CN219011479U - Assembled frame connecting node and assembled frame - Google Patents

Abstract

The utility model discloses an assembled frame connecting node and an assembled frame in the technical field of buildings, wherein the assembled frame connecting node comprises a node core area and a beam column embedded part, the beam column embedded part comprises an end plate, and the node core area comprises an upper flange plate, a lower flange plate, a longitudinal partition plate connected between the upper flange plate and the lower flange plate, and a connecting plate arranged on the longitudinal partition plate. The beam column embedded part is used for being embedded in the prefabricated beam and the prefabricated column, and the node core area is used for being connected with each end plate, so that the prefabricated beam and the prefabricated column are assembled into an assembled frame. According to the construction method, the beam column embedded parts are arranged on the precast beams and the columns, the node core area is utilized to connect the beam column embedded parts to form the assembled frame, the connecting parts are exposed through bolts, the structure is safe and reliable, temporary support is not needed in the construction process, wet operation is not needed in the node area, the construction cost is reduced, the construction of the upper frame does not influence the construction of the lower concrete floor cast-in-situ layer, and the construction progress is accelerated.

Description

Assembled frame connecting node and assembled frame

Technical Field

The utility model relates to the technical field of buildings, in particular to an assembled frame connecting node and an assembled frame.

Background

The assembled concrete structure is formed by using the prefabricated components as main stress components through assembly connection, and has the advantages of high construction efficiency, more meeting the requirements of green construction and the like. According to the requirements of technical Specification of fabricated concrete structures (JGJ 1-2014), the floor slab of the fabricated concrete frame structure is provided with a cast-in-situ layer to ensure the integrity of the structure. In order to meet the standard requirements, the beam of the common fabricated concrete frame structure needs to be constructed for two times, namely a prefabricated part and a cast-in-place part, and as the steel bars of the plates and the beam need to be anchored in the nodes, the nodes need to be cast-in-place, and grouting sleeves are needed to be arranged for the connection of the prefabricated beams, the columns and the nodes. The node connection method needs more temporary support, has large field wet workload and long construction period, and the quality of concrete in the grouting sleeve is difficult to detect. Under the condition of meeting the requirements of the specifications, how to further reduce on-site wet operation, optimize node connection structure and assembly method and accelerate construction progress is an urgent problem to be solved.

Disclosure of Invention

In order to overcome the defects of the prior assembly type frame, the utility model aims to solve the technical problems that: provided are an assembly type frame connecting node with high construction efficiency, an assembly type frame and an assembly method.

The technical scheme adopted for solving the technical problems is as follows:

the assembled frame connecting node comprises a node core area and a beam column embedded part, wherein the beam column embedded part comprises an end plate, a peg and a shear key adaptation groove which are arranged on one side of the end plate, the shear key adaptation groove is arranged in the center of the end plate, a first through hole is formed in the periphery of the end plate, a threaded hole is formed in one end of the peg, which is connected with the end plate, of the peg, the threaded hole is aligned with the first through hole, the node core area comprises an upper flange plate, a lower flange plate, a longitudinal partition plate connected between the upper flange plate and the lower flange plate, a connecting plate arranged on the longitudinal partition plate, shear keys matched with the shear key adaptation groove are arranged in the middle of the upper flange plate, the lower flange plate and the connecting plate, and second through holes matched with the first through holes are formed in the periphery of the upper flange plate, the lower flange plate and the lower flange plate.

Further, the node core area comprises a bottom layer column bottom node, a middle layer column bottom node and a top layer column top node, a connecting plate is not arranged on the bottom layer column bottom node, and a shear key and a second through hole are not arranged on an upper flange plate of the top layer column top node.

Further, the height of the longitudinal partition plates of the middle layer node and the top layer column top node is 200-500mm, and a transverse partition plate is arranged in the middle of the longitudinal partition plates.

Further, the connecting plates are connected with the longitudinal partition plates through H-shaped steel, and the length of the H-shaped steel is 200-500mm.

Further, semicircular holes are formed in the upper flange plate and the lower flange plate of the H-shaped steel.

Further, one end of the peg far away from the end plate is provided with a hemispherical top cap, and the outer diameter of the hemispherical top cap is larger than that of the peg.

The assembled frame comprises a precast beam and a precast column of reinforced concrete and further comprises an assembled frame connecting node, wherein end plates of beam column embedded parts are embedded at the end parts of the precast beam and the precast column, reinforcement cages of the precast beam and the precast column are welded with the end plates, and the precast beam and the precast column are connected through a node core area to form the assembled frame.

Further, the steel reinforcement cage of precast beam includes that the bottom is indulged muscle and stirrup, the bottom is indulged the muscle and is welded with the end plate bottom, and the end plate middle part is equipped with pre-buried muscle, the top of stirrup exceeds the concrete upper surface of precast beam, and it is the thickness of upstairs, roof boarding to subtract 15mm that it surpasss the height, has the top to indulge the muscle at the stirrup top interlude, and the tip and the node core district welding of the top of indulging the muscle, the upper surface of precast beam is equipped with cast-in-place layer and indulges the muscle with the stirrup top and cover.

Further, for the precast beam needing to be provided with the floor slab, the cast-in-situ layer on the upper surface of the precast beam and the cast-in-situ layer of the floor slab are integrally cast and formed; for the precast beam on top layer, if there is the roof beam in node core district both sides, the top is indulged the muscle and is link up node core district top and set up, if there is the roof beam in node core district only one side, the top is indulged the muscle and is buckled the welding downwards on the top flange plate, the welding has the U-shaped stirrup to indulge the muscle at top on the top flange plate and retrain.

The beneficial effects of the utility model are as follows: the beam column embedded parts are arranged on the precast beams and the columns, the beam column embedded parts are connected by the node core area to form the assembled frame, the connecting parts are exposed by bolts, the structure is safe and reliable, temporary support is not needed in the construction process, wet operation is not needed in the node area, the construction cost is reduced, the construction of the upper frame does not influence the construction of the lower concrete floor cast-in-situ layer, and the construction progress is accelerated.

Drawings

FIG. 1 is a schematic view of the assembled frame connection node structure of the present utility model.

FIG. 2 is a schematic view of the bottom node structure of the bottom pillar according to the present utility model.

FIG. 3 is a schematic diagram of the top-level column-top node structure of the present utility model.

Fig. 4 is a schematic view of the peg structure of the present utility model.

Fig. 5 is a schematic view of the structure of the beam column reinforcement cage of the utility model.

FIG. 6 is a schematic view of a beam column structure according to the present utility model.

Fig. 7 is a schematic view of the structure of the precast beam embedded steel bar of the present utility model.

Fig. 8 is a schematic diagram of the connection structure of the intermediate layer node and the precast beam reinforcement cage according to the present utility model.

Fig. 9 is a schematic diagram of the connection structure of the top column top node and the precast beam reinforcement cage according to the present utility model.

Fig. 10 is a schematic view of the mounting structure of the frame and floor of the present utility model.

The structure is characterized in that a 1-node core area, a 2-beam column embedded part, a 3-precast beam, a 4-precast column, a 5-floor precast layer, a 6-floor cast-in-situ layer, an 11-upper flange plate, a 12-lower flange plate, a 13-longitudinal baffle plate, a 14-connecting plate, a 15-shear key, a 16-second through hole, a 17-transverse baffle plate, 18-H-shaped steel, a 19-semicircular hole, a 21-end plate, a 22-peg, a 23-shear key adapting groove, a 24-first through hole, a 25-threaded hole, a 26-hemispherical top cap, a 27-embedded rib, a 31-bottom longitudinal rib, a 32-stirrup, a 33-top longitudinal rib and a 34-U-shaped stirrup are formed in the figure.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

As shown in fig. 1-4, the assembled frame connecting node of the utility model comprises a node core area 1 and a beam column embedded part 2, wherein the beam column embedded part 2 comprises an end plate 21, a peg 22 and a shear key matching groove 23, wherein the peg 22 and the shear key matching groove 23 are arranged on one embedded side of the end plate 21, the shear key matching groove 23 is positioned in the center of the end plate 21, a first through hole 24 is formed in the periphery of the end plate 21, a threaded hole 25 is formed in one end, connected with the end plate 21, of the peg 22, the threaded hole 25 is aligned with the first through hole 24, the node core area 1 comprises an upper flange plate 11, a lower flange plate 12, a longitudinal baffle plate 13 connected between the upper flange plate 11 and the lower flange plate 12, and a connecting plate 14, a shear key 15 matched with the shear key matching groove 23 is arranged in the middle of the upper flange plate 11, and a second through hole 16 matched with the first through hole 24 is formed in the periphery of the upper flange plate 12 and the middle of the connecting plate 14.

The beam column embedded part 2 is used for being embedded in the precast beam 3 and the precast column 4, wherein the end plates 21 are positioned at the installation ends of the precast beam 3 and the precast column 4, and the upper flange plate 11, the lower flange plate 12 and the connecting plate 14 on the node core area 1 are used for connecting each end plate 21, so that the precast beam 3 and the precast column 4 are assembled into an assembled frame. During the connection, the shear key fitting grooves 23 on the end plate 21 are first mated and butted with the shear keys 15 on the upper flange plate 11, the lower flange plate 12 and the connection plate 14 while the first through holes 24 are aligned with the second through holes 16, and then fastened by bolts sequentially passing through the second through holes 16, the first through holes 24 and the screw holes 25 on the pegs 22.

The node core area 1 can be divided into a bottom layer column bottom node, a middle layer column bottom node and a top layer column top node according to different use conditions and installation positions, wherein the bottom layer column bottom node is used for connecting a prefabricated column and a foundation, as shown in fig. 2, a connecting plate 14 is not required to be arranged because of no connection of a beam, and the height is too high; the intermediate layer node is provided with a connecting plate 14 as shown in fig. 1, and the height is higher; the top column top node, as shown in fig. 3, has no prefabricated column at the top, so the upper flange plate 11 is not provided with shear keys 15 and second through holes 16.

For the middle deck node and the top deck column top node, since the size of the girder and the floor slab needs to be considered, the height of the vertical partition 13 of the middle deck node and the top deck column top node is 200-500mm, and in order to increase the structural strength, it is preferable to provide a diaphragm 17 in the middle of the vertical partition 13 to transmit the force of the upper flange plate of the girder.

Further, for convenient installation, the connecting plate 14 is connected with the longitudinal partition 13 through the H-shaped steel 18, so that the connecting plate 14 extends out of the node core area 1, and the length of the H-shaped steel 18 is 200-500mm in consideration of structural strength, so that enough assembly space can be reserved. Semi-circular holes 19 are further formed in the upper flange plate and the lower flange plate of the H-shaped steel 18, so that plastic hinges are formed at the semi-circular holes, dog-bone connection is formed, and strong column and weak beam design is guaranteed.

For the peg 22, for conveniently processing screw hole 25, can adopt screw sleeve structure, but in order to avoid concrete entering screw hole 25 in precast beam, the preparation in-process of post, can set up hemispherical top cap 26 in the one end that peg 22 kept away from end plate 21, as shown in fig. 4, the external diameter of hemispherical top cap 26 is greater than peg 22 external diameter about 5mm, can avoid concrete to get into screw hole 25, can avoid end plate 21 to become flexible break away from precast concrete beam, post simultaneously.

Adopt the assembled frame of above-mentioned assembled frame connection node preparation, including precast beam 3 and precast column 4 of reinforced concrete, still include assembled frame connection node, wherein, the end plate 21 of beam column built-in fitting 2 is pre-buried at the tip of precast beam 3 and precast column 4 to the steel reinforcement cage and the end plate 21 welding of precast beam 3 and precast column 4, concrete structure are as shown in fig. 5, fig. 6, precast beam 3 and precast column 4 pass through node core district and connect and form assembled frame. By employing appropriate bottom, middle and top column bottom nodes, a straight, L, T or cross frame structure can be achieved. When the assembled frame connecting node is designed according to the precast beams and columns, the edge of the end plate 21 is 10-15mm smaller than the edges of the precast beams and columns, so that gaps are reserved for subsequent filling and painting, and the steel structure is prevented from being exposed.

For the precast beam 3, considering that the precast beam needs to be assembled and connected with a floor slab and meets the requirements of the technical Specification of assembled concrete structures, a cast-in-situ layer needs to be arranged on the precast beam to ensure the structural integrity. Therefore, the preferable scheme is that the reinforcement cage of the precast beam 3 comprises a bottom longitudinal rib 31 and a stirrup 32, as shown in fig. 7, the bottom longitudinal rib 31 is welded with the bottom of the end plate 21, an embedded rib 27 is arranged in the middle of the end plate 21, the end part of the embedded rib 27 can be bent so as to be stably connected with concrete, as shown in fig. 8, the top of the stirrup 32 exceeds the upper surface of the precast beam 3, the exceeding height is the thickness of an upper building and a roof board minus 15mm, a top longitudinal rib 33 is inserted at the top of the stirrup 32, the end part of the top longitudinal rib 33 is welded with the node core area 1, and a cast-in-place layer is arranged on the upper surface of the precast beam 3 to cover the top of the stirrup 32 and the top longitudinal rib 33. The precast beam 3 and the precast column 4 can be connected together in a casting way through the cast-in-situ layer, so that the structural integrity is improved.

As shown in fig. 10, for a precast beam 3 to be provided with a floor slab, the floor slab is divided into a floor slab precast layer 5 and a floor slab cast-in-situ layer 6, the floor slab precast layer 5 is flush with the concrete upper surface of the precast beam 3, and the cast-in-situ layer on the upper surface of the precast beam 3 can be directly cast and formed integrally with the floor slab cast-in-situ layer 6, so that the requirement of the assembled concrete structure technical specification on the floor slab for arranging the cast-in-situ layer is met; as shown in fig. 9, for the top-layer precast beam 3, if there are beams at two sides of the node core area 1, the top longitudinal ribs 33 are arranged to penetrate through the top of the node core area 1, if there is a beam at only one side of the node core area 1, the top longitudinal ribs 33 are bent downwards and welded on the upper flange plate 11, and the upper flange plate 11 is welded with U-shaped stirrups 34 to restrain the top longitudinal ribs 33.

A method of assembling a fabricated frame comprising the steps of:

a. manufacturing assembled frame connecting joints, beam and column reinforcement cages according to the frame structure and the beam and column dimensions, and welding the beam and column embedded parts with the beam and column reinforcement cages;

b. pouring concrete to manufacture precast beams and columns, wherein the precast beams do not contain top longitudinal ribs, the tops of the stirrups exceed the upper surface of the concrete of the precast beams, and the exceeding height is the thickness of an upper building and a roof slab minus 15mm;

c. assembling beams and columns by utilizing the node core area according to the frame structure, and prefabricating the frame in shape;

d. the top of the stirrup of the precast beam is connected with a top longitudinal rib in a penetrating way, and the top longitudinal rib is welded with a longitudinal baffle plate of a node core area;

e. installing a floor slab prefabricated layer on the prefabricated beam, binding hogging moment steel bars of the cast-in-situ layer, and finally casting the floor slab cast-in-situ layer on the prefabricated beam and the floor slab prefabricated layer;

f. c, installing the components layer by layer from bottom to top according to the steps c to e;

g. after the installation is completed, the exposed steel materials in the node area are subjected to rust prevention treatment by using rust prevention paint, the gaps of the connecting pieces are filled with dry and hard aerated concrete or rock wool, and are painted by using cement mortar.

According to the method, the beam column embedded parts are arranged on the precast beams and the columns, the node core area is utilized to connect the beam column embedded parts to form the assembled frame, the connecting parts are exposed through bolts, the structure is safe and reliable, temporary support is not needed in the construction process, wet operation is not needed in the node area, the construction cost is reduced, the construction of the upper frame does not influence the construction of the lower concrete floor cast-in-situ layer, the construction progress is accelerated, and the method has good application prospect.

Claims (9)

1. Assembled frame connection node, characterized by: including node core district (1) and beam column built-in fitting (2), beam column built-in fitting (2) include end plate (21), peg (22) and shear key adaptation groove (23) that are set up in pre-buried one side of end plate (21), shear key adaptation groove (23) are located end plate (21) center, and end plate (21) periphery is equipped with first through-hole (24), peg (22) are equipped with screw hole (25) with the one end that end plate (21) links to each other to screw hole (25) are aligned with first through-hole (24), node core district (1) include upper flange plate (11), lower flange plate (12) and link to each other longitudinal baffle (13) between them to and set up connecting plate (14) on longitudinal baffle (13), the middle part of upper flange plate (11), lower flange plate (12) and connecting plate (14) is equipped with shear key (15) with shear key adaptation groove (23) assorted, and periphery is equipped with second through-hole (16) with first through-hole (24) assorted.

2. The fabricated frame interface node of claim 1, wherein: the node core area (1) comprises a bottom layer column bottom node, a middle layer column bottom node and a top layer column top node, wherein a connecting plate (14) is not arranged on the bottom layer column bottom node, and a shear key (15) and a second through hole (16) are not arranged on an upper flange plate (11) of the top layer column top node.

3. The fabricated frame interface node of claim 2, wherein: the height of the longitudinal partition plates (13) of the middle layer node and the top layer column top node is 200-500mm, and a transverse partition plate (17) is arranged in the middle of the longitudinal partition plates (13).

4. The fabricated frame interface node of claim 1, wherein: the connecting plates (14) are connected with the longitudinal partition plates (13) through H-shaped steel (18), and the length of the H-shaped steel (18) is 200-500mm.

5. The fabricated frame interface node of claim 4, wherein: semicircular holes (19) are formed in the upper flange plate and the lower flange plate of the H-shaped steel (18).

6. The fabricated frame interface node of claim 1, wherein: one end of the peg (22) far away from the end plate (21) is provided with a hemispherical top cap (26), and the outer diameter of the hemispherical top cap (26) is larger than the outer diameter of the peg (22) by about 5mm.

7. Assembled frame, including precast beam (3) and precast column (4) of reinforced concrete, characterized by: the prefabricated frame connecting node further comprises the assembled frame connecting node according to any one of claims 1-6, wherein the end plates (21) of the beam and column embedded parts (2) are embedded at the end parts of the prefabricated beams (3) and the prefabricated columns (4), reinforcement cages of the prefabricated beams (3) and the prefabricated columns (4) are welded with the end plates (21), and the prefabricated beams (3) and the prefabricated columns (4) are connected through the node core area (1) to form the assembled frame.

8. The fabricated frame of claim 7, wherein: the steel reinforcement cage of precast beam (3) is including bottom longitudinal reinforcement (31) and stirrup (32), bottom longitudinal reinforcement (31) and end plate (21) bottom welding, and end plate (21) middle part is equipped with pre-buried muscle (27) and end plate (21) welding, the concrete upper surface of precast beam (3) is exceeded at the top of stirrup (32), and its excess height subtracts 15mm for the thickness of superstructure, roof boarding, alternates at stirrup (32) top has top longitudinal reinforcement (33), and the tip and the node core district (1) welding of top longitudinal reinforcement (33), the upper surface of precast beam (3) is equipped with cast-in-place layer and indulges stirrup (32) top and top longitudinal reinforcement (33) cover.

9. The fabricated frame of claim 8, wherein: for a precast beam (3) needing to be provided with a floor slab, a cast-in-situ layer on the upper surface of the precast beam (3) and the cast-in-situ layer of the floor slab are integrally cast and formed; for precast beams (3) at the top layer, if beams are arranged on two sides of a node core area (1), a top longitudinal rib (33) is arranged at the top of the node core area (1), if only one side of the node core area (1) is provided with the beams, the top longitudinal rib (33) is downwards bent and welded on an upper flange plate (11), and U-shaped stirrups (34) are welded on the upper flange plate (11) to restrain the top longitudinal rib (33).

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