Assembly type structural system of giant stepped internal thermal insulation modular plenum chamber

Abstract

The invention discloses a giant stepped internal thermal insulation modular plenum chamber fabricated structure system, and relates to the technical field of plenum chamber construction. The system comprises a supporting system, a modular plenum chamber assembling system, a sealing system and a heat insulation system which are arranged in a space below a step, and the supporting system is mainly composed of a channel steel frame, a channel steel main beam and a hanging rod; the modular plenum chamber assembly system mainly comprises modular plenum chamber unit structures mounted between the adjacent channel steel girders and between the channel steel girders and the channel steel frames. The system is scientific in design, reasonable in structure, small in size, light in weight, capable of achieving modular assembly type construction and good in using effect, the technical problems that a huge static pressure box of a concrete structure is large in size, large in structural load and incapable of achieving assembly type construction are solved, and construction and implementation of a modular assembly type box body of the huge stepped internal heat preservation static pressure box are facilitated.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of building construction, in particular to the technical field of static pressure box construction, and specifically relates to a giant ladder type internal thermal insulation modular static pressure box assembly type structure system. BACKGROUND

[0002] With the strong national economy and the increasing comprehensive national strength, modern sports venues and theaters are constantly emerging, and the requirements for air conditioning are becoming higher and higher. The fixed seat three-dimensional distribution type air supply system of the stadium, theater and other places is generally applied to the stepped seating area and is part of the three-dimensional air conditioning of the stadium, theater and other places. It is different from the traditional air supply system in that the air outlet of the traditional air supply system is connected with the air pipe system, and the fixed seat three-dimensional distribution type air supply system of the stadium, theater and other places is connected with the machine room through the air pipe and connected with the numerous seat air outlets of the giant ladder type static pressure box under the stepped seating area to form an air supply system.

[0003] Because the fixed seat three-dimensional distribution type air supply system of the stadium, theater and other places needs a huge static pressure box for support, there is no reference case in the prior art. If a concrete structure giant static pressure box is used, the formwork is difficult to disassemble, the static pressure box is large in size and large in structural load, and cannot be constructed in an assembly type. This brings certain technical problems to the application of the fixed seat three-dimensional distribution type air supply system of the stadium, theater and other places. SUMMARY

[0004] The purpose of the present application is to solve the problem of difficult construction caused by the large size and large structural load of the concrete structure giant static pressure box under the fixed seat of the stadium, theater and other places, which cannot be constructed in an assembly type. Therefore, a giant ladder type internal thermal insulation static pressure box modular assembly type system is provided.

[0005] The present application is realized by the following technical solutions: A giant ladder type internal thermal insulation modular static pressure box assembly type structure system comprises a supporting system, a modular static pressure box assembly system, a sealing system and an insulation system arranged in the space below the ladder.

[0006] The supporting system comprises a channel steel frame arranged along the four side walls of the space below the ladder, the channel steel frame is inclined downward along the slope direction of the ladder, the outer frame of the channel steel frame is attached to the wall and connected to the wall by a steel plate round steel counter-pull rivet, a plurality of channel steel main beams are arranged in the channel steel frame, the channel steel main beams are inclined downward along the slope direction of the ladder, the upper and lower ends of the channel steel main beams are respectively connected and fixed with the corresponding side channel steel frame, and a row of hangers is connected between the channel steel main beams and the top plate of the ladder, the row of hangers comprises a plurality of hangers arranged at intervals.

[0007] Modular static pressure tank assembly system: the modular static pressure tank assembly system is divided by the main beam of channel steel and the side frame of channel steel on both sides of the main beam of channel steel in parallel direction, and is designed by standardized modules; the modular static pressure tank assembly system comprises a plurality of modular static pressure tank unit structures, the modular static pressure tank unit structures are installed between adjacent main beams of channel steel and between the outermost main beam of channel steel and the side frame of channel steel; the modular static pressure tank unit structure comprises an angle steel frame, a galvanized steel plate is installed on the inner part of the angle steel frame, the plate edge of the galvanized steel plate abuts on the bottom plate of the angle steel frame, and the plate edge of the galvanized steel plate and the bottom plate of the angle steel frame are connected by rivet riveting; for the modular static pressure tank unit structure installed between adjacent main beams of channel steel, the frame edges of the angle steel frames on both sides in parallel direction with the main beam of channel steel abut on the two adjacent main beams of channel steel respectively, and the frame edges of the angle steel frames on both sides in vertical direction with the main beam of channel steel abut on the side frame of channel steel on the corresponding side respectively; for the modular static pressure tank unit structure installed between the outermost main beam of channel steel and the side frame of channel steel, the inner side frame edge of the angle steel frame in parallel direction with the main beam of channel steel abuts on the outermost main beam of channel steel, and the remaining three side frame edges of the angle steel frame abut on the side frame of channel steel on the corresponding side respectively; the abutting positions of every two adjacent modular static pressure tank unit structures jointly abut on the same main beam of channel steel, the bottom plates of the angle steel frames of the two symmetrically abut on the top of the main beam of channel steel, the vertical plates of the angle steel frames of the two are fastened and connected by the tension bolts, and a row of hangers connected on the main beam of channel steel are clamped between the vertical plates of the angle steel frames of the two; the modular static pressure tank unit structure abutting on the side frame of channel steel, the bottom plate of the angle steel frame thereof abuts on the top of the side frame of channel steel, the vertical plate of the angle steel frame thereof abuts on the wall, and the outer side of the angle steel frame thereof is riveted with a galvanized steel plate strip, and the galvanized steel plate strip is riveted on the wall by flat steel and expansion bolts after the edge of the galvanized steel plate strip is turned back.

[0008] Sealing system: in the modular static pressure tank unit structure, a sealing gasket is arranged between the plate edge of the galvanized steel plate and the bottom plate of the angle steel frame, and sealant is applied to the inner and outer joints of the sealing gasket; at the abutting position of the modular static pressure tank unit structure and the main beam of channel steel, a sealing gasket is arranged between the bottom plate of the angle steel frame and the top of the main beam of channel steel, and sealant is applied to the inner and outer joints of the sealing gasket; at the abutting position of the modular static pressure tank unit structure and the side frame of channel steel, a sealing gasket is arranged between the bottom plate of the angle steel frame and the top of the side frame of channel steel, and sealant is applied to the inner and outer joints of the sealing gasket, and a sealing gasket is arranged between the turned-back edge of the galvanized steel plate strip and the wall, and sealant is applied to the outer joint of the sealing gasket.

[0009] Thermal insulation system: Precast polyurethane insulation boards are fixed to the modular static pressure box unit structure. The precast polyurethane insulation boards are bonded and fixed within the space enclosed by the angle steel frame and galvanized steel plate. Then, the joints are filled and leveled with foamed polyurethane. Finally, a layer of rubber and plastic insulation is applied to the leveled surface. The angle steel frames of adjacent modular static pressure box unit structures fixed to the top of the channel steel main beam are first sealed with sealant and then filled and leveled with foamed polyurethane. Finally, a layer of rubber and plastic insulation is applied to the leveled surface. A layer of rubber and plastic insulation is applied to the outer surface of the hanger rod. A layer of rubber and plastic insulation is applied to the edge of the galvanized steel strips on the modular static pressure box unit structure fixed to the wall.

[0010] Furthermore, angle steel sections are welded and fixed to both sides of the end of the channel steel main beam, and the two angle steel sections are fixedly connected to the inner frame edge of the channel steel frame by bolts.

[0011] Furthermore, in the thermal insulation system, the thickness of the rubber and plastic insulation layer is mm.

[0012] Furthermore, the bottom end of the hanger is connected through the channel steel main beam, and the top end of the hanger is connected to a channel steel section, the top end of which is connected to an expansion bolt, which is riveted to the top plate of the stepped structure.

[0013] Furthermore, the top of the channel steel section is provided with a Φ double semicircular strip hole with a distance of mm between them. After the expansion bolt passes through the strip hole, it is riveted to the stepped top plate.

[0014] Furthermore, it also includes a manhole structure, which is located in the center of a modular static pressure box unit structure. The manhole structure includes a manhole short pipe, and both the upper and lower ends of the manhole short pipe are provided with outwardly bent flanges. The upper flange of the manhole short pipe is fixedly connected to the galvanized steel plate of the modular static pressure box unit structure by upper end cap bolts, and the lower flange of the manhole short pipe is fixedly connected to the manhole cover plate by lower end cap bolts.

[0015] Furthermore, the structure for fastening the two nuts of the upper capped bolt, from top to bottom, consists of a galvanized steel plate strip, a sealing gasket, a galvanized steel plate of the modular static pressure box unit structure, a sealing gasket, an upper flange, and a galvanized steel plate strip; the structure for fastening the two nuts of the lower capped bolt, from top to bottom, consists of a galvanized steel plate strip, a lower flange, a sealing gasket, and a manhole cover.

[0016] Furthermore, a layer of rubber and plastic insulation is applied to the surface of the manhole short pipe.

[0017] The giant stepped internal insulation modular static pressure box prefabricated structure system described in this invention has a scientific design, reasonable structure, small size and light weight, can be constructed in a modular prefabricated manner, and has good performance. It solves the technical problems of large size, large structural load and inability to be constructed in prefabricated manner for giant static pressure boxes of concrete structures, and facilitates the construction and implementation of the modular prefabricated box body of the giant stepped internal insulation static pressure box. Attached Figure Description

[0018] The accompanying drawings, which are provided to further illustrate the invention and form part of this application, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention.

[0019] Figure 1 This is a plan view of the western section in Embodiment 1 of the present invention.

[0020] Figure 2 for Figure 1 AA-direction cross section view.

[0021] Figure 3 for Figure 2 A schematic diagram showing the connection between the channel steel main beam, channel steel frame, and wall at the top of the slope.

[0022] Figure 4 for Figure 2 A schematic diagram showing the connection between the channel steel main beam, channel steel frame, and wall at the bottom of the slope.

[0023] Figure 5 for Figure 2 A schematic diagram showing the connection between the central hanger, the channel steel main beam, and the steps.

[0024] Figure 6 This is a schematic diagram of the modular static pressure tank unit structure in the system of the present invention.

[0025] Figure 7 This is a schematic diagram of the structure of adjacent modular static pressure box units abutting against the main channel steel beam in the system of the present invention.

[0026] Figure 8 This is a schematic diagram of the manhole structure in the system of the present invention.

[0027] Figure 9 for Figure 8 Enlarged diagram of point C in the middle.

[0028] Figure 10 for Figure 8 Enlarged diagram of point D in the middle.

[0029] In the diagram: 1-Step, 2-Channel steel frame, 3-Channel steel main beam, 4-Angle steel frame, 5-Hanging rod, 6-Galvanized steel plate, 7-Tie bolt, 8-Wall, 9-Galvanized steel strip, 10-Flat steel, 11-Expansion bolt, 12-Sealing gasket, 13-Precast polyurethane insulation board, 14-Foamed polyurethane, 15-Rubber-plastic insulation layer, 16-Angle steel section, 17-Channel steel section, 18-Manhole short pipe, 19-Upper flange, 20-Upper cap bolt, 21-Lower flange, 22-Lower cap bolt, 23-Manhole cover, 24-Galvanized steel plate strip, 25-Steel plate round steel tie rod fastener, 26-Rivet. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the present invention will be further described clearly and completely below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0031] Sports stadiums and theaters are generally divided into eight major blocks: east, south, west, north, southeast corner, southwest corner, northeast corner, and northwest corner. The four blocks of east, south, west, and north are further divided into several smaller blocks that are symmetrical to each other according to their size. This embodiment takes a small block in the west area as an example to further illustrate the technical solution of the system of the present invention. Example 1

[0032] In this small western section, which has a stepped upper section and a restroom lower section, a giant stepped internal insulation modular static pressure box prefabricated structure system is being constructed.

[0033] like Figures 1 to 7 As shown, the system includes a support system, a modular static pressure box assembly system, a sealing system, and a thermal insulation system, all located in the space below step 1.

[0034] Support System: The support system includes channel steel frame 2 installed along the four side walls 8 of the space below step 1. The channel steel frame 2 has its groove facing downward and is inclined along the slope of step 1. The outer frame edge of the channel steel frame 2 is attached to the wall and riveted to the wall 8 by steel plate round steel tie rods 25. Multiple parallel channel steel main beams 3, which mainly bear the load, are installed at intervals inside the channel steel frame 2. The grooves of the channel steel main beams 3 face downward and are inclined along the slope of step 1. The upper and lower ends of the channel steel main beams 3 respectively abut and are fixed to the corresponding side of the channel steel frame 2. Specifically, angle steel sections 16 are welded and fixed to both ends of the channel steel main beams 3, and the two angle steel sections 16 are fixed to the inner frame edge of the channel steel frame 2 by bolts. The channel steel main beams 3 are connected to the top plate of step 1 by a row of hangers 5. The row of hangers 5 includes spacers. The multiple hanger rods 5 are configured as follows: the bottom end of the hanger rod 5 is fixedly connected to the channel steel main beam 3 through the channel steel main beam 3. After the bottom end of the hanger rod 5 passes through the channel steel main beam 3, a rivet plate is first installed on it, and then it is fixed and positioned by threaded connection nuts. The top end of the hanger rod 5 is connected to a channel steel section 17, and the top end of the channel steel section 17 is connected to an expansion bolt 11, which is riveted to the top plate of the step 1. The channel steel section 17 can be a 60mm wide No. 8 channel steel. When the No. 8 channel steel is connected to the hanger rod 5, a Φ12 round hole is drilled for the Φ10 hanger rod 5 to pass through. When the No. 8 channel steel is connected to the expansion bolt 11, a Φ12 double semi-circular strip hole with a distance of 28mm is drilled to facilitate the alignment of the hanger rod 5. Within a diameter range of 54mm, it is used to adjust and correct any deviation between the position of the expansion bolt 11 and the position of the hanger rod 5, so as to facilitate installation and improve work efficiency. The lower end of the hanger 5 can be appropriately lengthened to allow for arbitrary adjustment of the length of the hanger 5, facilitating even tension and uniform force distribution among the hangers 5. After adjustment, the excess portion is cut off, exposing half the thickness of the nut. A triangular iron is then installed on the nut as a rivet plate for fixation and positioning. When tightening the lower end of the hanger 5, a plastic isolation sleeve is installed, and a rubber isolation pad is installed between the nut, the rivet plate, and the channel steel main beam 3.

[0035] Modular Static Pressure Box Assembly System: The modular static pressure box assembly system uses the main channel steel beam 3 and the channel steel frame 2 on both sides parallel to the main channel steel beam 3 as boundaries for standardized modular design. The modular static pressure box assembly system includes several modular static pressure box unit structures, which are installed between adjacent main channel steel beams 3 and between the outermost main channel steel beam 3 and the channel steel frame 2. The modular static pressure box unit structure is mainly composed of angle steel frames 4 and galvanized steel plates 6 riveted and welded together. That is, the modular static pressure box unit structure includes angle steel frames 4, which are made of 25*4mm angle steel welded together. The angle steel frame 4 is partially covered with a galvanized steel plate 6. The edge of the galvanized steel plate 6 abuts against the bottom plate of the angle steel frame 4, and the edge of the galvanized steel plate 6 and the bottom plate of the angle steel frame 4 are riveted together by Φ6mm rivets 26, with the rivets 26 spaced no more than 100mm apart. For the modular static pressure box unit structure installed between adjacent channel steel main beams 3, the sides of the angle steel frame 4 parallel to the channel steel main beam 3 abut against the two adjacent channel steel main beams 3, and the sides of the angle steel frame 4 perpendicular to the channel steel main beam 3 abut against the corresponding side of the channel steel frame 2. For the structure installed at the outermost... The modular static pressure box unit structure between the outer channel steel main beam 3 and the channel steel frame 2 has an inner angle steel frame 4 parallel to the channel steel main beam 3 abutting against the outermost channel steel main beam 3, and the remaining three angle steel frames 4 abutting against the corresponding side of the channel steel frame 2. The joints of every two adjacent modular static pressure box unit structures abut against the same channel steel main beam 3, and the bottom plates of the angle steel frames 4 symmetrically abut against the top two sides of the channel steel main beam 3. A row of hangers 5 connected to the channel steel main beam 3 are all secured between the upright plates of the angle steel frames 4. The upright plates of the angle steel frames 4 are connected by... The tie bolts 7 are used for fastening connections. The tie bolts 7 are M6 in size and spaced no more than 100mm apart. The modular static pressure box unit structure that abuts against the channel steel frame 2 has its bottom plate of angle steel frame 4 abutting against the top of the channel steel frame 2, and its vertical plate abutting against the wall 8. A galvanized steel strip 9 is riveted to the outside of the angle steel frame 4. After the galvanized steel strip 9 is turned back, it is riveted to the wall 8 with flat steel 10 and expansion bolts 11. That is, the modular static pressure box unit structures are fastened together by the tie bolts 7, and the load is evenly transferred to the channel steel main beam 3 and the channel steel frame 2.

[0036] Sealing system: The sealing system mainly includes the application of sealing gasket 12 and sealant. Sealing gasket 12 is self-adhesive and its main purpose is to provide multiple layers of sealing protection to prevent air inside the static pressure chamber from escaping into the outside space. In the modular static pressure box unit structure, a sealing gasket 12 is provided between the edge of the galvanized steel plate 6 and the bottom plate of the angle steel frame 4, and sealant is applied to the inner and outer joints of the sealing gasket 12. After assembly, sealant is applied again according to the light leakage situation. At the junction of the modular static pressure box unit structure and the channel steel main beam 3, a sealing gasket 12 is provided between the bottom plate of the angle steel frame 4 and the top of the channel steel main beam 3, and sealant is applied to the inner and outer joints of the sealing gasket 12. The gap between the modular static pressure box unit structure and the channel steel main beam 3 is sealed by the gravity of the modular static pressure box unit structure. At the junction of the modular static pressure box unit structure and the channel steel frame 2, a sealing gasket 12 is provided between the bottom plate of the angle steel frame 4 and the top of the channel steel frame 2, and sealant is applied to the inner and outer joints of the sealing gasket 12. The gap between the modular static pressure box unit structure and the channel steel frame 2 is sealed by the gravity of the modular static pressure box unit structure. A sealing gasket 12 is provided between the edge of the galvanized steel strip 9 and the wall 8, and sealant is applied to the outer joints of the sealing gasket 12.

[0037] Thermal insulation system: Precast polyurethane insulation boards 13 are fixed to the modular static pressure box unit structure. The precast polyurethane insulation boards 13 are bonded and fixed within the space enclosed by the angle steel frame 4 and the galvanized steel plate 6. Then, the gaps are filled and leveled with foamed polyurethane 14. Finally, a 10mm thick rubber and plastic insulation layer 15 is applied to cover the leveled surface. The space between the angle steel frames 4 of the adjacent modular static pressure box unit structure, which are fixed to the top of the channel steel main beam 3, is first sealed with sealant and then filled and leveled with foamed polyurethane 14. Finally, the leveled surface is... A 10mm thick rubber and plastic insulation layer 15 is applied to cover the outer surface of the hanger 5. The rubber and plastic insulation layer 15 on the hanger 5 is applied first, and the rubber and plastic insulation layer 15 between the angle steel frames 4 of the adjacent modular static pressure box unit structure is applied later. This order can ensure the tightness of the insulation. A 10mm thick rubber and plastic insulation layer 15 is applied to the edge of the galvanized steel strip 9 on the modular static pressure box unit structure fixed to the wall 8. Example 2

[0038] This embodiment is based on embodiment 1, with the addition of a manhole structure, which is located in the center of a modular static pressure box unit structure.

[0039] like Figures 8 to 10As shown, an opening is provided at the center of the modular static pressure box unit structure. The manhole structure includes a manhole short pipe 18, with outwardly bent flanges at both the upper and lower ends. The upper flange 19 of the manhole short pipe 18 is fixedly connected to the galvanized steel plate 6 at the opening of the modular static pressure box unit structure by an upper cap bolt 20. The structure fastened between the two nuts of the upper cap bolt 20, from top to bottom, consists of a galvanized steel plate strip 24, a sealing gasket 12, the galvanized steel plate 6 of the modular static pressure box unit structure, the sealing gasket 12, the upper flange 19, and the galvanized steel plate strip 24. The lower flange 21 of the manhole short pipe 18 is connected and fixed to a manhole cover plate 23 by a lower cap bolt 22. The structure fastened between the two nuts of the lower cap bolt 22, from top to bottom, consists of a galvanized steel plate strip 24, the lower flange 21, the sealing gasket 12, and the manhole cover plate 23.

[0040] In specific implementation, the opening size of the modular static pressure box unit structure is 600mm×700mm, the length of the manhole short pipe 18 is 100mm, the flanges at the top and bottom are 30mm, the width of the galvanized steel plate pressure strip 24 is 30mm, the manhole cover plate 23 is covered with a multi-layer board with a thickness of δ=10mm, and the surface of the manhole short pipe 18 is covered with a rubber and plastic insulation layer 15 with a thickness of 10mm.

[0041] The embodiments described above merely illustrate the preferred implementation of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A modular static pressure box assembly structure system with giant stepped internal insulation, characterized in that: Includes a support system, a modular static pressure box assembly system, a sealing system, and a thermal insulation system located in the space below the steps (1); Support system: The support system includes a channel steel frame (2) set along the four side walls (8) of the space below the staircase (1). The slot of the channel steel frame (2) faces downward and is inclined along the slope of the staircase (1). The outer frame edge of the channel steel frame (2) is attached to the wall and riveted to the wall (8) by steel plate round steel tie fasteners (25). Multiple parallel channel steel main beams (3) are set at intervals inside the channel steel frame (2). The slot of the channel steel main beam (3) faces downward and is inclined along the slope of the staircase (1). The upper and lower ends of the channel steel main beam (3) respectively abut against and are fixed to the corresponding side of the channel steel frame (2). The channel steel main beam (3) is connected to the top plate of the staircase (1) by a row of hangers (5). The row of hangers (5) includes multiple hangers (5) set at intervals. Modular static pressure box assembly system: The modular static pressure box assembly system is designed with standardized modules based on the channel steel main beam (3) and the channel steel frame (2) on both sides parallel to the channel steel main beam (3); the modular static pressure box assembly system includes several modular static pressure box unit structures, which are installed between adjacent channel steel main beams (3) and between the outermost channel steel main beam (3) and the channel steel frame (2); the modular static pressure box unit structure includes an angle steel frame (4), and the part inside the angle steel frame (4) is covered with galvanized steel plate (6). The edge of the galvanized steel plate (6) abuts against the bottom plate of the angle steel frame (4), and the edge of the galvanized steel plate (6) and the bottom plate of the angle steel frame (4) are riveted together; for the modular static pressure box unit structure installed between adjacent channel steel main beams (3), the edges of the two angle steel frames (4) on both sides parallel to the channel steel main beam (3) abut against the two adjacent channel steel main beams (3), and the edges of the two angle steel frames (4) on both sides perpendicular to the channel steel main beam (3) abut against the corresponding side of the channel steel frame (2); for the installation on the outermost channel steel main beam ( 3) The modular static pressure box unit structure between the channel steel frame (2) and the channel steel frame (2) has its inner angle steel frame (4) on the side parallel to the channel steel main beam (3) abutting against the outermost channel steel main beam (3), and the remaining three angle steel frames (4) on the side abutting against the corresponding channel steel frame (2); the joint of each two adjacent modular static pressure box unit structures abuts against the same channel steel main beam (3), and the bottom plates of the angle steel frames (4) of the two structures symmetrically abut against the top two sides of the channel steel main beam (3), and the vertical plates of the angle steel frames (4) of the two structures are connected by tie bolts. The bolts (7) are fastened together. A row of hangers (5) connected to the main beam (3) of the channel steel are all locked between the upright plates of the angle steel frame (4) of the two. The modular static pressure box unit structure that abuts against the channel steel frame (2) has its bottom plate of the angle steel frame (4) abutting against the top of the channel steel frame (2), and its upright plate of the angle steel frame (4) abutting against the wall (8). At the same time, a galvanized steel strip (9) is riveted to the outside of the angle steel frame (4). After the galvanized steel strip (9) is turned back, it is riveted to the wall (8) with flat steel (10) and expansion bolts (11). Sealing system: In the modular static pressure box unit structure, a sealing gasket (12) is provided between the edge of the galvanized steel plate (6) and the bottom plate of the angle steel frame (4), and sealant is applied to the inner and outer joints of the sealing gasket (12); at the junction of the modular static pressure box unit structure and the channel steel main beam (3), a sealing gasket (12) is provided between the bottom plate of the angle steel frame (4) and the top of the channel steel main beam (3), and sealant is applied to the inner and outer joints of the sealing gasket (12); at the junction of the modular static pressure box unit structure and the channel steel frame (2), a sealing gasket (12) is provided between the bottom plate of the angle steel frame (4) and the top of the channel steel frame (2), and sealant is applied to the inner and outer joints of the sealing gasket (12); a sealing gasket (12) is provided between the edge of the galvanized steel strip (9) and the wall (8), and sealant is applied to the outer joint of the sealing gasket (12); Thermal insulation system: Precast polyurethane insulation board (13) is fixed on the modular static pressure box unit structure. The precast polyurethane insulation board (13) is bonded and fixed in the space enclosed by the angle steel frame (4) and the galvanized steel plate (6). Then, the gap is filled and leveled by foamed polyurethane (14). Finally, a layer of rubber and plastic insulation layer (15) is applied to the leveled surface. The angle steel frame (4) of the adjacent modular static pressure box unit structure is fixed on the top of the channel steel main beam (3). First, sealant is applied between the angle steel frame (4) of the modular static pressure box unit structure. Then, the gap is filled and leveled by foamed polyurethane (14). Finally, a layer of rubber and plastic insulation layer (15) is applied to the leveled surface. A layer of rubber and plastic insulation layer (15) is applied to the outer surface of the hanger (5). A layer of rubber and plastic insulation layer (15) is applied to the edge of the galvanized steel strip (9) of the modular static pressure box unit structure fixed to the wall (8).

2. The prefabricated structure system of the giant stepped internal insulation modular static pressure box according to claim 1, characterized in that: Angle steel sections (16) are welded and fixed on both sides of the end of the channel steel main beam (3). The two angle steel sections (16) are fixedly connected to the inner frame edge of the channel steel frame (2) by bolts.

3. The prefabricated structure system of the giant stepped internal insulation modular static pressure box according to claim 1, characterized in that: In the thermal insulation system, the thickness of the rubber and plastic insulation layer (15) is 10 mm.

4. The prefabricated structure system of the giant stepped internal insulation modular static pressure box according to claim 1, characterized in that: The bottom end of the hanger (5) is connected through the channel steel main beam (3), and the top end of the hanger (5) is connected to the channel steel section (17). The top end of the channel steel section (17) is connected to the expansion bolt (11), which is riveted to the top plate of the step (1).

5. The prefabricated structure system of the giant stepped internal insulation modular static pressure box according to claim 4, characterized in that: The top of the channel steel section (17) is provided with a Φ12 double semicircular strip hole with a distance of 28mm. The expansion bolt (11) passes through the strip hole and is riveted to the top plate of the step (1).

6. The prefabricated structure system of the giant stepped internal insulation modular static pressure box according to claim 1, characterized in that: It also includes a manhole structure, which is set in the center of a modular static pressure box unit structure. The manhole structure includes a manhole short pipe (18). Both the upper and lower ends of the manhole short pipe (18) are provided with outwardly bent flanges. The upper flange (19) of the manhole short pipe (18) is fixedly connected to the galvanized steel plate (6) of the modular static pressure box unit structure by the upper cap bolt (20). The lower flange (21) of the manhole short pipe (18) is connected and fixed to the manhole cover plate (23) by the lower cap bolt (22).

7. The prefabricated structure system of the giant stepped internal insulation modular static pressure box according to claim 6, characterized in that: The structure for fastening the two nuts of the upper cap bolt (20) from top to bottom consists of a galvanized steel plate strip (24), a sealing gasket (12), a galvanized steel plate (6) of the modular static pressure box unit structure, a sealing gasket (12), an upper flange (19), and a galvanized steel plate strip (24); the structure for fastening the two nuts of the lower cap bolt (22) from top to bottom consists of a galvanized steel plate strip (24), a lower flange (21), a sealing gasket (12), and a manhole cover (23).

8. The prefabricated structure system of the giant stepped internal insulation modular static pressure box according to claim 7, characterized in that: A layer of rubber and plastic insulation (15) is applied to the surface of the manhole short pipe (18).

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