CN215106436U

CN215106436U - Connecting joint of precast concrete composite floor slab

Info

Publication number: CN215106436U
Application number: CN202120921952.2U
Authority: CN
Inventors: 时延焕
Original assignee: Tianhua Architecture Design Co ltd
Current assignee: Tianhua Architecture Design Co ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-12-10
Anticipated expiration: 2031-04-29

Abstract

The utility model provides a connected node of precast concrete coincide floor belongs to building technical field. It includes a plurality of U shaped steel bars that prefabricated floor splice surface set up, and the open end of U shaped steel bar is fixed in prefabricated floor's splice surface, and U shaped steel bar on the adjacent prefabricated floor passes through the connecting plate to be fixed together, and the connecting plate includes two webs that pterygoid lamina and perpendicular to pterygoid lamina set up, and distance between two webs is the same with the interval between the adjacent prefabricated floor, and the web extends inside to set up a plurality of recesses, and U shaped steel bar is fixed in the recess. Through the U shaped steel muscle on the adjacent precast floor respectively the joint in the recess on the connecting plate, accomplish the fixed of floor, simple to operate, the efficiency of construction is high, suits to use widely on a large scale. In addition, adopt the connected mode of U shaped steel muscle joint recess on the connecting plate, pour the completion back wholeness better, can effectual assurance connected node's stable in structure, avoided the emergence of the concrete cracking phenomenon of pouring between the floor.

Description

Connecting joint of precast concrete composite floor slab

Technical Field

The utility model belongs to the technical field of the building, a connected node of precast concrete coincide floor is related to.

Background

With the development of economy and the adjustment of the field of fabricated concrete buildings, fabricated technologies are widely popularized and applied in China. The prefabricated reinforced concrete floor slab is prefabricated in factory or site and then lifted to house manually or mechanically and grouted. The prefabricated reinforced concrete composite slab floor slab is a member which is most applied at present, the connection between the composite slabs is usually in a cast-in-place slab band mode, a joint with a certain width is reserved between two prefabricated slabs, and the joint and the tops of the prefabricated slabs are formed into a whole in a concrete cast-in-place mode. Because precast concrete coincide floor is formed by the concatenation of precast concrete floor, though pour the completion back wholeness better, the efficiency of construction is low, and is consuming time power, simultaneously because produce the cold front of a knife or a sword of being under construction easily between new and old concrete, the later stage can produce the risk of fracture. At present, the engineering projects of the fully prefabricated floor slab are few, and one reason is that a safe and reliable connection mode is not found.

Disclosure of Invention

The utility model aims at the above-mentioned problem, a connected node of precast concrete coincide floor is provided.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

the utility model provides a connected node of precast concrete coincide floor, a plurality of U type reinforcing bar including precast floor concatenation face setting, the open end of U type reinforcing bar is fixed in precast floor's concatenation face, U type reinforcing bar on the adjacent precast floor passes through the connecting plate to be fixed together, the connecting plate includes two webs that pterygoid lamina and perpendicular to pterygoid lamina set up, distance between two webs is the same with the interval between the adjacent precast floor, the web extends to inside and sets up a plurality of recesses, the top of web sets up the pothook, U type reinforcing bar is fixed in the recess, the pothook block is at the upper surface of U type reinforcing bar.

In foretell precast concrete coincide floor's connected node, U shaped steel muscle is including the first limit, second limit and the third limit that connect gradually, and first limit and third limit are connected in precast floor's side.

In the connected node of foretell precast concrete coincide floor, set up a plurality of groups recess on the web, in U shaped steel muscle was fixed in the recess of the same group, in every group recess, the interval between the recess was the same with the interval between first edge and third edge, and the interval between two sets of recesses was the same with the interval between the adjacent U shaped steel muscle.

In the connected node of foretell precast concrete coincide floor, the web extends to inside and sets up a plurality of equidistant recesses, and the interval between the recess, the interval of U shaped steel muscle open end, the distance between the U shaped steel muscle are all the same.

In the above connecting joint of the precast concrete composite floor slab, the hook is arranged on the side surface of the opposite side of the two webs, one side of the hook close to the wing plate is a flat plate, one side of the hook far away from the wing plate is a guide surface, and the included angle between the flat plate and the guide surface is alpha, wherein alpha is less than 10 degrees and less than 40 degrees.

In the connecting joint of the precast concrete composite floor slab, the height of the flat plate is the same as that of the U-shaped steel bar.

In the connecting node of the precast concrete composite floor slab, the wing plate is also provided with a plurality of limiting rods, and the limiting rods are arranged between the two webs.

In the above-mentioned connected node of precast concrete coincide floor, precast floor upside still sets up the reinforcing bar, and the reinforcing bar is binded on the gag lever post, and precast floor upside and adjacent precast floor fill the concrete between the floor.

In the connected node of foretell precast concrete coincide floor, the pterygoid lamina still includes the flange board, and the flange board is established in the outside of two webs, and the downside of precast floor concatenation face sets up the mounting groove to inside extension, and the shape phase-match of mounting groove and flange board, the flange board is located in the mounting groove.

In the connecting node of the precast concrete composite floor slab, a plurality of studs are welded on the flange plates, a plurality of through holes are formed in the precast floor slab and the positions corresponding to the studs, and when the precast floor slab is fixed on the connecting plate, the studs are inserted into the through holes.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses in, through the U shaped steel muscle on the adjacent prefabricated floor in the recess of joint on the connecting plate respectively, accomplish the fixed of floor. This kind of structure, simple to operate need not welding or fix with rivet, and the efficiency of construction is high, and is lower to workman's construction level requirement, suitable using widely on a large scale. In addition, adopt the connected mode of U shaped steel muscle joint recess on the connecting plate, pour the completion back wholeness better, can effectual assurance connected node's stable in structure, avoided the emergence of the concrete cracking phenomenon of pouring between the floor.

The utility model discloses in, U shaped steel muscle presses to the surface of spigot surface, and the web produces elastic deformation, and in U shaped steel muscle joint to the recess, the pothook block was carried on spacingly to the U shaped steel muscle that is fixed in the recess at the upper surface of U shaped steel muscle, and the horizontal displacement of restriction precast floor reaches upper and lower displacement, improves joint strength and connection compactness between the precast concrete floor. The structure is convenient to install, high in construction efficiency, simple to operate and wide in application range, and welding or rivet connection is not needed.

The utility model provides a stop lever plays spacing effect to the concrete of pouring, and the thickness of control floor plate improves the shaping effect of engineering precision and connected node concrete, avoids the later stage to produce the emergence of the phenomenon of fracture. Bind the reinforcing bar on the gag lever post, carried on spacingly to the reinforcing bar, controlled the distance between reinforcing bar and the prefabricated floor promptly, improved engineering precision.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the connection plate.

Fig. 3 is a partially enlarged view of a in fig. 2.

Fig. 4 is a schematic structural view of a prefabricated floor slab.

Fig. 5 is a side view of the connection plate.

Fig. 6 is a structural schematic view of the mounting groove.

Fig. 7 is a schematic structural view of another state of the connection plate.

Fig. 8 is a schematic view of the installation of the peg.

Fig. 9 is a schematic structural diagram of another state of the present invention.

In the figure: prefabricated floor 1, U shaped steel muscle 2, connecting plate 3, pterygoid lamina 4, web 5, recess 6, first limit 7, second limit 8 and third limit 9, first limit 7, third limit 9, pothook 10, dull and stereotyped 11, spigot surface 12, gag lever post 13, reinforcing bar 14, flange board 15, mounting groove 16, peg 17, through-hole 18.

Detailed Description

The present invention will be further described with reference to the following specific embodiments.

As shown in fig. 1-5, a connected node of precast concrete coincide floor, including a plurality of U shaped steel 2 that precast floor 1 splice face set up, the open end of U shaped steel 2 is fixed in precast floor 1's splice face, U shaped steel 2 on the adjacent precast floor 1 passes through connecting plate 3 to be fixed together, connecting plate 3 includes two webs 5 that pterygoid lamina 4 and perpendicular to pterygoid lamina 4 set up, the distance between two webs 5 is the same with the interval between the adjacent precast floor 1, web 5 extends to inside and sets up a plurality of recesses 6, the top of web 5 sets up pothook 10, U shaped steel 2 is fixed in recess 6, pothook 10 block is at the upper surface of U shaped steel 2.

When the embodiment connects adjacent precast floor slabs 1, U-shaped steel bars 2 on the adjacent precast floor slabs 1 are respectively clamped in the grooves 6 on the connecting plates 3 to complete the fixation. The structure and the connection mode in the embodiment have the advantages of convenience in installation, no need of welding or rivet fixation, high construction efficiency, low requirement on the construction level of workers and suitability for large-scale popularization and use. The structure is fixed more than adjacent prefabricated floor 1, and the wholeness is better after pouring, can effectual assurance connected node's stable in structure, and the risk of the concrete emergence fracture of having avoided pouring between the floor.

As shown in fig. 4, the U-shaped reinforcement 2 preferably includes a first side 7, a second side 8, and a third side 9 connected in sequence, and the first side 7 and the third side 9 are connected to the lateral sides of the precast floor panel 1. The first edge 7 and the third edge 9 are respectively inserted into the groove 6, and the hook 10 is clamped on the upper surface of the second edge 8. The structure and the connection mode are convenient to install, welding or rivet connection is not needed, construction efficiency is high, operation is simple, and the application range is wider. In addition, this kind of structure and connected mode can effectually guarantee connected node's structural stability and durability, restrict the horizontal displacement of precast floor 1 and displacement from top to bottom, improve the joint strength and the connection compactness between the precast concrete floor.

As shown in fig. 4-5, preferably, a plurality of groups of grooves 6 are formed in the web 5, the U-shaped steel bars 2 are fixed in the same group of grooves 6, in each group of grooves 6, the distance between the grooves 6 is the same as the distance between the first edge 7 and the third edge 9, and the distance between two groups of grooves 6 is the same as the distance between adjacent U-shaped steel bars 2. In each group of grooves 6, the distance between the grooves 6 is the same as the distance between two side edges of the U-shaped steel bar 2. The distance between two adjacent groups of grooves 6 is the same as the distance between two adjacent U-shaped steel bars 2. This structure ensures that U type reinforcing bar 2 can joint in recess 6 smoothly.

As shown in FIG. 5, preferably, the web 5 extends inwards to form a plurality of equally spaced grooves 6, and the spacing between the grooves 6, the spacing between the open ends of the U-shaped steel bars 2, and the distance between the U-shaped steel bars 2 are the same. The grooves 6 on the web 5 are at equal intervals, so that the structure of the connecting plate 3 is simplified, and the production process of the connecting plate 3 is reduced.

As shown in fig. 2-3, it is preferable that the top end of the web 5 is provided with a hook 10, and the hook 10 is provided on the side surface of the two webs 5 opposite to each other, the side of the hook 10 close to the wing plate 4 is a flat plate 11, the side of the hook 10 far from the wing plate 4 is a guide surface 12, and the included angle between the flat plate 11 and the guide surface 12 is α, 10 ° < α <40 °. In the installation, U shaped steel 2 presses to the surface of spigot surface 12, and web 5 produces elastic deformation, and in U shaped steel 2 joints arrived recess 6, dull and stereotyped 11 blocks carried on spacingly at the upper surface of U shaped steel 2 to U shaped steel 2 that is fixed in recess 6.

Preferably, the height of the flat plate 11 is the same as that of the U-shaped steel bar 2. Dull and stereotyped 11 highly is the same with the height of 2 distance prefabricated floor of U shaped steel muscle 1 downside, and when prefabricated floor 1 was fixed on connecting plate 3, U shaped steel muscle 2 was fixed in recess 6, and dull and stereotyped 11 blocks are at the upper surface of U shaped steel muscle 2.

As shown in fig. 7, preferably, a plurality of limiting rods 13 are further disposed on the wing plate 4, and the limiting rods 13 are disposed between the two webs 5. After the prefabricated floor slab 1 is spliced, concrete needs to be poured to the upper side of the prefabricated floor slab and gaps among the prefabricated floor slab and the prefabricated floor slab. In the concrete pouring process, the limiting rod 13 plays a limiting role in the poured concrete, the thickness of the floor slab is controlled, the engineering precision and the forming effect of the concrete of the connecting node are improved, and the phenomenon that cracking can occur in the later period is avoided.

As shown in fig. 1, in a preferred embodiment, the upper side of the precast floor slab 1 is further provided with a steel bar 14, the steel bar 14 is bound on the limiting rod 13, and concrete is filled between the upper side of the precast floor slab 1 and the adjacent precast floor slab 1. The reinforcing steel bars 14 are bound on the limiting rods 13, and the reinforcing steel bars 14 are limited, namely, the distance between the reinforcing steel bars 14 and the prefabricated floor slab 1 is controlled.

As shown in fig. 1, 2 and 6, preferably, the wing plate 4 further includes a flange plate 15, the flange plate 15 is disposed on the outer side of the two webs 5, an installation groove 16 is extended inward from the lower side of the splicing surface of the prefabricated floor slab 1, the installation groove 16 matches with the shape of the flange plate 15, and the flange plate 15 is disposed in the installation groove 16. The height of the mounting groove 16 is the same as the height of the flange plate 15, and the depth of the mounting groove 16 extending inward is the same as the width of the flange plate 15. In the installation process, the flange plate 15 is installed in the installation groove 16, the web 5 is attached to the splicing surface of the prefabricated floor slab 1, and the U-shaped steel bar 2 is clamped in the groove 6. With traditional cast-in-place slab band, this embodiment flange plate 15 is installed in mounting groove 16, combines in U shaped steel muscle 2 card income recess 6, and the connection structure and the mode stability of this embodiment are good, and the phenomenon of fracture can not take place in the connected node later stage.

As shown in fig. 4, 5, 8 and 9, preferably, a plurality of studs 17 are welded on the flange plate 15, a plurality of through holes 18 are provided at positions of the precast floor slab 1 corresponding to the studs 17, and the studs 17 are inserted into the through holes 18 when the precast floor slab 1 is fixed on the connecting plate 3. The U-shaped steel bar 2 is limited by the groove 6 and the clamping hook 10, and then is inserted into the through hole 18 through the stud 17, so that secondary limitation is realized, horizontal displacement and vertical displacement of the prefabricated floor slab 1 are limited, the stability of a connection node structure is effectively guaranteed, the connection strength between prefabricated concrete floor slabs is improved, and the phenomenon that concrete poured between the floor slabs cracks is avoided.

The working process of the embodiment is as follows: (1) the connection plate 3 is mounted to the mounting site. (2) And hoisting the prefabricated floor slab 1 on one side, clamping the U-shaped steel bar 2 into the groove 6, and clamping the clamping hook 10 on the upper surface of the U-shaped steel bar 2. The pegs 17 on the flange plate 15 are inserted into the through holes 18. The same installation method is used to install the prefabricated floor slab 1 on the other side. (3) After the reinforcing steel bars 14 are bound on the limiting rods 13, concrete is poured.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a connected node of precast concrete coincide floor which characterized in that: a plurality of U type reinforcing bar (2) including prefabricated floor (1) splice surface setting, the splice surface of prefabricated floor (1) is fixed in to the open end of U type reinforcing bar (2), U type reinforcing bar (2) on adjacent prefabricated floor (1) are together fixed through connecting plate (3), two webs (5) that pterygoid lamina (4) set up are included in connecting plate (3), distance between two webs (5) is the same with the interval between adjacent prefabricated floor (1), web (5) set up a plurality of recesses (6) to inside extension, the top of web (5) sets up pothook (10), U type reinforcing bar (2) are fixed in recess (6), pothook (10) block is at the upper surface of U type reinforcing bar (2).

2. The precast concrete composite floor slab connection node according to claim 1, wherein: u type reinforcing bar (2) are including first limit (7), second limit (8) and third limit (9) that connect gradually, and first limit (7) and third limit (9) are connected in the side of prefabricated floor (1).

3. The precast concrete composite floor slab connection node according to claim 2, wherein: set up a plurality of groups recess (6) on web (5), in U shaped steel (2) were fixed in groove (6) of the same group, in every group recess (6), the interval between recess (6) was the same with the interval between first edge (7) and third edge (9), and the interval between two sets of recesses (6) is the same with the interval between adjacent U shaped steel (2).

4. The precast concrete composite floor slab connection node according to claim 1, wherein: the web (5) extends to inside and sets up a plurality of equidistant recesses (6), and the interval between recess (6), the interval of U type reinforcing bar (2) open end, the distance between U type reinforcing bar (2) are all the same.

5. The precast concrete composite floor slab connection node according to claim 1, wherein: the clamping hooks (10) are arranged on the side faces of the opposite sides of the two webs (5), one side, close to the wing plate (4), of each clamping hook (10) is a flat plate (11), one side, far away from the wing plate (4), of each clamping hook (10) is a guide surface (12), an included angle between each flat plate (11) and each guide surface (12) is alpha, and 10 degrees < alpha <40 degrees.

6. The precast concrete composite floor slab connection node according to claim 5, wherein: the height of the flat plate (11) is the same as that of the U-shaped steel bar (2).

7. The precast concrete composite floor slab connection node according to claim 1, wherein: the wing plate (4) is also provided with a plurality of limiting rods (13), and the limiting rods (13) are arranged between the two webs (5).

8. The precast concrete composite floor slab connection node according to claim 7, wherein: the upper side of the prefabricated floor slab (1) is also provided with a steel bar (14), the steel bar (14) is bound on the limiting rod (13), and concrete is filled between the upper side of the prefabricated floor slab (1) and the adjacent prefabricated floor slabs (1).

9. The precast concrete composite floor slab connection node according to claim 1, wherein: wing panel (4) still include flange board (15), and establish in the outside of two webs (5) flange board (15), and the downside of prefabricated floor (1) splice face is inside to extend and set up mounting groove (16), and the shape phase-match of mounting groove (16) and flange board (15), and mounting groove (16) are located in flange board (15).

10. The precast concrete composite floor slab connection node according to claim 9, wherein: a plurality of studs (17) are welded on the flange plates (15), a plurality of through holes (18) are formed in the positions, corresponding to the studs (17), of the prefabricated floor slab (1), and when the prefabricated floor slab (1) is fixed on the connecting plate (3), the studs (17) are inserted into the through holes (18).