CN217379449U

CN217379449U - Laminated plate

Info

Publication number: CN217379449U
Application number: CN202220567055.0U
Authority: CN
Inventors: 邓群; 宁志强; 彭勇; 肖玉龙; 张弛
Original assignee: Third Construction Shenzhen Co ltd Of China Construction Fifth Engineering Bureau
Current assignee: Third Construction Shenzhen Co ltd Of China Construction Fifth Engineering Bureau
Priority date: 2022-03-15
Filing date: 2022-03-15
Publication date: 2022-09-06
Anticipated expiration: 2032-03-15

Abstract

The utility model is suitable for a building technical field provides a superimposed sheet, include: the prefabricated plates are spliced with each other, a splicing seam is formed between every two adjacent prefabricated plates, and a first steel bar framework is arranged in each prefabricated plate; the post-pouring superposed layer is laminated on the precast slabs and internally provided with a second steel bar framework; and V-shaped structural steel bars are arranged between two adjacent prefabricated plates, the top ends of the V-shaped structural steel bars are connected with a second steel bar framework, the bottom ends of the V-shaped structural steel bars extend into the splicing seams and hook the first through long steel bars, and the two ends of the first through long steel bars are anchored into the beam bodies on the two sides of the laminated slab. The utility model discloses a make into the V type with the constructional steel bar between the piece and make it catch on the anchor and go into the internal first through long reinforcing bar of roof beam, from this the ability of anti fracture deformation of ability reinforcing equally to cancel the reservation short-cut reinforcing bar between the traditional prefabricated plate piece, reduced the on-the-spot installation difficulty degree, eliminated because the construction influence that the reservation reinforcing bar deviation brought.

Description

Laminated plate

Technical Field

The utility model belongs to the technical field of the building, especially, relate to a superimposed sheet.

Background

With the vigorous popularization of assembly type buildings in China, the laminated slabs are more and more applied, in the construction process, the large-size laminated slabs need to be connected in a splicing mode, and the laminated slabs are tested and researched by research groups in the blade donations countries in 2007, and tests show that cracks at the splicing position are concentrated and large, structural measures are reinforced at nodes, and the reinforcement amount and the anchoring measures can be increased to achieve good effects.

As shown in figure 2, most of the joints are made by adopting a post-cast strip type joint processing method, the steel bars at the end parts of prefabricated plates 1 are reserved, the reserved steel bars 12 extend into the joints between the prefabricated plates, and the reserved steel bars 12 are bound and connected or welded with the transverse steel bars 5 of the post-cast laminated layer 4 through longitudinal stress steel bars 13 after field installation, so that the length and the position of the reserved steel bars at the end parts are difficult to be standard, the connecting difficulty of the steel bars after installation is increased, or the anti-cracking capability of the joints under the condition of deviation is difficult to be ensured. In addition, because the width of the joint processing node is 200mm, a cast-in-place part is added, the using amount of a template and a support is increased, and the joint part is often subjected to pulp flowing after actual pouring due to high-low difference control difficulty, so that the polishing workload in the later period is increased.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a superimposed sheet aims at solving an at least technical problem among the above-mentioned background art.

The embodiment of the utility model provides a realize like this, a superimposed sheet, the superimposed sheet includes:

the prefabricated plates are spliced with each other, a splicing seam is formed between every two adjacent prefabricated plates, and a first steel bar framework is arranged in each prefabricated plate;

the post-cast superposed layer is laminated on the precast slabs and is internally provided with a second steel bar framework;

at least one V-shaped constructional steel bar is arranged between every two adjacent prefabricated plates, the top end of each V-shaped constructional steel bar is connected with the second steel bar framework, the bottom end of each V-shaped constructional steel bar extends into the middle of the splicing seam and hooks the first through long steel bar, and the two ends of the first through long steel bar are anchored into the beam bodies on the two sides of the laminated slab.

Preferably, the truss structure further comprises a truss rib, the top end of the truss rib is connected with the second steel bar framework, and the bottom end of the truss rib is connected with the first steel bar framework.

Preferably, the prefabricated slab structure further comprises connecting construction steel bars, wherein the connecting construction steel bars are located between the prefabricated slabs and the post-cast superposed layer and above the abutted seams and used for connecting two adjacent prefabricated slabs.

Preferably, the connection structure reinforcing steel bars are connected with second through long reinforcing steel bars, the second through long reinforcing steel bars are perpendicular to the connection structure reinforcing steel bars, and a plurality of connection structure reinforcing steel bars are arranged along the second through long reinforcing steel bars.

Preferably, the connection length of the connection construction steel bar and any one prefabricated slab is 15-18 times of the steel bar diameter of the connection construction steel bar.

Preferably, the upper end of the spliced seam is provided with an inclined opening, the width of the spliced seam is 50mm-80mm, and the width of the inclined opening is 30mm-40 mm.

Preferably, the first steel bar framework comprises a plurality of first transverse steel bars and a plurality of first longitudinal steel bars, and the first transverse steel bars are vertically connected with the first longitudinal steel bars;

the second steel bar framework comprises a plurality of second transverse steel bars and a plurality of second longitudinal steel bars, and the second transverse steel bars are vertically connected with the second longitudinal steel bars;

the top end of the V-shaped constructional steel bar is connected with the second transverse steel bar, and the first through long steel bar vertically penetrates into the V-shaped constructional steel bar and hooks the V-shaped constructional steel bar.

Preferably, the top end of the truss rib is connected with the second longitudinal steel bar, and the bottom end of the truss rib is connected with the first longitudinal steel bar.

Preferably, the length of the end part of the first through long steel bar anchored into the beam body is 180mm-200 mm.

Preferably, the thickness of the prefabricated plate is 60mm-70mm, and the thickness of the post-cast laminated layer is 60mm-100 mm.

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

1. the utility model discloses a make into the V type with the constructional steel bar between the piece and make it catch on the anchor and go into the internal first through long reinforcing bar of roof beam, can strengthen the prefabricated plate piece equally from this and resist the ability that the fracture warp between, thereby cancel the reservation short-direction reinforcing bar between the traditional prefabricated plate piece, reduced the on-the-spot installation difficulty, eliminated because the construction influence that the reservation reinforcing bar deviation brought.

2. The utility model discloses because the mode that adopts reservation narrower cast-in-place slab band is handled to the piece, reduced template area of contact, and reduced the later stage area of polishing.

Drawings

Fig. 1 is a schematic cross-sectional view of an overall structure of a laminated slab according to a first embodiment of the present invention;

fig. 2 is a schematic cross-sectional view illustrating an overall structure of a laminated plate according to the related art.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example one

Please refer to fig. 1, which illustrates a laminated slab according to an embodiment of the present invention, including a plurality of prefabricated slabs 1 spliced to each other, and a post-cast laminated layer 4 stacked on the plurality of prefabricated slabs 1, a splice 14 is formed between two adjacent prefabricated slabs 1, a first steel bar framework is provided in the prefabricated slab 1, the first steel bar framework includes a plurality of first transverse steel bars 2 and a plurality of first longitudinal steel bars 3, the first longitudinal steel bars 3 are perpendicularly connected to the first transverse steel bars 2, a second steel bar framework is also provided in the post-cast laminated layer 4, the second steel bar framework includes a plurality of second transverse steel bars 5 and a plurality of second longitudinal steel bars 6, and the second transverse steel bars 5 are perpendicularly connected to the second longitudinal steel bars 6.

At least one V-shaped construction steel bar 10 is arranged between two adjacent prefabricated plates 1, the top end of the V-shaped construction steel bar 10 horizontally extends towards two sides and is connected with a second transverse steel bar 5, the bottom end of the V-shaped construction steel bar 10 extends into the spliced seam 14, a first through long steel bar 11 is further arranged in the spliced seam 14, two ends of the first through long steel bar 11 are anchored into beam bodies (not shown) on two sides of the laminated slab, the first through long steel bar 11 vertically penetrates into the V-shaped construction steel bar 10 and hooks the V-shaped construction steel bar 10, and therefore the second steel bar framework of the post-cast laminated layer 4 is fixed, when concrete is poured into the second steel bar framework to form the post-cast laminated layer 4, the V-shaped construction steel bar 10 is matched with the first through long steel bar 11 to limit the post-cast laminated layer 4 to crack at the spliced seam 14. The beam body is installed on the whole laminated slab, and particularly, the length of the end part of the first through-length steel bar 11 anchored into the beam body is preferably 180mm-200 mm. The prefabricated panel 1 preferably has a thickness of 60mm to 70mm, for example 60mm, and the post-cast laminated layer 4 preferably has a thickness of 60mm to 100mm, for example 70 mm.

In addition, for effectively connecting prefabricated plate 1 and post-cast superimposed layer 4, the superimposed sheet still includes truss muscle 9, second longitudinal reinforcement 6 is connected on the top of truss muscle 9, first longitudinal reinforcement 3 is connected to truss muscle 9's bottom, thereby make the reinforcing bar framework in prefabricated plate 1 and the reinforcing bar framework in the post-cast superimposed layer 4 establish stable connection, make again toward second reinforcing bar framework in the middle of pour concrete in order to form the post-cast superimposed layer 4 when, the post-cast superimposed layer 4 can be firmly connected with prefabricated plate 1, avoid taking place to drop between post-cast superimposed layer 4 and the prefabricated plate 1, the phenomenon of fracture.

Meanwhile, in order to facilitate splicing of the prefabricated panels 1, the laminated slab further comprises connecting construction steel bars 7, the connecting construction steel bars 7 are positioned between the prefabricated panels 1 and the post-cast laminated layer 4 and above the seams 14 and are used for connecting two adjacent prefabricated panels 1, namely, the two adjacent prefabricated panels 1 are connected through the connecting construction steel bars 7, so that the two adjacent prefabricated panels 1 form a seam 14 which is pre-positioned and reserved with a proper width, generally, the width of the seam 14 is preferably 50mm-80mm, for example, 50mm, and the upper end of the seam 14 is provided with an inclined opening 15 to facilitate inflow and vibration of concrete, the width of the inclined opening 15 is preferably 30mm-40mm, for example, 30mm, namely, when concrete is poured into the second steel bar framework to form the post-cast laminated layer 4, the concrete also flows into the seam 14 between two adjacent prefabricated panels 1, so as to treat the seam 14 in a cast-in-place manner, therefore, the contact area of the template can be reduced, and the polishing area in the later period is reduced.

Further, the second through-length steel bars 8 are connected to the connecting structural steel bars 7, and the second through-length steel bars 8 are perpendicular to the connecting structural steel bars 7, so that a plurality of connecting structural steel bars 7 can be arranged along the second through-length steel bars 8, and therefore two adjacent prefabricated plates 1 can be connected more stably through the plurality of parallel connecting structural steel bars 7. Meanwhile, in order to ensure the reliability of the connection, the connection length of the connection construction steel bar 7 to any one prefabricated slab 1 is preferably 15 to 18 times the steel bar diameter of the connection construction steel bar 7, thereby ensuring sufficient connection strength of the connection construction steel bar 7 to the prefabricated slab 1.

In summary, the laminated plate in the embodiment has at least the following advantages:

1. the utility model discloses a make into the V type with the constructional steel bar between piece 14 and make it catch on the anchor and go into the internal first through long reinforcing bar 11 of roof beam, can strengthen the ability of resisting the fracture deformation between 1 piece of prefabricated plate 14 from this equally to cancel the reservation short-cut reinforcing bar between 1 piece of traditional prefabricated plate 14, reduced the on-the-spot installation difficulty, eliminated because the construction influence that the reservation reinforcing bar deviation brought. The construction unit adopts the utility model discloses a processing structure handles piece 14, and the on-the-spot fracture phenomenon that does not have after 2 years of construction.

2. The utility model discloses a reserve wide cast-in-place piece of 5cm 14 and make the wide bevel connection 15 of 30mm with 14 upper ends of piece, make things convenient for the inflow and the vibration of concrete, because piece 14 handles the mode that adopts reservation narrower cast-in-place slab band, reduced template area of contact, and reduced the later stage area of polishing.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A laminated slab, comprising:

the post-pouring superposed layer is laminated on the precast slabs and internally provided with a second steel bar framework;

2. A composite slab according to claim 1, further comprising a truss rib, the top end of the truss rib being connected to the second rebar framework and the bottom end of the truss rib being connected to the first rebar framework.

3. A composite slab according to claim 1, further comprising a connecting construction bar between the prefabricated slab and the post-cast laminated layer and above the butt seam for connecting two adjacent prefabricated slabs.

4. A composite slab as claimed in claim 3, wherein a second elongate reinforcing bar is connected to said connector reinforcing bar, said second elongate reinforcing bar being perpendicular to said connector reinforcing bar, a plurality of said connector reinforcing bars being arranged along said second elongate reinforcing bar.

5. A composite slab as claimed in claim 3 or 4, wherein the length of the connection of the connecting construction steel bar to any one of the prefabricated slabs is 15 to 18 times the diameter of the steel bar of the connecting construction steel bar.

6. A laminated board according to claim 1, wherein the upper ends of the edges are provided with bevels, the width of the edges is 50mm to 80mm, and the width of the bevels is 30mm to 40 mm.

7. A composite slab according to claim 2 wherein said first reinforcing structure includes a plurality of first transverse reinforcing bars and a plurality of first longitudinal reinforcing bars, said first transverse reinforcing bars being connected perpendicularly to said first longitudinal reinforcing bars;

8. A composite slab according to claim 7 wherein the top ends of the truss bars are connected to the second longitudinal reinforcing bars and the bottom ends of the truss bars are connected to the first longitudinal reinforcing bars.

9. A composite slab according to claim 1 wherein the end of said first through reinforcing bar is anchored to the body of the beam to a length of 180mm to 200 mm.

10. Laminated slab according to claim 1, characterized in that the thickness of the prefabricated slab is 60mm-70mm and the thickness of the post-cast laminated layer is 60mm-100 mm.