CN218149160U

CN218149160U - Support-free prestressed concrete laminated slab

Info

Publication number: CN218149160U
Application number: CN202222701707.8U
Authority: CN
Inventors: 王示; 张化谅
Original assignee: Shandong Jianzhu University
Current assignee: Shandong Jianzhu University
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2022-12-27
Anticipated expiration: 2032-10-13

Abstract

The utility model discloses an exempt from prestressed concrete superimposed sheet that supports, concretely relates to building engineering technical field, solved among the prior art because the setting of superimposed sheet top precast concrete rib and I-steel, influenced the follow-up pouring and the construction work at the superimposed sheet top of workman, caused the inconvenient problem of construction, realized exempting from to support in the concrete superimposed sheet work progress, the top of superimposed sheet bottom plate does not set up other auxiliary stay simultaneously, can not cause the influence to follow-up workman at the construction work at bottom plate top, concrete scheme is as follows: the utility model provides an exempt from prestressed concrete superimposed sheet that supports, includes the superimposed sheet bottom plate, the superimposed sheet bottom plate sets up the multiunit preformed hole along length direction, and superimposed sheet bottom plate bottom corresponds along its length direction and sets up a plurality of auxiliary support boards, and fixed connector passes auxiliary support board and preformed hole in proper order, fixes the bottom at the superimposed sheet bottom plate with auxiliary support board.

Description

Support-free prestressed concrete laminated slab

Technical Field

The utility model belongs to the technical field of the building engineering technique and specifically relates to a support-free prestressed concrete superimposed sheet.

Background

The building field often uses superimposed sheet component, can reduce the wet operation step in the work progress, saves the construction form and improves the efficiency of construction. However, the rigidity of the bottom plate of the existing prefabricated composite slab member is low, the bending resistance of the bottom plate is poor, supports need to be erected to control the deflection of the composite slab during installation and construction, and especially during installation and construction of the large-span prefabricated composite slab, multiple groups of supports need to be arranged at the bottom of the composite slab, so that the overall construction cost is improved, and the construction efficiency is reduced. Meanwhile, the laminated slab is influenced by self weight and external load in the hoisting and transporting process, and can generate large deflection deformation and even cause cracking of the laminated slab.

Utility model CN214833902U discloses a exempt from to support long prefabricated rib truss muscle coincide structure, and it is through the bending stiffness who sets up the prefabricated rib of concrete with increase superimposed sheet at the top of bottom plate, realizes that the large-span of superimposed sheet avoids supporting the construction, and perhaps further, can dismantle the I-steel at the prefabricated rib upper portion connection of concrete, further increases the bending strength of prefabricated bottom plate. However, in the process of pouring secondary concrete, the pouring height of the concrete needs to be kept in mind all the time, the concrete is prevented from covering the joint of the I-shaped steel and the concrete prefabricated rib, and the follow-up I-shaped steel cannot be detached. Meanwhile, the concrete prefabricated ribs and the I-shaped steel are arranged at the top of the bottom plate, and after the laminated slab is hoisted to a construction area, the concrete prefabricated ribs and the I-shaped steel are arranged at the top of the laminated slab, so that the follow-up pouring and construction work of workers at the top of the laminated slab is interfered, and construction is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a support-free prestressed concrete superimposed sheet, through fixing the bottom at superimposed sheet with the auxiliary supporting plate, the bending resistance of superimposed sheet bottom plate and the rigidity of bottom plate in the superimposed sheet have been strengthened, make the superimposed sheet bottom plate after hoist and mount, when increasing new construction load on the superimposed sheet bottom plate, be difficult for producing too big amount of deflection deformation, realized the support-free of concrete superimposed sheet.

In order to achieve the above purpose, the present invention is realized by the following technical solution:

the utility model provides an exempt from prestressed concrete superimposed sheet that supports, includes the superimposed sheet bottom plate, the superimposed sheet bottom plate sets up the multiunit preformed hole along length direction, and superimposed sheet bottom plate bottom corresponds along its length direction and sets up a plurality of auxiliary support boards, and fixed connector passes auxiliary support board and preformed hole in proper order, fixes the bottom at the superimposed sheet bottom plate with auxiliary support board.

As a further implementation manner, the fixed connecting piece comprises a long screw, a nut is fixed at the bottom of the long screw, the top of the long screw penetrates through the preformed hole and then is matched with the nut, and the nut is abutted to the upper side of the bottom plate of the laminated slab.

As a further implementation mode, a first gasket is arranged between the nut and the laminated slab bottom plate, and a second gasket is arranged between the nut and the laminated slab bottom plate.

As a further implementation, the length of the auxiliary support plate is less than the length of the bottom plate of the laminated slab.

As a further implementation mode, be equipped with the reinforcing bar net in the superimposed sheet bottom plate, the reinforcing bar net includes a plurality of horizontal reinforcing bars and the vertical reinforcing bar that evenly set up in the superimposed sheet bottom plate inside, auxiliary stay board and horizontal reinforcing bar parallel arrangement.

As a further implementation manner, the top of the steel bar mesh is provided with a truss steel bar, the truss steel bar comprises a web member steel bar, the top of the web member steel bar is connected with an upper chord steel bar, the bottom of the web member steel bar is connected with two lower chord steel bars, and the lower chord steel bars are located inside the bottom plate.

As a further implementation, the truss reinforcement is arranged in parallel with the auxiliary support plate.

As a further implementation mode, the distance from the end part of the auxiliary supporting plate to the end part of the bottom plate of the laminated slab is 5cm-50cm, and the transverse steel bars are prestressed steel bars.

As a further implementation mode, the thickness of the auxiliary supporting plate is 8cm-20cm.

As a further implementation mode, each group of the preformed holes are uniformly distributed in the length direction of the bottom plate of the laminated slab.

Above-mentioned the utility model has the advantages as follows:

1. the utility model discloses a fix the bottom at the superimposed sheet bottom plate with the auxiliary supporting plate, strengthened the bending resistance of superimposed sheet medium bottom plate and the rigidity of superimposed sheet bottom plate, the superimposed sheet bottom plate is difficult for producing too big amount of deflection deformation at the in-process of hoist and mount, has realized exempting from of concrete superimposed sheet work progress and has supported, and the top of superimposed sheet bottom plate does not set up other auxiliary stay simultaneously, can not cause the influence to follow-up workman at the construction work at bottom plate top.

2. The utility model discloses a horizontal reinforcing bar is the prestressed reinforcement, and the cooperation auxiliary stay board can be applicable to the large-span construction in order to guarantee the superimposed sheet.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.

Fig. 1 is a front view of a concrete composite slab without support according to an embodiment of the present invention.

FIG. 2 is a front view of a concrete composite slab without support according to another embodiment of the present invention

Fig. 3 is a top view of the laminated plate according to the embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a fixed connecting member in an embodiment of the present invention.

In the figure: the spacing or dimensions between each other are exaggerated to show the location of the various parts, and the schematic is shown only schematically.

Wherein: 1. the composite slab comprises a laminated slab bottom plate, 2 transverse steel bars, 3 longitudinal steel bars, 4 preformed holes, 5 long screws, 6 gaskets, 7 nuts, 8 auxiliary supporting plates, 9 laminated slabs and 10 fixed connecting pieces.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Example one

The utility model discloses an among the typical embodiment, refer to fig. 1-4 and show, a support-free prestressed concrete superimposed sheet, including superimposed sheet bottom plate 1, superimposed sheet bottom plate 1 sets up multiunit preformed hole 4 along length direction, and each group's preformed hole evenly distributed on superimposed sheet bottom plate 1 length direction, and superimposed sheet bottom plate 1's bottom sets up a plurality of auxiliary support plate 8 along its length direction correspondence, and auxiliary support plate 8's length is less than superimposed sheet bottom plate 1 length, and fixed connection spare 10 passes auxiliary support plate 8 and preformed hole 4 in proper order, fixes auxiliary support plate 8 in superimposed sheet bottom plate 1's bottom.

As shown in fig. 1 and 3, a reinforcing mesh is arranged in the laminated slab base plate 1, the reinforcing mesh includes a plurality of transverse reinforcing bars 2 and longitudinal reinforcing bars 3 uniformly arranged inside the laminated slab base plate 1, and the auxiliary supporting plate 8 is arranged in parallel with the transverse reinforcing bars 2. The transverse steel bars 2 are prestressed steel bars to improve the rigidity of the laminated slab.

As shown in fig. 4, the fixed connecting member 10 includes a long screw rod 5, a nut is fixed at the bottom of the long screw rod 5, the top of the long screw rod 5 passes through the prepared hole 4 and then is matched with the nut 7, and the nut 7 abuts against the top surface of the laminated slab base plate 1.

Through the cooperation of long screw 5 and nut 7, realized fixing the bottom at superimposed sheet bottom plate 1 with the auxiliary supporting board, the bending resistance of superimposed sheet bottom plate 1 and the rigidity of bottom plate in superimposed sheet 9 have been strengthened, make superimposed sheet bottom plate 1 after the hoist and mount is accomplished, when loading new construction load on the superimposed sheet bottom plate 1, be difficult for producing too big amount of deflection deformation, the construction step of the bottom sprag of superimposed sheet bottom plate 1 has been saved, the support exempts from in the concrete superimposed sheet work progress has been realized. The top of the laminated slab bottom plate 1 is not provided with other auxiliary supports, so that the subsequent construction work of workers on the top of the bottom plate is not influenced.

In order to ensure the stability of the auxiliary supporting plate and the laminated slab bottom plate 1, a gasket 6 is added, wherein a first gasket is arranged between the nut 7 and the laminated slab bottom plate 1. And a second gasket is arranged between the screw cap and the laminated slab bottom plate 1.

In another example, the top of the steel bar mesh is provided with truss steel bars, the truss steel bars comprise web member steel bars, the top of the web member steel bars is connected with the upper chord steel bars, the bottom of the web member steel bars is connected with the two lower chord steel bars, and the lower chord steel bars are positioned inside the bottom plate. The truss reinforcing steel bars and the auxiliary supporting plates are arranged in parallel, and the lower chord reinforcing steel bars are poured and embedded into the bottom plate 1 of the laminated slab in the pouring process of the laminated slab, so that an integral stressed laminated slab component is formed. The arrangement of the truss reinforcing steel bars has the effect of ensuring the vertical rigidity of the laminated slab, and the bearing capacity of the laminated slab is improved. It will be appreciated that the arrangement of the truss reinforcement is prior art.

The auxiliary supporting plate 8 of this embodiment may be a wood plate on the construction site, or a plate made of other materials, and the distance from the end of the wood plate to the end of the bottom plate is 5cm-50cm, preferably 20cm. The length of auxiliary supporting plate, that is, each end of auxiliary supporting plate is 20cm away from the end part of the bottom plate of the laminated slab, so that the laminated slab can be assembled conveniently, and the auxiliary supporting plate can not influence the assembly of the laminated slab. The thickness of the auxiliary support plate 8 is 8cm-20cm, preferably 15cm, to ensure that the auxiliary support plate provides sufficient strength to the laminated floor 1.

In the process of pouring the bottom plate by using concrete, the laminated slab 9 shown in fig. 3 is provided with 6 preformed

holes

4,3 preformed holes 4 are arranged into one group, and the preformed holes 4 in each group are arranged into two groups, wherein the straight line of each group of the preformed holes 4 is parallel to the length direction of the bottom plate 1. The intervals of the preformed holes 4 of each group are the same, and the preformed holes 4 at the middle position in each group of preformed holes 4 are also arranged at the middle position of the laminated slab bottom plate 1. If each group of the preformed holes 4 is even, the preformed holes 4 on both sides of the connecting line of the middle points of the two long sides of the laminated slab bottom plate 1 are symmetrical about the central line. The preformed holes 4 of the central line both sides are the same in quantity to guarantee that the preformed holes 4 are rationally distributed on the superimposed sheet bottom plate 1.

The superimposed sheet bottom plate 1 of this embodiment can set up the truss reinforcing bar, also can not set up the truss reinforcing bar, and when setting up the truss reinforcing bar, each group preformed hole sets up the one side at the truss reinforcing bar. Through the arrangement of the auxiliary supporting plate, the rigidity of the laminated slab bottom plate 1 is improved, the deflection-resistant deformation capacity of the laminated slab bottom plate 1 is enhanced, a bottom plate support is not required to be arranged, and the cost is saved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a support-free prestressed concrete superimposed sheet, a serial communication port, including the superimposed sheet bottom plate, the superimposed sheet bottom plate sets up the multiunit preformed hole along length direction, and superimposed sheet bottom plate bottom corresponds along its length direction and sets up a plurality of auxiliary support boards, and fixed connection spare passes auxiliary support board and preformed hole in proper order, fixes auxiliary support board in the bottom of superimposed sheet bottom plate.

2. The support-free prestressed concrete laminated slab as claimed in claim 1, wherein said fixing connector comprises a long screw, a nut is fixed to the bottom of the long screw, the top of the long screw passes through the prepared hole and then is engaged with the nut, and the nut abuts against the upper side of the laminated slab bottom plate.

3. The free-standing prestressed concrete composite slab as claimed in claim 2, wherein a first spacer is disposed between said nut and said bottom slab of the composite slab, and a second spacer is disposed between said nut and said bottom slab of the composite slab.

4. A support-free prestressed concrete composite slab as claimed in claim 1, wherein the length of said auxiliary supporting plate is less than the length of the bottom plate of said composite slab.

5. The free-standing prestressed concrete composite slab as claimed in claim 1, wherein said bottom plate is provided with a reinforcing mesh, said reinforcing mesh comprising a plurality of transverse reinforcing bars and longitudinal reinforcing bars uniformly arranged inside the bottom plate of the composite slab, and said auxiliary supporting plate is arranged in parallel with the transverse reinforcing bars.

6. The free-standing prestressed concrete composite slab as claimed in claim 5, wherein said reinforcing mesh has truss reinforcing bars on top, said truss reinforcing bars include web members, said web members have top portions connected to upper chord reinforcing bars and bottom portions connected to two lower chord reinforcing bars, said lower chord reinforcing bars are located inside the bottom slab of the composite slab.

7. A free-standing prestressed concrete composite slab as claimed in claim 6, wherein said truss reinforcement is disposed in parallel with said auxiliary supporting plate.

8. The free-standing prestressed concrete composite slab as claimed in claim 5, wherein the distance from the end of said auxiliary supporting plate to the end of the bottom plate of the composite slab is 5cm-50cm, and said transverse reinforcing bars are prestressed reinforcing bars.

9. The free-standing prestressed concrete composite slab as claimed in claim 8, wherein said auxiliary supporting plate has a thickness of 8cm-20cm.

10. The free-standing prestressed concrete laminated slab as claimed in claim 1, wherein each group of said preformed holes are uniformly distributed along the length direction of the bottom slab of the laminated slab.