CN218541176U

CN218541176U - Disassembly-free bottom die laminated slab

Info

Publication number: CN218541176U
Application number: CN202222710535.0U
Authority: CN
Inventors: 曹继涛; 余嘉豪; 张思海; 邓明科; 田婷
Original assignee: Xi'an Wuhe New Material Technology Group Co ltd
Current assignee: Xi'an Wuhe New Material Technology Group Co ltd
Priority date: 2022-10-14
Filing date: 2022-10-14
Publication date: 2023-02-28
Anticipated expiration: 2032-10-14

Abstract

The present disclosure relates to a disassembly-free bottom die laminated slab, which comprises: the bottom plate is a flat plate with a preset thickness; the reinforcing mesh is arranged on the bottom plate; the steel bar truss comprises an upper chord steel bar, a lower chord steel bar and a bent web bar, the top end of the web bar is fixedly connected with the upper chord steel bar, the lower chord steel bar is fixedly connected with a steel bar net, the lower chord steel bar is fixed at a position close to the bottom end of the web bar, the bottom end of the lower chord steel bar is bent, and the web bar of the bent part is in a preset included angle with the horizontal plane. In the embodiment, the steel bar truss and the steel bar mesh are arranged on the bottom plate, so that the connection strength between the bottom plate and the steel bar truss and between the bottom plate and the steel bar mesh is enhanced; and set up the form web muscle of buckling in web muscle bottom department, further strengthened joint strength. During construction, the bottom die does not need to be removed, and the construction process is simplified. And meanwhile, adverse effects caused by the relaxation of the prestress are avoided, and the durability of the laminated slab is improved.

Description

Disassembly-free bottom die laminated slab

Technical Field

The embodiment of the disclosure relates to the technical field of buildings, in particular to a disassembly-free bottom die laminated slab.

Background

The truss reinforced concrete composite slab is an advanced floor slab form, belongs to the field of housing industrialization, and is widely applied to the current housing construction.

The construction process of the traditional structural floor slab mainly adopts two forms of cast-in-place and prefabrication. The cast-in-place reinforced concrete structure has good integrity and better seismic performance, but has high requirement on the template, the support of the template needs to consume longer time, and the industrial production is difficult to realize. The prefabricated reinforced concrete structure can realize industrial production in a factory, is not influenced by seasons and weather, accelerates the construction speed, but has poor integrity and seismic resistance compared with a cast-in-place structure. Therefore, the two traditional construction processes cannot meet the requirement of the industrial development of the house.

The laminated slab is produced on the basis of the cast-in-place construction process and the prefabricated construction process, integrates the advantages of the cast-in-place construction process and the prefabricated construction process, and is widely applied to actual engineering nowadays. The laminated slab structure is a combination form of combining cast-in-place and prefabrication processes, and the fabricated building is widely applied and developed at home and abroad due to the advantages of high prefabrication degree, convenient and fast construction, good economic effect, less environmental pollution and the like.

However, the thickness of the precast slab of the steel bar truss composite slab is not smaller than 60mm, so that the space below the truss is small under the condition of thin slab, and the requirement of pre-burying of a water and electricity pipeline is difficult to meet. In order to meet the requirement of pre-buried pipelines, the plate thickness needs to be increased, the self weight of the building is further increased, and the manufacturing cost of a single square meter is improved. Secondly truss reinforced concrete superimposed sheet need set up the beard muscle all around, has increased the construction degree of difficulty when the construction installation, and the efficiency of construction is low, and the cost promotes by a wide margin. In addition, the truss reinforced concrete composite slab is easy to crack, so that the length of the floor slab is short, and the production and hoisting cost is increased.

Compared with the steel pipe truss prestressed concrete laminated slab, the steel pipe truss prestressed concrete laminated slab has the advantages that the thickness of the prefabricated bottom plate is reduced by utilizing the prestress technology, but the prestress tension process is increased in the factory processing process, and the prestressed reinforcement has the phenomenon of stress relaxation and the like under the aging effect. The problems that the production process is complicated and the prestress reliability of the prefabricated base plate is reduced along with time are solved.

Accordingly, there is a need to ameliorate one or more of the problems with the above-mentioned related art solutions.

It is noted that this section is intended to provide a background or context to the disclosure as recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.

SUMMERY OF THE UTILITY MODEL

An object of embodiments of the present disclosure is to provide a disassembly-free bottom die laminate, thereby overcoming, at least to some extent, one or more of the problems due to the limitations and disadvantages of the related art.

The embodiment of the present disclosure provides a disassembly-free bottom die laminated slab, including:

the bottom plate is a flat plate with a preset thickness;

the reinforcing mesh is arranged on the bottom plate; and

the steel bar truss, the steel bar truss includes last quarter reinforcing bar, last quarter reinforcing bar and the fashioned web member of buckling, the top of web member with last quarter reinforcing bar fixed connection, last quarter reinforcing bar with reinforcing bar net fixed connection, last quarter reinforcing bar is fixed and is close to the position of web member bottom, the bottom of last quarter reinforcing bar is the form of buckling, buckle the form part the web member is personally submitted with the level and is preset the contained angle.

Preferably, the web of the bent portion is curved or dog-leg shaped.

Preferably, the web of the bent portion is parallel to a horizontal plane.

Preferably, the web of the bent portion is located below the lower chord member.

Preferably, the mesh reinforcement is located above the lower chord steel bar.

Preferably, at least part of the web of the bent portion is embedded in the bottom plate.

Preferably, the base plate is a composite base plate.

Preferably, the thickness of the bottom plate is 4 mm-30 mm, the width is 600mm-4000mm, and the length is 1000mm-18000mm.

Preferably, the height of the steel bar truss is 70-270mm, and the width of the steel bar truss is 60-100mm.

Preferably, the diameters of the upper chord steel bars and the lower chord steel bars are 6-20mm, and the diameters of the web bars are 4-7mm.

The utility model provides a technical scheme can include following beneficial effect:

the disassembly-free bottom die laminated slab of the utility model strengthens the connection strength between the bottom plate and the steel bar truss and the steel bar mesh by arranging the steel bar truss and the steel bar mesh on the bottom plate; and set up the form web muscle of buckling in web muscle bottom department, further strengthened joint strength. During construction, the bottom die does not need to be removed, and the construction process is simplified. And meanwhile, adverse effects caused by the relaxation of the prestress are avoided, and the durability of the laminated slab is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

Fig. 1 shows a schematic structural view of a disassembly-free bottom mold laminate in an exemplary embodiment of the disclosure;

fig. 2 shows a schematic structural view of a steel bar truss in an exemplary embodiment of the present disclosure.

Reference numerals:

100. a base plate; 200. a reinforcing mesh; 300. a steel bar truss; 301. upper chord steel bars; 302. a lower chord steel bar; 303. the abdominal muscle.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the drawings are merely schematic illustrations of embodiments of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities.

In an exemplary embodiment, a disassembly-free bottom mold laminated slab is provided, referring to fig. 1, which may include: a base plate 100, a mesh reinforcement 200, and a steel bar truss 300.

Specifically, the base plate 100 is a flat plate having a predetermined thickness. In some embodiments, the thickness of the bottom plate 100 is 4mm to 30mm, for example, 6mm, 10mm, 15mm, 20mm, etc., but is not limited thereto. The bottom plate 100 of the present application has a small thickness and is a thin bottom plate. The width of the base plate 100 is 600mm to 4000mm, and may be, for example, 1000mm, 1500mm, 2000mm, 3000mm, or the like. The length of the base plate 100 is 1000mm to 18000mm, and for example, it may be 3000mm, 5000mm, 10000mm, 15000mm, etc.

The diameter of the steel bar of the mesh reinforcement 200 may be 6 to 20mm, for example, 10mm, 15mm, etc. The mesh size of the mesh reinforcement 200 can be adjusted according to actual needs, and is not particularly limited in this application. The mesh reinforcement 200 is disposed on the base plate 100.

Referring to fig. 2, the steel bar truss 300 includes an upper chord steel bar 301, a lower chord steel bar 302 and a bent web 303, and the upper chord steel bar 301 and the lower chord steel bar 302 are fixedly connected through the web 303. Specifically, the top end of the web member 303 is fixedly connected to the upper chord steel 301, the lower chord steel 302 is fixedly connected to the mesh reinforcement 200, and the lower chord steel 302 is fixed to a position near the bottom end of the web member 303. The bottom end of the lower chord steel bar 302 is bent, and the web rib 303 of the bent part and the horizontal plane form a preset included angle, for example, a small angle, such as 3 degrees or 5 degrees, can be set between the bent part and the horizontal plane.

In this embodiment, the steel bar truss 300 and the steel bar mesh 200 are arranged on the base plate 100, so that the connection strength between the base plate 100 and the steel bar truss 300 and the steel bar mesh 200 is enhanced; and the bottom end of the web rib 303 is provided with a bending web rib 303, so that the connection strength is further enhanced. During construction, the bottom die does not need to be removed, and the construction process is simplified. And meanwhile, adverse effects caused by the relaxation of the prestress are avoided, and the durability of the laminated slab is improved.

Optionally, in some embodiments, the web 303 of the bending portion is arc-shaped or zigzag-shaped, and may be, for example, circular arc, elliptical arc, V-shaped, U-shaped, S-shaped, and the like, but is not limited thereto. This shape is simple in manufacturing process, and the joint surface between the bent portion web 303 and the bottom plate 100 can be enlarged, thereby improving the connection strength therebetween.

Optionally, in some embodiments, the web 303 of the bent portion is horizontal to the horizontal plane, so as to maximize the connection strength between the web 303 of the bent portion and the bottom plate 100. Optionally, in some embodiments, the web 303 of the bent portion is located below the lower chord 302. Additionally, optionally, in some embodiments, the mesh reinforcement 200 is positioned above the lower chord 302. The web bars 303, the lower chord steel bars 302 and the reinforcing mesh 200 at the bent parts can be connected in a welding manner, and the web bars 303, the lower chord steel bars 302 and the reinforcing mesh 200 are pre-embedded on the bottom plate 100 after being welded, so that the bottom plate 100 does not need to be welded, the problem of later-stage pouring and slurry leakage caused by welding spots penetrating through the bottom plate 100 is avoided, and the bottom die is also prevented from being detached. Further, at least a part of the web 303 of the bent portion is embedded in the bottom plate 100. For example, the pre-buried thickness of the web 303 of the bent portion may be 3mm to 10mm, for example, 5mm, 8mm, or the like. The web ribs 303 of the bent portions are embedded in the bottom plate 100,

optionally, in some embodiments, the floor 100 is a composite floor, such as high ductility concrete. The high-ductility concrete can comprise the following basic components in parts by weight: 1 part of sand, 0.1-0.2 part of fly ash, 0.6-0.8 part of cement, 0.1-0.2 part of silica fume and 0.16-0.22 part of water. In addition, the high-ductility concrete further comprises the following auxiliary components in volume content: 1-2% by volume of the base component of fibres. The high-ductility concrete has high strength, high durability, high ductility and crack control capability, is beneficial to reducing the thickness of the prefabricated bottom plate 100, has light weight of prefabricated components, is convenient for production, transportation and installation construction, and reduces the construction measure cost. Due to the excellent mechanical property of the high-ductility concrete, the span of the prefabricated bottom plate can be increased under the condition of a thinner plate, the large-span prefabricated bottom plate is realized, the abutted seams in a room are reduced, the number of times of form removal, hoisting and installation is reduced while the delivery quality of the engineering is improved, and the construction is convenient. By utilizing the excellent tensile capacity and crack control capacity of the high-ductility concrete, the cracking problem of the prefabricated bottom plate in the production, transportation and installation construction processes can be avoided only by changing the bottom plate material, and prestress is not required to be applied. The high-ductility concrete material is adopted as the prefabricated bottom plate, on one hand, the high-ductility concrete has excellent durability, and on the other hand, a prestressing process is not adopted, so that stress relaxation does not exist, and the prefabricated bottom plate has excellent durability. The bottom plate 100 of the application is thin, the post-cast is formed into the overlapped plate, the plate thickness is intersected in the traditional scheme, the plate thickness is small, and the clearance height of a house is improved.

Optionally, in some embodiments, the thickness of the bottom plate 100 is 4mm to 30mm, the width is 600mm to 4000mm, and the length is 1000mm to 18000mm. The bottom plate 100 of the specification is thin, so that the space for the special pipeline which can be penetrated under the steel bar truss is increased, and the field construction is facilitated. Because the bottom plate 100 is thin, the beard ribs can not extend out of the periphery, the stress state of the two-way plate can be formed under the condition of close splicing plate joints by a steel bar lapping mode, and the splicing joints have no post-pouring areas, and can be provided with leveling crossbeams for leveling, so that the construction quality is ensured, and meanwhile, the construction process is simplified.

Optionally, in some embodiments, the steel bar truss 300 has a height of 70-270mm and a width of 60-100mm.

Optionally, in some embodiments, the diameter of the upper-chord steel bar 301 and the lower-chord steel bar 302 is 6-20mm, for example, 10mm, 12mm, 15mm, etc., but is not limited thereto. The diameter of the web 303 is 4 to 7mm, for example, 5mm or 6mm, but is not limited thereto. By adopting the reinforcing steel bar within the range, the requirements on the building strength and space can be ensured.

It should be noted that in the embodiments of the present disclosure, unless otherwise explicitly specified or limited, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

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 present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. The utility model provides a exempt from to tear open die block superimposed sheet which characterized in that includes:

the bottom plate is a flat plate with a preset thickness;

the reinforcing mesh is arranged on the bottom plate; and

2. The disassembly-free bottom die laminated plate as claimed in claim 1, wherein the web ribs of the bent portions are curved or zigzag.

3. The disassembly-free bottom die laminated plate as claimed in claim 1, wherein the web of the bent portion is parallel to a horizontal plane.

4. The disassembly-free bottom die laminated slab of claim 1, wherein the web of the bent portion is located below the lower-chord steel bar.

5. The disassembly-free bottom die laminated slab as claimed in claim 4, wherein the mesh reinforcement is located above the lower-chord reinforcement.

6. The disassembly-free bottom die laminated plate as claimed in claim 1, wherein at least some of the web ribs of the bent portions are embedded in the bottom plate.

7. The disassembly-free bottom die laminated plate as claimed in claim 1, wherein the bottom plate is a composite material bottom plate.

8. The disassembly-free bottom die laminated plate as claimed in claim 1, wherein the bottom plate has a thickness of 4mm to 30mm, a width of 600mm to 4000mm, and a length of 1000mm to 18000mm.

9. The disassembly-free bottom die laminated slab as claimed in claim 1, wherein the height of the steel bar truss is 70-270mm, and the width of the steel bar truss is 60-100mm.

10. The disassembly-free bottom die laminated slab as claimed in claim 1, wherein the diameter of the upper chord steel bar and the lower chord steel bar is 6-20mm, and the diameter of the web rib is 4-7mm.