CN110593473B

CN110593473B - Adopt steel construction building floor structure of light floor

Info

Publication number: CN110593473B
Application number: CN201910970037.XA
Authority: CN
Inventors: 刘小荣; 杨涛; 王东方; 刘明辉; 刘冶
Original assignee: Tibet Taoyang New Building Materials Technology Co ltd
Current assignee: Tibet Taoyang New Building Materials Technology Co ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2021-02-26
Anticipated expiration: 2039-10-12
Also published as: CN110593473A

Abstract

The invention discloses a steel structure building floor structure adopting a light floor, which comprises a steel structure main body and N floor structures arranged in the steel structure main body, the floor slab structure comprises an X layer of light floor slabs arranged in a steel structure main body and a layer of horizontal force transmission reinforced layers arranged in the steel structure main body and above the light floor slabs, the height of the X layer of light floor slabs is generally more than or equal to 25 meters and less than or equal to 40 meters, the floor design scheme of X layers of light floors and 1 layer of horizontal force transmission reinforced layers is adopted, the limitation of the light floors when the building height exceeds 50 meters can be effectively solved through the superposition of a plurality of floor structures, the structure dead weight of the building is greatly reduced by adopting the structure, and the seismic force is reduced, the earthquake-resistant performance of the building structure is improved to a certain extent, the application range of the light floor slab is expanded, and the building integrally meets the earthquake-resistant requirement of the building.

Description

Adopt steel construction building floor structure of light floor

Technical Field

The invention relates to the field of building structures, in particular to a steel structure building floor structure adopting a light floor.

Background

Along with the development of cities and the increase of urban population, buildings develop towards a higher trend, and along with frequent natural disasters, the requirements on earthquake resistance of the buildings are higher and higher. When the seismic intensity is more than or equal to 8 degrees or the building height exceeds 50 meters, the structure of a profiled steel plate reinforced concrete composite floor, a steel bar truss floor bearing plate or a cast-in-place reinforced concrete floor and the like is required to be adopted, but the structure has a great self weight by adopting the structure, and the adverse effect is brought to the seismic performance of the steel structure. Due to the requirement of the floor for transmitting horizontal force, the existing light floor is only allowed to be suitable for buildings with the fortification intensity of less than or equal to 7 degrees and less than 50 meters, and the application of the light floor is limited when the seismic intensity is greater than or equal to 8 degrees or the building height exceeds 50 meters. Therefore, it is worth studying how to reduce the dead weight of the building when the seismic intensity is greater than or equal to 8 degrees or the height of the building exceeds 50 meters.

Disclosure of Invention

The invention provides a steel structure building floor structure adopting a light floor to solve the technical problems.

The invention is realized by the following technical scheme:

the utility model provides an adopt steel construction building floor structure of light floor, includes steel construction main part and N place the floor structure in the steel construction main part in, the floor structure includes that X layer arranges the light floor in the steel construction main part and one deck steel construction main part in and arranges the horizontal biography enhancement layer of light floor top in, the height more than or equal to 25 meters and less than or equal to 40 meters of X layer light floor, N is the natural number. The steel construction building floor structure of this scheme is mainly based on main structure plane in rigidity comparatively even, and it is lower to the horizontal biography power requirement of floor at tens meters within ranges, consequently can set up a horizontal biography power enhancement layer along high every 25 to 40 meters scopes and can satisfy the horizontal biography power requirement, for the floor structure of this scheme adopts the floor design scheme of X layer light floor +1 layer horizontal biography power enhancement layer, can effectively solve the restriction of light floor when building height surpasss 50 meters through the stack of a plurality of floor structures. By adopting the structure of the X layers of light floor slabs and 1 layer of horizontal force transmission reinforced layers, the self weight of the structure of the building is greatly reduced, so that the earthquake force is reduced, the earthquake-resistant performance of the building structure is improved to a certain extent, the application range of the light floor slabs is expanded, and the whole building meets the earthquake-resistant requirement of the building.

Preferably, the distance between two adjacent horizontal force transfer reinforced layers is greater than or equal to 28 meters and less than or equal to 34 meters.

Preferably, the distance between two adjacent horizontal force transfer reinforced layers is equal to 30 meters in order to improve the horizontal force transfer capacity on the basis of reducing the self weight of the building.

Preferably, when the building has higher requirements on the horizontal force transmission of the floor slab, the distance between two adjacent horizontal force transmission reinforced layers can be less than 25 meters.

Preferably, the light floor slab is a fiber reinforced faced wood-based floor slab or a floor slab with similar performance, and the fiber reinforced faced wood-based floor slab comprises two overlaid structural plates, a grid arranged between the two overlaid structural plates and a sealing rib plate connected to the end parts of the two overlaid structural plates.

Preferably, the edge sealing rib plate is arranged on the beam, and the light floor slab concrete pouring device further comprises a connecting structure for connecting the light floor slab and the beam, wherein the connecting structure comprises a connecting piece fixed on the beam, a bolt penetrating through the edge sealing rib plate and with one end clamped on the connecting plate, and a cast-in-place concrete layer, and the concrete layer is arranged in a gap between the edge sealing rib plate and the closer grid, a gap between the light floor slab and the beam, and a gap between two adjacent light floor slabs.

The horizontal force transmission reinforced layer can adopt a profiled steel plate reinforced concrete composite floor, a steel bar truss floor bearing plate, a cast-in-place reinforced concrete floor or a reinforced concrete laminated slab. In a building with a refuge layer, the horizontal force transmission reinforced layer can improve the horizontal force transmission capability in a cantilever truss and floor slab mode.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. the floor slab structure adopts a floor slab design scheme of X layers of light floor slabs and 1 layer of horizontal force transmission reinforced layers, the limitation of the light floor slabs when the building height exceeds 50 meters can be effectively solved through the superposition of a plurality of floor slab structures, the structure dead weight of the building is greatly reduced by adopting the structure, the earthquake force is reduced, the earthquake resistance of the building structure is improved to a certain extent, the application range of the light floor slabs is expanded, and the integral building meets the earthquake resistance requirement of the building.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention.

Fig. 1 is a schematic diagram of the structure of the present solution.

Fig. 2 is a structural schematic diagram of the light floor slab of the invention.

Fig. 3 is a schematic view of connection of a light floor slab with a middle beam and a secondary beam when a sawtooth vertical plate is adopted.

Fig. 4 is a schematic view of the connection between the light floor and the edge beam when the sawtooth vertical plate is adopted.

FIG. 5 is a cross-sectional view A1-A1 of FIG. 3.

FIG. 6 is a cross-sectional view A2-A2 of FIG. 3.

Fig. 7 is a schematic view of the connection of the light floor slab with the middle beam and the secondary beam when the Z-shaped steel is adopted.

Fig. 8 is a schematic view of the connection of the light floor with the center sill and the sub-sill when the flower basket connector is adopted.

FIG. 9 is a cross-sectional view B1-B1 of FIG. 8.

FIG. 10 is a cross-sectional view B2-B2 of FIG. 8.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

Example 1

The reasonable application of the light floor slab can improve the earthquake resistance of the building, and the invention provides a new solution for the requirement of the floor slab on transferring horizontal force aiming at the use scene that the rigidity in the plane of the main structure is more uniform and the requirement on the horizontal force transfer of the floor slab is lower within the range of dozens of meters: the steel structure building floor structure adopting the light floor as shown in fig. 1 comprises a steel structure main body and N floor structures arranged in the steel structure main body, wherein N is a natural number and can be 1, 2, 3, 4 and the like, and the construction of a high-rise building with the height of more than 50 meters can be realized by stacking a plurality of floor structures. Specifically, in order to solve the problem of horizontal force transmission of the floor slab, the floor slab structure comprises a plurality of layers of light floor slabs 1 arranged in a steel structure main body and a layer of horizontal force transmission reinforced layers 2 arranged in the steel structure main body and above the light floor slabs, wherein the number of layers of the light floor slabs of a single floor slab structure is generally between 8 and 15, and the distance between every two adjacent horizontal force transmission reinforced layers is larger than or equal to 25 meters and smaller than or equal to 40 meters. The number of layers of the light floor slab and the distance between two adjacent horizontal force transmission reinforced layers are set according to the requirement of the structure on the floor slab to transmit horizontal force, and the higher the requirement is, the fewer the number of layers of the light floor slab is; the lower the requirement, the more layers of light floor slabs, and preferably, the distance between two adjacent horizontal force transmission reinforced layers is greater than or equal to 28 meters and less than or equal to 34 meters. The light floor slab is light in weight, only 1/4 of the concrete floor slab is perfectly combined with a steel structure, the earthquake force of the building can be greatly reduced, and the higher the building is, the greater the benefit is. By adopting the floor design scheme of X layers of light floors and 1 layer of horizontal force transmission reinforced layers, the limitation of the light floors when the building height exceeds 50 meters can be effectively solved through the superposition of a plurality of floor structures, the structural dead weight of the building is greatly reduced, the seismic force is reduced, the seismic performance of the building structure is improved, the application range of the light floors is expanded, and the building integrally meets the seismic requirement of the building.

The horizontal force transmission reinforced layer can adopt a profiled steel plate reinforced concrete composite floor, a steel bar truss floor bearing plate, a cast-in-place reinforced concrete floor or a reinforced concrete laminated slab. In the building with the refuge layer, the horizontal force transmission reinforced layer can improve the horizontal force transmission capability in a cantilever truss and floor slab mode.

Example 2

Based on the above embodiments, the present embodiment discloses a specific implementation manner.

The steel structure main body can be steel frame, steel frame support, steel pipe bundle shear wall, steel sheet shear wall isotructure, requires that the main structure vertical member plane arranges evenly, reduces the requirement to floor transmission horizontal force. The distance between two adjacent horizontal force transmission reinforced layers is set to be 30 meters, the light floor slab adopts the existing fiber reinforced clad wood-based floor slab or the floor slab with similar performance, can be completely processed and finished in a factory, only simple operations such as connection, concrete crack pouring and the like are carried out during field construction, and the light floor slab is an excellent assembly type structural member. As shown in fig. 2, the fiber reinforced faced wood-based floor slab includes two overlaid structural panels 11, a grid 12 disposed between the two overlaid structural panels 11, and edge-sealed ribs 13 connected to ends of the two overlaid structural panels. The fiber reinforced faced wood-based floor slab internal cavity can be used for arranging electromechanical pipelines to realize pipeline separation, which adapts to the development trend of the fabricated building and provides a brand new solution for the fabricated building. The size of the light floor is generally less than or equal to 4 m by 4 m, and secondary beams are added beyond the range. The light floor slabs on the same layer can be connected by bolts and adhesives. The secondary beam is rigidly connected with the frame beam in the lateral direction and transmits horizontal force together with the light floor slab. The light floor slab is firmly connected with the frame beams, the secondary beams or the vertical members on the four sides. The frame beam comprises an edge beam and a middle beam. The fiber reinforced faced wood-based floor slab has the advantages of good integrity, light weight, higher strength and strong continuous collapse resistance, and is favorable for meeting the performance target of building shattering. The tensile limit strain of the fiber reinforced clad wood substrate can reach 0.01, and compared with concrete, the fiber reinforced clad wood substrate has enough adaptive deformability and excellent anti-seismic performance. The fiber reinforced cladding wood-based floor slab has light weight and small size of corresponding components of the vertical member, can save the steel consumption by 30 percent, can reduce the foundation load, and has great advantage on the cost of the whole structure.

Example 3

Based on the structure of embodiment 2, this embodiment discloses a concrete connection structure of light floor and roof beam. The fiber reinforced faced wood-based floor slab has smooth surface, has good bonding performance with concrete or mortar, can be used as a base layer of a building veneer and the like, and is favorable for realizing building and decoration integrated design and construction.

As shown in fig. 3, 4, 5 and 6, the lightweight floor slab can be connected with the boundary beam, the secondary beam and the middle beam by adopting cast-in-place concrete and reserving bolts. As shown in fig. 3, when connecting the center sill and the secondary sill, the edge banding rib plate 13 of the two light floors is placed on the sill, and the connecting structure includes a connecting member 31, a bolt 32 passing through the edge banding rib plate 13 and having one end connected to the connecting member 31, and a cast-in-place concrete layer 33. The connecting plate 31 is a sawtooth vertical plate, the beam is an I-shaped steel beam, one end of the sawtooth vertical plate is welded on a flange plate of the I-shaped steel beam, and the bolt 32 is clamped in teeth of the sawtooth vertical plate to realize connection. When the connecting structure is connected with the middle beam and the secondary beam, two light floor slabs are built on the beams, and bolts on two sides of the sawtooth vertical plates are clamped in the teeth of the sawtooth vertical plates in a staggered mode. The concrete layer is arranged in a gap between the edge sealing rib plate and the nearer grid, a gap between the light floor slabs and the beam and a gap between two adjacent light floor slabs and is firmly connected through cast-in-place concrete.

Example 4

Based on the structure of embodiment 2, this embodiment discloses a concrete connection structure of light floor and roof beam.

The structure of the present embodiment is substantially the same as that of embodiment 3, and as shown in fig. 7, the difference is that in the present embodiment, the connecting member 31 is made of Z-shaped steel, the beam is generally made of an i-beam 4, one end of a flange plate of the Z-shaped steel is fixed on a flange plate of the i-beam and is provided with a groove for fastening a bolt to achieve connection. When the Z-shaped steel is connected with the middle beam and the secondary beam, two light floor slabs are erected on the beams, and bolts on two sides of the Z-shaped steel are clamped in the grooves of the Z-shaped steel in a staggered mode.

Example 5

Based on the structure of embodiment 2, this embodiment discloses a specific connection structure of light floor and well roof beam, secondary beam.

As shown in fig. 8, 9 and 10, the lightweight floor slab can be connected with the secondary beam and the middle beam by adopting cast-in-place concrete and reserving bolts. As shown in fig. 8, when connecting the center sill and the secondary sill, the edge banding rib plate 13 of the two light floors is placed on the sill, and the connecting structure includes a connecting member 31, a bolt 32 passing through the edge banding rib plate 13 and having one end connected to the connecting member, and a cast-in-place concrete layer 33. The connecting piece 31 adopts a basket steel bar connector, bolts are reserved on the light floor slabs on two sides, and the bolts are connected with the basket steel bar connector; the beam is an I-shaped steel beam, and the concrete is connected in an enhanced manner through the studs welded on the flange plates of the I-shaped steel beam. The concrete layer is arranged in a gap between the edge sealing rib plate and the nearer grid, a gap between the light floor slabs and the beam and a gap between two adjacent light floor slabs and is firmly connected through cast-in-place concrete.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A steel structure building floor structure adopting a light floor is characterized by comprising a steel structure main body and N floor structures arranged in the steel structure main body, wherein each floor structure comprises a plurality of layers of light floors and a horizontal force transmission reinforced layer arranged above the light floors, the distance between every two adjacent horizontal force transmission reinforced layers is more than or equal to 25 meters and less than or equal to 40 meters, and N is a natural number;

the light floor slab is a fiber reinforced faced wood-based floor slab, and the fiber reinforced faced wood-based floor slab comprises two overlaid structural plates, a grid and edge-sealed rib plates, wherein the two overlaid structural plates are arranged in an overlapped mode, the grid is arranged between the two overlaid structural plates, and the edge-sealed rib plates are connected to the end portions of the two overlaid structural plates;

the edge sealing rib plate is arranged on the beam, and the edge sealing rib plate further comprises a connecting structure for connecting the light floor plates and the beam, wherein the connecting structure comprises a connecting piece fixed on the beam, a bolt penetrating through the edge sealing rib plate and having one end connected with the connecting piece, and a cast-in-place concrete layer, and the concrete layer is arranged in a gap between the edge sealing rib plate and the nearer grid, a gap between the light floor plates and the beam, and a gap between two adjacent light floor plates; the bolt connects the edge banding rib plate with the concrete layers on the two sides.

2. The steel structure building floor structure using light weight floor slab as claimed in claim 1, wherein the distance between two adjacent horizontal force transfer reinforced layers is greater than or equal to 28 m and less than or equal to 34 m.

3. The steel structure building floor structure using light weight floor slab as claimed in claim 1, wherein the distance between two adjacent horizontal force transfer reinforced layers is equal to 30 m.

4. The steel structure building floor structure using light weight floor slab of claim 1, wherein the connecting member is a serrated riser, the beam is an i-beam, the serrated riser is welded to a flange plate of the i-beam, and the bolt is engaged in a tooth of the serrated riser.

5. The steel structure building floor structure using light weight floor slab of claim 1, wherein the connecting member is Z-section steel, the beam is an i-beam steel, a flange plate of the Z-section steel is fixed on a flange plate of the i-beam steel and is provided with a groove for fastening a bolt.

6. The structural building floor slab structure using lightweight floor slab as claimed in claim 4 or 5, wherein the beam is a middle beam or a sub beam, and the bolts at both sides of the connecting member are arranged alternately.

7. The structural building floor slab structure using lightweight floor slab of claim 1, wherein the connecting member is a steel basket connector, the beam is an i-beam, and when the steel basket connector is used, the concrete is connected to the flange plate of the i-beam by means of a stud.

8. The steel structure building floor structure using light weight floor slab as claimed in claim 1, wherein the horizontal force transmission reinforced layer can be a profiled steel plate reinforced concrete composite floor, a steel bar truss floor slab, a cast-in-place reinforced concrete floor or a reinforced concrete composite slab.