bolt holes corresponding to the clamping groove plate, the first bolt holes correspond to the second bolt holes one to one, when the prefabricated beam and the embedded component are installed, the clamping groove plate is connected with the bayonet plate in a tight and meshed mode, the bolts sequentially penetrate through the first bolt holes and the second bolt holes, and the prefabricated beam is connected with the embedded component in a tight and meshed mode through the bolts.
Preferably, the height of the front end part of the embedded part body is lower than that of other parts of the embedded part, a step surface is formed between the outer side of the front end part of the embedded part and the rear end of the embedded part, the member connecting plate is fixed on the outer side of the front end part of the embedded part, and a space between the step surface and the member connecting plate provides an installation space for the bolt.
Preferably, the connecting part of the precast beam and the connecting piece is of a special-shaped section, the height of the front end part of the precast beam is lower than that of the rear end of the precast beam, a step surface is formed between the front end part of the precast beam and the outer side of the rear end part of the precast beam, and the space between the step surface and the connecting piece provides an installation space for the bolt.
The invention has the beneficial effects that:
1. the prefabricated concrete beam column members in the factory are adopted, so that the time utilization rate and the labor productivity are improved on the premise of ensuring the construction quality and reducing the potential safety hazard, the resources are saved, the environment is protected, and the service life of the building is prolonged.
2. Prefabricated in advance through the mill, prefabricated post adopts the assembled with the precast beam to be connected, makes site operation convenient and fast more, need not the secondary and pours. The connection form of the disassembly and assembly integration and the connection reliability is realized. The detachable application has historical significance to the later maintenance and overhaul and secondary utilization of the building.
3. The vertical connection mode of beam column direct connection is converted into connection between horizontal sections, and the concrete prefabricated parts are connected through the buckle type components and reinforced by the high-strength bolts. Convenient operation can dismantle secondary utilization and rate is higher, and the later stage overhauls and changes the convenience, need not the secondary and pours not hidden engineering.
4. Can zonulae occludens need not plus the measure through bayonet socket board and draw-in groove board and can form considerable joint strength, assemble the in-process and only need hoist and mount, the position is corrected and can be accomplished the connection. Can accomplish the connection of high strength bolt alone by the workman after accomplishing buckle mechanical connection, efficiency is higher. The disassembly is also convenient and can be completed only by disassembling the high-strength bolt and hoisting the precast beam.
Drawings
FIG. 1 is a schematic view of a partial cross-sectional structure of an assembled detachable RC beam-column joint according to the present invention;
FIG. 2 is an exploded view of the assembled demountable RC beam-column joint of FIG. 1;
FIG. 3 is a partial schematic structural view of an assembled demountable RC beam-column joint of FIG. 2;
FIG. 4 is a schematic structural diagram of a bayonet plate of the assembled demountable RC beam-column joint of FIG. 3;
FIG. 5 is a schematic structural view of a slot plate of the assembled demountable RC beam-column joint in FIG. 3;
fig. 6 is a schematic structural diagram of a member connecting plate and a connecting member 5 of an assembled detachable RC beam column node in fig. 3.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments in the patent of the invention without any inventive work belong to the protection scope of the patent of the invention.
Referring to fig. 1-3, the invention provides an assembly type detachable RC beam-column node, which comprises a precast column 1 and a precast beam 2, wherein an embedded member 3 is arranged on the precast column 1, the embedded member 3 is perpendicular to the precast column 1, the precast column 1 and the embedded member 3 are cast into a whole through concrete, and the precast beam 1 is fixed with the precast column 1 through the embedded member 3. When the precast beam is installed, the precast beam 2 is connected with the embedded component 3 in a horizontal mode, and the installation on site is facilitated. The connection mode of the beam and the column is converted from the original vertical connection mode into the connection between horizontal sections, and the problem that the vertical connection mode is high in installation difficulty is solved. The precast beam 2 is connected with the embedded component 3 in a horizontal mode, and the installation on site is convenient. The concrete prefabricated parts are connected through the buckle type parts, and the high-strength bolt is used for reinforcement. Convenient operation can dismantle secondary utilization and rate is higher, and the later stage overhauls and changes the convenience, need not the secondary and pours not hidden engineering. The problem of traditional assembled beam column adopt cast in place's mode, work efficiency is low is solved.
The end part of the embedded member 3 facing the precast beam is provided with a bayonet plate 4, the embedded member 3 comprises an embedded part body 10 and an anchoring member 11, a member connecting plate 12 is fixed at the outer end part of the embedded part body 10, and the member connecting plate 12 is connected with the bayonet plate 4. The end part of the precast beam facing the embedded member 3 is provided with a connecting piece 5, and the connecting piece is provided with a clamping groove plate 6 matched with the bayonet plate. When the precast beam is installed, the clamping groove plate 6 is tightly engaged with the bayonet plate 4, and the precast beam and the embedded member are fixed through the bolts. The member connecting plate 12 and the connecting piece 5 are both composed of rectangular steel sheets 26 and H-shaped steel sheets 27.
Further, evenly be provided with a plurality of nail form archs 7 on the bayonet socket board 4, the draw-in groove 17 that draw-in groove board 6 set up a plurality of and correspond and the adaptation with nail form arch 7, nail form arch 7 includes protruding tip 8 and block portion 9, and block portion 9 sets up and between protruding tip 8 and the bayonet socket board 4, block portion 9 and draw-in groove 17 adaptation, 8 diameters of protruding tip are greater than the diameter of draw-in groove 17, block portion 9 card goes into draw-in groove 17, makes bayonet socket board 4 and the inseparable interlock of draw-in groove board 6. Through nail form arch 7 card in draw-in groove 17, realize bayonet plate 4 and draw-in groove board 6 and be connected, can zonulae occludens need not plus the measure through bayonet plate 4 and draw-in groove board 6 and can form considerable joint strength, assemble the in-process and only need hoist and mount, the position is corrected and can be accomplished the connection. Can accomplish the connection of high strength bolt alone by the workman after accomplishing buckle mechanical connection, efficiency is higher. The disassembly is also convenient, and the high-strength bolt is only required to be disassembled to hoist the precast beam.
Further, the component connecting plate 12 and the bayonet plate 4 are provided with a plurality of first bolt holes 13, the connecting piece and the bayonet plate are provided with a plurality of second bolt holes 14, the first bolt holes 13 correspond to the second bolt holes 14 one to one, when the prefabricated beam 2 and the embedded component 3 are installed, the bayonet plate 6 is tightly connected with the bayonet plate 4 in an engaged manner, bolts sequentially pass through the first bolt holes 13 and the second bolt holes 14, and the prefabricated beam 2 is tightly connected with the embedded component 3 through the bolts.
The front end of the embedded part body 10 is lower than other parts of the embedded part, the outer side of the front end of the embedded part and the rear end of the embedded part form a step surface, the member connecting plate 12 is fixed on the outer side of the front end of the embedded part, and a space between the step surface and the member connecting plate provides an installation space 16 for the bolt.
The connecting part of the precast beam 2 and the connecting piece is of a special-shaped section, the front end part of the precast beam is lower than the rear end of the precast beam, a step surface is formed at the outer sides of the front end part of the precast beam and the rear end part of the precast beam, the space between the step surface and the connecting piece provides an installation space 18 for the bolt, and the bolt installation space is convenient for the installation of the bolt.
Further, the prefabricated column 1 includes a steel-reinforced frame including a longitudinal bar 20 and a stirrup 21 coupling the longitudinal bar, and a concrete cast layer 19. The embedded part is characterized in that a component stirrup 22 is vertically fixed on the embedded part body 10, the longitudinal ribs 20 and the component stirrup 22 are welded and anchored through an anchoring hook 23, the anchoring component 23 is arranged inside the embedded part body 10, the prefabricated column 1 and the embedded component 3 are integrally poured on a concrete pouring layer 19, and the steel bar framework, the anchoring component 11 and the component stirrup 22 are poured in the concrete pouring layer.
Further, anchor component 11 includes many plug-ins, the plug-in components are cylindrical rod iron, the tip that the component connecting plate was kept away from to cylindrical rod iron sets up anchor plate 25, anchor plate 25 is two cylinders that the diameter is different again, and anchor plate diameter is greater than cylinder rod diameter, anchor plate reinforced concrete pouring layer and embedded component's intensity.
The precast column 1 and the embedded members 3 fixed on the precast column can be precast in advance in a factory, and the factory precast concrete beam column members are adopted, so that the time utilization rate and the labor productivity are improved on the premise of ensuring the construction quality and reducing the potential safety hazard, the resources are saved, the environment is protected, and the service life of the building is also prolonged.
Prefabricated in advance through the mill, prefabricated post 1 adopts the assembled with precast beam 2 to be connected, and the mode that combines together is connected with wet futilely, makes site operation convenient and fast more, need not the secondary and pours, has realized the dismouting integration and has connected reliable connection form. Simultaneously, detachable application has historical meaning to building later maintenance and overhaul and reutilization.
The preparation method of the assembly type detachable RC beam column node is characterized by comprising the following steps: the steps are as follows,
1) Preparing a steel bar framework of the prefabricated column, wherein longitudinal bars of the steel bar framework of the prefabricated column are composed of four corner bars and a plurality of middle steel bars and are welded and fixed through stirrups;
2) Preparing a steel bar framework of an embedded component, wherein the steel bar framework of the embedded component consists of a longitudinal bar and a plurality of component stirrups, and the component stirrups are fixed at the rear parts of the longitudinal bar;
3) An anchoring component is welded and fixed inside the embedded component steel bar framework, and a component connecting plate is fixed at the outer end part of the embedded component steel bar framework;
4) The reinforcement cage of the prefabricated column is arranged at the connecting section of the embedded component and is provided with stirrups for encryption;
5) The prefabricated column steel reinforcement framework is connected with the embedded component steel reinforcement framework, the part of the longitudinal reinforcement, which is not welded with the component stirrup, extends into the prefabricated column steel reinforcement framework, the middle upper longitudinal reinforcement extending into the longitudinal reinforcement in the prefabricated column steel reinforcement framework is bent downwards, the lower longitudinal reinforcement is bent upwards to form an anchoring hook structure with the bent end part, and the anchoring hook is welded and fixed with the prefabricated column steel reinforcement framework;
the beam column reinforcement ratio is the minimum reinforcement ratio, and the anchoring hook length is a straight section
Hook->
15d, the tail end is bent for 90 degrees, the beam column longitudinal bars and the stirrups are connected by binding lap joint, mechanical connection and welding, and the binding lap joint section is 1.3
Or 1.3>
Mechanically connecting, wherein the welding connection is 35d and is more than or equal to 500mm, and d is the smaller diameter of the two mutually connected steel bars; when the lengths of the connecting sections of different connecting reinforcements in the same component are different, the large values are taken, and the percentage of the lap joint of the longitudinal reinforcements in the same connecting section, namely the ratio of the cross section area of the longitudinal stressed reinforcements with the connecting joints in the section to the cross section area of all the longitudinal reinforcements is 50% when the reinforcements with the same lap diameter are overlapped. The connecting position of the longitudinal stress steel bar is suitable to avoid the beam end and column end encryption areas. The type and quality of the mechanical connection and the welded joint should comply with the regulations of the relevant national standards in force.
6) The method comprises the steps of erecting a pre-buried member steel bar framework and a pre-buried member steel bar framework outside formwork, and pouring a concrete layer, wherein the concrete layer is integrally poured between the pre-buried member steel bar framework and the pre-buried member steel bar framework, a prefabricated column and the pre-buried member are integrally poured by the concrete pouring layer, the steel bar framework, an anchoring member and the pre-buried member steel bar framework are poured in the concrete pouring layer, a member connecting plate is exposed out of the concrete pouring layer, the joint of the member connecting plate and the pre-buried member steel bar framework is fixed by the concrete layer, concrete is poured, temperature and humidity are controlled, reasonable curing conditions are controlled, cracks are avoided, and the strength reaches 75% or above;
7) A welding bayonet plate is fixed on the component connecting plate;
8) Preparing a precast beam, fixedly welding a connecting plate at the end of the precast beam after the precast beam is finished, and welding a clamping groove plate on the connecting plate;
9) The prefabricated beam is assembled on site, the slot clamping plates on the prefabricated beam are buckled with the bayonet plates on the embedded members, the prefabricated Liang Dazai is arranged on the prefabricated column to form mechanical connection with certain strength, the connecting position is finely adjusted to ensure that the high-strength bolt rod passes through the first bolt hole and the second bolt hole after the position is accurate, and the nut is screwed to prevent the beam column from being dislocated to influence the strength.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all the techniques and schemes belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the present patent application are considered to be within the scope of the present patent application by those of ordinary skill in the art without departing from the inventive concepts herein.
Claims (4)
1. The utility model provides a RC beam column node can be dismantled to assembled, characterized by: the prefabricated beam comprises a prefabricated column and a prefabricated beam, wherein an embedded member is arranged on the prefabricated column, the embedded member is perpendicular to the prefabricated column, the prefabricated column and the embedded member are cast into a whole through concrete, the prefabricated beam is fixed with the prefabricated column through the embedded member, a bayonet plate is arranged at the end part of the embedded member, which faces the prefabricated beam, a connecting piece is arranged at the end part of the prefabricated beam, which faces the embedded member, a bayonet plate matched with the bayonet plate is arranged on the connecting piece, and when the prefabricated beam is installed, the bayonet plate and the bayonet plate are tightly connected in an engaged manner, and the prefabricated beam and the embedded member are fixed through bolts;
the prefabricated column comprises a steel bar framework and a concrete pouring layer, the steel bar framework comprises longitudinal bars and stirrups for connecting the longitudinal bars, the embedded component comprises an embedded part steel bar framework, an anchoring component and a concrete pouring layer, a component connecting plate is fixed at the outer end of the embedded component and connected with a bayonet plate, the embedded part steel bar framework comprises anchoring hooks and component stirrups, the component stirrups are fixedly welded on the anchoring hooks, the anchoring hooks extend into the prefabricated column steel bar framework, the longitudinal bars and the anchoring hooks are welded and anchored, the prefabricated column steel bar framework and the embedded part steel bar framework are welded and anchored through the anchoring hooks, the anchoring component is arranged inside the embedded part steel bar framework, the prefabricated column concrete pouring layer and the embedded part concrete pouring layer are integrally poured, the prefabricated column and the embedded component are integrally poured by the concrete pouring layer, and the prefabricated steel bar framework, the anchoring component and the embedded part steel bars are poured in the pouring layer;
the bayonet plate is uniformly provided with a plurality of nail-shaped bulges, the slot plate is provided with a plurality of slots which correspond to and are matched with the nail-shaped bulges, the nail-shaped bulges comprise bulge end parts and clamping parts, the clamping parts are arranged between the bulge end parts and the bayonet plate, the clamping parts are matched with the slots, the diameters of the bulge end parts are larger than the diameters of the slots, and the clamping parts are clamped into the slots, so that the bayonet plate is tightly meshed with the slot plate;
the anchoring member comprises a plurality of inserts, the inserts are cylindrical steel bars, an anchoring plate is arranged at the end part, far away from the member connecting plate, of each cylindrical steel bar, the anchoring plate is composed of two cylinders with different diameters, the diameter of the anchoring plate is larger than that of each cylindrical bar, and the anchoring plate strengthens the strength of the concrete pouring layer and the embedded member;
the component connecting plate and the bayonet plate are respectively provided with a plurality of first bolt holes correspondingly, the connecting piece and the bayonet plate are respectively provided with a plurality of second bolt holes correspondingly, the first bolt holes and the second bolt holes correspond one to one, when the prefabricated beam and the embedded component are installed, the bayonet plate and the bayonet plate are tightly meshed and connected, bolts sequentially pass through the first bolt holes and the second bolt holes, and the prefabricated beam and the embedded component are tightly connected through the bolts;
the front end part of the embedded part body is lower than other parts of the embedded part, a step surface is formed on the outer side of the front end part of the embedded part and the rear end of the embedded part, the component connecting plate is fixed on the outer side of the front end part of the embedded part, a mounting space is provided for the bolt by the space between the step surface and the component connecting plate, the connecting part of the precast beam and the connecting piece is in a special-shaped cross section, the front end part of the precast beam is lower than the rear end of the precast beam, the front end part of the precast beam and the outer side of the rear end part of the precast beam form a step surface, and the step surface and the space of the connecting piece provide a mounting space for the bolt.
2. The fabricated demountable RC beam-column joint of claim 1, wherein: the member connecting plate and the connecting piece are both composed of rectangular steel sheets and H-shaped steel sheets.
3. The method for manufacturing the assembled detachable RC beam-column joint based on claim 1 is characterized in that: the steps are as follows,
1) Preparing a steel bar framework of the prefabricated column, wherein longitudinal bars of the steel bar framework of the prefabricated column are composed of four corner bars and a plurality of middle steel bars and are welded and fixed through stirrups;
2) Preparing a steel bar framework of an embedded component, wherein the steel bar framework of the embedded component consists of a longitudinal bar and a plurality of component stirrups, and the component stirrups are fixed at the rear parts of the longitudinal bar;
3) An anchoring component is welded and fixed inside the embedded component steel bar framework, and a component connecting plate is fixed at the outer end part of the embedded component steel bar framework;
4) The reinforcement cage of the prefabricated column is arranged at the connecting section of the embedded component and is provided with stirrups for encryption;
5) The prefabricated column steel reinforcement framework is connected with the embedded component steel reinforcement framework, the part of the longitudinal reinforcement, which is not welded with the component stirrup, extends into the prefabricated column steel reinforcement framework, the middle upper longitudinal reinforcement extending into the longitudinal reinforcement in the prefabricated column steel reinforcement framework is bent downwards, the lower longitudinal reinforcement is bent upwards to form an anchoring hook structure with the bent end part, and the anchoring hook is welded and fixed with the prefabricated column steel reinforcement framework;
6) The method comprises the steps of erecting a pre-buried member steel bar framework and a pre-buried member steel bar framework outside formwork, and pouring a concrete layer, wherein the concrete layer is integrally poured between the pre-buried member steel bar framework and the pre-buried member steel bar framework, a prefabricated column and the pre-buried member are integrally poured by the concrete pouring layer, the steel bar framework, an anchoring member and the pre-buried member steel bar framework are poured in the concrete pouring layer, a member connecting plate is exposed out of the concrete pouring layer, the joint of the member connecting plate and the pre-buried member steel bar framework is fixed by the concrete layer, concrete is poured, temperature and humidity are controlled, reasonable curing conditions are controlled, cracks are avoided, and the strength reaches 75% or above;
7) A welding bayonet plate is fixed on the component connecting plate;
8) Preparing a precast beam, fixedly welding a connecting plate at the end of the precast beam after the precast beam is finished, and welding a clamping groove plate on the connecting plate;
9) The prefabricated beam is assembled on site, the slot clamping plates on the prefabricated beam are buckled with the bayonet plates on the embedded members, the prefabricated Liang Dazai is arranged on the prefabricated column to form mechanical connection with certain strength, the connecting position is finely adjusted to ensure that the high-strength bolt rod passes through the first bolt hole and the second bolt hole after the position is accurate, and the nut is screwed to prevent the beam column from being dislocated to influence the strength.
4. The method for preparing the assembled detachable RC beam-column joint according to claim 3, wherein the method comprises the following steps: the reinforcement ratio of the beam column is the minimum reinforcement ratio, and the length of the anchoring hook is a straight section
Hook->
15d, the tail end is bent by 90 degrees, the beam column longitudinal bars and the stirrups are connected by binding lap joint, mechanical connection and welding, and the binding lap joint section is 1.3 ^ er>
Or 1.3>
Mechanically connecting, wherein the welding connection is 35d and is more than or equal to 500mm, and d is the smaller diameter of the two mutually connected steel bars; when different connecting steel bars in the same component calculate the connecting areaThe lengths of the segments are different from each other, and the percentage of the lap joints of the longitudinal steel bars in the same connecting segment is 50% of the percentage of the area of the joints when the steel bars with the same diameter are lapped, namely the ratio of the cross-sectional area of the longitudinal stressed steel bars with the connecting joints in the segment to the cross-sectional area of all the longitudinal steel bars. />
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| CN114508174B (en) * | 2022-02-23 | 2023-04-11 | 福建工程学院 | Can replace assembled beam column node of artifical hinge |
| SE546038C2 (en) * | 2022-03-03 | 2024-04-23 | Balco Group Ab | System and method for suspending a framework structure on a load bearing structure of a building and use of such suspension system |
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