CN114351927A

CN114351927A - Section steel concrete floor system and construction method thereof

Info

Publication number: CN114351927A
Application number: CN202111637618.5A
Authority: CN
Inventors: 傅礼铭; 傅纤鹤
Original assignee: Hubei Synthetic Space Technology Co ltd
Current assignee: Hubei Synthetic Space Technology Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-04-15
Anticipated expiration: 2041-12-29
Also published as: CN114351927B

Abstract

The invention discloses a section steel concrete multi-ribbed cavity floor and a construction method thereof, and relates to the technical field of assembled cavity floors.A section steel concrete multi-ribbed cavity floor comprises a panel layer, at least two cavity members and a multi-ribbed beam, wherein the cavity members are connected through the multi-ribbed beam, and the panel layer is covered on the cavity members and integrated with the cavity members and the multi-ribbed beam; the ribbed beam is provided with a concrete matrix, a profile steel base plate and a stress bar; the stress rib is arranged on the profile steel substrate; the cavity component is symmetrically provided with at least two supporting positions; the supporting position is connected with the section steel base plate, the section steel concrete multi-ribbed cavity floor system can save construction time, avoid templates, reduce the number of supporting rods for supporting the templates, save construction period and effectively reduce cost.

Description

Section steel concrete floor system and construction method thereof

Technical Field

The invention relates to the technical field of assembled cavity floor slabs, in particular to a section steel concrete floor and a construction method thereof.

Background

At present, in the construction of an assembly type building, the construction related to the assembly type cavity floor slab usually adopts a partially prefabricated and partially cast-in-place mode. Namely, an integral floor slab is formed by firstly adopting a prefabricated cavity to pave and then pouring a concrete beam in place. On one hand, the construction method needs to support a large number of supports and templates at the bottom to support the weight of the cavity templates and the cavities, especially the weight of the cast-in-place beam; under current construction technology, need a large amount of support frames densely covered to place in order to guarantee the safe and reliable who supports, the space environment that leads to the construction place is very big limited, and in the construction period, site tool material can't be put and mixed and disorderly unordered, influences the construction progress, persists the potential safety hazard.

On the other hand, during cast-in-place concrete construction, operators step on the concrete and are stressed unevenly, so that the concrete sinks to generate a large amount of deformation of the plate bottom, and at this time, the support structure needs to be adjusted or the local structural strength needs to be correspondingly enhanced.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a steel reinforced concrete floor and a construction method thereof.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:

a steel reinforced concrete floor comprises a panel layer, at least two cavity members and a multi-ribbed beam, wherein the cavity members are connected through the multi-ribbed beam, and the panel layer is covered on the cavity members and integrated with the cavity members and the multi-ribbed beam;

the ribbed beam is provided with a concrete matrix, a profile steel base plate and a stress bar; the stress rib is arranged on the profile steel substrate;

the cavity component is symmetrically provided with at least two supporting positions; the supporting position is connected with the profile steel substrate.

On the basis of the technical scheme, the section steel substrate is I-shaped steel, channel steel, H-shaped steel, inverted T-shaped steel or straight steel.

On the basis of the technical scheme, the stress rib is an opening stirrup.

On the basis of the technical scheme, the stress rib and the section steel substrate are welded or connected into a whole through bolts.

On the basis of the technical scheme, the supporting positions are connected with the multi-ribbed beams in a bolt connection mode, a hinge connection mode or a bolt connection mode.

On the basis of the technical scheme, the supporting positions are grooves, bulges or overhanging reinforcing steel bars.

On the basis of the technical scheme, the supporting position is provided with a protective layer, wherein the protective layer is made of iron sheet, steel plate, plastic soft glue or high-performance composite material.

On the basis of the technical scheme, the stress rib is embedded into the panel layer.

On the basis of the technical scheme, the end part of the steel base plate is a triangular splicing interface or a straight splicing interface.

On the basis of the technical scheme, the construction method of the steel reinforced concrete floor comprises the following steps:

the method comprises the following steps that firstly, the axes of a frame beam and a multi-ribbed beam are positioned, and a support rod is arranged at the intersection point of the multi-ribbed beam and the frame beam or below the intersection point between the multi-ribbed beams;

secondly, installing top plates corresponding to the cross points at the top ends of the support rods;

step three, respectively adjusting the extension height of the supporting rods to meet the design requirements;

step four, placing the section steel substrates of the multi-ribbed beams in batches, and sequentially connecting and fixing the section steel substrates into a grid shape;

hoisting the cavity member to complete the connection between the cavity member and the ribbed beam;

step six, binding frame beam gluten or/and bottom gluten;

step seven, installing a pipeline;

pouring and tamping concrete of the frame beam, the wall and the ribbed beam;

and step nine, maintaining and forming, and dismantling the supporting rod and the top plate.

Compared with the prior art, the invention has the advantages that:

(1) compared with the prior art, the steel reinforced concrete floor system has the advantages that the early strength of the ribbed beam before concrete is poured is increased due to the arrangement of the steel reinforced base plate, the construction without the template is completely realized, and the number of the supporting vertical rods is reduced. In addition, the section steel substrate material can directly participate in the stress action of the multi-ribbed beam, the reinforcing bars of the multi-ribbed beam are reduced, the construction period is saved, and the cost is effectively reduced. Saving a large amount of templates and reinforcing steel bars and effectively reducing the carbon emission.

(2) According to the steel reinforced concrete floor, the multi-ribbed beam steel substrate module which can be flexibly spliced and assembled is arranged, so that the shape and the size of the multi-ribbed beam can be freely adapted and adjusted, and the building construction can be quickly matched and finished according to a construction scheme.

(3) All parts of the steel reinforced concrete floor system can be orderly produced and processed in batches in a factory, so that the steel reinforced concrete floor system is greatly convenient to transport among fields, and has obvious construction economic benefits when being applied to hoisting and assembling of high-rise buildings.

(4) The steel reinforced concrete floor system disclosed by the invention is reasonable in layout and safe and reliable in structure, the number of traditional supports is greatly reduced, a large bottom space is reserved, the maintenance and the passing of constructors are facilitated, and the phenomena of more construction sites, impurities and disorder caused by the traditional support formwork are solved.

Drawings

FIG. 1 is a schematic structural view of a steel reinforced concrete floor according to an embodiment of the present invention;

FIG. 2 is a schematic view of an overall installation structure of a steel reinforced concrete floor according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a steel reinforced concrete floor having laminated layers according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a ribbed beam of a steel reinforced concrete floor according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a structural example of the welded connection between a reinforcing bar of a steel reinforced concrete floor and a steel base plate according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a cavity member of a steel reinforced concrete floor according to an embodiment of the present invention;

FIG. 7 is a front view of a cavity member of a steel reinforced concrete floor in an embodiment of the present invention;

FIG. 8 is a schematic view of a sectional steel substrate splicing combination structure of a sectional steel concrete floor system in the embodiment of the invention;

fig. 9 is a top view of a steel reinforced concrete floor in an embodiment of the present invention.

In the figure: 1-panel layer, 2-ribbed beam, 3-cavity member, 21-supporting position, 22-protective layer, 31-concrete matrix, 32-steel substrate and 33-stress bar.

Detailed Description

Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1, the structural schematic diagram of a steel reinforced concrete floor according to an embodiment of the present invention includes a steel reinforced concrete floor, which includes a panel layer 1, at least two cavity members 2 and multi-ribbed beams 3, the cavity members 2 are connected by the multi-ribbed beams 3, and the panel layer 1 is covered on the cavity members 2 and integrated with the cavity members 2 and the multi-ribbed beams 3.

Referring to fig. 2, in the embodiment of the present invention, a structural diagram of an overall installation structure of a steel reinforced concrete floor is shown,

referring to fig. 4, in the embodiment of the present invention, a structural schematic diagram of a multi-ribbed beam of a steel reinforced concrete floor is shown, where the multi-ribbed beam 3 is provided with a concrete matrix 31, a steel-section base plate 32, and a stress bar 33; the stress rib 33 is arranged on the section steel base plate 32;

referring to fig. 6 and 7, in the embodiment of the present invention, a structural schematic diagram of a cavity member of a steel reinforced concrete floor is shown, the cavity member 2 is symmetrically provided with at least two supporting positions 21; the supporting position 21 is connected with the steel section base plate 32.

The profile steel substrate 32 is i-steel, channel steel, T-steel or straight steel.

The stress rib 33 is an open stirrup. The stressed main reinforcement is only arranged at the upper part, the lower part is not arranged or is less arranged, and the stressed stirrup faces downwards.

The stress rib 33 and the section steel base plate 32 are welded or bolted into a whole.

The support positions 21 are connected with the multi-ribbed beams 3 in a welding, bolt connection, hinge connection or bolt connection mode.

The supporting position 21 is a groove, a bulge or an overhanging steel bar.

The supporting position 21 is provided with a protective layer 22, wherein the protective layer 22 is made of iron sheet, steel plate, plastic soft glue or high-performance composite material.

Referring to fig. 3, a structural schematic diagram of a steel reinforced concrete floor system with laminated layers according to an embodiment of the present invention is shown, and the stress bar 33 is embedded in the panel layer 1. According to whether the surface layer of the cavity component is exposed or not, the stress bar 33 of the steel reinforced concrete floor with the laminated layer is embedded into the panel layer 1, so that the panel layer 1 and the multi-ribbed beam 3 are combined into an integral reinforced concrete structure after concrete is poured and solidified.

Referring to fig. 8, a schematic diagram of a splicing combination structure of the section steel substrate 32 of the section steel concrete floor system according to the embodiment of the present invention is shown, the end of the section steel substrate 32 is a triangular splicing port or a straight splicing port, and can be spliced into a desired structural shape according to actual needs.

The construction method of the steel reinforced concrete floor comprises the following steps:

step one, positioning the axes of the frame beam and the multi-ribbed beam 3, and installing a support rod on the intersection point of the multi-ribbed beam 3 and the frame beam or below the intersection point between the multi-ribbed beams 3;

step four, placing the section steel substrates 32 of the multi-ribbed beams in batches, and sequentially connecting and fixing the section steel substrates into a grid shape;

hoisting the cavity member 2 to complete the connection of the cavity member 2 and the multi-ribbed beam 3;

step six, binding frame beam gluten or/and bottom gluten;

step seven, installing a pipeline;

step eight, pouring and tamping concrete of the frame beam, the wall and the ribbed beam 3;

In addition, the construction steps comprise the binding of floor slab gluten, the pouring and tamping of frame beams, walls, ribbed beams 3 and slab concrete. In particular, pins are provided on the top plate, and the support bars are located at each intersection or at one intersection or at two intersections. The pin is arranged only when the upper plate of the multi-ribbed beam 3 is a steel plate, and is not used generally.

Compared with the prior art, the steel reinforced concrete floor system has the advantages that the early strength of the ribbed beam 3 before concrete is poured is increased due to the arrangement of the steel reinforced concrete base plate, the construction without the formwork is completely realized, the supporting formwork erection is saved, and the number of the supporting upright posts is reduced. In addition, the section steel substrate material can directly participate in the stress action of the multi-ribbed beam 3, the reinforcing bars of the multi-ribbed beam 3 are reduced, the construction period is saved, and the cost is effectively reduced. Saving a large amount of templates and reinforcing steel bars and effectively reducing the carbon emission.

According to the steel reinforced concrete floor, the 3-section steel substrate module of the multi-ribbed beam can be flexibly spliced and assembled, the shape and the size of the multi-ribbed beam 3 can be freely adapted and adjusted, and the building construction can be quickly matched and finished according to a construction scheme. All parts of the steel reinforced concrete floor system can be orderly produced and processed in batches in a factory, so that the steel reinforced concrete floor system is greatly convenient to transport among fields, and has obvious construction economic benefits when being applied to hoisting and assembling of high-rise buildings.

The steel reinforced concrete floor system disclosed by the invention is reasonable in layout and safe and reliable in structure, the number of traditional supports is greatly reduced, a large bottom space is reserved, the maintenance and the passing of constructors are facilitated, and the phenomena of more construction sites, impurities and disorder caused by the traditional support formwork are solved.

The present invention is not limited to the above-described embodiments, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements are also considered to be within the scope of the present invention. Those not described in detail in this specification are within the skill of the art.

Claims

1. A profiled steel concrete dense rib cavity floor, characterized in that it comprises a panel layer (1), at least two cavity members (2) and a dense rib beam (3), among which the cavity members (2) are They are connected by the dense rib beam (3), the panel layer (1) is covered on the cavity member (2), and is connected with the cavity member (2) and the dense rib beam (3). ) into a whole;

The dense-ribbed beam (3) is provided with a concrete base (31), a profiled steel base plate (32) and a force-bearing rib (33); the force-bearing rib (33) is arranged on the profiled steel base plate (32);

The cavity member (2) is symmetrically provided with at least two support positions (21); the support positions (21) are connected with the profiled steel base plate (32).

2. a kind of profiled steel concrete rib cavity floor as claimed in claim 1 is characterized in that: described profiled steel base plate (32) is I-beam, channel steel, H-beam, inverted T-beam or straight-line steel .

3 . The profiled steel concrete rib cavity floor according to claim 1 , characterized in that: the stressed tendons ( 33 ) are open stirrups. 4 .

4. The profiled steel concrete rib cavity floor according to claim 1, characterized in that: the stress rib (33) and the profiled steel base plate (32) are welded or bolted as a whole.

5. A profiled steel concrete rib cavity floor according to claim 1, characterized in that: the support position (21) is connected with the rib beam (3), and the connection mode is welding, bolting, hinged or Pin connection.

6 . The profiled steel concrete rib cavity floor according to claim 1 , wherein the support position ( 21 ) is a groove, a protrusion or an overhanging steel bar. 7 .

7. A profiled steel concrete rib cavity floor according to any one of claims 1, 5 or 6, characterized in that: the support position (21) is provided with a protective layer (22), wherein the protection The layer (22) is iron sheet, steel plate, soft plastic glue or high performance composite material.

8 . The reinforced concrete rib cavity floor according to claim 1 , characterized in that: the stressed tendons ( 33 ) are embedded in the panel layer ( 1 ). 9 .

9 . The profiled steel concrete rib cavity floor according to any one of claims 1 , 2 or 4 , wherein the end of the profiled steel base plate ( 32 ) is a triangular joint or a one-word joint. 10 .

10. the construction method of a kind of profiled steel concrete rib cavity floor as claimed in claim 1, is characterized in that: comprises the following steps:

Step 1. Position the frame beam, the axis of the dense rib beam (3), and at the intersection of the dense rib beam (3) and the frame beam or at the intersection between the dense rib beams (3) Install the support rod below;

Step 2. Install the top plate corresponding to the intersection point on the top of each support rod;

Step 3. Adjust the extension height of the support rod respectively to meet the design requirements;

Step 4, placing the profiled steel substrates (32) of the dense rib beams (3) in batches, and sequentially connecting and fixing them into a grid;

Step 5, hoisting the cavity member (2) to complete the connection between the cavity member (2) and the dense rib beam (3);

Step 6. Binding frame beam gluten or/and bottom rib;

Step seven, install the pipeline;

Step 8, pouring and ramming the concrete of frame beams, walls, and described dense rib beams (3);

Step 9, curing and forming, removing the support rod and the top plate.