WO2020232858A1

WO2020232858A1 - Prefabricated steel structure building and construction process therefor

Info

Publication number: WO2020232858A1
Application number: PCT/CN2019/102100
Authority: WO
Inventors: 汪金祥; 欧阳超; 张耀林; 姜官森; 刘曙; 周瑜; 朱德桥; 胡旭利; 刘勋
Original assignee: 中建钢构有限公司
Priority date: 2019-05-20
Filing date: 2019-08-23
Publication date: 2020-11-26
Also published as: CN110106981A; CN110106981B; DE212019000503U1

Abstract

Provided are a prefabricated steel structure building and a construction process therefor, belonging to the field of building construction. The prefabricated steel structure building comprises a steel frame support structure, a steel-bars truss deck, a wall body and an outer envelop enclosure, wherein the steel frame support structure on any one layer comprises a plurality of columns arranged at intervals, a plurality of beams and a plurality of inclined struts. One end of each of the plurality of columns is fixed, the beams are mounted between the other ends of the plurality of columns, and the inclined struts are mounted between the columns and the beams. The steel-bars truss deck comprises a sheet body and a bottom shuttering, with the sheet body and the bottom shuttering being detachably connected, and the plurality of beams being connected to the sheet body. The wall body comprises an ALC panel, and the ALC panel encloses the columns. The outer envelop enclosure comprises a keel and a heat preservation and decoration integrated panel, with the heat preservation and decoration integrated panel being connected to the keel, and the keel being connected to the steel frame support structure or being connected to the ALC panel. The construction process comprises: the construction of the steel frame support structure on the first layer, the construction of the steel frame support structure on the remaining layers, wall body construction, and outer envelop enclosure construction. The present invention alleviates the problem of the prior art not being conducive to popularization.

Description

Fabricated steel structure building and its construction technology To

Technical field

The invention relates to the technical field of building construction, in particular to a fabricated steel structure building and its construction technology.

Background technique

At present, the country is vigorously promoting prefabricated steel structure buildings. The residential sector has a large demand and a wide market range. It belongs to the field of focus and research and development of prefabricated steel structure buildings. In the residential field, the current research and development direction is still based on structural systems. On the basis of ensuring structural safety, it is as easy as possible to make the interior beautiful and convenient to construct. There is little systematic research and research on prefabricated steel structure residential buildings.

For prefabricated steel structure residential buildings, the safety of the structural system can be guaranteed. However, the selection of various structures used to assemble residential buildings, such as supporting structures, walls, steel truss floor decks, etc., is the current difficulty in construction. The selection of various structures in prefabricated steel structure residential buildings directly affects the construction Quality. Since there is no systematic research and development of prefabricated steel structure residential buildings, the existing prefabricated steel structure buildings are not conducive to promotion.

Summary of the invention

The purpose of the present invention is to provide a prefabricated steel structure building and its construction technology, so as to solve the technical problem of lack of guidance in the selection of various structures of prefabricated residential buildings in the prior art, which is not conducive to popularization.

The invention provides a prefabricated steel structure building, which includes a steel frame support structure, a reinforced truss floor deck, a wall and an external protection;

The steel frame support structure is divided into multiple layers, and any layer of the steel frame support structure includes multiple spaced columns, multiple beams and multiple diagonal braces;

One end of the multiple columns is fixed, the other end of any one column is higher than one end of the column, a beam is installed between the other ends of the multiple columns, and the diagonal brace is installed between the column and the beam;

The steel-reinforced truss floor deck includes a slab body and a bottom formwork. The slab body and the bottom formwork are detachably connected, and multiple beams in the steel frame support structure of any layer are connected to the slab body;

The wall includes ALC board, which is enclosed on the column;

The external protection includes a keel and a thermal insulation and decoration integrated board, which is connected with the keel; the keel is connected with the steel frame support structure, or connected with the ALC board.

Further, the column is a box-shaped steel column, and the box-shaped steel column is filled with concrete.

Further, the beam is an I-beam.

Further, the diagonal brace is a box-shaped steel diagonal brace.

Furthermore, the wall also includes aerated blocks and autoclaved lime-sand bricks;

The aerated block is enclosed at the position corresponding to the diagonal brace on the steel frame supporting structure;

The autoclaved lime-sand bricks are enclosed in the area corresponding to the bathroom in the building on the steel frame supporting structure.

Further, a polyethylene rod and sealant are filled between two adjacent thermal insulation and decoration integrated boards.

Further, the height of the steel frame support structure is less than 100 meters.

The present invention provides a construction process for constructing a prefabricated steel structure building as described above, including:

Construction of the first-story steel frame support structure: install the columns in the first-story steel frame support structure on the ground, install beams on the columns, and install diagonal braces between the columns and the beams;

Construction of the steel frame support structure of the remaining layers: connect the columns of the two adjacent steel frame support structures, install beams on the columns of the steel frame support structure of each layer, and install diagonal braces between the columns and the beams;

Reinforced truss floor deck construction: when the steel frame support structure is constructed to the preset floor, install the reinforced truss floor deck on the beams of each floor of the steel frame support structure from bottom to top;

Wall construction: After the steel truss floor deck is installed, install the ALC board on the column;

Outer protection construction: connect the keel with the steel frame support structure, or connect with the ALC board, and then connect the thermal insulation and decoration integrated board with the keel.

Further, in the construction of the steel frame support structure of the first storey and the construction of the steel frame support structure of the other layers, the outer side of the beam located at the side of the steel frame support structure is convex relative to the wall outside there, so as to reduce the occupation of the building by the beam. interior space.

Furthermore, in the construction of the wall, a flexible connection is adopted between the column and the side of the ALC board;

The beams and the reinforced truss floor deck on the ALC slab are connected with the ALC slab in a flexible connection mode.

The fabricated steel structure building and its construction process provided by the present invention can produce the following beneficial effects:

The fabricated steel structure building provided by the present invention includes a steel frame support structure, a reinforced truss floor deck, a wall and an outer protection. The steel frame support structure is divided into multiple layers, and the steel frame support structure of any layer includes multiple columns and multiple Beams and multiple diagonal braces. A plurality of columns are arranged at intervals, one end of the column is fixed, the other end of the column is higher than one end of the column, the beam is installed on the other end of the plurality of columns, and the diagonal bracing is installed between the column and the beam. Multiple beams in the steel frame support structure of any one floor are connected with the steel truss floor deck. The wall includes ALC board, which is enclosed by the steel frame support structure. The external protection includes a keel and an integrated heat preservation and decoration board, which is connected with the steel frame support structure, or connected with the ALC board; and the heat preservation and decoration integrated board is connected with the keel.

Compared with the prior art, the present invention combines steel frame support structure, reinforced truss floor deck, ALC board, keel and thermal insulation decoration integrated board to assemble into a steel structure building. The selection of item structure is clearly guided. It can be seen that the present invention solves the technical problem of lack of guidance in the selection of various structures in prefabricated steel structure buildings in the prior art, which is not conducive to popularization.

The construction technology for constructing the above-mentioned fabricated steel structure building provided by the present invention includes the construction of the steel frame support structure of the first floor, the construction of the steel frame support structure of the remaining floors, the construction of the steel truss floor deck, the wall construction, and the outer protection construction.

The construction process of the present invention for constructing the above-mentioned fabricated steel structure building clearly selects each structure in the fabricated steel structure building. Therefore, the construction process of the present invention for constructing the above-mentioned fabricated steel structure building is also improved In the prior art, the selection of various structures in fabricated steel structure buildings lacks guidance and is not conducive to popularization.

Description of the drawings

In order to explain the specific embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the specific embodiments or the description of the prior art. Obviously, the appendix in the following description The drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of a fabricated steel structure building provided by Embodiment 1 of the present invention;

2 is a schematic diagram of the connection node between the beam and the reinforced truss floor deck provided by Embodiment 1 of the present invention;

3 is a schematic diagram of the connection nodes between two adjacent steel truss floor decks according to Embodiment 1 of the present invention;

4 is a schematic diagram of the connection node between the ALC plate and the beam provided by the first embodiment of the present invention;

FIG. 5 is a schematic diagram of the connection node between the ALC plate and the reinforced truss floor deck provided by the first embodiment of the present invention;

6 is a schematic diagram of the connection node between the ALC board and the column provided by the first embodiment of the present invention;

Fig. 7 is a schematic diagram of another connection node between the ALC plate and the beam according to the first embodiment of the present invention;

FIG. 8 is a schematic diagram of connection nodes between two adjacent ALC boards according to Embodiment 1 of the present invention;

9 is a schematic diagram of another connection node between the ALC plate and the steel truss floor deck provided by the first embodiment of the present invention;

FIG. 10 is a schematic diagram of the structure between the thermal insulation and decoration integrated board and the ALC board provided in the first embodiment of the present invention.

In the figure:

1- Steel frame support structure; 10- Column; 11- Beam; 12- Diagonal brace; 2- Reinforced truss floor deck; 20- End vertical reinforcement; 21- Truss reinforcement; 22- Plastic fastener; 23- Bottom formwork ; 24-iron sheet; 3-ALC board; 30-alkali-resistant glass fiber mesh cloth; 31-pipe clamp; 4-keel; 5- thermal insulation and decoration integrated board; 6-angle steel; 7-sliding board; 8-steel anchor; 9-U card.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of the embodiments of the present invention, not all the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the pointed device or element must have a specific orientation or a specific orientation. The structure and operation cannot therefore be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

In addition, in the description of the present invention, it should be noted that the terms "installed", "connected", and "connected" should be understood in a broad sense, unless otherwise clearly defined and limited. For example, they may be fixed connections or Removable connection or integral connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present invention can be understood in specific situations.

The present invention provides a fabricated steel structure building and its construction process. The fabricated steel structure building and its construction process provided by the present invention will be described in detail below with reference to the accompanying drawings:

Example one:

As shown in Fig. 1, the fabricated steel structure building provided by this embodiment includes a steel frame support structure 1, a steel truss floor deck 2, a wall and a periphery. The steel frame support structure 1 is divided into multiple layers, and any one layer of the steel frame support structure 1 includes a plurality of columns 10 arranged at intervals, a plurality of beams 11 and a plurality of diagonal braces 12. One end of the plurality of columns 10 is fixed, the other end of any one of the columns 10 is higher than one end of the column 10, a beam 11 is installed between the other ends of the plurality of columns 10, and the diagonal brace 12 is installed between the column 10 and the beam 11.

The reinforced truss floor deck 2 includes a plate body and a bottom form, and the plate body and the bottom form are detachably connected. Wherein, the multiple beams 11 in the steel frame support structure 1 of any one layer are all connected with the plate body. The wall includes an ALC board 3, and the ALC board 3 is enclosed on the column 10. The external protection includes a keel 4 and a thermal insulation and decoration integrated board 5, and the thermal insulation and decoration integrated board 5 is connected with the keel 4; the keel 4 is connected with the steel frame support structure 1 or connected with the ALC board 3.

Compared with the prior art, this embodiment combines the steel frame support structure 1, the reinforced truss floor deck 2, the ALC board 3, the keel 4 and the thermal insulation and decoration integrated board 5 to assemble into a steel structure building. The selection of various structures in the steel structure residential building was guided. Therefore, this embodiment solves the technical problem of lack of guidance in the selection of various structures in prefabricated steel structure buildings in the prior art, which is not conducive to popularization.

Among them, the steel frame support structure 1 is the main structure of the fabricated steel structure building, the beam 11, the column 10 and the diagonal support in the steel frame support structure 1 have clear force transmission, and the construction technology of the steel frame support structure 1 is relatively mature, and The rigidity of the main structure of the prefabricated steel structure building can be made higher while ensuring less steel consumption. In practical applications, the design and construction of the steel frame support structure 1 can refer to construction specifications such as "Steel Structure Engineering Construction Specifications".

Among them, the reinforced truss floor deck 2 can realize the construction of the floor without supporting form. At the same time, the bottom mold in the reinforced truss floor deck 2 can be removed and can be recycled, and the bottom of the reinforced truss floor deck 2 is formed after the bottom film is removed The surface is better, and there is no need for later top decoration such as suspended ceiling to prevent loss of the indoor height of the fabricated steel structure building.

It can be seen that the reinforced truss floor deck 2 can not only improve the construction quality, but also increase the indoor height of the fabricated steel structure building and increase the indoor space.

Among them, the design and construction of the reinforced truss floor deck 2 can refer to construction specifications such as the "reinforced truss floor deck" and "combined floor design and construction code".

As shown in FIG. 2, the reinforced truss floor deck 2 includes end vertical bars 20, truss bars 21 and a bottom form 23. The bottom form 23 and the truss reinforcement 21 are detachably connected together by plastic fasteners 22. Among them, the plastic fastener 22 is a fastener commonly used in construction.

As shown in FIG. 2, the reinforced truss floor deck 2 and the beam 11 in the steel frame support structure 1 can be connected by welding between the end vertical ribs 20 and the beam 11.

As shown in FIG. 2, when the gap between the bottom form 23 and the steel beam 11 is greater than 1 mm, in order to prevent slurry leakage during construction, the gap between the bottom form 23 and the beam 11 needs to be sealed with iron sheets 24.

As shown in Figure 3, when two adjacent reinforced truss floor decks 2 are connected together, if the gap between the bottom formwork 23 in the adjacent two reinforced truss floor decks 2 is greater than 1 mm, the same is to prevent In the case of slurry leakage during construction, the gap between the bottom formwork 23 and the bottom formwork 23 also needs to be sealed with iron sheets 24.

Furthermore, as shown in FIG. 3, the plastic fasteners 22 in the reinforced truss floor deck 2 may be connected between the bottom formwork 23 and the truss steel bars 21 by metal self-tapping screws.

Further, the wall includes ALC board 3. Among them, ALC is autoclaved lightweight concrete (Autoclaved Lightweight Concrete, abbreviated as ALC), ALC board 3 is a finished large-scale board, which meets the current country's industrialized interior requirements.

Among them, the design and construction of ALC board 3 can refer to the construction drawings collections such as "Autoclaved Aerated Concrete Block and Plate Structure" and "Autoclaved Aerated Concrete Slab".

In actual construction, when the outer base wall of the fabricated steel structure building is made of ALC board 3, the ALC board 3 is a rigid material, and the fabricated steel structure building uses a lot of steel materials than ALC board 3. The rigidity is low and the flexibility is high. Therefore, the connection between the ALC plate 3 and the steel frame support structure 1 of the fabricated steel structure building should be connected by a steel pipe anchor 8. As shown in Figure 4, the steel pipe anchor 8 can ensure the connection strength At the same time, coordinated deformation can be generated between the wall and the steel frame support structure 1 to prevent the fabricated steel structure building from being damaged due to rigid extrusion.

Further, the ALC board 3 located at the periphery of the fabricated steel structure building, that is, the connection between the ALC board 3 located at the outer wall and the beam 11 in the steel frame support structure 1 may be connected together by a steel pipe anchor 8. Specifically, as shown in Fig. 4, the beam 11 can be welded with an angle steel 6. The angle steel 6 and the ALC plate 3 are connected together by a sliding plate 7, an anchor bolt and a steel pipe anchor 8. The ALC plate 3 and the ALC plate 3 located on the outer wall The gap between the beams 11 can be filled with foaming agent, polyethylene rod and sealant.

The connection between the ALC plate 3 and the reinforced truss floor deck 2 located on the periphery of the fabricated steel structure building, that is, the connection between the ALC plate 3 at the outer wall and the reinforced truss floor deck 2 can be similar to that located on the outer wall The connection between the beam 11 at the position and the ALC board 3. Specifically, as shown in Figure 5, the angle steel 6 can be fixed on the reinforced truss floor deck 2, and then the angle steel 6 and the ALC plate 3 are connected together through the sliding plate 7, the anchor bolt and the steel pipe anchor 8 to connect the steel truss The gap between the floor deck 2 and the ALC board 3 is filled with cement mortar and sealant.

As shown in Figure 6, a gap of 10 to 20 mm can be reserved between the column 10 of the steel frame support structure 1 and the ALC plate 3, and then the gap is filled with caulking agent, foaming agent and polyethylene rod, caulking Agents, foaming agents and polyethylene rods can connect the column 10 and the ALC board 3 together. Among them, caulking agent, foaming agent and polyethylene rod are all commonly used construction materials in construction.

The ALC board 3 located inside the prefabricated steel structure building, that is, the connection between the ALC board 3 at the inner wall and the beam 11 in the steel frame support structure 1 is shown in Figure 7. The beam 11 is welded with a U-shaped card 9. The U-shaped card 9 is attached to the top of the ALC board 3, and a flexible material is filled between the U-shaped card 9 and the top of the ALC board 3.

As shown in Figure 8, the connection between two adjacent ALC boards 3 can be connected by caulking agent and polyethylene rods, and the joints on the sides of the two adjacent ALC boards 3 can also be laminated with alkali resistance Glass fiber mesh cloth 30.

The ALC board 3 located inside the prefabricated steel structure building, that is, the connection between the ALC board 3 at the inner wall and the steel truss floor deck 2 is shown in Figure 9, and the bottom end of the ALC board 3 at the inner wall The pipe clamp 31 is fixedly connected, and the pipe clamp 31 at the bottom end of the ALC plate 3 is fixed on the steel truss floor deck 2 through anchor bolts.

When the height of the ALC board 3 is greater than 24 meters, in order to enable the prefabricated steel structure building to achieve coordinated deformation while meeting the strength requirements, the connection mode of the ALC board 3 can be individually designed according to the construction drawings.

When the fabricated steel structure building is subjected to lateral force, the lateral displacement of the steel frame support structure 1 and the lateral displacement of the steel truss floor deck 2 are both relatively large. And because the steel frame support structure 1 is connected to the wall, the steel truss floor deck 2 is also connected to the wall, and the ALC plate 3 in the wall has a greater rigidity, so to prevent the wall from being damaged when subjected to lateral force , It is necessary to coordinate the deformation between the wall and the steel frame support structure 1, as well as the wall and the reinforced truss floor deck 2, so that the steel frame support structure 1 and the reinforced truss floor deck 2 can be displaced laterally During the process, the wall will not be crushed or destroyed.

Further, in order to coordinate the deformation between the wall and the steel frame support structure 1, as well as between the wall and the steel truss floor deck 2, the ALC board 3 in the wall can be made to be with the rest of the wall except the bottom. The connection mode between the steel frame support structure 1 is flexible connection, and the connection mode between the ALC plate 3 in the wall and the reinforced truss floor deck 2 located on the steel frame support structure 1 is also flexible connection. The flexible connection is, for example, a steel pipe anchor 8 connection.

Among them, the column 10 in the steel frame support structure 1 is a box-shaped steel column 10, and the box-shaped steel column 10 is filled with concrete.

Furthermore, the beam 11 in the steel frame support structure 1 is an I-beam 11.

Among them, when constructing the beam 11 in the steel frame support structure 1, for the edge beams located on the periphery of the fabricated steel structure building, the edge beams can be externally installed, that is, the edge beams located on the periphery of the fabricated steel structure building can be The outer side is convex relative to the wall at this place to prevent the beam from being exposed in the fabricated steel structure building.

In this embodiment, the diagonal brace 12 in the steel frame support structure 1 is a box-shaped steel diagonal brace 12.

In the actual construction process, the box-shaped steel diagonal brace 12 should be coordinated with the fabricated steel structure building to prevent the box-shaped steel diagonal brace 12 from being placed at the door and window openings.

Wherein, the wall also includes aerated blocks and autoclaved lime-sand bricks, and the aerated blocks are enclosed on the steel frame supporting structure 1 at a position corresponding to the diagonal brace 12. The autoclaved lime-sand bricks are enclosed on the steel frame support structure 1 at the area corresponding to the toilet in the building.

The design and construction of aerated blocks and autoclaved lime-sand bricks can also refer to the construction drawings of "Autoclaved Aerated Concrete Blocks and Plate Structures" and "Autoclaved Aerated Concrete Slabs".

Further, a polyethylene rod and sealant are filled between two adjacent thermal insulation and decoration integrated boards 5.

Among them, the thermal insulation and decoration integrated board 5 belongs to a new type of material integrating thermal insulation and decoration, and the keel 4 is a building material used to support the shape and fix the structure.

As shown in Figure 10, when the thermal insulation and decoration integrated board 5 is constructed on the construction site, the keel 4 and the steel frame support structure 1 can be connected together. According to the actual situation, the keel 4 and the steel frame support structure can be partially connected to the fabricated steel structure building. The ALC boards 3 are connected together, and after the keel 4 is installed, the thermal insulation and decoration integrated board 5 and the keel 4 are connected together.

In order to further achieve the thermal insulation effect and make the overall building system more beautiful, polyethylene rods and sealant can be filled between two adjacent thermal insulation and decorative integrated boards 5.

Among them, the design and construction between the keel 4 and the thermal insulation and decoration integrated board 5 can refer to the collection of construction drawings such as "Architectural Structure of External Wall Decoration and Thermal Insulation Integrated System".

In practical applications, the height of the steel frame support structure 1 provided in this embodiment is less than 100 meters. That is, the fabricated steel structure building provided in this embodiment is suitable for high-rise buildings less than 100 meters.

In summary, the prefabricated steel structure residential building provided by this embodiment can meet the strength requirements while ensuring high construction quality, and due to the selection of various structures in the prefabricated steel structure building and the inter-structure All connections have clear requirements, so this embodiment has carried out an overall review of the fabricated steel structure building, and the fabricated steel structure building provided by this embodiment has good generalizability.

After on-site construction verification, the fabricated steel structure provided in this embodiment meets the relevant requirements of the prefabricated building evaluation standards, and can greatly reduce on-site wet operations. At the same time, it can well protect the surrounding environment of the project, which is in line with the current state’s requirements for the construction environment Related requirements.

The various structures and most of the fabricated steel structure buildings provided in this embodiment can be manufactured in a factory and then installed at the construction site. Therefore, the construction progress is faster and the demand for construction personnel is small, which can save construction costs. At the same time speed up the construction progress.

Embodiment two:

This embodiment provides a construction process for constructing the fabricated steel structure building as in the first embodiment, including:

Among them, in the construction of the steel frame support structure of the first floor and the construction of the steel frame support structure of the remaining floors, the outer side of the beam located at the side of the steel frame support structure is convex relative to the wall outside there to reduce the beam occupying the building's interior space.

Furthermore, in the construction of the wall, a flexible connection is adopted between the column and the side of the ALC slab; the beam and the reinforced truss floor deck located on the ALC slab are respectively connected with the ALC slab in a flexible connection.

The flexible connection mode can make the wall and the steel frame supporting structure, as well as the wall and the steel truss floor deck, can be coordinated and deformed, and prevent the wall from being crushed when the prefabricated steel structure is stressed.

The construction process of the prefabricated steel structure building provided in this embodiment clearly selects each structure in the prefabricated steel structure building. Therefore, the construction process of the prefabricated steel structure building provided by the present invention is also improved. In the prior art, the technical problem of the lack of guidance for the selection of various structures in the fabricated steel structure building is not conducive to promotion.

Finally, it should be noted that the above-mentioned embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, but not to limit it. The protection scope of the present invention is not limited thereto, although referring to the foregoing The embodiments describe the present invention in detail. Those skilled in the art should understand that any person skilled in the art can still modify the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention. Or it can be easily conceived of changes, or equivalent replacements of some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be covered by the present invention Within the scope of protection. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

A prefabricated steel structure building, which is characterized in that it comprises a steel frame support structure, a steel truss floor deck, a wall and an outer protection;

The steel frame support structure is divided into multiple layers, and the steel frame support structure of any layer includes a plurality of columns, a plurality of beams, and a plurality of diagonal braces arranged at intervals;

One end of the plurality of columns is fixed, the other end of any one of the columns is higher than one end of the column, the beam is installed between the other ends of the plurality of columns, and the diagonal brace is installed at Between the column and the beam;

The reinforced truss floor deck includes a plate body and a bottom mold, the plate body is detachably connected to the bottom mold, and a plurality of the beams in the steel frame support structure of any layer are connected to the plate body ；

The wall body includes an ALC board, and the ALC board surrounds the column;

The outer protection includes a keel and a thermal insulation and decoration integrated board, the thermal insulation and decoration integrated board is connected with the keel; the keel is connected with the steel frame support structure, or is connected with the ALC board. To
The fabricated steel structure building according to claim 1, wherein the column is a box-shaped steel column, and the box-shaped steel column is filled with concrete.
The fabricated steel structure building of claim 2, wherein the beam is an I-beam.
The fabricated steel structure building of claim 3, wherein the diagonal brace is a box-shaped steel diagonal brace.
The fabricated steel structure building according to claim 1, wherein the wall further comprises aerated blocks and autoclaved lime-sand bricks;

The air filling block is enclosed at a position corresponding to the diagonal brace on the steel frame supporting structure;

The autoclaved lime-sand brick is enclosed at the area corresponding to the toilet in the building on the steel frame supporting structure.
The fabricated steel structure building according to claim 1, wherein a polyethylene rod and sealant are filled between two adjacent thermal insulation and decoration integrated boards.
The fabricated steel structure building according to any one of claims 1-6, wherein the height of the steel frame support structure is less than 100 meters.
A construction process for constructing the fabricated steel structure building according to claim 1, characterized in that it comprises:

Construction of the first-story steel frame support structure: install the column in the first-story steel frame support structure on the ground, install the beam on the column, and install the diagonal between the column and the beam. support;

Construction of the steel frame support structure of the remaining layers: connect the columns in the two adjacent layers of the steel frame support structure, and install the beams on the columns in the steel frame support structure of each layer, Installing the diagonal brace between the column and the beam;

Reinforced truss floor deck construction: when the steel frame support structure is constructed to a preset floor, install the reinforced truss floor deck on the beams in the steel frame support structure of each floor in turn from bottom to top;

Wall construction: after the steel truss floor deck is installed, install the ALC board on the column;

Outer protection construction: connect the keel with the steel frame support structure, or connect with the ALC board, and then connect the thermal insulation and decoration integrated board with the keel.
The construction process of the fabricated steel structure building according to claim 8, wherein in the construction of the steel frame support structure on the first floor and the construction of the steel frame support structure on the remaining floors, the steel frame support structure The outer side of the beam at the side protrudes relative to the outer wall of the wall, so as to reduce the indoor space occupied by the beam.
The construction process of a prefabricated steel structure building according to claim 8, characterized in that, in the construction of the wall, a flexible connection is adopted between the column and the side surface of the ALC board;

The beam and the reinforced truss floor deck located on the ALC slab are connected in a flexible connection manner with the ALC slab respectively.