CN211735762U - A structure of a concrete-filled steel tube prefabricated building - Google Patents

Abstract

The utility model discloses a structure of a CFST prefabricated building, which comprises a plurality of vertically and horizontally arranged CFST columns, connecting pieces, CFST beams, wall panels and floor slabs. Beneficial effects: the structure of the utility model is simple and easy to realize; the main load-bearing structure adopts a concrete-filled steel tube frame structure, which has large bearing capacity, light self-weight, and superior seismic performance; the structure is lighter, the stress state is good, and the usable area of the house is increased; The amount of steel and concrete; the construction period is short, the construction waste generated is less, and the dust and noise pollution during the construction process are reduced.

Description

A structure of a concrete-filled steel tube prefabricated building

Technical field:

The utility model patent belongs to the field of building construction, and particularly relates to a structure of a concrete-filled steel tube prefabricated building.

Background technique:

In the construction of multi-storey houses, the current method is mainly the traditional reinforced concrete frame construction method; the reinforced concrete frame construction method has the following problems: 1. Because the cross-sectional area of the concrete beam and column is too large, it will occupy the actual use space, Forming "fat beams and fat columns"; it will make the use space of the house irregular, which will bring inconvenience to the residents; 2. Because the solidification of concrete takes time, and it is not suitable for construction at low temperature, the construction time is long; 3. In traditional construction methods , A large number of on-site construction work will cause pollution such as dust and noise, waste resources and energy, easily lead to safety accidents, and difficult to control quality; 4. Traditional reinforced concrete houses are too heavy, and the seismic effect is not ideal.

Utility model content:

The purpose of the utility model is to provide a structure of a concrete-filled steel tube prefabricated building with large bearing capacity, light self-weight and superior seismic performance.

On the one hand, the technical solution of the utility model discloses a structure of a concrete-filled steel tube prefabricated building, which comprises a core tube, a concrete-filled steel tube column, a connecting piece, a concrete-filled steel tube beam, a wall panel and a floor slab; There are several CFST columns; the CFST beams arranged horizontally are fixedly connected between the adjacent CFST columns through the connecting pieces; between the core tube and the adjacent CFST columns The horizontally arranged CFST beams are fixedly connected between the columns; several wall panels are stacked between the adjacent CFST beams in the vertical direction; At least one connecting rod is arranged between the wall panels, and one end of the connecting rod is screwed with a fastening nut; the other end of the connecting rod is fixedly provided with a cap head; The floor slabs are fixedly laid between the CFST beams; the CFST columns include steel pipes, the steel pipes are square steel pipes or round steel pipes, and a pouring port is opened under the steel pipes; the steel pipes are filled with light Aggregate concrete, the concrete-filled steel tube beams include box beams, and two ends of the box beams are respectively provided with pouring ports and air outlets; the box beams are filled with light aggregate concrete; The outer surface of the box girder is coated with an anti-corrosion layer.

Further, the connecting piece includes an L-shaped fixing plate, an L-shaped connecting plate, a vertical bolt rod, a horizontal bolt rod and a reinforcing rib plate; the L-shaped fixing plate is respectively provided above and below the concrete-filled steel tube beam and the L-shaped connecting plate; the vertical plate surface of the L-shaped fixing plate is fixed on the concrete-filled steel tubular column; the vertical bolt rod penetrates the horizontal plate of the L-shaped fixing plate and the concrete-filled steel tubular beam and the horizontal plate of the L-shaped connecting plate; the horizontal bolt rod penetrates the vertical plate of the L-shaped connecting plate and the steel tube concrete column; one end of the vertical bolt rod is screwed with a fixing nut, and the The other end of the vertical bolt rod is fixed with a bolt cap head; one end of the horizontal bolt rod is screwed with a fixing nut, and the other end of the horizontal bolt rod is fixed with a bolt cap head; At least one reinforcing rib, two adjacent sides of the reinforcing rib are respectively fixed on the horizontal plate surface and the vertical plate surface of the L-shaped connecting plate.

Further, when the steel pipe is a square steel pipe, a right-angle connecting block is welded and fixed between the adjacent concrete-filled steel tube beams; the top edge of the right-angle connecting block is welded and fixed on the horizontal plate of the L-shaped fixing plate. On the edge, the bottom edge of the right-angle connecting block is welded and fixed on the horizontal plate edge of the L-shaped connecting plate.

Further, when the steel pipe is a round steel pipe, a first connecting plate is welded and fixed between the horizontal plates of the adjacent L-shaped fixing plates; between the horizontal plates of the adjacent L-shaped connecting plates A second connecting plate is welded and fixed; a first arc-shaped plate is welded and fixed between the first connecting plate and the second connecting plate; the two sides of the first arc-shaped plate are respectively fixed on the adjacent On the concrete-filled steel tube beam; a second arc-shaped plate is welded and fixed between the vertical plates of the adjacent L-shaped connecting plates; the top edge of the second arc-shaped plate is welded with the second connecting plate Fixing; between the first connecting plate and the second connecting plate, a reinforcing rib plate fixed perpendicular to the first arc-shaped plate is welded and fixed; between the second connecting plate and the second arc-shaped plate Reinforcing rib plates are fixed between the plates.

Further, two diagonal-stayed columns are arranged between the adjacent CFST beams; one end of the diagonal-stayed columns is fixed on a reinforcing rib arranged on the L-shaped connecting plate; The other end of the column is fixed on the concrete-filled steel tube beam, which is used to bear the gravity in the vertical direction, and is used to support the shear wall in the lateral direction to improve the wind resistance and seismic performance. "X" shape setting.

Further, reinforcing columns are fixedly arranged between the CFST beams adjacent in the vertical direction; the connecting rods and the reinforcing columns are connected by connecting bolts; one end of the connecting bolts is fixed with the connecting The connecting ring penetrates the wall plate and is sleeved on the connecting rod, the other end of the connecting bolt penetrates the reinforcing column, and is screwed with an adjusting nut.

Further, one side of the wall panel is integrally formed with a clamping block, and the other side of the wall panel is integrally formed with a clamping slot matched with the clamping block. The card block and the card slot are engaged with each other.

Further, the wall panels are horizontally stacked between the adjacent concrete-filled steel tube beams; a U-shaped clamping plate is fixed on the outer wall of the concrete-filled steel tube beam, and a horizontal plate of the U-shaped clamping plate is provided with U-shaped groove; the parts of the connecting rod located on both sides of the wall panel are respectively inserted in the U-shaped groove, and the diameter of the fastening nut and the diameter of the cap head are both larger than the U-shaped groove The width of the U-shaped groove is larger than the diameter of the connecting rod.

Further, the wall panels are vertically arranged and installed between the adjacent CFST beams, and fixed steel plates are arranged on both sides of the wall panels, and both sides of the fixed steel plates are fixed on the adjacent CFST beams. on the beam; both ends of the connecting rod respectively penetrate the fixed steel plate; light aggregate concrete is filled between the fixed steel plate and the wall plate.

Another aspect of the present utility model also discloses a method for assembling a concrete-filled steel tube prefabricated building, which includes the following steps: (1) building a frame; (2) pouring lightweight aggregate concrete; (3) installing a floor slab; (4) ) Install wall panels; (5) Fill gaps;

(1) Building the frame: Steel pipes are fixed vertically and horizontally at a certain interval on the basis of the surrounding of the core tube, and then the box girder is fixed on the steel pipe through the connector to complete the construction of the frame.

(2) Pouring light aggregate concrete: pour the mixed light aggregate concrete into the pouring port of the steel pipe fixed in step (1) and the pouring port of the box girder respectively; until the liquid level of the light aggregate concrete reaches the top of the steel pipe Stop at the opening and the air outlet of the box girder; after the lightweight aggregate concrete is dried and solidified, a concrete-filled steel tube column and a concrete-filled steel tube beam will be formed.

(3) Install floor slabs: in step (2), install floor slabs on the adjacent concrete-filled steel tubular beams on the same floor, and after the installation is completed, pour light aggregate concrete onto the floor slabs and their joints;

(4) Install the wall panel: use a crane to hoist the wall panel between two vertically adjacent concrete-filled steel tube beams. , to complete the installation of the wall panel.

(5) Filling gaps: Use bonding mortar to fill the gaps between the wall panels, the gaps between the wall panels and the CFST columns, and the gaps between the wall panels and the CFST beams.

Further, two oblique-stayed columns are welded between the two adjacent box beams fixed in step (1); one end of the oblique-stayed column is welded and fixed on the reinforcing rib on the L-shaped connecting plate; The other end of the column is welded and fixed to the box girder below.

Further, in step (4), the wall panels are stacked horizontally, and then the connecting rods are inserted through the U-shaped groove above the wall panel, the stacked wall panel, and the U-shaped groove below the wall panel in turn, and then the fastening nuts are inserted. Screw on the connecting rod and tighten.

Further, reinforcement columns are welded and fixed between the adjacent box beams in the vertical direction fixed in step (1), connecting bolts are movably penetrated through the reinforcement columns, and the walls to be stacked in step (4) One side of the plate is drilled with a hole that communicates with the hole of the connecting rod, and it is stacked to the position opposite to the connecting bolt, and then the connecting ring on the connecting bolt is inserted into the drilled hole. After the stacking is completed, the connection is made. The rod is inserted through the U-shaped groove above the wall panel, the stacked wall panel, the connecting ring and the U-shaped groove below the wall panel in turn, and then the adjusting nut on the connecting bolt is tightened to strengthen the wall panel and the concrete-filled steel tube beam and For the connection between the concrete-filled steel tubular columns, finally screw the fastening nut on the connecting rod and tighten it.

Further, in step (4), the wall panels are vertically arranged and arranged, and fixed steel plates are fitted on both sides of the placed wall panels, and both sides of the fixed steel plates are welded on the concrete-filled steel tube beams, and then the connecting rods are arranged in turn. Pass through the fixed steel plate on one side of the wall panel, the placed wall panel and the fixed steel plate on the other side of the wall panel, then screw the fastening nut on the connecting rod and tighten it; The formwork is installed between them to form a closed space, and finally the light aggregate concrete is filled into the closed space, and the formwork is removed until the light aggregate concrete is dried and solidified.

The advantages of the utility model: 1. The utility model has a simple structure and is easy to realize; the main load-bearing structure adopts a concrete-filled steel tube frame structure, which has large bearing capacity, light weight and superior seismic performance; 2. The main load-bearing structure of the present utility model adopts a concrete-filled steel tubular frame. Structure, compared with conventional steel structure buildings, it saves 50% of steel, and the cost is reduced. Compared with conventional reinforced concrete buildings, it saves 50% of concrete. The structure is lighter and the stress state is good. Compared with the same The cross-sectional area of reinforced concrete beams and reinforced concrete columns has better flexural performance and compressive capacity. Therefore, when reaching a certain flexural performance and compressive capacity, the cross-sectional area of CFST beams and CFST columns is smaller than that of reinforced concrete beams. The cross-sectional area of the reinforced concrete column increases the usable area of the house and makes the indoor space more regular; 3. The wall panel adopted in the present invention is lighter in weight, so the bearing capacity of the CFST beam and the CFST column is reduced, Furthermore, compared with conventional steel structure buildings and reinforced concrete buildings, the cross-sectional area of the CFST beam and the CFST column of the present invention can be reduced, which saves the consumption of steel and concrete; 4. The assembling method of the present invention is simple, convenient, and relatively Compared with the traditional reinforced concrete construction period, the construction period is significantly shorter, less construction waste is generated, and dust and noise pollution during construction are reduced.

Description of drawings:

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention.

FIG. 2 is a partial enlarged view of part A in FIG. 1 .

Figure 3 is a schematic diagram of the connection structure of the round steel pipe, the box girder and the connecting piece.

Figure 4 is a schematic diagram of the connection structure of the square steel pipe, the box girder and the connecting piece.

FIG. 5 is a schematic cross-sectional view of part B-B in FIG. 4 .

FIG. 6 is a schematic structural diagram of horizontally stacked wall panels.

FIG. 7 is a schematic cross-sectional view of part C-C in FIG. 6 .

FIG. 8 is a schematic structural diagram of vertically arranging wall panels.

FIG. 9 is a schematic structural diagram of a U-shaped card board.

CFST column 1, steel pipe 1.1, connecting piece 2, L-shaped fixing plate 2.1, L-shaped connecting plate 2.2, vertical bolt rod 2.3, horizontal bolt rod 2.4, right-angle connecting block 2.5, reinforcing rib plate 2.6, fixing nut 2.7, bolt Cap head 2.8, first connecting plate 2.9, second connecting plate 2.10, first arc plate 2.11, second arc plate 2.12, concrete filled steel tube beam 3, box beam 3.1, wall plate 4, clamping block 4.1, clamping slot 4.2 , floor plate 5, connecting rod 6, tightening nut 7, cap head 8, reinforcing column 9, connecting bolt 10, connecting ring 11, adjusting nut 12, U-shaped card plate 13, U-shaped groove 13.1, fixed steel plate 14, core Cylinder 15, oblique-stayed column 16.

Detailed ways:

The present utility model will be further described in detail below through embodiments in conjunction with the accompanying drawings.

Embodiment 1: As shown in Figures 1-9, a structure of a CFST prefabricated building includes a core tube 15, a CFST column 1, a connector 2, a CFST beam 3, a wall panel 4 and a floor panel 5; A number of concrete-filled steel tubular columns 1 are arranged vertically and horizontally around the core tube 15. The core tube 15 has been published with the application number CN201721673943.6 and the application document titled "A Core Tube of Prefabricated Cross Truss Shear Wall"; A horizontally arranged CFST beam 3 is fixedly connected between the CFST columns 1 through the connector 2; a horizontally arranged CFST beam 3 is fixedly connected between the core tube 15 and the adjacent CFST column 1; A number of wall panels 4 are stacked between the CFST beams 3 adjacent in the direction, and the wall panels 4 have an application number of CN201811128503.1, and the name is "a high-strength gypsum-based foamed lightweight thermal insulation material and its preparation method. "The application document discloses, the adopted wall panel 4 is lighter in weight, therefore the bearing capacity of the CFST beam 3 and the CFST column 1 is reduced, and then compared with conventional steel structure buildings and reinforced concrete buildings, the steel pipe of the present utility model is The cross-sectional area of the concrete beam 3 and the CFST column 1 can be reduced, saving the amount of steel and concrete; at least one connecting rod 6 is arranged between the wall panels 4 between the adjacent CFST beams 3 for fixing the wall Plate 4, so that a plurality of wall panels 4 are connected as a whole, and one end of the connecting rod 6 is screwed with a fastening nut 7; the other end of the connecting rod 6 is fixedly provided with a cap head 8; A floor slab 5 is fixedly laid between the beams 3, and the floor slab 5 has been disclosed in the application document with the application number of CN201810258426.5 and the title of "a high-strength light-weight thermal insulation floor slab and its preparation method"; the CFST column 1 includes a steel tube 1.1, the steel pipe 1.1 is a square steel pipe or a round steel pipe, and a pouring port is opened under the steel pipe 1.1; the light aggregate concrete is filled in the steel pipe 1.1, and the concrete-filled steel tube beam 3 includes a box beam 3.1, which are opened at both ends of the box beam 3.1. There is a pouring port and an air outlet; the box girder 3.1 is filled with light aggregate concrete, and the application document for the light aggregate concrete has been published with the application number of CN201810258399.1 and the title of "A Lightweight Aggregate Bending Concrete"; The outer surface of the steel pipe 1.1 and the box girder 3.1 is coated with an anti-corrosion layer to prevent the steel pipe 1.1 and the box girder 3.1 from being rusted and damaged and prolong their service life.

The connector 2 includes an L-shaped fixed plate 2.1, an L-shaped connecting plate 2.2, a vertical bolt rod 2.3, a horizontal bolt rod 2.4 and a reinforcing rib plate 2.6; above and below the concrete-filled steel tube beam 3 are respectively provided with L-shaped fixed plates 2.1 and 2.1 The L-shaped connecting plate 2.2 and the L-shaped connecting plate 2.2 can correct the CFST beam 3 to make it perpendicular to the CFST column 1; the vertical plate surface of the L-shaped fixing plate 2.1 is fixed on the CFST column 1; the vertical bolt rod 2.3 The horizontal plate that penetrates the L-shaped fixing plate 2.1, the CFST beam 3 and the horizontal plate of the L-shaped connecting plate 2.2; the horizontal bolt rod 2.4 penetrates the vertical plate of the L-shaped connecting plate 2.2 and the CFST column 1, located in the CFST beam 3 The vertical bolt rod 2.3 and the horizontal bolt rod 2.4 located in the CFST column 1 play the role of strengthening the lightweight aggregate concrete; the vertical plate of the L-shaped connecting plate 2.2 is attached to the pipe wall of the steel pipe 1.1; the vertical bolts One end of the rod 2.3 is screwed with a fixing nut 2.7, the other end of the vertical bolt rod 2.3 is fixed with a bolt cap head 2.8; one end of the horizontal bolt rod 2.4 is screwed with a fixing nut 2.7, and the other end of the horizontal bolt rod 2.4 is fixed with a bolt cap Head 2.8; at least one reinforcing rib 2.6 is arranged on the L-shaped connecting plate 2.2, and the two adjacent sides of the reinforcing rib 2.6 are respectively fixed on the horizontal and vertical plate surfaces of the L-shaped connecting plate 2.2; when the steel pipe 1.1 is In the case of square steel pipes, right-angle connecting blocks 2.5 are welded and fixed between adjacent CFST beams 3; It is welded and fixed on the edge of the horizontal plate of the L-shaped connecting plate 2.2, so that the connecting parts 2 form a whole and improve its mechanical properties; when the steel pipe 1.1 is a round steel pipe, between the horizontal plates of the adjacent L-shaped fixing plate 2.1 The first connecting plate 2.9 is welded and fixed; the second connecting plate 2.10 is welded and fixed between the horizontal plates of the adjacent L-shaped connecting plates 2.2; the second connecting plate 2.10 is welded and fixed between the first connecting plate 2.9 and the second connecting plate 2.10 An arc-shaped plate 2.11; the two sides of the first arc-shaped plate 2.11 are respectively fixed on the adjacent concrete-filled steel tube beams 3; a second arc-shaped plate is welded and fixed between the vertical plates of the adjacent L-shaped connecting plates 2.2 Plate 2.12; the top edge of the second arc-shaped plate 2.12 is welded and fixed to the second connecting plate 2.10; between the first connecting plate 2.9 and the second connecting plate 2.10, a reinforcing rib that is perpendicular to the first arc-shaped plate 2.11 is welded and fixed Plate 2.6; between the second connecting plate 2.10 and the second arc-shaped plate 2.12, a reinforcing rib plate 2.6 is fixed, so that the connecting pieces 2 are integrally formed and their mechanical properties are improved.

Two diagonal-stayed columns 16 are arranged between adjacent concrete-filled steel tube beams 3; one end of the diagonal-stayed columns 16 is fixed on the reinforcing rib 2.6 arranged on the L-shaped connecting plate 2.2; the other end of the diagonal-stayed columns 16 is fixed On the CFST beam 3, it is used to bear the gravity vertically, and it is used to support the shear wall in the lateral direction, so as to improve the wind resistance and earthquake resistance.

A reinforcing column 9 is fixedly arranged between the CFST beams 3 adjacent in the vertical direction; the connecting rod 6 and the reinforcing column 9 are connected by a connecting bolt 10; one end of the connecting bolt 10 is fixed with a connecting ring 11; the connecting ring 11 penetrates through The wall plate 4 is sleeved on the connecting rod 6 , and the other end of the connecting bolt 10 penetrates the reinforcing column 9 and is screwed with an adjusting nut 12 .

One side of the wall panel 4 is integrally formed with a clamping block 4.1, the other side of the wall panel 4 is integrally formed with a clamping slot 4.2 matched with the clamping block 4.1, and the clamping block 4.1 and the clamping slot 4.2 of the adjacent wall panels 4 are integrally formed. interlock with each other.

The wall panels 4 are horizontally stacked between the adjacent concrete-filled steel tube beams 3; a U-shaped clip plate 13 is fixed on the outer wall of the concrete-filled steel tube beam 3, and a U-shaped groove 13.1 is opened on the horizontal plate of the U-shaped clip plate 13; connection; The parts of the rod 6 located on both sides of the wall panel 4 are respectively inserted into the U-shaped grooves 13.1. The diameter of the fastening nut 7 and the diameter of the cap head 8 are both larger than the width of the U-shaped groove 13.1, and the width of the U-shaped groove 13.1 is larger than that of the connection. The diameter of the rod 6.

The wall panels 4 are vertically arranged and installed between the adjacent CFST beams 3, and fixed steel plates 14 are arranged on both sides of the wall panels 4, and both sides of the fixed steel plates 14 are fixed on the adjacent CFST beams 3; The two ends respectively penetrate through the fixed steel plate 14 ; light aggregate concrete is filled between the fixed steel plate 14 and the wall panel 4 .

The utility model has a simple structure and is easy to implement; the main load-bearing structure adopts a concrete-filled steel tube frame structure, which has large bearing capacity, light dead weight and superior seismic performance; the main load-bearing structure of the present utility model adopts a concrete-filled steel tube frame structure, which saves 50% compared to conventional steel structure buildings. % steel, the cost is reduced, 50% concrete is saved compared to conventional reinforced concrete buildings, the structure is lighter, and the stress state is good. Compared with reinforced concrete beams and steel bars of the same cross-sectional area, CFST beam 3 and CFST column 1 Concrete columns have better flexural resistance and compressive resistance. Therefore, when a certain flexural resistance and compressive resistance are achieved, the cross-sectional areas of CFST beam 3 and CFST column 1 are smaller than those of reinforced concrete beams and reinforced concrete columns. The area increases the usable area of the house, and also makes the interior space regular.

Embodiment 2: A method for assembling the structure of a CFST prefabricated building according to Embodiment 1, which includes the following steps: (1) building a frame; (2) pouring lightweight aggregate concrete; (3) installing floor slabs; (4) ) Install wall panels; (5) Fill gaps;

(1) Building the frame: Steel pipes 1.1 are fixed vertically and horizontally at a certain distance on the basis of the core tube 15, and then the box beam 3.1 is fixed on the steel pipe 1.1 through the connector 2 to complete the construction of the frame.

(2) Pouring light aggregate concrete: pour the mixed light aggregate concrete into the pouring port of the steel pipe 1.1 and the pouring port of the box girder 3.1 fixed in step (1) respectively; until the liquid level of the light aggregate concrete reaches Stop at the top opening of the steel pipe 1.1 and the air outlet of the box girder 3.1; after the lightweight aggregate concrete is dried and solidified, the CFST column 1 and the CFST beam 3 are formed.

(3) install floor slab: in step (2), install floor slab 5 on the adjacent concrete-filled steel tube beams 3 on the same floor, and pour light aggregate concrete on the floor slab 5 and its connection after the installation is completed;

(4) Installation of wall panels: The wall panels 4 are hoisted between two vertically adjacent concrete-filled steel tube beams 3 by a crane, and the blocks 4.1 of the adjacent wall panels 4 are clamped in the clamping slots 4.2, and then connected by connecting The rod 6 fixes the wall panel 4 to complete the installation of the wall panel 4 .

(5) Filling gaps: use bonding mortar to fill the gaps between the wall panels 4 , the gaps between the wall panels 4 and the CFST columns 1 , and the gaps between the wall panels 4 and the CFST beams 3 .

When the shear wall needs to be erected, firstly, two diagonal-stayed columns 16 are welded between the two adjacent box beams 3.1 fixed in step (1); one end of the diagonal-stayed column 16 is welded and fixed to the L-shaped connecting plate On the reinforcing rib plate 2.6 on 2.2; the other end of the cable-stayed column 16 is welded and fixed on the box girder 3.1 below.

In step (4), the wall panels 4 are stacked horizontally, and then the connecting rods 6 are inserted through the U-shaped grooves 13.1 above the wall panels 4, the stacked wall panels 4 and the U-shaped grooves 13.1 below the wall panels 4 in turn, and then Screw the fastening nut 7 on the connecting rod 6 and tighten it.

A reinforcing column 9 is welded and fixed between the adjacent box beams 3.1 in the vertical direction fixed in step (1), and connecting bolts 10 are movably penetrated through the reinforcing column 9. One side of the wall panel 4 is drilled with a hole that communicates with the hole through which the connecting rod 6 is inserted, and it is stacked in a position opposite to the connecting bolt 10, and then the connecting ring 11 on the connecting bolt 10 is inserted into the drilled hole to complete. After stacking, insert the connecting rod 6 through the U-shaped groove 13.1 above the wall panel 4, the stacked wall panel 4, the connecting ring 11 and the U-shaped groove 13.1 below the wall panel 4 in sequence, The adjusting nut 12 is tightened, and finally the tightening nut 7 is screwed on the connecting rod 6 and tightened.

In step (4), the wall panels 4 are arranged vertically in turn, and fixed steel plates 14 are fitted on both sides of the placed wall panels 4, and both sides of the fixed steel plates 14 are welded on the concrete-filled steel tube beam 3, and then the connection is made. The rod 6 passes through the fixed steel plate 14 on one side of the wall panel 4, the placed wall panel 4 and the fixed steel plate 14 on the other side of the wall panel 4 in turn, and then the fastening nut 7 is screwed on the connecting rod 6 and tightened. Then install the template between the fixed steel plate 14 and the CFST column 1 to form a closed space, and finally fill the closed space with lightweight aggregate concrete until the lightweight aggregate concrete dries and solidifies and then remove the template.

The assembling method of the utility model is simple and convenient, and compared with the traditional reinforced concrete construction period, the construction period is obviously shortened, the construction waste generated is less, and the dust and noise pollution in the construction process are reduced.

Experiment 1: CFST column: the section diameter is 400mm, the wall thickness of the steel tube is 6mm; the length is 3180mm; The bearing capacity of the concrete column is 6938kN; the bearing capacity of the reinforced concrete column is 2607kN; it can be seen that the CFST column has a better bearing capacity than the reinforced concrete column with the same cross-sectional area, and then it can be seen that the CFST column has a better bearing capacity than the reinforced concrete column with the same cross-sectional area. Reinforced concrete columns have better flexural and compressive properties.

The above are the preferred embodiments of the present invention. For those of ordinary skill in the art, some improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the present invention. The scope of protection of the utility model.

Claims (9)

1. A structure of a concrete filled steel tube assembly type building is characterized by comprising a core tube, a concrete filled steel tube column, a connecting piece, a concrete filled steel tube beam, a wallboard and a floor plate; a plurality of the steel pipe concrete columns are arranged around the core cylinder in a longitudinal and transverse mode; the horizontally arranged steel tube concrete beams are fixedly connected between the adjacent steel tube concrete columns through the connecting pieces, and the horizontally arranged steel tube concrete beams are fixedly connected between the core barrel and the adjacent steel tube concrete columns; a plurality of the wallboards are stacked between the adjacent steel pipe concrete beams in the vertical direction; at least one connecting rod penetrates through the wall plates between the adjacent steel pipe concrete beams, and one end of each connecting rod is in threaded connection with a fastening nut; the other end of the connecting rod is fixedly provided with a cap head; the floor plates are fixedly laid between the adjacent steel pipe concrete beams in the horizontal direction of each floor; the concrete-filled steel tube column comprises a steel tube, the steel tube is a square steel tube or a round steel tube, and a pouring opening is formed below the steel tube; the steel tube is filled with light aggregate concrete, the steel tube concrete beam comprises a box beam, and two ends of the box beam are respectively provided with a pouring opening and an air outlet; and light aggregate concrete is filled in the box girder.

2. The structure of a concrete filled steel tube prefabricated building according to claim 1, wherein the connecting members comprise L-shaped fixing plates, L-shaped connecting plates, vertical bolt rods, horizontal bolt rods and reinforcing ribs; the L-shaped fixing plate and the L-shaped connecting plate are respectively arranged above and below the steel pipe concrete beam; the vertical plate surface of the L-shaped fixing plate is fixed on the concrete-filled steel tube column; the vertical bolt rod penetrates through the horizontal plate of the L-shaped fixing plate, the steel pipe concrete beam and the horizontal plate of the L-shaped connecting plate; the horizontal bolt rod penetrates through the vertical plate of the L-shaped connecting plate and the concrete-filled steel tube column; one end of the vertical bolt rod is in threaded connection with a fixing nut, and the other end of the vertical bolt rod is fixed with a bolt cap head; one end of the horizontal bolt rod is in threaded connection with a fixing nut, and the other end of the horizontal bolt rod is fixed with a bolt cap head; the L-shaped connecting plate is provided with at least one reinforcing rib plate, and two adjacent edges of the reinforcing rib plate are respectively fixed on the horizontal plate surface and the vertical plate surface of the L-shaped connecting plate.

3. The structure of a concrete filled steel tube fabricated building according to claim 2, wherein when the steel tubes are square steel tubes, right-angle connecting blocks are welded and fixed between adjacent concrete filled steel tube beams; the top edge of the right-angle connecting block is welded and fixed on the horizontal plate edge of the L-shaped fixing plate, and the bottom edge of the right-angle connecting block is welded and fixed on the horizontal plate edge of the L-shaped connecting plate.

4. The structure of a concrete filled steel tube fabricated building according to claim 2, wherein when the steel tube is a circular steel tube, a first connecting plate is fixedly welded between the horizontal plates of the adjacent L-shaped fixing plates; a second connecting plate is fixedly welded between the adjacent horizontal plates of the L-shaped connecting plates; a first arc-shaped plate is fixedly welded between the first connecting plate and the second connecting plate; two side edges of the first arc-shaped plate are respectively fixed on the adjacent steel pipe concrete beams; a second arc-shaped plate is fixedly welded between the adjacent vertical plates of the L-shaped connecting plate; the top edge of the second arc-shaped plate is fixedly welded with the second connecting plate; a reinforcing rib plate vertically fixed with the first arc-shaped plate is fixedly welded between the first connecting plate and the second connecting plate; and a reinforcing rib plate is fixed between the second connecting plate and the second arc-shaped plate.

5. The structure of a concrete filled steel tube prefabricated building according to any one of claims 2 to 4, wherein two diagonal tension columns are provided between adjacent concrete filled steel tube beams; one end of the diagonal tension column is fixed on a reinforcing rib plate arranged on the L-shaped connecting plate; the other end of the diagonal tension column is fixed on the steel pipe concrete beam, and the two diagonal tension columns are arranged in a V shape or an X shape.

6. The structure of a concrete filled steel tube prefabricated building according to claim 1, wherein a reinforcing column is fixedly arranged between the vertically adjacent concrete filled steel tube beams; the connecting rod is connected with the reinforcing column through a connecting bolt; a connecting ring is fixed at one end of the connecting bolt; the connecting ring penetrates through the wall plate and is sleeved on the connecting rod, and the other end of the connecting bolt penetrates through the reinforcing column and is in threaded connection with an adjusting nut.

7. The structure of claim 1, wherein the wall panel has a clamping block integrally formed on one side thereof, and a clamping groove matched with the clamping block integrally formed on the other side thereof, and the clamping block and the clamping groove of the adjacent wall panel are clamped with each other.

8. A concrete filled steel tube fabricated building structure according to claim 7, wherein said wall panels are horizontally stacked between adjacent said concrete filled steel tube beams; a U-shaped clamping plate is fixed on the outer wall of the steel pipe concrete beam, and a horizontal plate of the U-shaped clamping plate is provided with a U-shaped groove; the connecting rod is located the part of the both sides of wallboard is inserted respectively and is established U type inslot, fastening nut's diameter with the diameter of cap head all is greater than the width in U type groove, the width in U type groove is greater than the diameter of connecting rod.

9. The structure of a concrete filled steel tube assembly type building according to claim 7, wherein the wall panels are vertically arranged and installed between the adjacent steel tube concrete beams, fixing steel plates are arranged on two sides of the wall panels, and two sides of each fixing steel plate are fixed on the adjacent steel tube concrete beams; two ends of the connecting rod respectively penetrate through the fixed steel plate; and light aggregate concrete is filled between the fixed steel plate and the wallboard.

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