Coke oven greenhouse fabricated concrete foundation and construction method thereof

Abstract

The invention discloses a coke oven greenhouse fabricated concrete foundation and a construction method thereof to solve a series of problems that in the prior art, the construction period is long, the maintenance period is long, components cannot be recycled, the environment is polluted, and the construction cost is high. The fabricated concrete foundation sequentially comprises a prefabricated cushion layer, a prefabricated lower component and a prefabricated upper component from bottom to top. First anchor bolt holes are formed in the corresponding positions of the prefabricated cushion layer and the prefabricated lower component. Second anchor bolt holes are formed in the corresponding positions of the prefabricated cushion layer, the prefabricated lower component and the prefabricated upper component; the short bolt prestressed anchorage device penetrates through the first anchor bolt hole to be connected with the prefabricated cushion layer and the prefabricated lower component. The long bolt pre-stressed anchorage device penetrates through the second anchor bolt hole to connect the prefabricated cushion layer and the prefabricated upper component; a first positioning groove is formed in the upper surface of the prefabricated cushion layer; the prefabricated lower component is arranged on the first positioning groove; a second positioning groove is formed in the upper surface of the prefabricated lower component; and the prefabricated upper component is arranged on the second positioning groove.

Description

Technical Field

[0001] The invention relates to the technical field of coke oven construction engineering, and in particular to an assembled concrete foundation of a coke oven shed and a construction method thereof. Background Art

[0002] A temporary coke oven masonry shed will be installed during the coke oven construction process. The coke oven shed foundation refers to the load-bearing component at the bottom of the coke oven shed that contacts the foundation. Its function is to transfer the weight of the structure and the load borne by the structure to the foundation. It is an important part of the coke oven shed. The existing coke oven shed foundation construction technology mainly adopts cast-in-place reinforced concrete foundation, and the conventional practice of cast-in-place reinforced concrete foundation is that the construction unit processes steel bars, templates, pouring materials and other construction processes on site according to the design drawings. After the pouring of the pouring materials is completed, they are cured under natural conditions. After the pouring materials have reached the specified strength, the upper steel columns and equipment can be installed.

[0003] However, the current construction method of cast-in-place reinforced concrete foundation of coke oven greenhouse has the following problems:

[0004] 1) Long construction period. Cast-in-place reinforced concrete foundations require multiple construction processes on site, including steel bar production, binding, formwork support, pouring of pouring materials, and maintenance of pouring materials. The processes are connected before and after, and the construction period is long.

[0005] 2) Long curing period. Cast-in-place reinforced concrete foundations need to be naturally cured on site after pouring. It takes about 14-21 days for the poured materials to reach the strength for upper brackets and equipment installation.

[0006] 3) Material waste. The cast-in-place reinforced concrete foundation needs to be poured on site and after the coke oven shed is dismantled, the cast-in-place reinforced concrete foundation will remain in the soil and cannot be recycled, resulting in material waste.

[0007] 4) Pollution to the environment. The poured reinforced concrete foundation will remain in the soil and cause certain pollution to the soil and groundwater. The vibration of concrete will cause noise pollution.

[0008] 5) High cost. Cast-in-place reinforced concrete foundations require on-site production by skilled workers of various trades, the utilization efficiency of the formwork is low, and the labor and material costs are high.

[0009] The utility model patent with announcement number CN217231911U discloses an assembled concrete foundation for installing electrical cabinets or charging piles, including an upper component, a lower component and a connecting component. The invention first hoists the prefabricated concrete upper and lower components into the foundation pit, and the upper component is located above the lower component. A number of grouting holes are reserved in the upper component and the lower component respectively. The upper and lower components are adjusted so that the connecting rods correspond to the grouting holes one by one, and the connecting rods are inserted from top to bottom into the grouting holes of the upper component and the lower component, and the grouting material is filled between the connecting rods and the grouting holes. The assembled concrete foundation still needs to pour grouting material during construction, and the strength and rigidity of the foundation structure are severely weakened, so it does not meet the requirements for safe structural use. The invention patent application with publication number CN114250802A discloses an assembled concrete foundation and a construction method thereof, including embedded parts, steel bracket columns, and sleeves. The embedded parts include a prefabricated reinforced concrete foundation and a plurality of L-shaped bolts. The plurality of L-shaped bolts are embedded in the prefabricated reinforced concrete foundation. Between the sleeve and the steel bracket column, a first cast-in-place layer and a second cast-in-place layer are sequentially arranged in a direction away from the prefabricated reinforced concrete foundation. The first cast-in-place layer is connected to the prefabricated reinforced concrete foundation as a whole, and the second cast-in-place layer is connected to the first cast-in-place layer as a whole. The concrete foundation still needs to be poured with concrete, and the problem of long construction time still exists.

[0010] Therefore, it is necessary to develop an assembled coke oven greenhouse concrete foundation that can be prefabricated in the factory, does not require pouring and maintenance, has higher quality of finished products, and has components that can be recycled. Summary of the invention

[0011] In view of the above-mentioned defects in the prior art, the present invention provides an assembled concrete foundation for a coke oven greenhouse and a construction method thereof, so as to solve a series of problems existing in the current construction method of cast-in-place reinforced concrete foundation of a coke oven greenhouse, such as long construction period, long maintenance period, inability to rotate components, environmental pollution and high construction cost.

[0012] To achieve the above-mentioned purpose, on the one hand, the present invention provides a coke oven greenhouse assembled concrete foundation, which includes, from bottom to top, a prefabricated cushion layer, a prefabricated lower component, and a prefabricated upper component:

[0013] A first anchor hole is opened at the corresponding positions of the prefabricated cushion layer and the prefabricated lower component; a second anchor hole is opened at the corresponding positions of the prefabricated cushion layer, the prefabricated lower component and the prefabricated upper component; a short bolt prestressed anchor passes through the first anchor hole to connect the prefabricated cushion layer and the prefabricated lower component; a long bolt prestressed anchor passes through the second anchor hole to connect the prefabricated cushion layer and the prefabricated upper component; curved hooks are evenly arranged on the outer edges of the prefabricated cushion layer, the prefabricated lower component and the prefabricated upper component;

[0014] A first positioning groove is formed on the upper surface of the prefabricated cushion layer; the prefabricated lower component is arranged on the first positioning groove; a second positioning groove is formed on the upper surface of the prefabricated lower component; and the prefabricated upper component is arranged on the second positioning groove.

[0015] The present invention connects a plurality of prefabricated components through long / short bolt prestressed anchors, which has the advantages of high connection strength, good stability and detachable structure. At the same time, the positioning grooves are used to stabilize the prefabricated components and reduce the risk of structural slippage, thereby obtaining an assembled concrete foundation for a coke oven greenhouse with high practical value, and solving the problems of the current coke oven greenhouse cast-in-place reinforced concrete foundation construction method, such as long construction period, long maintenance period, inability to rotate components, environmental pollution and high cost.

[0016] Furthermore, the prefabricated cushion layer, the prefabricated lower component and the prefabricated upper component are all rectangular parallelepipeds, and their length and width decrease in sequence, and their height increases in sequence. The load of the assembled concrete foundation constructed by this structure is equivalent to that of the cast-in-place concrete foundation, and can be well used as the concrete foundation of the coke oven greenhouse.

[0017] Furthermore, the arrangement line of the first anchor bolt holes is equidistant from the edge line of the prefabricated lower component; the arrangement line of the second anchor bolt holes is equidistant from the edge line of the prefabricated upper component. This technical solution allows each anchor bolt hole to be stressed evenly, ensuring connection stability.

[0018] Furthermore, the distance between the center of the first anchor hole and the edge of the prefabricated lower component is 200 mm; the distance between the center of the second anchor hole and the edge of the prefabricated upper component is 150 mm. This technical solution makes it difficult for each anchor hole to be damaged due to oblique force, further ensuring the stability of the connection.

[0019] Furthermore, the spacing between the first anchor holes along the long sides of the prefabricated cushion layer and the prefabricated lower component is 1300mm, and the spacing between the short sides is 1600mm; the spacing between the second anchor holes along the long sides of the prefabricated cushion layer and the prefabricated lower component and the prefabricated upper component is 850mm, and the spacing between the short sides is 950mm. This technical solution allows each anchor hole to be stressed evenly, ensuring stable connection between prefabricated components.

[0020] Further, when the long side length of the prefabricated lower component is less than 2000 mm and the short side length is less than 1700 mm, four anchor holes are set at the four corners where the distance between the center of the first anchor hole and the side line of the prefabricated lower component is 200 mm; when the long side length of the prefabricated upper component is less than 1100 mm and the short side length is less than 1000 mm, four anchor holes are set at the four corners where the distance between the center of the second anchor hole and the side line of the prefabricated upper component is 150 mm.

[0021] Furthermore, the depth of the first positioning groove is not greater than 1 / 3 of the height of the prefabricated cushion layer; the depth of the second positioning groove is not greater than 1 / 20 of the height of the prefabricated lower component. This technical solution ensures that the opening of the positioning groove does not affect the load of the prefabricated cushion layer and the prefabricated lower component.

[0022] On the other hand, the present invention provides a construction method for a coke oven greenhouse assembled concrete foundation, and the construction of the coke oven greenhouse assembled concrete foundation as described above comprises the following steps:

[0023] S1, passing the short bolt prestressed anchor through the first anchor hole of the prefabricated cushion layer, passing the long bolt prestressed anchor through the second anchor hole of the prefabricated cushion layer, and hoisting the prefabricated cushion layer to the foundation through the bent hook;

[0024] S2, hoisting the prefabricated lower component into the first positioning groove of the prefabricated cushion layer through the bent hook of the prefabricated lower component, adjusting to align the first anchor bolt hole, passing the short bolt prestressed anchor originally passing through the prefabricated cushion layer through the first anchor bolt hole, and passing the long bolt prestressed anchor through the second anchor bolt hole, and fastening the prefabricated cushion layer and the prefabricated lower component together by applying prestress to the short bolt prestressed anchor;

[0025] S3, hoisting the prefabricated upper member into the second positioning groove reserved on the upper surface of the prefabricated lower member, adjusting so that the second anchor holes are aligned, passing the long bolt prestressed anchor originally passing through the prefabricated cushion layer and the prefabricated lower member through the second anchor hole of the prefabricated upper member and applying prestress, and fastening the prefabricated cushion layer, the prefabricated lower member, and the prefabricated upper member together;

[0026] S4. Install steel columns on the prefabricated upper components.

[0027] In the construction method of the present invention, anchors are pre-set and prestress is applied under appropriate conditions, which not only meets the requirements of connection strength, but also makes construction more convenient and saves construction time. When the coke oven project is completed and the coke oven shed is dismantled, the assembled concrete foundation can also be dismantled and taken away for the next coke oven construction project.

[0028] Compared with the prior art, the above invention has the following advantages or beneficial effects:

[0029] The assembled concrete foundation of the present invention has a structural design and construction convenience that meet the design requirements, is effectively applicable to the coke oven greenhouse foundation, and can solve the problems of the current cast-in-place reinforced concrete foundation construction method, such as long construction period, long maintenance period, material waste, environmental pollution, high cost, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention and its features and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and emphasis is placed on illustrating the subject matter of the present invention.

[0031] Figure 1 It is a three-dimensional schematic diagram of an assembled concrete foundation of a coke oven shed according to an embodiment of the present invention;

[0032] Figure 2 It is a three-dimensional schematic diagram of a prefabricated cushion layer in one embodiment of the present invention;

[0033] Figure 3 It is a three-dimensional schematic diagram of a prefabricated lower component in one embodiment of the present invention;

[0034] Figure 4 It is a three-dimensional schematic diagram of a prefabricated upper component in one embodiment of the present invention;

[0035] Figure 5 A schematic diagram of a long bolt prestressed anchor in one embodiment of the present invention;

[0036] Figure 6 A schematic diagram of a short bolt prestressed anchor in one embodiment of the present invention;

[0037] Among them, 11. prefabricated cushion layer; 12. prefabricated lower component; 13. prefabricated upper component; 21. long bolt prestressed anchor; 22. short bolt prestressed anchor; 31. first anchor hole; 32. second anchor hole; 4. bent hook; 51. first positioning groove; 52. second positioning groove; 6. steel column. DETAILED DESCRIPTION

[0038] The structure of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0039] In the description of this application, the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0040] It should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly indicate the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0041] Example

[0042] See also Figures 1 to 6This embodiment provides a coke oven greenhouse assembled concrete foundation, which includes, from bottom to top, a prefabricated cushion layer 11, a prefabricated lower component 12, and a prefabricated upper component 13:

[0043] A first anchor hole 31 is opened at the corresponding positions of the prefabricated cushion layer 11 and the prefabricated lower member 12; a second anchor hole 32 is opened at the corresponding positions of the prefabricated cushion layer 11, the prefabricated lower member 12 and the prefabricated upper member 13; the short bolt prestressed anchor 22 passes through the first anchor hole 31 to connect the prefabricated cushion layer 11 and the prefabricated lower member 12; the long bolt prestressed anchor 21 passes through the second anchor hole 32 to connect the prefabricated cushion layer 11 and the prefabricated upper member 13; the outer peripheries of the prefabricated cushion layer 11, the prefabricated lower member 12 and the prefabricated upper member 13 are evenly provided with bent hooks 4;

[0044] A first positioning groove 51 is formed on the upper surface of the prefabricated cushion layer 11 ; the prefabricated lower component 12 is arranged on the first positioning groove 51 ; a second positioning groove 52 is formed on the upper surface of the prefabricated lower component 12 ; and the prefabricated upper component 13 is arranged on the second positioning groove 52 .

[0045] As a preferred technical solution, further: the prefabricated cushion layer 11, the prefabricated lower component 12 and the prefabricated upper component 13 are all rectangular parallelepipeds, and their length and width decrease successively, and their height increases successively. The load of this prefabricated concrete foundation is equivalent to that of the cast-in-place concrete foundation, and it can be well used as the concrete foundation of the coke oven greenhouse. This prefabricated concrete foundation is a custom design, and the corresponding split component size is selected according to the load of the coke oven greenhouse column and the engineering geological conditions. Of course, it is also possible to customize the components of the corresponding size in advance and select them according to the site requirements, such as preparing cushion layers of sizes such as 1.5×2, 2×2.5, 2.5×3 in advance. It is calculated that the site area required is not less than 6m 2 If you need a cushion layer, you can choose a 2.5×3 cushion layer.

[0046] As a preferred technical solution, further: the arrangement line of the first anchor holes 31 is equidistant from the edge line of the prefabricated lower component 12; the arrangement line of the second anchor holes 32 is equidistant from the edge line of the prefabricated upper component 13. This technical solution makes the anchor holes evenly stressed and ensures the connection stability.

[0047] As a preferred technical solution, further: the distance between the center of the first anchor hole 31 and the edge of the prefabricated lower member 12 is 200 mm; the distance between the center of the second anchor hole 32 and the edge of the prefabricated upper member 13 is 150 mm. This technical solution makes it difficult for each anchor hole to be damaged due to oblique force, further ensuring the connection stability.

[0048] As a preferred technical solution, further: the spacing of the first anchor holes 31 along the long sides of the prefabricated cushion layer 11 and the prefabricated lower component 12 is 1300 mm, and the spacing of the short sides is 1600 mm; the spacing of the second anchor holes 32 along the long sides of the prefabricated cushion layer 11 and the prefabricated lower component 12 and the prefabricated upper component 13 is 850 mm, and the spacing of the short sides is 950 mm. This technical solution allows each anchor hole to be stressed evenly, ensuring stable connection between prefabricated components. In addition, when the long side length of the prefabricated lower component 12 is less than 2000 mm and the short side length is less than 1700 mm, four anchor holes are set at the four corners at a distance of 200 mm between the center of the first anchor hole 31 and the side line of the prefabricated lower component 12; when the long side length of the prefabricated upper component 13 is less than 1100 mm and the short side length is less than 1000 mm, four anchor holes are set at the four corners at a distance of 150 mm between the center of the second anchor hole 32 and the side line of the prefabricated upper component 13.

[0049] As a preferred technical solution, further: the depth of the first positioning groove 51 is not greater than 1 / 3 of the height of the prefabricated cushion layer 11; the depth of the second positioning groove 52 is not greater than 1 / 20 of the height of the prefabricated lower component 12. This technical solution ensures that the opening of the positioning groove does not affect the load of the prefabricated cushion layer and the prefabricated lower component.

[0050] The construction method of the above-mentioned coke oven greenhouse assembled concrete foundation comprises the following steps:

[0051] S1, passing the short bolt prestressed anchor 22 through the first anchor hole 31 of the prefabricated cushion layer 11, passing the long bolt prestressed anchor 21 through the second anchor hole 32 of the prefabricated cushion layer 11, and hoisting the prefabricated cushion layer 11 to the foundation through a bent hook;

[0052] S2, hoist the prefabricated lower member 12 into the first positioning groove 51 of the prefabricated cushion layer 11 through the bent hook of the prefabricated lower member, adjust the first anchor hole 31 to align, pass the short bolt prestressed anchor 22 that originally passed through the prefabricated cushion layer through the first anchor hole 31, and pass the long bolt prestressed anchor 21 through the second anchor hole 32, and fasten the prefabricated cushion layer 11 and the prefabricated lower member 12 together by applying prestress to the short bolt prestressed anchor 22 to ensure the integrity of the connecting member;

[0053] S3, hoist the prefabricated upper member 13 into the second positioning groove 52 reserved on the upper surface of the prefabricated lower member 12, adjust so that the second anchor holes 32 are aligned, pass the long bolt prestressed anchor 21 that originally passed through the prefabricated cushion layer 11 and the prefabricated lower member 12 through the second anchor holes 32 of the prefabricated upper member 13 and apply prestress, fasten the prefabricated cushion layer 11, the prefabricated lower member 12, and the prefabricated upper member 13 together, and ensure the integrity of the foundation;

[0054] S4. Install the steel columns 6 on the prefabricated upper components 13.

[0055] The present invention connects multiple prefabricated components through long / short bolt prestressed anchors, which has the advantages of high connection strength, good stability and detachable construction. At the same time, each prefabricated component is stabilized by a positioning groove to reduce the risk of slippage in the construction, thereby obtaining a coke oven greenhouse prefabricated concrete foundation with high practical value, and solving the problems of long construction period, long maintenance period, inability to rotate components, environmental pollution and high cost in the current coke oven greenhouse cast-in-place reinforced concrete foundation construction method. Anchors are pre-set in the construction method, and prestress is applied under appropriate conditions, which not only meets the requirements of connection strength, but also makes construction more convenient and saves construction time. When the coke oven greenhouse is dismantled after the coke oven project construction is completed, the prefabricated concrete foundation can also be dismantled and taken away and used for the next coke oven construction project to avoid material waste.

[0056] In summary, the present invention provides a coke oven greenhouse assembled concrete foundation and a construction method thereof, so as to solve a series of problems existing in the prior art, such as long construction period, long maintenance period, inability to rotate components, environmental pollution and high construction cost. The assembled concrete foundation comprises, from bottom to top, a prefabricated cushion layer, a prefabricated lower component and a prefabricated upper component: a first anchor hole is opened at the corresponding positions of the prefabricated cushion layer and the prefabricated lower component; a second anchor hole is opened at the corresponding positions of the prefabricated cushion layer, the prefabricated lower component and the prefabricated upper component; a short bolt prestressed anchor passes through the first anchor hole to connect the prefabricated cushion layer and the prefabricated lower component; a long bolt prestressed anchor passes through the second anchor hole to connect the prefabricated cushion layer and the prefabricated upper component; a first positioning groove is opened on the upper surface of the prefabricated cushion layer; the prefabricated lower component is arranged on the first positioning groove; a second positioning groove is opened on the upper surface of the prefabricated lower component; and the prefabricated upper component is arranged on the second positioning groove.

[0057] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A coke oven greenhouse assembled concrete foundation, characterized in that: From bottom to top, it includes a prefabricated cushion layer (11), a prefabricated lower component (12), and a prefabricated upper component (13): First anchor holes (31) are opened at corresponding positions of the prefabricated cushion layer (11) and the prefabricated lower component (12); second anchor holes (32) are opened at corresponding positions of the prefabricated cushion layer (11), the prefabricated lower component (12) and the prefabricated upper component (13); a short bolt prestressed anchor (22) passes through the first anchor hole (31) to connect the prefabricated cushion layer (11) and the prefabricated lower component (12); a long bolt prestressed anchor (21) passes through the second anchor hole (32) to connect the prefabricated cushion layer (11) and the prefabricated upper component (13); curved hooks (4) are evenly arranged on the outer edges of the prefabricated cushion layer (11), the prefabricated lower component (12) and the prefabricated upper component (13); The upper surface of the prefabricated cushion layer (11) is provided with a first positioning groove (51); the prefabricated lower component (12) is arranged on the first positioning groove (51); the upper surface of the prefabricated lower component (12) is provided with a second positioning groove (52); and the prefabricated upper component (13) is arranged on the second positioning groove (52).

2. The assembled concrete foundation of a coke oven greenhouse according to claim 1, characterized in that: The prefabricated cushion layer (11), the prefabricated lower component (12) and the prefabricated upper component (13) are all rectangular parallelepipeds, and their lengths and widths decrease in sequence, while their heights increase in sequence.

3. A coke oven greenhouse assembled concrete foundation according to claim 1 or 2, characterized in that: The arrangement line of the first anchor bolt holes (31) is equidistant from the edge line of the prefabricated lower component (12); and the arrangement line of the second anchor bolt holes (32) is equidistant from the edge line of the prefabricated upper component (13).

4. The assembled concrete foundation of a coke oven greenhouse according to claim 3 is characterized in that: The distance between the center of the first anchor hole (31) and the edge of the prefabricated lower component (12) is 200 mm; the distance between the center of the second anchor hole (32) and the edge of the prefabricated upper component (13) is 150 mm.

5. The assembled concrete foundation of a coke oven greenhouse according to claim 4 is characterized in that: The spacing of the first anchor holes (31) along the long sides of the prefabricated cushion layer (11) and the prefabricated lower component (12) is 1300 mm, and the spacing of the short sides is 1600 mm; the spacing of the second anchor holes (32) along the long sides of the prefabricated cushion layer (11), the prefabricated lower component (12), and the prefabricated upper component (13) is 850 mm, and the spacing of the short sides is 950 mm.

6. The assembled concrete foundation of a coke oven greenhouse according to claim 4, characterized in that: When the length of the long side of the prefabricated lower component (12) is less than 2000 mm and the length of the short side is less than 1700 mm, four anchor holes are set at the four corners where the distance between the center of the first anchor hole (31) and the edge line of the prefabricated lower component (12) is 200 mm; when the length of the long side of the prefabricated upper component (13) is less than 1100 mm and the length of the short side is less than 1000 mm, four anchor holes are set at the four corners where the distance between the center of the second anchor hole (32) and the edge line of the prefabricated upper component (13) is 150 mm.

7. The assembled concrete foundation of a coke oven greenhouse according to claim 1, characterized in that: The depth of the first positioning groove (51) is not greater than 1 / 3 of the height of the prefabricated cushion layer (11); and the depth of the second positioning groove (52) is not greater than 1 / 20 of the height of the prefabricated lower component (12).

8. A construction method for a coke oven greenhouse assembled concrete foundation, characterized in that: The construction of the assembled concrete foundation of the coke oven greenhouse as claimed in any one of claims 1 to 7 comprises the following steps: S1, passing the short bolt prestressed anchor (22) through the first anchor hole (31) of the prefabricated cushion layer (11), passing the long bolt prestressed anchor (21) through the second anchor hole (32) of the prefabricated cushion layer (11), and hoisting the prefabricated cushion layer (11) onto the foundation by means of a bent hook; S2, hoisting the prefabricated lower component (12) into the first positioning groove (51) of the prefabricated cushion layer (11) through the bent hook of the prefabricated lower component, adjusting so that the first anchor hole (31) is aligned, passing the short bolt prestressed anchor (22) that originally passes through the prefabricated cushion layer through the first anchor hole (31), and passing the long bolt prestressed anchor (21) through the second anchor hole (32), and applying prestress to the short bolt prestressed anchor (22), thereby fastening the prefabricated cushion layer (11) and the prefabricated lower component (12) together; S3, hoisting the prefabricated upper component (13) into the second positioning groove (52) reserved on the upper surface of the prefabricated lower component (12), adjusting so that the second anchor holes (32) are aligned, passing the long bolt prestressed anchor (21) that originally passed through the prefabricated cushion layer (11) and the prefabricated lower component (12) through the second anchor hole (32) of the prefabricated upper component (13) and applying prestress, and fastening the prefabricated cushion layer (11), the prefabricated lower component (12), and the prefabricated upper component (13) together; S4. Installing the steel columns (6) on the prefabricated upper components (13).

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