Ribbed prestressed laminated slab

Abstract

The utility model belongs to the field of plates, particularly relates to a ribbed prestressed laminated slab, and aims to solve the problems of complex structure, low production efficiency and high labor consumption in the prior art. The bottom of the quadrilateral steel bar truss is fixedly embedded in the top of the prestressed precast slab; the upper chord rib plate is fixed at the top of the quadrilateral steel bar truss; the rib plate preformed holes are formed in the tops of the upper chord rib plates; the U-shaped bolts penetrate through rib plate preformed holes of the upper chord rib plates, and the quadrilateral steel bar trusses are connected with the upper chord rib plate bolts through the U-shaped bolts, so that the problems of multiple procedures, low production efficiency, long production period and the like in the manufacturing process of the prestressed laminated slabs are solved, the product quality is improved, standardized and specialized labor division and combined forming are adopted, and the production cost is reduced. Large-scale standardized production improves production efficiency, and the purposes of reducing cost and improving efficiency are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of board material, especially to a ribbed prestressed laminated slab. BACKGROUND

[0002] At present, the laminated slab commonly used in the prefabricated building market is a steel bar truss laminated slab, the prefabricated thickness is 60-70mm, the laminated layer thickness is 70-80mm, and the total floor thickness is 140-150mm, the floor is produced in a customized mode, the efficiency is low, and the economic benefit is relatively poor.

[0003] The prestressed ribbed laminated slab is an economical and efficient laminated slab, compared with the ordinary laminated slab, has the advantages of thin bottom plate, small total thickness, light weight, large rigidity and large span capacity, can be densely spliced, can be designed and used as bidirectional plate or unidirectional plate, and the performance is very superior.

[0004] However, the prestressed ribbed laminated slab has a complex structure, low normal production efficiency, high cost caused by high labor cost, and the like, which affects its large-scale application.

[0005] In summary, the prior art has the following problems: the prestressed ribbed laminated slab has a complex structure and is difficult to be integrally poured and formed; the manufacturing process is complex, and a lot of labor is consumed; the existence of the ribbed plate causes uneven vibration of the integrally poured concrete, affecting the quality; the integral manufacturing method is prone to large prestress reverse arch, affecting use; the production cycle is long, the site occupation is large, and it is difficult to adapt to large-scale use requirements; the prefabricated plates are densely spliced and installed, the splicing joints are difficult to eliminate, the cracking probability is high in the later period, and the quality is affected. UTILITY MODEL CONTENTS

[0006] The utility model aims at solving the defects of complex structure, low production efficiency and high labor cost in the prior art, and provides a ribbed prestressed laminated slab.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0008] A ribbed prestressed laminated slab comprises

[0009] A prestressed prefabricated plate;

[0010] A quadrilateral steel bar truss, the bottom of the quadrilateral steel bar truss is embedded in the top of the prestressed prefabricated plate;

[0011] An upper chord ribbed plate, the upper chord ribbed plate is fixed to the top of the quadrilateral steel bar truss;

[0012] A ribbed plate reserved hole, the ribbed plate reserved hole is arranged in the top of the upper chord ribbed plate;

[0013] The U-shaped bolt is arranged in a rib plate reserved hole of the upper chord rib plate, and the quadrilateral steel bar truss is bolted with the upper chord rib plate through the U-shaped bolt, thereby solving the problems of many processes, low production efficiency and long production cycle in the manufacturing process of the prestressed composite slab, improving the quality of the product, and achieving the purposes of cost reduction and benefit increase.

[0014] As a preferred scheme of the utility model, the quadrilateral steel bar truss comprises a steel bar truss top chord, a steel bar truss bottom chord, a reinforcing inclined bar and a steel bar truss web, the steel bar truss top chord and the steel bar truss bottom chord are both provided with two, the top end and the bottom end of the reinforcing inclined bar are welded with the surfaces of the steel bar truss top chord and the steel bar truss bottom chord respectively, the two ends of the steel bar truss web are welded with the surfaces of the two steel bar truss top chords respectively, the steel bar truss top chord and the steel bar truss bottom chord are connected and fixed through the reinforcing inclined bar, the strength of both is enhanced, and the reinforcing structure of the two ends of the steel bar truss web is connected.

[0015] As a preferred scheme of the utility model, the steel bar truss bottom chord is embedded in the inside of the prestressed prefabricated slab, the reinforcing inclined bars are abutted and welded, and the steel bar truss bottom chord is embedded in the prestressed prefabricated slab, thereby facilitating subsequent installation.

[0016] As a preferred scheme of the utility model, the steel bar truss top chord is located at the inside of the U-shaped bolt, the steel bar truss top chord is bolted with the prestressed prefabricated slab through the U-shaped bolt, and the U-shaped bolt is mainly used for connecting and fixing the steel bar truss top chord and the prestressed prefabricated slab.

[0017] As a preferred scheme of the utility model, the top of the upper chord rib plate is bonded with a shielding plate, the rib plate reserved holes of the top of the upper chord rib plate are in pairs, the prestressed prefabricated slab, the upper chord rib plate, the quadrilateral steel bar truss and the U-shaped bolt are all made and assembled into shape by factory parts, and the shielding plate is used for shielding the top of the upper chord rib plate.

[0018] As a preferred scheme of the utility model, the top of the upper chord rib plate is bonded with a shielding plate, the rib plate reserved holes of the top of the upper chord rib plate are in pairs, the prestressed prefabricated slab, the upper chord rib plate, the quadrilateral steel bar truss and the U-shaped bolt are all made and assembled into shape by factory parts, and the shielding plate is used for shielding the top of the upper chord rib plate.

[0019] Beneficial effects:

[0020] Solve the problem of many processes, low production efficiency, long production cycle and other problems in the production process of prestressed composite slab, improve the quality of products, adopt standardization, professional division of labor, combination forming, large-scale standardized production improve production efficiency, achieve the purpose of reducing cost and increasing benefit. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the perspective view of the prestressed precast slab of the utility model;

[0022] Figure 2 It is the perspective view of the upper chord rib plate of the utility model;

[0023] Figure 3 It is the perspective view of the quadrilateral steel bar truss of the utility model;

[0024] Figure 4 It is the overall perspective view of the utility model;

[0025] Figure 5 It is the front view of the prestressed precast slab of the utility model.

[0026] In the drawing: 1, prestressed precast slab; 2, upper chord rib plate; 21, rib plate reserved hole; 3, quadrilateral steel bar truss; 31, steel bar truss upper chord; 32, steel bar truss lower chord; 33, reinforcing inclined bar; 34, steel bar truss web; 4, U-shaped bolt; 5, heightening pad; 6, shielding plate. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0028] EMBODIMENT

[0029] REFERENCE Figures 1-5 A ribbed prestressed composite slab, comprising

[0030] The prestressed precast slab 1;

[0031] The quadrilateral steel bar truss 3 is embedded at the bottom of the prestressed precast slab 1;

[0032] The upper chord rib plate 2 is fixed at the top of the quadrilateral steel bar truss 3;

[0033] The rib plate reserved hole 21 is arranged at the top of the upper chord rib plate 2;

[0034] The U-shaped bolt 4 is arranged through the rib plate reserved hole 21 of the upper chord rib plate 2, and the quadrilateral steel bar truss 3 is bolted to the upper chord rib plate 2 through the U-shaped bolt 4.

[0035] By the above structure: solve the problem of many processes, low production efficiency, long production cycle and other problems in the production process of prestressed composite slab, improve the quality of the product, adopt standardized, specialized division of labor, combination forming, large-scale standardized production improve production efficiency, achieve the purpose of reducing cost and increasing benefit, which is different from other ribbed slab processing methods. It is not once formed, but the upper ribbed slab and the lower slab are made by standard process (ultra-long specification, such as 12 meters, 15 meters, etc.), and then cut according to the needs, and the upper and lower slabs are assembled and formed.

[0036] Please refer to Figure 3 The quadrilateral steel bar truss 3 includes a steel bar truss top chord 31, a steel bar truss bottom chord 32, a reinforcing inclined rib 33, and a steel bar truss web 34. The steel bar truss top chord 31 and the steel bar truss bottom chord 32 are each provided with two. The top end and the bottom end of the reinforcing inclined rib 33 are welded to the surface of the steel bar truss top chord 31 and the steel bar truss bottom chord 32, respectively. The two ends of the steel bar truss web 34 are welded to the surface of the two steel bar truss top chords 31, respectively. The steel bar truss top chord 31 and the steel bar truss bottom chord 32 are connected and fixed by the reinforcing inclined rib 33 to enhance the strength of the two. The steel bar truss web 34 connects the reinforcing structures at both ends.

[0037] Please refer to Figure 1 The steel bar truss bottom chord 32 is embedded in the prestressed prefabricated slab 1, and the reinforcing inclined ribs 33 are welded between each other. The steel bar truss bottom chord 32 is embedded in the prestressed prefabricated slab 1, which facilitates subsequent installation.

[0038] Please refer to Figure 5 The steel bar truss top chord 31 is located on the inner side of the U-shaped bolt 4. The steel bar truss top chord 31 is bolted to the prestressed prefabricated slab 1 through the U-shaped bolt 4. The U-shaped bolt 4 is mainly used for connecting and fixing the steel bar truss top chord 31 and the prestressed prefabricated slab 1.

[0039] Please refer to Figure 2 The bottom of the top chord ribbed slab 2 and the top of the prestressed prefabricated slab 1 are filled with heightening pads 5. The thickness of the heightening pads 5 is determined according to different slab thicknesses. It is suitable for different slab thicknesses. It increases the gap between the top chord ribbed slab 2 and the prestressed prefabricated slab 1, and increases the stiffness of the prestressed prefabricated slab 1, so that the prefabricated slab has greater span capacity.

[0040] Please refer to Figure 2 The top of the top chord ribbed slab 2 is bonded with a shielding plate 6. The ribbed slab reserved holes 21 of the top of the top chord ribbed slab 2 are in pairs. The prestressed prefabricated slab 1, the top chord ribbed slab 2, the quadrilateral steel bar truss 3, and the U-shaped bolt 4 are all made and assembled into shape by factory parts. The shielding plate 6 is used to shield the top of the top chord ribbed slab 2.

[0041] The manufacturing steps of the utility model are as follows: the prestressed prefabricated slab 1 is a standardized prestressed bottom plate produced by a professional production line, the standard size of the prestressed prefabricated slab 1 is determined as 12x1.2 (1.5, 1.8, 2.1, 2.4) m and the like, the thickness is 30-40 mm, a quadrilateral steel bar truss 3 of fixed size and not less than one is pre-buried and fixed on the prestressed prefabricated slab 1, the number and spacing are fixed according to the different width of the prestressed prefabricated slab 1, which is convenient for standardized production, the top chord rib plate 2 with a reserved hole 21 of a rib plate is prefabricated independently, the top chord rib plate 2 is made of high-strength concrete, and structural steel bars are arranged inside according to design requirements, or high-strength concrete can be filled in the thin-walled U-shaped steel, the rib plate reserved hole 21 of the prestressed prefabricated slab 2 is designed to reserve connecting bolts, the number, diameter and spacing of the holes are determined according to design requirements, the top chord rib plate 2 is prefabricated in advance, the size is fixed, and after prefabrication, the whole is stored, when used, the prestressed prefabricated slab 1 is cut to the required length, the prestressed prefabricated slab 1 is cut to the required length, the maximum length is not more than 12 meters, the top chord rib plate 2 of the corresponding length is cut at the same time, the prestressed prefabricated slab 1 of the required length is placed on a special platform, the top chord rib plate 2 of the corresponding length is placed on the top chord steel bar of the steel bar truss 3, the U-shaped bolt 4 passes through the steel bar truss top chord 31 of the quadrilateral steel bar truss 3 and the reserved hole 21 of the top chord rib plate 2, and the U-shaped bolt 4 is tightened with a nut after passing through the top chord rib plate 2, the top chord rib plate 2 and the steel bar truss top chord 3 are connected into a whole, the assembly of the ribbed laminated slab is completed, a special lifting tool is used to pass through the gap of the quadrilateral steel bar truss 3 between the prestressed prefabricated slab 1 and the top chord rib plate 2, hoisting, transportation, storage and waiting for delivery or on-site installation are carried out.

[0042] The above is only the preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the technical field can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A ribbed prestressed composite slab, characterized by, The utility model relates to a prestressed precast slab (1); A quadrilateral steel bar truss (3) is embedded at the bottom of the prestressed precast slab (1); A top chord rib plate (2) is fixed at the top of the quadrilateral steel bar truss (3); A rib plate reserved hole (21) is arranged at the top of the top chord rib plate (2); A U-shaped bolt (4) is arranged through the rib plate reserved hole (21) of the top chord rib plate (2), and the quadrilateral steel bar truss (3) is bolted with the top chord rib plate (2) through the U-shaped bolt (4). The quadrilateral steel bar truss (3) comprises a steel bar truss top chord (31), a steel bar truss bottom chord (32), a reinforcing inclined bar (33) and a steel bar truss web member (34), the steel bar truss top chord (31) and the steel bar truss bottom chord (32) are both provided with two, the top end and the bottom end of the reinforcing inclined bar (33) are welded with the surfaces of the steel bar truss top chord (31) and the steel bar truss bottom chord (32) respectively, and the two ends of the steel bar truss web member (34) are welded with the surfaces of the two steel bar truss top chords (31) respectively.

2. The ribbed prestressed composite slab as claimed in claim 1, wherein, The steel bar truss bottom chord (32) is embedded in the inside of the prestressed precast slab (1), and the reinforcing inclined bars (33) are welded against each other.

3. The ribbed prestressed composite slab as claimed in claim 2, wherein, The steel bar truss top chord (31) is located at the inner side of the U-shaped bolt (4), and the steel bar truss top chord (31) is bolted with the prestressed precast slab (1) through the U-shaped bolt (4).

4. The ribbed prestressed composite slab as claimed in claim 2, wherein, The bottom of the top chord rib plate (2) and the top of the prestressed precast slab (1) are filled with a heightening cushion block (5).

5. The ribbed prestressed composite slab as claimed in claim 2, wherein, The top of the top chord rib plate (2) is bonded with a shielding plate (6), the rib plate reserved holes (21) at the top of the top chord rib plate (2) are arranged in pairs, and the prestressed precast slab (1), the top chord rib plate (2), the quadrilateral steel bar truss (3) and the U-shaped bolt (4) are all made and assembled into shape by factory parts.

6. The ribbed prestressed composite slab as claimed in claim 1, wherein, ​

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