CN212248710U - An integral connection node of a prefabricated floor slab and a wall panel - Google Patents

Abstract

The utility model discloses an integral connection node of a prefabricated floor slab and a wall slab, which comprises a first floor slab and a second floor slab which are overlapped by tongue and groove, and a lower wall slab and an upper wall slab respectively located below and above the first floor slab. , the upper wall plate is provided with a sleeve for grouting, the lower wall plate is provided with steel bars, the steel bars pass through the grooves of the first floor slab and the second floor slab in turn and extend into the sleeve and further comprising a first grouting area, a grouting channel, and a second grouting area, and the first grouting area, the grouting channel, the second grouting area and the sleeve communicate with each other. It not only realizes the integral connection with the floor and wall panels, but also sets up a first grouting area, a grouting channel, and a second grouting area that are connected. The grouting sleeve of the wall panel realizes the connection between the prefabricated floor slab and the wall panel through the overall grouting of the first grouting area, the grouting channel and the second grouting area.

Description

An integral connection node of a prefabricated floor slab and a wall panel

technical field

The utility model belongs to the field of prefabricated concrete structures, in particular to an integral connection node of a prefabricated floor slab and a wall slab.

Background technique

Compared with traditional reinforced concrete cast-in-situ buildings, prefabricated buildings have a large degree of technical changes and product iterative innovations. Especially in the fully prefabricated system of prefabricated buildings, the reliability and effectiveness of connection nodes and how to improve construction efficiency and reduce costs have become the focus of attention at present. There are many ways to connect nodes between fully prefabricated wall panels and floor slabs on both sides, including Connections between individual fully prefabricated slabs or connections between upper and lower interior walls.

At present, there are three main ways to connect steel bars in fabricated concrete structures: sleeve grouting connection, grout anchor connection and mechanical connection.

Sleeve grouting connection is to insert the connecting steel bar into the grouting sleeve with the concave-convex groove on the inner wall, pour the special high-strength cement-based grouting material into the gap between the sleeve and the steel bar, and anchor the steel bar in the sleeve after the grouting material solidifies. connection technology. Its connection strength is high, the connection quality is stable and reliable, and the fatigue resistance is good, but the construction requirements are relatively high.

The grout anchor connection, also known as indirect anchoring or indirect lap joint, is a method of lap jointing after the lapped steel bars are pulled apart by a certain distance. The method is simple in operation, reliable in connection, convenient in construction, easy to ensure construction quality and low in price.

Mechanical connection is a connection method in which the force in one steel bar is transmitted to another steel bar through the mechanical engagement of the steel bar and the connector or the bearing effect of the end face of the steel bar. Commonly used steel mechanical joints include sleeve extrusion joints, tapered thread joints, etc. Sleeve extrusion joints use a high-pressure oil pump as a power source, and the connecting sleeve is extruded radially through an extruder to produce plastic deformation of the sleeve. , and interlock with the steel bars to form a whole to transmit the force. Due to the heavy equipment, the labor intensity of workers is high, and the equipment is not well maintained, it is easy to cause oil leakage and contaminate the steel bars, which affects the normal performance of the equipment, brings inconvenience to the use and maintenance, slow connection speed, large sleeves, and high costs. The taper thread joint is to use the taper thread threading machine to process the end of the steel bar into a tapered thread, and then connect the sleeve with the tapered thread to the steel bar to be butted together. The connection has strict requirements on the steel bar and on-site management.

Existing connection nodes of floor slabs and wall panels, such as the patent application No. "201911175874.X", titled "A prefabricated panel wall connection node and its construction method", the floor slab and the wall panel are connected by lap joints. The connection body and the poured concrete form a connection, and this method requires a separately designed lap connection body to realize the connection between the floor and the wall; another example, the patent application number is "201620780346.2", the name is "a kind of wall and floor. In the patent of "Connecting Nodes", the upper wall panel and the lower wall panel are connected as a whole through the vertical connector, but this method only directly fastens the upper wall panel and the lower wall panel through the vertical connector, not by casting in situ. Concrete or grouting material is used to connect the upper and lower wall panels.

Therefore, those skilled in the art are committed to developing an integral connection node for cast-in-place prefabricated floor and wall panels.

Utility model content

In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide an integral connection node for cast-in-place prefabricated floor slabs and wall slabs.

In order to achieve the above purpose, the utility model provides an integral connection node of a prefabricated floor slab and a wall panel, including a first floor slab and a second floor slab that are overlapped by tongue and groove, and a lower wall located below and above the first floor slab respectively. The upper wall plate is provided with a sleeve for grouting, and the lower wall plate is provided with steel bars, and the steel bars pass through the grooves of the first floor slab and the second floor slab and extend side by side. into the sleeve;

A first grouting area is arranged between the lower wall plate and the first floor plate and the second floor plate, and a grouting channel is arranged between the steel bar and the grooves of the first floor plate and the second floor plate. A second grouting area is arranged between the upper wall panel and the first floor panel and the second floor panel;

The first grouting area, the grouting channel, the second grouting area and the sleeve communicate with each other.

In order to block the first grouting area and the second grouting area, a first grouting area enclosing the first grouting area is provided between the lower wall panel and the first floor slab and the second floor slab. A second grouting area enclosing the second grouting area is arranged between the upper wall panel and the first floor panel and the second floor panel.

In order to fill the gap between the grooves of the first floor and the second floor, the first grouting area covers the first groove and lap of the first floor, and the second grouting area covers the second grouting area. The second tongue and groove edge of the floor.

In order to ensure the quality of the tongue and groove overlap and the reasonable force of the tongue and groove, a leveling layer is arranged between the tongue and groove of the first floor slab and the second floor slab.

Preferably, the grooves of the first floor slab and the second floor slab form an inverted "Z" shape.

Further, the grooves of the first floor slab and the second floor slab are provided with corresponding rib-inserting holes, the diameter of the rib-inserting holes is larger than the outer diameter of the reinforcing bars, and the gap between the rib-inserting holes and the reinforcing bars is The gaps form the grout runners.

In order to better fix the prefabricated floor slab and the wall panel, the number of the rib insertion holes is multiple, and the plurality of the rib insertion holes are evenly arranged on the grooves of the first floor slab and the second floor slab.

Preferably, the first floor is provided with a lower groove, and the second floor is provided with an upper groove overlapping with the lower groove.

The beneficial effect of the utility model is: in the integral connection node of the prefabricated floor slab and the wall panel of the present utility model, the steel bars not only play the role of connecting the upper and lower wall panels, but also effectively connect the full prefabricated floor slabs on both sides, so as to achieve this integral prefabrication At the same time, the first grouting area, the grouting channel and the second grouting area are connected, and the grouting sleeves of the first floor, the second floor and the upper wall are connected vertically through the lower wall panel. Then, through the overall grouting of the first grouting area, the grouting channel and the second grouting area, the connection between the prefabricated floor slab and the wall panel is realized.

Description of drawings

FIG. 1 is a schematic structural diagram of the integral connection node of the prefabricated floor slab and the wall panel of the present invention.

FIG. 2 is a schematic diagram of the connection structure of the steel bar and the first floor and the second floor in the integral connection node of the prefabricated floor slab and the wall panel of the present invention.

Fig. 3 is a top view of the first floor plate and the second floor plate in the integral connection node of the prefabricated floor plate and the wall plate of the present invention.

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that in the description of the present utility model, the terms "upper", "lower", "left", "right", "inner", "outer" The orientation or positional relationship indicated by "" etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, so as to constructed and operated in a particular manner, and therefore should not be construed as a limitation of the present invention. The terms "first," "second," "third," etc. are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

As shown in Figures 1-3, an integral connection node of a prefabricated floor slab and a wall panel includes a first floor slab 1 and a second floor slab 2 that are overlapped by tongue and groove, and a lower wall located below and above the first floor slab 1 respectively. plate 3 and upper wall plate 4; in this embodiment, the first floor 1 is provided with a lower tongue 102, and the second floor 2 is provided with an upper tongue 202 that overlaps with the lower tongue 102; A sleeve 5 for grouting is provided; steel bars 6 are arranged on the lower wall panel 3;

A first grouting area 7 is provided between the lower wall panel 3 and the first floor 1 and the second floor 2; a grouting channel 8 is provided between the steel bar 6 and the grooves of the first floor 1 and the second floor 2; this embodiment In the example, the grooves of the first floor 1 and the second floor 2 are provided with corresponding rib holes 13; the diameter of the rib holes 13 is larger than the outer diameter of the reinforcing bars 6; the gap between the rib holes 13 and the reinforcing bars 6 forms grouting. runner 8.

A second grouting area 9 is arranged between the upper wall panel 4 and the first floor panel 1 and the second floor panel 2;

The first grouting area 7 , the grouting channel 8 , the second grouting area 9 communicate with the sleeve 5 .

In this embodiment, a first grouting area 10 enclosing the first grouting area 7 is provided between the lower wall panel 3 and the first floor panel 1 and the second floor panel 2, and the upper wall panel 4 and the first floor panel 1 and the second floor panel A second grouting area 11 surrounding the second grouting area 9 is provided between the floor slabs 2 .

The first grouting area 10 covers the first tongue and groove 101 of the first floor 1 ; the second grouting area 11 covers the second tongue and groove 201 of the second floor 2 .

A leveling layer 12 is arranged between the grooves of the first floor 1 and the second floor 2 .

The tongue and groove of the first floor 1 and the second floor 2 form an inverted "Z" shape.

The number of the rib-inserting holes 13 is multiple; the plurality of rib-inserting holes 13 are evenly arranged on the grooves of the first floor 1 and the second floor 2 .

The assembly process is as follows: hoist the lower wall panel 3, and after the lower wall panel 3 is in place, sit the upper end of the lower wall panel 3 to form the first slurry seating area 10; then hoist the first floor panel 1 with the lower groove 102; After the leveling layer 12 is set on the junction surface, the lap joint of the second floor 2 with the upper tongue 202 is carried out; during the hoisting process, it is ensured that the lower tongue 102 and the rib hole 13 on the upper tongue 202 are aligned, and the steel bar 6 passes through the insertion hole 13. Rib hole 13; then sit grouting at the upper ends of the second floor 2 and the first floor 1 to form a second grouting area 11; then hoist the upper wall 4, so that the upper wall 4 is located on the first floor 1 and the second floor The upper part of 2; then grouting, the slurry enters the upper wall panel 4 and the first floor 1 and the second floor 2 through the sleeve 5 in turn to form a second grouting area 9, and then enters the lower wall panel 3 and the lower wall panel 3 through the grouting channel 8. A first grouting area 7 is formed between the first floor 1 and the second floor 2, and the first grouting area 7, the grouting channel 8, and the second grouting area 9 will be grouted in sequence.

The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present invention without creative efforts. Therefore, any technical solutions that can be obtained by those skilled in the art through logical analysis, reasoning or limited experiments on the basis of the prior art according to the concept of the present invention shall fall within the protection scope determined by the claims. .

Claims (8)

1. An integral connection node of a prefabricated floor slab and a wallboard is characterized by comprising a first floor slab (1) and a second floor slab (2) which are overlapped through a tongue-and-groove, and a lower wallboard (3) and an upper wallboard (4) which are respectively positioned below and above the first floor slab (1), wherein a sleeve (5) used for grouting is arranged on the upper wallboard (4), a steel bar (6) is arranged on the lower wallboard (3), and the steel bar (6) sequentially penetrates through the tongue-and-groove of the first floor slab (1) and the second floor slab (2) and extends into the sleeve (5);

a first grouting area (7) is arranged between the lower wallboard (3) and the first floor slab (1) and the second floor slab (2), a grouting flow channel (8) is arranged between the reinforcing steel bar (6) and the rabbet of the first floor slab (1) and the second floor slab (2), and a second grouting area (9) is arranged between the upper wallboard (4) and the first floor slab (1) and the second floor slab (2);

the first grouting area (7), the grouting flow channel (8), the second grouting area (9) and the sleeve (5) are communicated.

2. A prefabricated floor and wall panel integral connection node according to claim 1, wherein a first grout region (10) enclosing said first grout region (7) is provided between said lower wall panel (3) and said first floor (1) and second floor (2), and a second grout region (11) enclosing said second grout region (9) is provided between said upper wall panel (4) and said first floor (1) and second floor (2).

3. A prefabricated floor and wall panel integral joint according to claim 2 wherein said first grout zone (10) overlies a first rebate (101) of said first floor panel (1) and said second grout zone (11) overlies a second rebate (201) of said second floor panel (2).

4. A prefabricated floor and wall panel integral joint according to claim 1 wherein a screed (12) is provided between the rebates of said first floor (1) and second floor (2).

5. A prefabricated floor and wall panel integral joint according to claim 1 wherein said rebates of said first floor (1) and said second floor (2) form an inverted "Z" shape.

6. A prefabricated floor and wall panel integral connection node according to claim 1, wherein the tongue-and-groove of the first floor (1) and the second floor (2) are provided with corresponding dowel holes (13), the diameter of the dowel holes (13) is larger than the outer diameter of the steel bars (6), and the gaps between the dowel holes (13) and the steel bars (6) form the grouting flow passages (8).

7. A prefabricated floor and wall panel integral joint according to claim 6 wherein said plurality of said dowel holes (13) are provided in a uniform pattern on the tongue and groove of said first floor (1) and said second floor (2).

8. A prefabricated floor and wall panel integral joint according to claim 1 wherein said first floor panel (1) is provided with a lower rebate (102) and said second floor panel (2) is provided with an upper rebate (202) overlapping said lower rebate (102).

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