Building pressurizing structure and construction method

Abstract

The building pressurization structure comprises a pressurization structure body which is arranged outside a building to be pressurized and wraps the whole building to be pressurized in a sealed mode, and a foundation of the pressurization structure body and a foundation of the building to be pressurized are connected through pouring of a hardened ground. The hardened ground and the pressurization structure body foundation as well as the hardened ground and the to-be-pressurized building foundation are in sealed connection through a third sealing structure, a similar sealing cover structure is formed and arranged outside the to-be-pressurized building, and pressurization of the area where the whole to-be-pressurized building is located is achieved in cooperation with an equipment room arranged on the outer side of the pressurization structure body; after the building to be pressurized is pressurized and transformed through the structure, use of internal facilities of the building to be pressurized is not affected, later maintenance and overhaul are facilitated, and compared with an existing mode of pressurizing and transforming each single room, the construction difficulty is lowered, and the construction cost is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of high-altitude area pressure-boosting oxygen-supply buildings, in particular to a building pressure-boosting structure and a construction method. BACKGROUND

[0002] To solve the problem of altitude reaction of people working, living and traveling in high-altitude areas, the common method at present is to use an oxygen cabin or a pressure-boosting building to create a comfortable environment that can simulate low altitudes by increasing the air pressure (0-50 kPa) in a sealed space, thereby relieving or even eliminating the symptoms of human body's maladaptation to high-altitude environment.

[0003] However, the technology of directly boosting the pressure of buildings is currently less applied, and the stock buildings or newly built buildings in high-altitude areas are still generally conventional buildings with a reinforced concrete structure or a steel structure. Therefore, the pressure-boosting reconstruction for conventional buildings can not only transform the interior of the normal-pressure building into an equivalent low-altitude atmospheric environment, but also make full use of existing conventional buildings and reduce resource waste.

[0004] At present, the pressure-boosting reconstruction for conventional buildings is usually a local reconstruction in a certain space inside the conventional building, such as the invention patent with the patent name of "an embedded pressure-boosting building construction method and an embedded pressure-boosting building" and the publication number of CN119288204A, which discloses that after removing all decorative layers inside the original building, a sealed space is built in each space using a frame and a sealed pressure-bearing structure to realize pressure-boosting reconstruction. However, this method has certain defects:

[0005] 1. High cost, removing decorative layers will cause resource waste and take time and effort;

[0006] 2. Complex structure, a sealed space needs to be built in each room and each corridor inside, and they need to be connected and sealed, which requires high construction requirements and great difficulty;

[0007] 3. Limitation, the internal built sealed space has a large stress, and to meet the stress and cost requirements, its structure is often heavy, which will exceed the floor load of the existing conventional building, and thus the pressure-boosting reconstruction cannot be performed.

[0008] Therefore, how to perform low-cost pressure-boosting reconstruction for most existing conventional buildings and widely solve the problem of altitude reaction of residents in high-altitude areas is a technical problem to be solved at present. SUMMARY

[0009] The first object of the present application is to provide a building pressure-boosting structure, which does not affect the use of internal facilities of the building to be boosted after the pressure-boosting reconstruction of the building to be boosted by the structure, and facilitates the maintenance and repair of the staff; and the second object is to provide a construction method of the building pressure-boosting structure, thereby improving the construction efficiency of the building pressure-boosting structure.

[0010] To achieve the first object, the application provides a building pressurization structure, which comprises a pressurization structure body arranged outside a building to be pressurized and sealingly wrapping the building to be pressurized as a whole, a base of the pressurization structure body is connected with a base of the building to be pressurized through a hardened ground, and the hardened ground is sealingly connected with the base of the pressurization structure body and the base of the building to be pressurized through a third sealing structure.

[0011] In the embodiment, the pressurization structure body comprises a reinforced concrete base, a support frame, a pressure-bearing enclosure wall panel and a waterproof roof, the reinforced concrete base is provided with a plurality of anti-pulling structures as anchor piles at the bottom, the support frame is installed on the reinforced concrete base, the support frame is sealingly connected with the reinforced concrete base through a first sealing structure, the support frame encloses the top surface and four side surfaces of the building to be pressurized, the pressure-bearing enclosure wall panel is installed on the support frame, the support frame is sealingly connected with the pressure-bearing enclosure wall panel through a second sealing structure, and the waterproof roof is installed on the top surface of the support frame; the hardened ground is sealingly connected with the base of the pressurization structure body and the base of the building to be pressurized through the third sealing structure.

[0012] In the embodiment, the anti-pulling structure is an anti-pulling pile or an anti-pulling anchor rod or a raft foundation.

[0013] In the embodiment, the support frame comprises frame columns and frame beams, the frame columns are fixed on the reinforced concrete base, a plurality of frame columns and a plurality of frame beams are connected with each other to enclose a plurality of installation frames matched in size with the pressure-bearing enclosure wall panel, the four peripheries of adjacent pressure-bearing enclosure wall panels are fixed on the installation frames, gaps are arranged between the adjacent pressure-bearing enclosure wall panels to form joints, and the second sealing structure is installed in the joints.

[0014] In the embodiment, the frame columns and the frame beams are steel members with an H-shaped / box-shaped cross section or are trusses.

[0015] In the embodiment, the second sealing structure comprises a first sealing rubber strip and a T-shaped sealing strip, one end of the T-shaped sealing strip is sealingly inserted into the joint as an insertion end, the other end of the T-shaped sealing strip extends out of the joint as an exposed end, the first sealing rubber strip is attached to the outside of the exposed end of the T-shaped sealing strip, the width of the first sealing rubber strip is greater than the width of the exposed end of the T-shaped sealing strip, and the two sides of the first sealing rubber strip are attached to the pressure-bearing enclosure wall panel, so that the first sealing rubber strip seals the joint between the T-shaped sealing strip and the installation frame.

[0016] In the embodiment, the two sides of the insertion end of the T-shaped sealing strip in contact with the end surface of the pressure-bearing enclosure wall panel are provided with barbs for preventing pulling, and the outer surface of the exposed end of the T-shaped sealing strip is arc-shaped.

[0017] In the embodiment, the first sealing structure comprises a right-angle sealing strip and a second sealing strip, the top surface of the reinforced concrete foundation is embedded with an angle steel embedded part, the right-angle sealing strip is inserted and sealed in the connecting joint between the bottom of the support frame and the angle steel embedded part on the top surface of the reinforced concrete foundation, and the second sealing strip is attached to the outside of the right-angle sealing strip.

[0018] In the embodiment, the third sealing structure adopts a flexible coating sealing layer, the joint between the hardened ground and the foundation connecting node of the pressure boosting structure body and the joint between the hardened ground and the foundation connecting node of the building to be boosted are coated with a flexible waterproof sealing material to form a flexible coating sealing layer, and the flexible coating sealing layer seals the joints between the hardened ground and the foundation of the pressure boosting structure body and between the hardened ground and the foundation of the building to be boosted.

[0019] In the embodiment, an equipment room is also arranged on the ground outside the pressure boosting structure body, the air pressure boosting system and the control system are installed in the equipment room, and the equipment room is connected with the pressure boosting structure body through pipelines and cables, and is used for controlling the air pressure value in the pressure boosted building.

[0020] To achieve the second object, the application provides a construction method of the building pressure boosting structure, which specifically comprises the following steps.

[0021] S1, obstacles are removed outwardly with the building to be boosted as the center, and the cleaning area has a radius of not less than 2 meters;

[0022] S2, an anti-pulling structure is arranged on the ground at a distance of 0.5-1.5 meters from the outer wall of the building to be boosted as an anchor pile, a reinforced concrete foundation is poured and connected with the anti-pulling structure at the position of the anti-pulling structure, the reinforced concrete foundation surrounds the building to be boosted, the ground between the building to be boosted and the reinforced concrete foundation is excavated, and a hardened concrete ground is poured to connect the foundation of the pressure boosting structure body with the foundation of the building to be boosted, and an equipment room is constructed outside the reinforced concrete foundation;

[0023] S3, a support frame is installed on the reinforced concrete foundation, the support frame surrounds and encloses the four side surfaces and the top surface of the building to be boosted, the frame column of the support frame is connected with the anti-pulling structure through a nut, and then the frame beam is horizontally installed on the frame column, and the frame column and the frame beam are connected to form a plurality of installation frames matched with the size of the pressure bearing enclosure wall plate;

[0024] S4, the pressure bearing enclosure wall plate is installed on the installation frame of the support frame in blocks, and the pressure bearing enclosure wall plate can be arranged on the inside or outside of the support frame;

[0025] S5 corresponds to the construction of the first sealing structure, the second sealing structure, and the third sealing structure;

[0026] S6. The air pressure boosting system and control system installed inside the equipment room are connected to the boosting structure body through pipelines and cables;

[0027] S7. Pressurize the pressurized building to the design air pressure value through the air pressure boosting system and control system. After detecting the leak point, seal the leak point until the overall leakage rate meets the design requirements.

[0028] S8. Install waterproof roofing and complete the pressurization modification of the building to be pressurized.

[0029] Due to the above structure, the present invention has the following advantages:

[0030] 1. This device forms a sealed cover structure outside the building to be pressurized. Together with the equipment room set up on the outside of the pressurization structure, it can pressurize the entire area where the building to be pressurized is located. After the building to be pressurized is modified by the above structure, it will not affect the use of the internal facilities of the building to be pressurized, and it will be convenient for staff to maintain and repair. Compared with the existing pressurization method for each individual room, it reduces the construction difficulty and saves construction costs.

[0031] 2. The main body of the pressurization structure of this device is connected to multiple pull-out structures through a reinforced concrete foundation, which serves as anchor piles, enhancing the stability of the overall structure and enabling it to withstand the pressure brought by pressurization.

[0032] 3. This device employs multiple sealing structures. The first, second, and third sealing structures respectively seal the spaces between the supporting frame and the reinforced concrete foundation, the pressure-bearing retaining wall panel, and the hardened ground and the foundation, effectively preventing gas leakage. Both the first and second sealing structures utilize a double-seal design for enhanced sealing performance.

[0033] 4. Frame columns and frame beams can be made of steel components or trusses with H-shaped / box-shaped cross sections. The pressure-bearing enclosure wall panels can be made of steel plate wall panels, aluminum alloy wall panels or aluminum honeycomb wall panels, which can be selected according to actual needs and costs.

[0034] 4. The construction method and steps of this building pressurization structure are clear. The operation is centered on the building to be pressurized. The construction process does not affect the use of its internal facilities, which is convenient for staff to carry out maintenance and repair during the construction process. Attached Figure Description

[0035] Fig. 1 This is a schematic diagram of the structure of the present invention.

[0036] Fig. 2 This is a schematic diagram of the second sealing structure of the present invention.

[0037] Fig. 3 This is a schematic diagram of the first sealing structure and the third sealing structure of the present invention.

[0038] In the attached diagram: 1. Pressure-boosting structure body; 11. Frame column; 12. Frame beam; 13. Pressure-bearing enclosure wall panel; 14. Waterproof roof; 15. Reinforced concrete foundation; 2. Building to be pressurized; 3. Hardened ground; 4. Anti-uplift pile; 5. Equipment room; 6. Second sealing structure; 61. T-shaped sealing strip; 62. First sealing strip; 7. First sealing structure; 71. Right-angle sealing strip; 72. Second sealing strip; 73. Angle steel embedded part; 8. Third sealing structure. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0040] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0041] like Figs. 1 to 3 As shown, a building pressurization structure includes a pressurization structure body 1 installed outside the building to be pressurized 2 and sealingly enclosing the building to be pressurized. The foundation of the pressurization structure body 1 is connected to the foundation of the building to be pressurized 2 by pouring a hardened ground 3. The hardened ground 3 is sealed to the foundation of the pressurization structure body 1 and to the foundation of the building to be pressurized 2 by a third sealing structure 8.

[0042] like Fig. 1As shown, the pressurization structure 1 includes a reinforced concrete foundation 15, a support frame, a pressure-bearing retaining wall panel 13, and a waterproof roof 14. Multiple pull-out structures are installed at the bottom of the reinforced concrete foundation 15 as anchor piles. In this embodiment, the pull-out structures are pull-out piles 4, pull-out anchors, or raft foundations. The support frame is installed on the reinforced concrete foundation 15, and the support frame and the reinforced concrete foundation 15 are sealed together by a first sealing structure 7. The support frame encloses the top surface and four sides of the building 2 to be pressurized. The pressure-bearing retaining wall panel 13 is installed on the support frame, and the support frame and the pressure-bearing retaining wall panel 13 are sealed together by a second sealing structure 6. The top surface of the support frame is equipped with a waterproof roof 14. The hardened ground 3 is sealed together with the foundation of the pressurization structure 1 and the foundation of the building 2 to be pressurized by a third sealing structure 8.

[0043] Specifically, the supporting frame includes frame columns 11 and frame beams 12. The frame columns 11 are fixed on the reinforced concrete foundation 15. Multiple frame columns 11 and multiple frame beams 12 are connected to each other to form multiple installation frames that match the size of the pressure-bearing retaining wall panels 13. The perimeter of adjacent pressure-bearing retaining wall panels 13 is fixed to the installation frames. There are gaps between adjacent pressure-bearing retaining wall panels 13 to form joints. A second sealing structure 6 is installed in the joints. Furthermore, the frame columns 11 and frame beams 12 are steel components with H-shaped / box-shaped cross sections or trusses. The pressure-bearing retaining wall panels are steel plate retaining walls, aluminum alloy retaining walls, or aluminum honeycomb retaining walls.

[0044] like Fig. 2As shown, the second sealing structure 6 includes a first sealing strip 62 and a T-shaped sealing strip 61. The T-shaped sealing strip 61 is inserted into the joint, and the first sealing strip 62 is pasted on the joint and the outside of the T-shaped sealing strip 61. The first sealing strip 62 completely covers the T-shaped sealing strip 61 and seals the joint between the T-shaped sealing strip 61 and the mounting frame. Furthermore, the T-shaped sealing strip 61 has anti-pull-out barbs on both sides that are inserted into the joint and contact the end face of the pressure-bearing enclosure wall panel 13. The exposed outer surface of the T-shaped sealing strip 61 is arc-shaped. The second sealing structure 6 is a double sealing structure of "T-shaped sealing strip 61 + sealing strip". First, the T-shaped sealing strip 61 is inserted into the joint to form the first seal. The barb structure of the T-shaped sealing strip 61 in the gap can adapt to an error of 0~10mm. The T-shaped sealing strip 61 has an arc-shaped outer surface. When indoor air pressure acts on the arc-shaped surface of the T-shaped sealing strip 61, it will make the T-shaped sealing strip 61 fit more tightly against the pressure-bearing wall panel 13, resulting in a better sealing effect. A second seal is formed by pasting a first sealing strip 62 onto the arc-shaped surface of the T-shaped sealing strip 61. The width of the first sealing strip 62 is greater than the width of the arc-shaped outer surface of the T-shaped sealing strip 61, so that both sides of the first sealing strip 62 are bonded to the outer surface of the pressure-bearing wall panel 13, forming an effective seal. The arc-shaped surface of the T-shaped sealing strip 61 also makes its fit with the first sealing strip 62 tighter and seamless. With the above sealing method, when air leakage is found, it is only necessary to remove and replace the sealing strip and T-shaped sealing strip 61 indoors, without disassembling the pressure-bearing wall panel 13, which greatly reduces the inspection and maintenance costs.

[0045] like Fig. 3 As shown, the first sealing structure 7 includes a right-angle sealing strip 71 and a second sealing strip 72. An angle steel embedded part 73 is pre-embedded on the top surface of the reinforced concrete foundation 15. The right-angle sealing strip 71 is inserted into the connection joint between the bottom of the support frame and the angle steel embedded part 73 on the top surface of the reinforced concrete foundation 15. The second sealing strip 72 is pasted on the outside of the T-shaped sealing strip 61 at the location of the connection joint. The second sealing strip 72 completely covers the right-angle sealing strip 71 and seals the joint between the right-angle sealing strip 71 and the bottom of the support frame, as well as the joint between the right-angle sealing strip 71 and the reinforced concrete foundation 15. The third sealing structure 8 adopts a flexible coating sealing layer. Flexible waterproof sealing material is applied to the joints of the hardened ground 3 and the foundation of the pressurized structure body 1, as well as the joints of the hardened ground 3 and the foundation of the building to be pressurized 2, to form a flexible coating sealing layer. The flexible coating sealing layer seals the joints between the hardened ground 3 and the foundation of the pressurized structure body 1, and between the hardened ground 3 and the foundation of the building to be pressurized 2.

[0046] Furthermore, an equipment room 5 is also provided on the ground outside the main body 1 of the pressurization structure. The equipment room 5 is used to house the air pressure boosting system and control system. The equipment room 5 is connected to the main body 1 of the pressurization structure through pipelines and cables. The equipment room 5 is used to control the air pressure value inside the pressurization building.

[0047] This invention also includes a construction method for a building pressurization structure, specifically comprising the following steps:

[0048] S1. Taking the building to be pressurized 2 as the center, clear obstacles outwards, and the radius of the cleared area shall not be less than 2 meters.

[0049] S2. Install pull-out resistance structures as anchor piles on the ground at a distance of 0.5 to 1.5 meters from the outer wall of the building to be pressurized 2. Pour reinforced concrete foundation 15 to connect with the pull-out resistance structures and enclose the four sides of the building to be pressurized 2 with the poured reinforced concrete foundation 15. Excavate the ground between the building to be pressurized 2 and the reinforced concrete foundation 15 and pour concrete hardened ground 3 to connect the foundation of the pressurization structure body 1 with the foundation of the building to be pressurized 2. Construct equipment room 5 outside the poured reinforced concrete foundation 15.

[0050] S3. Install a support frame on the reinforced concrete foundation 15. The support frame will enclose the four sides and the top of the building to be pressurized 2. First, connect the frame column 11 of the support frame to the pull-out structure with nuts. Then, install the frame beam 12 horizontally on the frame column 11. After the frame column 11 and the frame beam 12 are connected, they will enclose and form multiple installation frames that match the size of the pressure-bearing enclosure wall panel 13.

[0051] S4. Use bolts to install the pressure-bearing wall panels 13 one by one onto the mounting frame of the support frame; the pressure-bearing wall panels 13 can be installed on the inside or outside of the support frame, in this embodiment, it is preferred to install them on the inside.

[0052] S5. Lay the first sealing structure 7, the second sealing structure 6 and the third sealing structure 8;

[0053] S6. The air pressure boosting system and control system installed inside the equipment room 5 are connected to the boosting structure body 1 through pipelines and cables;

[0054] S7. Pressurize the pressurized building to the design air pressure value through the air pressure boosting system and control system. After detecting the leak point, seal the leak point until the overall leakage rate meets the design requirements.

[0055] S8. Install waterproof roof 14 to complete the pressurization modification of building 2 to be pressurized.

[0056] After the conventional pressurization modification of Building 2 is carried out using the above method, the use of the internal facilities of Building 2 will not be affected, and it will be convenient for staff to maintain and repair.

[0057] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A building plenum structure, characterized by: The pressure boosting structure body is connected with the foundation of the building to be boosted by pouring hardening ground, and the hardening ground is sealed and connected with the foundation of the building to be boosted and the foundation of the pressure boosting structure body by the third sealing structure.

2. The architectural pressure-equalizing structure according to claim 1, characterized in that: The pressure boosting structure body comprises a reinforced concrete foundation, a support frame, a pressure bearing enclosure wall plate and a waterproof roof, the reinforced concrete foundation is provided with a plurality of anti-uplift structures as anchor piles at the bottom, the support frame is installed on the reinforced concrete foundation, the support frame and the reinforced concrete foundation are sealed and connected by the first sealing structure, the support frame encloses the top surface and four side surfaces of the building to be boosted, the pressure bearing enclosure wall plate is installed on the support frame, the support frame and the pressure bearing enclosure wall plate are sealed and connected by the second sealing structure, and the waterproof roof is installed on the top surface of the support frame; the hardening ground is sealed and connected with the foundation of the building to be boosted and the foundation of the pressure boosting structure body by the third sealing structure.

3. The architectural pressure boosting structure according to claim 2, characterized in that: The anti-uplift structure is an anti-uplift pile or an anti-uplift anchor rod or a raft foundation.

4. The architectural pressure-equalizing structure according to claim 2, characterized by: The support frame comprises frame columns and frame beams, the frame columns are fixed on the reinforced concrete foundation, a plurality of frame columns and a plurality of frame beams are connected and enclosed to form a plurality of installation frames matched with the pressure bearing enclosure wall plate, the four peripheries of adjacent pressure bearing enclosure wall plates are fixed on the installation frame, a gap is arranged between the adjacent pressure bearing enclosure wall plates to form a joint, and the second sealing structure is installed in the joint.

5. The architectural pressure boosting structure according to claim 4, characterized in that: The frame columns and the frame beams are steel members with an H-shaped cross section or box-shaped steel members or trusses.

6. The architectural pressure-equalizing structure according to claim 4, characterized in that: The second sealing structure comprises a first sealing strip and a T-shaped sealing strip, one end of the T-shaped sealing strip is sealed and inserted into the joint as an insertion end, the other end of the T-shaped sealing strip extends out of the joint as an exposed end, the first sealing strip is attached to the outside of the exposed end of the T-shaped sealing strip, the width of the first sealing strip is greater than the width of the exposed end of the T-shaped sealing strip, and the two sides of the first sealing strip are attached to the pressure bearing enclosure wall plate, so that the first sealing strip seals the joint between the T-shaped sealing strip and the installation frame.

7. The architectural pressure boosting structure according to claim 6, characterized in that: The two sides of the insertion end of the T-shaped sealing strip, which are in contact with the end surface of the pressure bearing enclosure wall plate, are provided with barbs for preventing uplift, and the outer surface of the exposed end of the T-shaped sealing strip is arc-shaped.

8. The architectural pressure-equalizing structure according to claim 2, characterized by: The first sealing structure comprises a right-angle sealing strip and a second sealing strip, an angle steel embedded part is embedded in the top surface of the reinforced concrete foundation, the right-angle sealing strip is sealed and inserted into the connecting joint between the bottom of the support frame and the angle steel embedded part of the top surface of the reinforced concrete foundation, the second sealing strip is attached to the outside of the right-angle sealing strip, the width of the second sealing strip is greater than the width of the right-angle sealing strip, and the two sides of the second sealing strip are respectively attached to the support frame and the angle steel embedded part, so that the second sealing strip seals the joint between the right-angle sealing strip and the bottom of the support frame and the joint between the right-angle sealing strip and the reinforced concrete foundation.

9. The architectural pressure-equalizing structure according to claim 2, characterized by: The third sealing structure adopts a flexible coating sealing layer, and the joint between the hardening ground and the foundation of the pressure boosting structure body and the joint between the hardening ground and the foundation of the building to be boosted are coated with a flexible waterproof sealing material to form a flexible coating sealing layer, so that the flexible coating sealing layer seals the joint between the hardening ground and the foundation of the pressure boosting structure body and the joint between the hardening ground and the foundation of the building to be boosted.

10. The architectural pressure-equalizing structure of claim 1, wherein: The ground outside the pressurization structure body is also provided with an equipment room, the equipment room is provided with an air pressure pressurization system and a control system, the equipment room is connected with the pressurization structure body through pipelines and cables, and the equipment room is used for controlling the air pressure value in the pressurization building.

11. A construction method of the building pressurization structure according to claim 10, characterized in that: Specifically comprising the following steps: S1, cleaning obstacles outward with the building to be pressurized as the center, and the cleaning area has a radius of not less than 2 m; S2, arranging an anti-pulling structure as an anchor pile on the ground 0.5-1.5 m away from the outer wall of the building to be pressurized, pouring a reinforced concrete foundation connected with the anti-pulling structure at the position of the anti-pulling structure, surrounding the building to be pressurized with the four sides, excavating the ground between the building to be pressurized and the reinforced concrete foundation, and pouring a hardened concrete ground to connect the foundation of the pressurization structure body with the foundation of the building to be pressurized; and constructing an equipment room outside the reinforced concrete foundation; S3, installing a support frame on the reinforced concrete foundation, the support frame surrounds and encloses the four sides and the top of the building to be pressurized; first, connecting the frame column of the support frame with the anti-pulling structure through a nut, and then horizontally installing the frame beam on the frame column, and after the frame column and the frame beam are connected, a plurality of installation frames matched with the size of the pressure-bearing enclosure wall plate are formed; S4, installing the pressure-bearing enclosure wall plate on the installation frame of the support frame in blocks; the pressure-bearing enclosure wall plate can be inside or outside the support frame; S5, corresponding to the first, second and third sealing structures; S6, installing the air pressure pressurization system and the control system in the equipment room, and connecting the air pressure pressurization system and the control system with the pressurization structure body through pipelines and cables; S7, pressurizing the building to the design air pressure value through the air pressure pressurization system and the control system, sealing the leakage point after detecting the leakage point, and until the overall leakage rate meets the design requirement; S8, installing a waterproof roof, and completing the pressurization reconstruction of the building to be pressurized.

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