CN215670398U

CN215670398U - Full-prefabricated bidirectional floor without truss

Info

Publication number: CN215670398U
Application number: CN202120037632.0U
Authority: CN
Inventors: 肖正元
Original assignee: Sanneng Integrated Housing Co Ltd
Current assignee: Sanneng Integrated Housing Co Ltd
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2022-01-28
Anticipated expiration: 2031-01-07

Abstract

The utility model discloses a fully-prefabricated bidirectional floor slab without a truss. The fully-prefabricated bidirectional floor slab comprises a floor slab body, wherein the area of the floor slab body extends upwards to form an extension platform, and a superposed area is formed between the section of the extension platform and the end face of the floor slab body; the upper surface of the extension platform is provided with a first groove arranged transversely and a second groove arranged longitudinally; the bottom of floor body transversely is provided with first play muscle and the second play muscle of vertical setting. The bidirectional floor slab is not easy to crack, and the connection reliability of the prefabricated part and the cast-in-place part can be improved.

Description

Full-prefabricated bidirectional floor without truss

Technical Field

The utility model relates to a fully-prefabricated bidirectional floor slab without a truss, and belongs to the field of building industrialization.

Background

In the fabricated building, the prefabricated composite slab is usually more waste materials, the problems of pre-burying, floating and the like easily occur in the production process, the slab bottom is easy to crack in the transportation and hoisting process, and the site pre-burying and cast-in-place construction is complicated.

In addition, the prefabricated part and the cast-in-place part of the bidirectional floor slab are not firmly connected and do not have sound insulation and heat preservation effects.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a fully-prefabricated bidirectional floor slab without a truss, which is not easy to crack and can improve the connection reliability of a prefabricated part and a cast-in-place part.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a full-prefabricated bidirectional floor without a truss comprises a floor body and is structurally characterized in that a region of the floor body extends upwards to form an extension platform, and a superposed region is formed between the section of the extension platform and the end face of the floor body;

the upper surface of the extension platform is provided with a first groove arranged transversely and a second groove arranged longitudinally;

the bottom of floor body transversely is provided with first play muscle and the second play muscle of vertical setting.

From this, prefabricate the floor entirely, the recess of the vertical and horizontal setting of reserving on board upper portion is used for the on-the-spot surface course reinforcing bar of placing to saved the truss reinforcing bar, saved the reinforcing bar quantity greatly, the site operation technology also compares the superimposed sheet simplification, and is rapid, connects more firmly.

According to the embodiment of the utility model, the utility model can be further optimized, and the following is the technical scheme formed after optimization:

in one preferred embodiment, each of the first grooves and the second grooves is at least two, and the distance between two adjacent first grooves and/or the distance between two adjacent second grooves is at least 600 mm. Typically, there are two first grooves and two second grooves.

The first groove and/or the second groove are/is a through long groove. The through-length groove is more convenient to construct, the requirement that on-site part positions need to be provided with through-length surface layer reinforcing steel bars can be met, and the region with higher plate thickness and higher strength requirement in a public residential area can be met.

In one preferred embodiment, the width of the through-length groove is 15mm-30mm, and the depth of the first groove and the second groove is different, and the depth of the through-length groove is smaller than the height of the extension platform. More preferably, the depth of the through-length groove is 40mm to 50 mm.

In another preferred embodiment, the first and/or second grooves are non-through long grooves having a length 1/5-1/2 of a floor body slab span. The non-through-length grooves are used in common positions, are more advantageous for saving the consumption of on-site reinforcing steel bars and concrete, and are better for the integrity of the full precast floor slab. The length of the non-through groove is generally about 1/4 of the floor body slab span.

In one preferred embodiment, the non-full length groove has a width of 15mm to 30mm and a depth of 25mm to 35 mm.

In one preferred embodiment, the width of the overlapping section is 200mm to 300 mm. The width of the overlapping area refers to the distance between the end face of the boss and the end face of the corresponding side of the floor slab body.

In order to further improve the connection reliability of the overlapping area, the first groove, the second groove and the peripheral end faces of the floor slab body are rough faces, and the upper surface of the extension platform is a smooth face.

In order to conveniently place the surface course reinforcing bar, guarantee the overall structure intensity of floor simultaneously, the middle part of the relative floor body of extension platform upwards extends highly is 50mm at least.

Therefore, the floor slab is prefabricated completely, the upper part of the slab is provided with the through long groove for placing surface layer steel bars on site, the distance is properly increased to ensure the integrity of the slab, the type of the steel bars can also be properly increased for the surface layer steel bars placed on the construction site, if the surface layer steel bars placed on the construction site are changed into phi 8@ 14@600, the existing specification phi 8@150 is changed into phi 16@600, and the change principle is that the sum of the sectional areas of the steel bars on one side after being changed is larger than or equal to the sum of the sectional areas of the steel bars on the other side before being changed.

The full-prefabricated floor slab saves truss steel bars, greatly saves the using amount of the steel bars, and simplifies and accelerates the site construction process compared with a laminated slab.

Compared with the prior art, the utility model has the beneficial effects that:

1. the floor slab is completely prefabricated, truss reinforcing steel bars are omitted, complex pre-embedding of the laminated slab is simplified while cost is saved, and production efficiency is greatly improved.

2. The fully-prefabricated floor slab greatly reduces the concrete consumption of cast-in-place floor slabs, simultaneously reduces the construction complexity of the site, and greatly improves the integrity of the fully-prefabricated floor slab compared with a laminated slab.

Drawings

FIG. 1 is a top view of one embodiment of the present invention;

FIG. 2 is a rotated left side view of FIG. 1;

FIG. 3 is a top view of another embodiment of the present invention;

fig. 4 is a rotated left side view of fig. 3.

Detailed Description

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.

The utility model provides a do not establish full prefabricated two-way floor of truss, the floor adopts the production preparation of full prefabricated form, as shown in fig. 1 and 2, specifically speaking, the middle part region of floor body 1 upwards extends and forms extension platform 2, extends platform 2 and forms coincide district 11 all around, and pre-buried crisscross two-way reinforcing bar that has vertically and horizontally staggered in floor body 1's bottom. At least two criss-cross grooves are formed in the upper surface of the extension platform 2. The length direction of the first groove 21 transversely arranged is consistent with or parallel to the direction of the first rib 12 transversely arranged at the bottom of the floor slab body 1, and the length direction of the second groove 22 longitudinally arranged is consistent with or parallel to the direction of the second rib 13 longitudinally arranged at the bottom of the floor slab body 1.

As a structural style of chicken leg, first recess 21 and second recess 22 are logical long recess, and two-way logical long recess is reserved on the prefabricated plate upper strata of whole and is used for the job site to place the surface course reinforcing bar, in order to guarantee the wholeness of prefabricated floor slab of whole, and the interval between two adjacent logical long recesses that set up in the same direction is not less than 600mm, generally about 800mm, so the pre-buried surface course reinforcing bar in scene need increase the reinforcing bar size and satisfy the arrangement of reinforcement requirement.

The extension platform 2 is preferably a square platform, and the upper surface of the extension platform 2 is a smooth surface. The area of the floor slab body 1 extending inward about 250mm wide around the slab edge is the overlapping area 11, and the upper part of the overlapping area 11 is a rough surface. When the first groove 21 and the second groove 22 are normal grooves, the width thereof is about 20mm and the depth thereof is about 45 mm. The first groove 21 and the second groove 22 are rough surfaces.

The extension platform 2 extends upwardly relative to the floor slab body 1 by a height of at least 50 mm.

The upper surface of extension platform 2 is equipped with pre-buried nail 3 of hanging, generally sets up 4.

In order to further improve the connection strength, the peripheral end surfaces of the fully prefabricated bidirectional floor slab are provided with rough surfaces.

When the embodiment carries out deepening design to the floor, guarantee that every full precast floor weight all in the lifting weight scope of job site tower crane, confirm surface course recess interval and location according to concrete project, confirm simultaneously that the location of other built-in fittings is unified pre-buried in the mill. The floor node connection mode of this embodiment is similar with two-way superimposed sheet connected node, can carry out concrete placement after the on-the-spot ligature of surface course reinforcing bar.

As another structure form, as shown in fig. 3 and 4, the first groove 21 and the second groove 22 are both non-through long grooves, and the width of the groove is about 20mm and the depth thereof is about 30 mm. For such non-through-length grooves, the height of the extension platform 2 extending upwardly relative to the floor slab body 1 is at least 30 mm.

The anchoring length of the surface layer reinforcing steel bars is generally a quarter slab span, taking a floor slab with a span of 2000mm as an example, the anchoring length is 500, the width of the peripheral overlapped area 11 is 250mm, and the length of the non-through long groove is about 250 mm.

The above-described embodiments are set forth so that this disclosure will be thorough and complete, and will not be limited by any theory presented in the preceding claims, which may suggest themselves to those skilled in the art after reading this disclosure and all equivalents thereof that fall within the scope of the utility model as defined in the claims appended hereto.

Claims

1. A full-prefabricated bidirectional floor without a truss comprises a floor body (1) and is characterized in that the area of the floor body (1) extends upwards to form an extension platform (2), and a superposition area (11) is formed between the section of the extension platform (2) and the end face of the floor body (1);

a first groove (21) which is transversely arranged and a second groove (22) which is longitudinally arranged are formed in the upper surface of the extension platform (2);

the floor slab is characterized in that a first rib (12) and a second rib (13) which is longitudinally arranged are transversely arranged at the bottom of the floor slab body (1).

2. Fully prefabricated bidirectional floor without trusses according to claim 1, characterized in that said first grooves (21) and second grooves (22) are each provided in at least two, the spacing between two adjacent first grooves (21) and/or the spacing between two adjacent second grooves (22) being at least 600 mm.

3. Fully prefabricated bidirectional floor without trusses according to claim 1, characterized in that the first groove (21) and/or the second groove (22) is a through-long groove.

4. Fully prefabricated bidirectional floor without trusses according to claim 3, characterized in that the width of said through long groove is 15mm-30mm and the depth of the first (21) and second (22) grooves is different, the depth of said through long groove being smaller than the height of the extension platform (2).

5. The totally precast bidirectional floor slab without a truss as claimed in claim 4, wherein the depth of the through long groove is 40mm-50 mm.

6. Fully prefabricated bidirectional floor without trusses according to claim 1, characterized in that the first (21) and/or second (22) grooves are non-through long grooves having a length 1/5-1/2 of the slab span of the floor body (1).

7. The totally precast bidirectional floor slab without a truss as claimed in claim 6, wherein the non-through long groove has a width of 15mm to 30mm and a depth of 25mm to 35 mm.

8. Fully prefabricated bidirectional floor without trusses according to any of claims 1-7, characterized in that the width of the superimposed zones (11) is 200-300 mm.

9. The totally prefabricated bidirectional floor slab without trusses as claimed in any of claims 1 to 7, wherein the overlapping area (11), the first groove (21), the second groove (22) and the peripheral end surface of the floor slab body (1) are rough surfaces and the upper surface of the extension platform (2) is smooth surface.

10. Fully prefabricated bidirectional floor without trusses according to any of claims 1-7, characterized in that the height of the extension platform (2) extending upwards in relation to the middle of the floor body (1) is at least 50 mm.