CN112031175A - A kind of prefabricated box house structure and construction method thereof - Google Patents

Abstract

The invention discloses an assembled box-type house structure which comprises a standard layer unit, a top layer unit and a bottom layer unit, wherein the standard layer unit comprises four vertically-arranged standard layer unit square tube stand columns and a special assembled integrated floor system for the standard layer unit, the top of the standard layer unit is provided with the standard layer unit or the top layer unit, the structure of the top layer unit is similar to that of the standard layer unit, the top layer unit comprises four vertically-arranged top layer unit square tube stand columns and the special assembled integrated floor system for the top layer unit, the bottom of the standard layer unit is provided with the standard layer unit or the bottom layer unit, the standard layer units are mutually connected, the bottom layer unit is horizontally provided with the other bottom layer units in the peripheral direction, and the top layer unit is horizontally provided with the other top layer units. The invention has the beneficial effects that: the utility model provides a more modularization, the more flexible constitutional unit of combination, strengthened the unit at vertical and level to the convenience of connecting, improved assembled structure's wholeness.

Description

A kind of prefabricated box house structure and construction method thereof

technical field

The invention belongs to the technical field of box-type houses, and in particular relates to a prefabricated box-type house structure and a construction method thereof.

Background technique

In the context of the country's vigorous promotion of the development of prefabricated buildings, prefabricated box houses have good prospects as a green building that is efficient, energy-saving, environmentally friendly, and in line with sustainable development guidelines. However, the existing prefabricated box houses, whether it is a traditional container house or a packing box, have the problems of discontinuous vertical components and weak joint connection stiffness. The structural system and the construction method ensure the continuity of the vertical members and the connection stiffness of the nodes, and at the same time have the characteristics of convenient packing, convenient transportation and installation of the box-type house.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions:

A prefabricated box-type house structure includes a standard floor unit, the standard floor unit includes four vertically arranged standard floor unit square tube columns, and the upper, middle and lower relative positions of each standard floor unit square tube column are provided with Multiple bolt holes, the multiple bolt holes on the standard floor unit square tube column horizontally and vertically penetrate the standard floor unit square tube column, the middle of the standard floor unit square tube column is welded with two positioning supports, every two standard floor units There is a standard floor unit "C" beam between the square tube columns. The standard floor unit square tube column and the standard floor unit "C" beam together form a rectangular frame structure. The standard floor unit "C" beam is provided with Standard floor prefabricated monolithic floor slab, standard floor unit "C" beam and standard floor prefabricated monolithic floor slab are connected by bolts to form a special assembled monolithic floor for standard floor unit, top unit is installed on top of standard floor unit, structure of top unit Similar to the standard floor unit, the top unit includes four vertically arranged top unit square tube columns. The upper and lower relative positions of each top unit square tube column are provided with multiple bolt holes. Each bolt hole penetrates the top unit square tube column horizontally and longitudinally, two positioning supports are welded on the upper part of the top unit square tube column, and there is a top unit "C" beam between every two top unit square tube columns. The structure of the unit "C" beam is the same as that of the standard floor unit "C" beam. The top unit "C" beam is fixedly connected to the top of the top unit square tube column, and the top unit square tube column and the top unit "C" type The beams together form a rectangular frame structure. The top unit "C" beam is installed with the top unit prefabricated monolithic floor. The top unit "C" beam and the top unit prefabricated monolithic floor are connected by bolts to form a special assembly for the top unit. Floor, the bottom unit of the standard floor unit is provided with a ground floor unit, the ground floor unit includes four vertically arranged square tube columns of the bottom unit, the connection structure of the square tube column of the top unit and the "C" beam of the top unit and the standard floor unit "C" The connection structure of the beam and the square tube column of the standard floor unit is the same. The standard floor unit is provided with a number of other standard floor units in the horizontal direction, and the multiple standard floor units are connected to each other. Unit, a plurality of bottom units are connected to each other, a plurality of other top units are arranged around the horizontal direction of the top unit, a plurality of top units are connected to each other, the top unit square tube column and the corresponding standard layer unit square tube column are fixedly connected through the inner sleeve. , the bottom unit and the standard layer unit are fixedly connected through the corresponding inner sleeve.

Further, the relative positions of the four corners of the prefabricated monolithic floor slab of the top unit are provided with gaps for avoiding the square tube columns of the top unit, and the relative positions of the four corners of the prefabricated monolithic floor slab of the standard floor are provided to avoid the standard floor unit. The gap of the square tube column; the positions of the four top unit square tube columns and the four standard floor unit square tube columns and the four bottom unit square tube columns correspond respectively, and the position of the top unit prefabricated integral floor slab is the same as that of the standard floor unit prefabricated integral floor slab. The position of the floor slab corresponds.

Further, the standard floor unit square tube column and the bottom unit square tube column are provided with a bottom plate at the bottom, and the lower part of the bottom unit square tube column is provided with a plurality of studs around the height within the height range of about 3 times the column section width, and the bottom unit square tube column The front side, the rear side, the left side, and the bottom of the right side are provided with a semi-oblong hole in relative positions, and the bottom plate is provided with a plurality of anchor bolt holes.

Further, the connection structure between adjacent top-level units and the connection structure between adjacent standard-level units are the same; when the standard-level unit square tube columns inside two adjacent standard-level units are fixedly connected, the standard-level unit There is an in-line packing plate between the tube column and the standard floor unit square tube column. When the standard floor unit square tube column inside the adjacent three standard floor units is fixedly connected, the standard floor unit square tube column and the standard floor unit square tube column are connected. There is an "L"-shaped filling plate between the four adjacent standard floor units. When the standard floor unit square tube columns in the adjacent four standard floor units are fixedly connected, there is a cross-shaped filling plate between the standard floor unit square tube column and the standard floor unit square tube column. .

Further, end plates are provided at both ends of the "C" beam of the standard floor unit, the size of the end plate is larger than the cross-sectional dimension of the "C" beam of the standard floor unit, and the end plate is provided with a stiffening plate for strengthening the strength of the end plate, The lower part of the end plate is in contact with the positioning support.

The construction method of the above-mentioned prefabricated box-type house structure is characterized by comprising the following steps:

S1. Install the bottom unit on the foundation, and connect the half-height bottom unit square tube column with the embedded parts in the foundation through the column foot;

S2. To install the standard floor unit square tube column in the standard floor unit, first install the inner sleeve in the lower square tube column to ensure that the corresponding opposite bolt holes of the sleeve and the square tube column are aligned, and install the square tube column located on the lower layer. Fix the sleeve in place, and then install the upper square tube column to ensure that the sleeve is aligned with the corresponding opposite bolt hole located on the upper square tube column, and ensure the verticality of the upper and lower tube columns in the vertical direction. Install the opposite bolts on the upper square tube column to complete the inner sleeve splicing of the square tube column;

S3. Install the special assembly integrated floor for the standard floor unit in the standard floor unit, and hoist the special assembled integrated floor for the standard floor unit to the storey height position, so that the end plate positioning gap on the "C" beam of the standard floor unit is the same as that of the standard floor unit. The positioning support protrusions in the middle of the square tube column of the standard floor unit are engaged; then the opposite bolts pass through the end plate, the standard floor unit square tube column and the corresponding filling plate to connect the corresponding standard floor units in the same direction. "C" beam;

S4. After the overall floor including the standard floor unit "C" beam and the standard floor prefabricated integral floor slab is fixed on site, use high-grade concrete to fill the joints between the boxes;

S5. Repeat the above steps to continue installing multiple standard floor units until the design height is met;

S6. Install the top unit, place the corresponding inner sleeve and the corresponding packing plate in place, and install the top unit square tube column through the opposite bolts to complete the splicing of the square tube column; The positioning notch of the end plate on the "C" beam of the unit is engaged with the positioning support protrusion in the middle of the square tube column of the top unit. Fix the top-level unit's special assembled one-piece floor to the top-level unit square tube column with through bolts, and finally fill the joints between the boxes with high-grade concrete.

Compared with the prior art, the beneficial effects of the present invention are:

In the present invention, the present invention adopts a "column through-type" structure, which greatly improves the continuity of the components in the vertical direction and improves the integrity of the structure compared with the existing connection form of vertical corner parts. The displacement of the structure under lateral loads can be reduced. The prefabricated monolithic floor slab used in the standard floor unit has the advantage of "one board for two purposes", that is, the prefabricated monolithic floor slab is the bottom plate of the upper layer and the top plate of the lower layer, which saves materials compared with the traditional box house and reduces the overall structure of the building. Self-weight, while reducing the cost. The splicing of the vertical members and the connection of the horizontal members are designed at different positions of the structure to avoid the complex node situation and the complex stress of the members due to the concentration of connection positions.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the structural representation of standard layer unit;

Figure 3 is an exploded view of a standard layer unit;

Fig. 4 is the structural representation of the top unit;

Figure 5 is an exploded view of the top unit;

Fig. 6 is the structural representation of bottom unit;

Fig. 7 is the structural schematic diagram of the bottom unit square tube column;

Figure 8 is a schematic diagram of a standard floor unit square tube column and a standard floor unit "C" beam;

9 is a schematic diagram of two standard layer unit square tube columns;

Figure 10 is an exploded view of two standard floor unit square tube columns;

Figure 11 is a schematic diagram of the connection of three standard layer unit square tube columns;

Figure 12 is an exploded view of the connection of three standard layer unit square tube columns;

Figure 13 is a schematic diagram of the connection of four standard layer unit square tube columns;

Figure 14 is an exploded view of the connection of four standard floor unit square tube columns;

Figure 15 is a schematic diagram of the standard floor unit square tube column and the top unit square tube column;

16 is a cross-sectional view of the standard floor unit square tube column and the top unit square tube column;

17 is a cross-sectional view of two standard floor unit square tube columns and two top unit square tube columns;

Figure 18 is a cross-sectional view of three standard floor unit square tube columns and three top unit square tube columns;

FIG. 19 is a cross-sectional view of four standard floor unit square tube columns and four top unit square tube columns.

In the picture: 1. Standard floor unit, 2. Standard floor unit square tube column, 3. Standard floor unit "C" beam, 4. Standard floor prefabricated monolithic floor, 5. Top unit, 6. Top unit square tube column , 7. Top unit "C" beam, 8. Top unit prefabricated monolithic floor, 9. Inner sleeve, 10. Bottom unit, 11. Bottom unit square tube column, 12. Bottom plate, 13. Anchor bolt hole, 14 .Semi-oblong hole, 15. Stud, 16. End plate, 17. Stiffening plate, 18. Flat-shaped filling plate, 19. "L"-shaped filling plate, 20. Cross-shaped filling plate, 21. Positioning support.

Detailed ways

Example: As shown in Figures 1 to 19, the standard floor unit 1 is included, and the standard floor unit 1 includes four standard floor unit square tube columns 2 arranged vertically, and the upper and middle parts of each standard floor unit square tube column 2 are , There are multiple bolt holes in the relative positions of the lower part. The multiple bolt holes on the standard floor unit square tube column 2 horizontally and vertically penetrate the standard floor unit square tube column 2. The middle of the standard floor unit square tube column 2 is welded with two Positioning support 21, a standard floor unit "C" beam 3 is set between every two standard floor unit square tube columns 2, and the standard floor unit square tube column 2 and the standard floor unit "C" beam 3 are jointly enclosed Rectangular frame structure, the standard floor unit "C" type beam 3 is provided with a standard floor prefabricated integral floor slab 4, and the standard floor unit "C" type beam 3 and the standard floor prefabricated integral floor slab 4 are connected by bolts to form a standard floor unit dedicated Assembling an integrated floor, the top unit 5 is installed on the top of the standard floor unit 1. The structure of the top unit 5 is similar to that of the standard floor unit 1. The top unit 5 includes four vertically arranged top unit square tube columns 6. Each top unit The upper and lower relative positions of the square tube uprights 6 are provided with a plurality of bolt holes. The plurality of bolt holes on the top unit square tube uprights 6 pass through the top unit square tube uprights 6 horizontally and vertically, and the upper part of the top unit square tube uprights 6 is welded. There are two positioning supports 21, and a top unit "C" beam 7 is arranged between every two top unit square tube columns 6. The structure of the top unit "C" beam 7 is the same as that of the standard floor unit "C" beam. 3 The same, the top unit "C" beam 7 is fixedly connected to the top of the top unit square tube column 6, and the top unit square tube column 6 and the top unit "C" beam 7 together form a rectangular frame structure, the top unit "C" The top unit prefabricated monolithic floor 8 is installed on the top of the beam 7, the top unit "C" beam 7 and the prefabricated monolithic floor 8 of the top unit are connected by bolts to form a special assembled monolithic floor for the top unit, and the bottom of the standard floor unit 1 There is a bottom unit 10, the bottom unit 10 includes four vertically arranged bottom unit square tube columns 11, the connection structure of the top unit square tube column 6 and the top unit "C" beam 7 and the standard floor unit "C" beam 3. The connection structure of the square tube column 2 is the same as that of the standard floor unit. The standard floor unit 1 is provided with a plurality of other standard floor units in the horizontal circumference direction, and the multiple standard floor units are connected to each other. The bottom unit, a plurality of bottom units are connected to each other, the top unit 5 is provided with a plurality of other top units in the horizontal peripheral direction, and the multiple top units are connected to each other, and the top unit square tube column 6 and the corresponding standard layer unit square tube column 2 pass through The inner sleeve 9 is fixedly connected, and the bottom layer unit 10 and the standard layer unit 1 are fixedly connected through the corresponding inner sleeve 9 .

The relative positions of the four corners of the prefabricated monolithic floor 8 of the top unit are provided with gaps for avoiding the square tube columns 6 of the top unit, and the relative positions of the four corners of the prefabricated monolithic floor 4 of the standard floor are provided for avoiding the standard floor units. The gap of the square tube column 2; the positions of the four top unit square tube columns 6 and the four standard floor unit square tube columns 2 and the four bottom unit square tube columns 11 correspond respectively, and the position of the top unit prefabricated integral floor slab 8 is the same as The position of the standard floor prefabricated monolithic floor slab 4 corresponds to that.

The standard floor unit square tube column 2, the bottom unit square tube column 11 is provided with a bottom plate 12 at the bottom, and the bottom unit square tube column 11 is provided with a plurality of studs 15 around the height within the height range of about 3 times the cross-sectional width of the column. The front side, rear side, left side and right side of the tube column 11 are provided with a semi-oval hole 14 at relative positions at the bottom, and the bottom plate 12 is provided with a plurality of anchor holes 13 .

The connection structure between the adjacent top-level units 5 and the connection structure between the adjacent standard-level units 1 are the same; when the standard-level unit square tube columns 2 inside two adjacent standard-level units 1 are fixedly connected, the standard-level unit Between the square tube column 2 and the standard floor unit square tube column 2, there is an in-line packing plate 18. When the standard floor unit square tube column 2 inside the adjacent three standard floor units 1 is fixedly connected, the standard floor unit square tube column 2 and the standard floor unit square tube column 2 are fixedly connected. There is an "L"-shaped packing plate 19 between the standard floor unit square tube columns 2. When the standard floor unit square tube columns 2 inside the adjacent four standard floor units 1 are fixedly connected, the standard floor unit square tube column 2 is connected to the standard floor unit square tube column 2. A cross-shaped packing plate 20 is arranged between the unit square tube uprights 2 .

The standard floor unit "C" type beam 3 is provided with end plates 16 at both ends, the size of the end plate 16 is larger than the cross-sectional dimension of the standard floor unit "C" beam 3, and the end plate 16 is provided with the end plate 16 for strengthening the strength. The stiffening plate 17 and the lower part of the end plate are in contact with the positioning support 21 .

The construction method of the above-mentioned prefabricated box-type house structure is characterized by comprising the following steps:

S1. Install the bottom unit 10 on the foundation, and connect and fix the half-height bottom unit square tube column 11 and the embedded parts in the foundation through the column foot;

S2. Install the standard layer unit square tube column 2 in the standard layer unit 1. First, install the inner sleeve 9 in the lower layer square tube column to ensure that the corresponding opposite bolt holes of the sleeve and the square tube column are aligned, and the installation is located in the lower layer. Fix the sleeve in place with the opposite bolts of the tube column, and then install the upper square tube column to ensure that the sleeve is aligned with the corresponding opposite bolt holes of the upper square tube column, and ensure that the upper and lower tube columns are in the vertical direction. Verticality, install the opposite bolts on the upper square tube column to complete the inner sleeve splicing of the square tube column;

S3. Install the integrated floor for the standard floor unit in the standard floor unit 1, and hoist the integrated floor for the standard floor unit to the height position, so that the end plate on the "C" beam 3 of the standard floor unit is positioned. The gap is engaged with the positioning support protrusion in the middle of the standard floor unit square tube column 2; then the opposite bolts pass through the end plate 16, the standard floor unit square tube column 2 and the corresponding filling plate to connect the same direction through the opposite bolts. Corresponding standard floor unit "C" beam 3;

S4. After the integral floor covering including the standard floor unit "C"-shaped beam 3 and the standard floor prefabricated integral floor slab 4 is fixed on site, use high-grade concrete to fill the joints between the boxes;

S5. Repeat the above steps to continue to install multiple standard floor units 1 until the design height is met;

S6. Install the top unit 5, place the corresponding inner sleeve and the corresponding filling plate in place, and install the top unit square tube column 6 through the opposite bolts to complete the splicing of the square tube column; then hoist the top unit dedicated assembly integrated floor, The end plate positioning notch on the "C"-shaped beam 7 of the top unit is engaged with the positioning support protrusion in the middle of the square tube column 6 of the top unit. Fix the top-level unit's special assembled one-piece floor to the top-level unit square tube column 6 with through bolts, and finally fill the joints between the boxes with high-grade concrete.

The square tube column is spliced at half the height of the floor, and the splicing method is in the form of an inner sleeve. The sleeve adopts a square section, and its external dimensions are the same as the internal dimensions of the square tube column. The opposite bolt holes opened on the four sides of the sleeve should correspond to the positions of the bolt holes at the upper and lower ends of the spliced prescription pipe column, and have the same size. Where the upper and lower square tube uprights are spliced, opposite bolts in two directions perpendicular to each other pass through the square tube uprights and the sleeve to connect the upper and lower tube uprights. At the splices of the upper and lower four, six, and eight square tube columns, place in-line, angular, and cross-shaped filling plates between the gaps between adjacent square tube columns, and pass through the opposite bolts in two directions perpendicular to each other. The square tube column, the sleeve and the packing plate connect the square tube column at the splicing point. Connection between C-beams: In the same floor plane, the C-beams in the short-side direction of two adjacent box-type houses are fixed to the adjacent two through the same set of opposite bolts and filling plates. on the square tube column. In the same way, for the two adjacent box-shaped houses on the short side, the C-beams in the long side direction are fixed on the two adjacent square tube columns through the same set of opposite bolts and packing plates. Multiple standard floor units 1 can be set on the same floor at the same level, and other standard floor units 1 can be installed on the upper and lower parts of each standard floor unit 1. Multiple standard floor units 1 are connected to each other, and multiple standard floor units A corresponding inner sleeve 9 is provided when the 1 is connected to each other.

Claims (7)

1. A prefabricated box-type house structure, characterized in that it includes a standard floor unit (1), and the standard floor unit (1) includes four vertically arranged standard floor unit square tube columns (2), each of which is a standard floor unit. The upper, middle and lower relative positions of the unit square tube column (2) are provided with a plurality of bolt holes, and the plurality of bolt holes on the standard floor unit square tube column (2) transversely and longitudinally penetrate the standard floor unit square tube column (2). ), two positioning supports (21) are welded in the middle of the standard floor unit square tube column (2), and a standard floor unit "C"-shaped beam ( 3), the standard floor unit square tube column (2) and the standard floor unit "C" beam (3) together form a rectangular frame structure, and the standard floor unit "C" beam (3) is provided with a standard floor prefabricated integral type The floor (4), the standard floor unit "C" beam (3) and the standard floor prefabricated integral floor slab (4) are connected by bolts to form a special assembled one-piece floor for the standard floor unit. The top of the standard floor unit (1) is installed with a The top unit (5), the structure of the top unit (5) is similar to the standard floor unit (1), and the top unit (5) includes four vertically arranged top unit square tube columns (6), each top unit square tube column The upper and lower relative positions of (6) are provided with a plurality of bolt holes, and the plurality of bolt holes on the top unit square tube column (6) transversely and longitudinally penetrate the top unit square tube column (6), and the top unit square tube column ( The upper part of 6) is welded with two positioning supports (21), and a top unit "C" beam (7) is arranged between each two top unit square tube columns (6). The top unit "C" beam ( 7) The structure is the same as that of the standard floor unit "C" beam (3). The top unit "C" beam (7) is fixedly connected to the top of the top unit square tube column (6). The top unit square tube column (6) ) together with the top unit "C" beam (7) to form a rectangular frame structure, the top unit "C" beam (7) is installed with a top unit prefabricated monolithic floor (8), and the top unit "C" beam ( 7) It is connected with the prefabricated integral floor slab (8) of the top unit through bolts to form a special assembled one-piece floor for the top unit. The bottom unit (10) is provided at the bottom of the standard floor unit (1), and the bottom unit (10) includes four vertical The connection structure of the square tube column (11) of the bottom unit, the square tube column (6) of the top unit and the "C" beam (7) of the top unit and the standard floor unit "C" beam (3) and the standard floor unit The connection structure of the square tube column (2) is the same, the standard floor unit (1) is provided with a plurality of other standard floor units in the horizontal circumference direction, the plurality of standard floor units are connected to each other, and the bottom unit (10) is provided with a plurality of other standard floor units in the horizontal circumference direction. Other bottom-level units, multiple bottom-level units are connected to each other, the top-level unit (5) is provided with multiple other top-level units in the horizontal peripheral direction, and the multiple top-level units are connected to each other, and the top-level unit square tube column (6) and the corresponding standard level unit The square tube column (2) is fixedly connected through the inner sleeve (9), and the bottom unit (10) and the standard layer unit (1) are fixedly connected through the corresponding inner sleeve (9). catch. 2. A prefabricated box-type house structure according to claim 1, characterized in that: the relative positions of the four corners of the prefabricated integral floor slab (8) of the top unit are provided with square tube columns (6) for avoiding the top unit ), the relative positions of the four corners of the standard floor prefabricated monolithic floor slab (4) are provided with gaps for avoiding the standard floor unit square tube uprights (2); the four top unit square tube uprights (6) and the four The positions of the standard floor unit square tube columns (2) correspond to the positions of the four ground unit square tube columns (11) respectively, and the position of the top unit prefabricated monolithic floor slab (8) corresponds to the position of the standard floor unit prefabricated monolithic floor slab (4). correspond. 3. A prefabricated box-type house structure according to claim 1, characterized in that: the standard floor unit square tube column (2), the bottom unit square tube column (11) are provided with a bottom plate (12) at the bottom, and the bottom unit square tube column (11) is provided with a bottom plate (12). A plurality of pegs (15) are arranged around the lower part of the square tube column (11) within a height range of about 3 times the cross-sectional width of the column. A semi-oblong hole (14) is arranged at the relative position of the bottom, and a plurality of anchor holes (13) are arranged on the bottom plate (12). 4. A prefabricated box-type house structure according to claim 1, characterized in that: the connection structure between adjacent top floor units (5) and the connection structure between adjacent standard floor units (1) The same; when the standard floor unit square tube column (2) inside two adjacent standard floor units (1) is fixedly connected, there is a space between the standard floor unit square tube column (2) and the standard floor unit square tube column (2). When the square tube column (2) of the standard floor unit inside the adjacent three standard floor units (1) is fixedly connected, the square tube column (2) of the standard floor unit and the square tube column (2) of the standard floor unit are fixedly connected. There is an "L"-shaped filling plate (19) between the adjacent four standard floor units (1), when the standard floor unit square tube column (2) inside the adjacent four standard floor units (1) is fixedly connected, the standard floor unit square tube column (2) and A cross-shaped packing plate (20) is arranged between the square tube uprights (2) of the standard layer unit. 5. A prefabricated box house structure according to claim 1, characterized in that: the standard floor unit "C" beam (3) is provided with end plates (16) at both ends, and the size of the end plates (16) The cross-sectional dimension of the "C"-shaped beam (3) of the standard floor unit is larger than that of the standard floor unit. The end plate (16) is provided with a stiffening plate (17) for strengthening the strength of the end plate (16), and the lower part of the end plate and the positioning support (21) touch. 6. The construction method of the above-mentioned prefabricated box-type house structure is characterized in that comprising the following steps: S1. Install the bottom unit (10) on the foundation, and connect and fix the half-height bottom unit square tube column (11) with the embedded parts in the foundation through the column foot; S2. Install the standard floor unit square tube column (2) in the standard floor unit (1), first install the inner sleeve (9) in the lower square tube column to ensure that the corresponding bolt holes of the sleeve and the square tube column are opposite to each other. Align, install the opposite bolts on the lower square tube column, fix the sleeve in place, and then install the upper square tube column to ensure that the sleeve is aligned with the corresponding opposite bolt holes located on the upper square tube column, and ensure that the upper and lower tube columns are aligned In terms of verticality in the vertical direction, install the opposite bolts on the upper square tube column to complete the inner sleeve splicing of the square tube column; S3. Install the special-purpose integrated floor for the standard-floor unit (1), and hoist the special-assembled-integrated floor for the standard-floor unit to the height position, so that the standard floor unit "C" beam (3) is on the The positioning gap of the end plate is engaged with the positioning support protrusion in the middle of the standard floor unit square tube column (2); Connect the corresponding standard layer unit "C" beam (3) in the same direction with the corresponding packing plate; S4. After the integral floor covering including the standard floor unit "C"-shaped beam (3) and the standard floor prefabricated integral floor slab (4) is fixed on site, use high-grade concrete to fill the joints between the boxes; S5. Repeat the above steps to continue installing multiple standard floor units (1) until the design height is met; S6. Install the top unit (5), place the corresponding inner sleeve and the corresponding packing plate in place, and install the top unit square tube column (6) through the opposite bolts to complete the splicing of the square tube column; then hoist the top unit as a special assembly. type floor, so that the positioning notch of the end plate on the "C" beam (7) of the top unit is engaged with the positioning support protrusion in the middle of the square tube column (6) of the top unit. 7. Fix the top-level unit's special assembly-integrated floor to the top-level unit square tube column (6) with through bolts, and finally fill the joints between the boxes with high-grade concrete.

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