阅读说明：本技术 一种钢砼组合楼盖体系 (Steel concrete composite floor system ) 是由 许晓梁 张文斌 洪文明 于 2021-07-13 设计创作，主要内容包括：本发明涉及一种钢砼组合楼盖体系,楼盖体系包括钢板、钢板支托、抗剪件、钢梁和混凝土,所述的混凝土置于钢板上,钢板通过钢板支托和钢梁连接,混凝土通过抗剪件与钢梁连接。与现有技术相比,本发明混凝土与钢梁顶平,或根据建筑局部降板需要混凝土降低到钢梁高度范围任何高度,降低了组合楼盖的整体高度,增加了建筑净高,特别对于高层建筑,随着层数的增加,减小的整体高度累积也越多。此外对于采用钢与混凝土组合梁设计的结构,在连续梁段和悬挑梁段等部位,钢梁的受压区在钢梁的中下部区域,采用混凝土布置在钢梁中下部受压区高度内,能更好的发挥这些部位组合梁的组合受力效果。(The invention relates to a steel concrete composite floor system, which comprises a steel plate, a steel plate support, a shearing resistant piece, a steel beam and concrete, wherein the concrete is arranged on the steel plate, the steel plate is connected with the steel beam through the steel plate support, and the concrete is connected with the steel beam through the shearing resistant piece. Compared with the prior art, the concrete and the steel beam are flattened, or the concrete is reduced to any height within the height range of the steel beam according to the requirement of local plate lowering of the building, so that the overall height of the composite floor system is reduced, the net height of the building is increased, and particularly for high-rise buildings, the accumulation of the reduced overall height is increased along with the increase of the number of layers. In addition, for the structure designed by the steel and concrete combined beam, the compression area of the steel beam is in the middle-lower area of the steel beam at the parts such as the continuous beam section and the cantilever beam section, and the concrete is arranged in the height of the compression area of the middle-lower part of the steel beam, so that the combined stress effect of the combined beams at the parts can be better exerted.)

1. A steel-concrete composite floor system is characterized by comprising a steel plate (3), a steel plate support (2), a shearing resistant piece (5), a steel beam (1) and concrete (4), wherein the concrete (4) is arranged on the steel plate (3), the steel plate (3) is connected with the steel beam (1) through the steel plate support (2), and the concrete (4) is connected with the steel beam (1) through the shearing resistant piece (5).

2. The steel-concrete composite floor system according to claim 1, wherein the steel plate (3) is connected with the steel plate bracket (2), and the steel plate bracket (2) is connected with the steel beam (1).

3. The steel-concrete composite floor system according to claim 1, wherein said steel plate (3) comprises a general steel plate, a closed-type profiled steel plate, an open-type profiled steel plate, a steel plate with a steel-bar truss.

4. The steel-concrete composite floor system according to claim 1, wherein the top of the concrete (4) is flush with the top of the steel beam (1).

5. The steel-concrete composite floor system according to claim 1, wherein the top of the concrete (4) is located within the height range of the steel beam (1).

6. The steel-concrete composite floor system according to claim 1, wherein the concrete (4) is provided with reinforcing steel bars (9).

7. The steel-concrete composite floor system according to claim 1, wherein the steel plate bracket (2) comprises angle steel, channel steel, box steel and steel plates;

the section shape of the steel beam (1) comprises an I shape and a box shape.

8. A reinforced concrete composite floor system according to claim 1, wherein said shear blocks (5) are provided on the steel beams (1) and/or the steel plate supports (2) in contact with the concrete (4).

9. The steel-concrete composite floor system according to any one of claims 1 to 8, wherein a waterproof layer (7) is arranged in the building surface layer (8) on the steel beam (1) and the concrete (4).

10. A reinforced concrete composite floor system according to claim 9, wherein said waterproof layer (7) covers the contact surface (6) of the steel beam (1) and the concrete (4).

Technical Field

The invention relates to the technical field of building structure engineering, in particular to a steel concrete composite floor system.

Background

The floor system is a general term for components composed of floor slabs, secondary beams, main beams and the like used for bearing various floor functions between floors of a house. The steel concrete composite floor slab is a composite floor slab formed by pouring concrete on a profiled steel sheet, and can be divided into a composite slab and a non-composite slab according to whether the profiled steel sheet works together with the concrete or not. The composite slab is a cast-in-place concrete floor (roof) slab which is used as a tension steel bar at the bottom of the slab besides a permanent template for pouring concrete. The non-composite plate is a profiled steel plate which is only used as a permanent template of a concrete floor slab, and does not consider a cast-in-place concrete floor (roof) plate participating in structural stress.

The profiled steel plates and the concrete of the traditional composite floor are generally arranged on the tops of the steel beams, and the national standard also has a corresponding method, but the height of the floor is increased by adding the height of the profiled steel plate concrete composite floor on the tops of the steel beams besides the height of the steel beams, so that the net height of the building is influenced to a certain extent. In addition, for the structure designed by adopting the steel and concrete composite beam, the calculation method according to the national standard is to fully utilize the stress of the concrete part above the steel beam top and the tension of the lower steel beam part so as to fully utilize the stress characteristics of the two materials of the concrete with good stress and the steel with good tension to form a composite beam stress system. However, at the continuous beam support section, the cantilever beam section and other parts of the whole building structure, the compression area of the steel beam is in the middle lower part area of the steel beam, and if the traditional combined beam is adopted according to the national standard, the stress characteristics of concrete and the steel beam cannot be fully exerted, and the waste of materials is formed.

Disclosure of Invention

The invention aims to provide a steel concrete composite floor system which can reduce the influence on the net height of a building and fully exert the stress characteristics of concrete and steel beams.

The purpose of the invention can be realized by the following technical scheme: a steel-concrete composite floor system comprises a steel plate, a steel plate support, a shearing-resistant member, a steel beam and concrete, wherein the concrete is arranged on the steel plate, the steel plate is connected with the steel beam through the steel plate support, and the concrete is connected with the steel beam through the shearing-resistant member.

Preferably, the steel plate is connected with the steel plate bracket, and the steel plate bracket is connected with the steel beam.

Preferably, the steel plate includes a general steel plate, a closed-type profiled steel plate, an open-type profiled steel plate, and a steel plate with a rib truss. The steel plate, the steel plate bracket and the steel beam are generally connected by welding, and any other convenient connection form can be adopted.

Preferably, the concrete top is flush with the top of the steel beam.

Preferably, the concrete top is located within the height range of the steel beam.

The concrete roof is generally flush with the steel beam and can be lowered to any height within the height range of the steel beam depending on the building layout and the computational construction requirements. The design can effectively reduce the height of the combined floor system, increase the net height of the building, and correspondingly reduce the overall height of the building, and particularly for high-rise buildings, the reduced overall height is accumulated more along with the increase of the number of floors.

In the continuous beam support section, the cantilever beam section and other parts of the integral building structure, the compression area of the steel beam is in the middle lower part area of the steel beam, if the traditional combined beam is adopted according to the national standard, the stress characteristics of concrete and the steel beam cannot be fully exerted, and the waste of materials is formed. The sections of the concrete at the positions reduced to the height of the compression area of the steel beam form the combined beam, so that the stress characteristics of two materials, namely the concrete and the steel, can be fully exerted, the combined beam at the positions can more efficiently exert the stress performance, and the overall construction cost is saved.

Preferably, the concrete is internally provided with steel bars. The concrete can be provided with reinforcing steel bars according to calculation and construction requirements.

Preferably, the steel plate bracket comprises angle steel, channel steel, box steel and steel plates, and can also comprise any available form.

The section shapes of the steel beams comprise I-shaped and box-shaped, and can also comprise any available section forms.

The steel plate bracket and the steel beam are generally connected by welding, and any other convenient connection form can be adopted.

In the invention, because of the protection of concrete, paint and fireproof coating are not needed to be brushed on the contact surface of the steel beam and the concrete.

Preferably, the shear block is provided on a steel beam and/or a steel plate rest which is in contact with the concrete.

Preferably, waterproof layers are arranged in the building surface layers on the steel beams and the concrete. A waterproof layer can be arranged in the building surface layer on the steel beam and the concrete as required, so that the condition that the concrete and the reinforcing steel bars in the concrete are corroded alternately due to wetting of the surface of the concrete by water and the service life of the steel-concrete composite floor system is influenced is prevented.

Further preferably, the waterproof layer covers the contact surface of the steel beam and the concrete.

A construction method of the steel concrete composite floor system comprises the following steps:

s1: constructing a steel beam, and connecting the steel plate support to the steel beam;

s2: connecting the steel plate with the steel beam through the steel plate support;

s3: and pouring concrete on the steel plate, and arranging the shear resistant pieces.

Preferably, the construction method comprises the following steps:

s1: firstly, constructing main steel structures such as steel beams and the like, and connecting steel plate supports on the steel beams;

s2: connecting the steel plate with the steel beam through the steel plate support;

s3: pouring concrete on the steel plate, wherein in order to enable the concrete to be better connected with the steel beam and the steel plate to form a composite floor stress system, a shear resistant part is usually required to be arranged, and reinforcement structures such as reinforcing steel bars and the like are arranged in the concrete according to the stress and the structural requirements;

s4: and finally, arranging a waterproof layer on the poured concrete in combination with the building surface layer, wherein the waterproof layer needs to cover the contact surface of the steel beam and the concrete.

In step S1, the steel plate brackets may be connected to the steel beams by welding, or may be connected in other effective ways; in step S2, the connection may be maintained by welding or other effective connection means.

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

1. according to the invention, through the matching arrangement of the steel plate supports and the shearing resistant pieces, the floor system can flexibly adjust the relative height of the concrete and the steel beam according to the building requirements, the influence on the net height of the building is reduced, the stress characteristics of the concrete and the steel beam are fully exerted, and the stability and the bearing capacity of the structure are ensured;

2. according to the invention, the concrete top and the steel beam are leveled, or the height of the concrete is reduced to any height within the height range of the steel beam according to the local plate lowering requirement of the building, so that the height of the composite floor system is reduced, the net height of the building is increased, the overall height of the building can be correspondingly reduced, and particularly for high-rise buildings, the reduced overall height is accumulated more along with the increase of the number of layers;

3. according to the calculation requirements of the composite beams at different parts of the building structure, for example, for the parts such as a continuous beam support section, a cantilever beam section and the like in the whole building structure, the concrete is reduced to any height of a steel beam compression area, and the stress characteristics of two materials, namely the concrete compression material and the steel tension material, can be fully exerted, so that the composite beams at the sections can more efficiently exert the stress performance, and the whole construction cost of the structure is saved;

4. the concrete is directly connected with the steel beam within the height range of the steel beam, and the contact surface saves the methods of painting and fireproof coating, thereby saving part of the construction cost of the structure;

5. the steel plate can be used as a template during concrete pouring during concrete construction, so that the process of formwork support is omitted, and the construction time is saved.

Drawings

FIG. 1 is a schematic elevation structure view of a reinforced concrete composite floor system according to the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic view of the elevation structure of the concrete of the present invention after the elevation thereof is lowered;

in the figure: 1-steel beam, 2-steel plate support, 3-steel plate, 4-concrete, 5-shearing resistant piece, 6-contact surface, 7-waterproof layer, 8-building surface layer and 9-reinforcing steel bar.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments. The following examples are carried out on the premise of the technical scheme of the invention, and detailed embodiments and specific operation processes are given, but the scope of the invention is not limited to the following examples.

Example 1

A steel concrete composite floor system is shown in figures 1-2 and comprises: the steel plate 3, the steel plate support 2, the shearing resistant part 5, the steel beam 1 and the concrete 4, the concrete 4 is arranged on the steel plate 3, the steel plate 3 is connected with the steel beam 1 through the steel plate support 2, the concrete 4 is connected with the steel beam 1 through the shearing resistant part 5, and the concrete 4 is leveled with the steel beam 1. The steel plate bracket 2 is connected with the steel beam 1, and the steel plate bracket 2 can be in any steel member form such as angle steel, channel steel, box steel, steel plate and the like so that the steel plate 3 is connected with the steel beam 1. The steel plate bracket 2 and the steel beam 1 can be connected by welding or any other convenient connection form. The steel plate 3 is connected with the steel beam 1 through a steel plate bracket 2, and the steel plate 3 can be in various forms such as a common steel plate, a closed profiled steel plate, an open profiled steel plate, a steel plate with a steel bar truss and the like. The steel plate 3 bottom die and the concrete 4 can generate good adhesive force better by adopting the open and closed profiled steel plates and the steel bar truss steel plates. The steel plate 3, the steel plate bracket 2 and the steel beam 1 can be connected by welding or in any other convenient connection mode.

The concrete 4 is arranged on the steel plate 3, the part of the concrete 4, which is contacted with the steel plate support 2 and the steel beam 1, can be provided with the shear resistant piece 5, and the shear resistant piece 5 can be arranged according to the construction or calculation requirements, so that the concrete 4 and the steel beam 1 are better bonded or form a combined beam to bear force. The shear resistant members 5 of the present embodiment are studs, and any other form of shear resistant member that facilitates the effective bonding of the concrete 4 and the steel beam 1 may be used. The concrete 4 can be provided with reinforced structures such as reinforcing steel bars 9 according to calculation and construction requirements, and the steel beam 1 can be in any section form such as an I-shaped section form and a box-shaped section form. The contact surface 6 of the steel beam 1 and the concrete 4 can avoid the requirements of constructional protective measures such as paint brushing and the like due to the protection of the concrete 4, and can correspondingly save part of the manufacturing cost. The upper part of the concrete 4 is combined with a building surface layer 8, a waterproof layer 7 can be arranged, and the waterproof layer 7 needs to cover the contact surface 6 of the steel beam 1 and the concrete 4. The steel plate 3 can be used as a template in concrete pouring, so that a formwork supporting process and a formwork supporting process in concrete pouring are omitted, and the construction time is saved.

Example 2

For a structure designed by adopting a steel and concrete combined beam, a calculation method according to national standards is to fully utilize the stress of the concrete part above the top of the steel beam and the tension of the lower steel beam part so as to fully utilize the stress characteristics of two materials, namely the good stress of the concrete and the good tension of the steel material, thereby forming a combined beam stress system. However, for the continuous beam support section, the cantilever beam section and other parts in the whole building structure, the concrete is reduced to any height of the steel beam compression area, as shown in fig. 3, the combined stress effect of the concrete compression and the steel tension of the combined beam can be better exerted, the stress characteristics of respective materials are fully exerted, and the whole construction cost of the structure is saved. Meanwhile, due to the requirement of building clearance, upturning beams are required to be arranged in some areas, and a composite floor form shown in figure 3 can also be adopted.

In this embodiment, girder steel 1 adopts the I-shaped cross section form, and girder steel 1 right side concrete 4 highly connects in girder steel 1 web middle part region, and what 1 right side steel sheet bracket 2 of girder steel adopted here is the angle steel, and the angle steel welds with I-shaped girder steel 1 web, and any steel member cross section forms such as channel-section steel, box steel, steel sheet can also be adopted to this place angle steel. The steel plate 3 is a closed profiled steel plate, the rib direction of the closed profiled steel plate is parallel to the length direction of the steel beam 1, and the rib direction can also be vertical to the length direction of the steel beam 3. Here, the closed-end profiled steel sheet may be replaced by various types such as a normal steel sheet, an open-end profiled steel sheet, and a steel sheet with a rib truss. The closed profiled steel sheet is welded with the angle steel and the I-shaped steel beam 1, and any other form convenient for connection can be adopted. In order to increase the adhesion between the concrete 4 and the steel beam 1, a shear member 5 is disposed between the concrete 3 and the steel beam 1. The stud on the right side of the steel beam 1 is welded with a web plate of the steel beam 1, welded with an upper flange of the steel beam 1 and welded with angle steel through a profiled steel sheet.

The left concrete 4 of the steel beam 1 is at the height of the lower flange of the steel beam 1, the left steel plate 3 also adopts a closed profiled steel plate as well as the right steel plate, and can also be replaced by various forms such as a common steel plate, an open profiled steel plate, a steel plate with a steel bar truss and the like according to actual needs. Here the plate rib is perpendicular with girder steel 1 length direction, also can be parallel with girder steel 1 length direction as required with the plate rib. The lower flange of the steel beam 1 is directly welded with the closed profiled steel sheet without arranging the steel sheet support 2, and the closed profiled steel sheet and the I-shaped steel beam 1 can also adopt any other form convenient for connection. The left side stud of the steel beam 1 is welded with the web plate of the steel beam 1, the upper flange of the steel beam 1 and the penetrating profiled sheet is welded with the lower flange of the steel beam 1 respectively.

The shear blocks 5 shown in figure 3 are studs and any other form of shear block which facilitates enhanced bonding of the concrete 4 to the steel beam 1 may be used. The concrete 4 can be provided with reinforced structures such as reinforcing steel bars 9 according to calculation and construction requirements, and the steel beam 1 can be in any section form such as an I-shaped section form and a box-shaped section form. The contact surface 6 of the steel beam 1 and the concrete 4 can avoid the requirements of constructional protective measures such as paint brushing, fireproof coating and the like due to the protection of the concrete 4, and can correspondingly save part of the manufacturing cost. The upper part of the concrete 4 is combined with a building surface layer 8, a waterproof layer 7 can be arranged, and the waterproof layer 7 needs to cover the contact surface 6 of the steel beam 1 and the concrete 4. The steel plate 3 can be used as a template in concrete pouring, so that a formwork supporting process and a formwork supporting process in concrete pouring are omitted, and the construction time is saved.

Fig. 3 shows only one combination of concrete height reduction to any height in the range of the web height of the steel beam 1, and the concrete height reduction to any height in the range of the web height of the steel beam 1 can form various combinations of different heights, which is not listed here.

The steel concrete composite floor system of the invention has the following advantages:

through the cooperation setting of steel sheet support 2 and shear 5 for the superstructure system can be according to the building needs nimble adjustment concrete 4 and girder steel 1 relative height, reduces the influence to the clear height of building, and the atress characteristic of full play concrete 4 and girder steel 1 guarantees the stability and the bearing capacity of structure simultaneously. Through setting up concrete 4 and 1 tops of girder steel flat, or fall the board needs according to the building and also can arrange any height in 1 high limits of girder steel, reduced the height of girder steel concrete combination superstructure, increased the clear height of building, reduced the whole height of building. Especially for high-rise buildings, the more the reduced overall height accumulates as the number of floors increases. In addition, for the structure designed by the steel and concrete combined beam, at the parts such as the continuous beam section and the cantilever beam section, the compression area of the steel beam is in the middle-lower area of the steel beam, and the concrete 4 is arranged in the height of the compression area of the middle-lower part of the steel beam 1, so that the combined stress effect of the combined beams at the parts can be better exerted. Concrete 4 is directly connected with girder steel 1 within the range of girder steel 1 height, and this contact surface has saved the way of mopping and fire prevention coating, has saved some structure cost. When the concrete 4 is constructed, the steel plate 3 can be used as a template when the concrete 4 is poured, so that the process of formwork supporting is omitted, and the construction time is saved.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.