Steel structure modular building capable of being rapidly manufactured and installed and vertical and horizontal connecting method of steel structure modular building

Abstract

The invention discloses a steel structure modular building capable of being rapidly manufactured and installed and a vertical and horizontal connecting method of the steel structure modular building. The modular building comprises a plurality of standardized building modules, vertical connecting structures and horizontal connecting structures, wherein the vertical connecting structures and the horizontal connecting structures are used for connecting the adjacent standardized building modules. Each standardized building module comprises a steel frame of a cubic frame structure, light wallboards embedded in the four side faces of the steel frame, light battens assembled on the top face of the steel frame, and concrete composite floor slabs assembled on the bottom face of the steel frame. An inner partition plate II and an inner partition plate I provided with holes are arranged in a steel pipe column forming the steel frame, so that a cavity used for containing the vertical connecting structure is defined at the upper end and the lower end of the steel pipe column, and grouting holes and / or grout outlet holes are further formed in the pipe wall of the cavity. A connecting reinforcement cage is placed in the cavity, grouting materials are poured to complete vertical connection, and horizontal connection is conducted through welding. The modular building is easy to manufacture and high in construction speed, and the integrity and the earthquake resistance can be effectively improved.

Description

Technical Field

[0001] This invention relates to the field of building structure engineering technology, specifically to a modular steel structure building that can be quickly fabricated and installed, and its vertical and horizontal connection method. Background Technology

[0002] Modular steel structure buildings are a new type of building system that breaks down a building into several prefabricated modular units in a factory, which are then transported to the site for rapid assembly. This system boasts significant advantages such as short construction cycles, stable quality, and environmental friendliness, and is widely used in emergency medical facilities, multi-story apartments, and temporary office and accommodation buildings. However, the current promotion and application of modular steel structure buildings still faces the following key technical bottlenecks:

[0003] Firstly, there is a significant conflict between the structural rigidity of the modules themselves and the comfort of building use. To meet the economic requirements of transportation and hoisting, modular units typically use lightweight materials and steel components with small cross-sections, resulting in relatively low module rigidity. On the one hand, this makes the floor system vibrate noticeably under load, affecting user comfort; on the other hand, lightweight enclosure walls often lack sufficient sound insulation and thermal insulation performance, making it difficult to meet the requirements of high-quality buildings.

[0004] Secondly, the performance of inter-module connections restricts the overall structural integrity and seismic resistance. Connection nodes are crucial for ensuring the overall load-bearing performance of modular buildings. Current vertical connections mainly employ bolting and welding. Bolting is difficult to construct, and vertical connections between local components of the module are challenging. While traditional on-site welding can guarantee rigidity, it also presents the problem of difficulty in welding local vertical components. These limitations of connection methods severely restrict the widespread application of modular buildings in seismic fortification areas.

[0005] Third, the applicable building height is limited under the existing technology system. Due to the limited rigidity of the modules themselves and the insufficient overall integrity of the connection nodes, current modular steel structure buildings are mostly used in low-rise buildings of one or two stories. There are few application cases in multi-story and high-rise buildings, especially in high-intensity seismic zones, and the technology system is not yet mature. Summary of the Invention

[0006] The purpose of this invention is to provide a modular steel structure building that can be quickly manufactured and installed, including several standardized building modules, as well as vertical and horizontal connection structures connecting adjacent standardized building modules.

[0007] The standardized building modules include steel frames, lightweight wall panels, composite concrete floor slabs, lightweight strip panels, and internal partitions.

[0008] The steel frame comprises several steel pipe columns as vertical members and several long and short steel pipe beams as horizontal members. Both ends of the steel pipe columns are connected to the long and short steel pipe beams, forming a cubic frame structure. The six square annular frames of the steel frame cube are designated as the top, bottom, side I, side II, side III, and side IV square annular frames. Lightweight wall panels are embedded within the square annular frames of side I, side II, side III, and side IV. Lightweight slabs and composite concrete floor slabs are laid within the top and bottom square annular frames, respectively.

[0009] The steel pipe column has open ends at both the top and bottom. An inner diaphragm I is installed at the open end of the steel pipe column, flush with the upper surface of the top long / short steel pipe beam and the lower surface of the bottom long / short steel pipe beam. An inner diaphragm II is installed at the open end of the steel pipe column, flush with the lower surface of the top long / short steel pipe beam and the upper surface of the bottom long / short steel pipe beam. A hole is formed at the center of each inner diaphragm I, creating a cavity at each end of the steel pipe column, enclosed by the steel pipe column wall, inner diaphragm I, and inner diaphragm II. These two cavities are designated as the bottom cavity and the top cavity, respectively.

[0010] When the standardized building module is used as the first-floor module, the bottom cavity of the first-floor module has grouting holes and grout outlet holes spaced apart on its pipe wall, communicating with the bottom cavity, and located at the bottom and top of the bottom cavity, respectively. Grouting holes are also provided on the bottom pipe wall of the top cavity of the first-floor module.

[0011] When the standardized building module is used as a non-first-floor module, a grout outlet is provided on the top pipe wall of the bottom cavity of the non-first-floor module, and a grouting hole is provided on the bottom pipe wall of the top cavity of the non-first-floor module.

[0012] The vertical connection structure includes grouting material and connecting steel cage.

[0013] The standardized building modules are connected vertically between the first-floor modules and the foundation, as well as between adjacent standardized building modules. Standardized building modules on the same floor are sequentially connected horizontally.

[0014] Furthermore, both ends of the steel pipe column extend 10mm beyond the top surface of the top square annular frame and the bottom surface of the bottom square annular frame, respectively.

[0015] Furthermore, the steel pipe column, long steel pipe beam, and short steel pipe beam are all rectangular steel pipes. The side length of the steel pipe column's cross-section that connects to the long steel pipe beam is denoted as side length a, and the side length of the steel pipe column's cross-section that connects to the short steel pipe beam is denoted as side length b.

[0016] The length of the side length 'a' is the same as the cross-sectional width of the long steel pipe beam.

[0017] The length of the side b is greater than the cross-sectional width of the short steel pipe beam.

[0018] The cross-sectional width of the long steel pipe beam is the same as that of the steel pipe beam.

[0019] Furthermore, side I and side III are arranged opposite to each other, and the square ring frame formed by side I and side III is composed of two steel pipe columns and two short steel pipe beams.

[0020] Sides II and IV are arranged opposite to each other. The square-ring frame formed by sides II and IV is composed of two steel pipe columns and two long steel pipe beams. Vertical and diagonal web members are also provided within the square-ring frame of sides II and IV. Several vertical web members are spaced apart, with each vertical web member's ends perpendicularly positioned on the two long steel pipe beams. Several diagonal web members are arranged at an angle, forming a truss structure together with the vertical web members, steel pipe columns, and long steel pipe beams.

[0021] The vertical and diagonal web members have the same cross-sectional width, which is half the cross-sectional width of the long steel pipe beam.

[0022] The outer edges of the vertical and diagonal web members are aligned with the outer edges of the steel pipe columns and long steel pipe beams. The outer edge refers to the side facing away from the interior of the steel frame.

[0023] Furthermore, the lightweight wall panel is a foamed concrete lightweight panel or a sintered silicon crystal hollow lightweight panel.

[0024] When the lightweight wall panel is assembled on side I and side III, it is referred to as lightweight wall panel I. The lightweight wall panel I is installed in the square ring frame formed by side I and side III.

[0025] When the lightweight wall panel is assembled on side II and side IV, it is referred to as lightweight wall panel II. The lightweight wall panel II is installed on side II and side IV, and one side of the lightweight wall panel II is in contact with the inner edge of the vertical web member and the diagonal web member, while the other side faces the inside of the steel frame.

[0026] Furthermore, the square-ring frame formed by the bottom surface of the steel frame is composed of two long steel pipe beams and two short steel pipe beams.

[0027] The long steel pipe beam and the two short steel pipe beams are of equal height.

[0028] The steel frame also includes secondary beams, equal-sided angle steel, and cylindrical head studs.

[0029] The bottom surface is provided with several secondary crossbeams at intervals. The two ends of each secondary crossbeam are connected to two long steel pipe beams respectively, and the setting direction of the secondary crossbeams is parallel to the setting direction of the short steel pipe beams.

[0030] The height of the secondary crossbeam is less than the height of the long steel pipe beam and the short steel pipe beam, and the top elevation of the secondary crossbeam is less than the top elevation of the long steel pipe beam and the short steel pipe beam.

[0031] At the top elevation of the secondary crossbeam, equilateral angle steel is welded along the inner ring of the bottom square annular frame. One side of the equilateral angle steel is attached to the inner ring of the bottom square annular frame, and the top surface of the other side is flush with the top surface of the secondary crossbeam, denoted as angle steel leg I. Several cylindrical head studs are welded at intervals to the top surfaces of angle steel leg I and the secondary crossbeam.

[0032] The concrete composite floor slab includes a precast concrete composite base slab that overlaps the angle steel leg I and the top surface of the secondary beam, and a cast-in-place concrete surface layer located on the precast concrete composite base slab.

[0033] The precast concrete composite base slab is pre-embedded with truss reinforcement bars. Part of the truss reinforcement bars are located inside the precast concrete composite base slab, and part of them extend out of the precast concrete composite base slab. The top surface of the extended end is covered with surface reinforcement bars.

[0034] The portion of the truss reinforcement extending out of the precast concrete composite bottom slab, as well as the surface reinforcement, are embedded in the cast-in-place concrete surface layer.

[0035] Furthermore, the square-ring frame formed by the top surface of the steel frame is composed of two long steel pipe beams and two short steel pipe beams.

[0036] The long steel pipe beam and the two short steel pipe beams are of equal height.

[0037] The steel frame also includes equilateral angle steel and cylindrical head studs.

[0038] Equal-sided angle steel is welded along the inner ring of the top square annular frame. One side of the equal-sided angle steel is attached to the inner ring of the top square annular frame, and several cylindrical head studs are welded at intervals on the other side of the angle steel, which is referred to as angle steel leg II.

[0039] The lightweight strip is laid on the top surface of angle steel leg II and includes hollow lightweight strip, foam plug, steel bar, longitudinal steel bar and mortar layer.

[0040] The hollow lightweight strip plate overlaps the top surface of the angle steel member II. The hollow lightweight strip plate has through holes inside, and one end of the through hole that communicates with the outside faces the long steel pipe beam.

[0041] A foam plug is placed in each of the through holes of the hollow lightweight slab, near both ends of the through hole. The reinforcing bar is a bent reinforcing bar, including a reinforcing bar body and a bent section. The reinforcing bar body extends into the through hole and points towards the foam plug, while the bent section is positioned upwards. The longitudinal reinforcing bar is positioned between the bent section and the top cylindrical head stud, and its direction is perpendicular to the reinforcing bar.

[0042] Mortar is poured between the top square ring frame, angle steel limb II, and hollow lightweight slab to form a mortar layer. The top elevation of the mortar layer is the same as the top elevation of the top square ring frame.

[0043] Furthermore, the vertical connection structure also includes a rubber strip.

[0044] The foundation contains a pre-embedded connecting steel cage. When the standardized building module is connected to the foundation as the first-floor module, the pre-embedded connecting steel cage extends into the bottom cavity of the first-floor module through holes in the inner partition I, and grout is injected through grouting holes on the wall of the bottom cavity of the first-floor module. Grouting stops when the grout overflows through the grout outlet hole on the wall of the bottom cavity of the first-floor module, and the grouting holes and grout outlet holes on the bottom cavity of the first-floor module are blocked, thus achieving a vertical connection between the first-floor module and the foundation.

[0045] When connecting standardized building modules on adjacent floors, rubber strips are placed inside the steel pipe column of the lower module and above the inner partition I at the top of the lower module. The two ends of the connecting steel cage extend through holes in the inner partition I into the top cavity of the lower module and the bottom cavity of the upper module, respectively. Grouting material is injected through grouting holes on the wall of the top cavity of the lower module until it overflows through grout outlet holes on the wall of the bottom cavity of the upper module. Grouting is then stopped, and the grouting holes on the top cavity wall of the lower module and the grout outlet holes on the bottom cavity wall of the upper module are blocked, completing the vertical connection of the standardized building modules on adjacent floors.

[0046] Furthermore, the horizontal connection structure includes connection structure I for steel pipe columns between adjacent standardized building modules and connection structure II for long steel pipe beams and short steel pipe beams between adjacent standardized building modules.

[0047] Connection Structure I: When adjacent standardized building modules are stacked, the steel pipe columns of different standardized building modules are spliced ​​together, and bevel welding is performed at the splicing position of the adjacent sides of the top of the two steel pipe columns to form a weld.

[0048] Connection Structure II: When adjacent standardized building modules are stacked, the long steel pipe beams / short steel pipe beams of different standardized building modules are spliced ​​together. Several steel plates are placed at intervals on the top surface of the two long steel pipe beams / short steel pipe beams, and the steel plates are welded to the two long steel pipe beams / short steel pipe beams by fillet welds.

[0049] The second objective of this invention is to provide a method for vertical and horizontal connection of a modular steel structure building that can be quickly fabricated and installed, comprising the following steps:

[0050] S1. Fabricate standardized building modules, connect steel cages and steel plates in the factory, and transport the fabricated standardized building modules, connecting steel cages and steel plates to the project site;

[0051] The standardized building module includes a steel frame, vertical web members, diagonal web members, secondary beams, internal partitions, lightweight wall panels, composite concrete floor slabs, and lightweight strip panels, and each standardized building module has grouting holes and / or grout outlet holes at corresponding positions.

[0052] S2. A connecting steel cage is pre-embedded in the foundation, denoted as connecting steel cage I;

[0053] S3. Hoist the first-floor module so that the connecting steel cage I extends into the bottom cavity of the first-floor module; then inject grout into the bottom cavity through the grouting hole on the bottom cavity of the first-floor module until the grout overflows through the grout outlet hole on the bottom cavity of the first-floor module, then stop grouting.

[0054] Seal the grouting holes and grout outlet holes on the bottom cavity of the first-floor module to complete the vertical connection between the foundation and the first-floor module;

[0055] S4. At the splicing position of the adjacent sides of the top surface of the first-floor module and the two steel pipe columns, bevel welding is performed to form a weld.

[0056] Steel plates are placed at the splicing positions of the adjacent sides of the top surfaces of the first-floor module and the two long steel pipe beams / short steel pipe beams, and the steel plates are welded to the two long steel pipe beams / short steel pipe beams using fillet welds.

[0057] S5. Place a rubber strip on the inner partition I at the top of the first-layer module;

[0058] S6. Insert one end of the connecting steel cage into the top cavity of the first-floor module, and denote it as connecting steel cage II;

[0059] S7. Hoist the second-layer module so that the other end of the connecting steel cage II is inserted into the bottom cavity of the second-layer module; then inject grout into the top cavity of the first-layer module and the bottom cavity of the second-layer module through the grouting hole on the top cavity of the first-layer module until the grout overflows through the grout outlet hole on the bottom cavity of the second-layer module, then stop grouting.

[0060] Seal the grouting holes on the top cavity of the first-layer module and the grout outlet holes on the bottom cavity of the second-layer module to complete the vertical connection between the first-layer module and the second-layer module;

[0061] S8. At the splicing position of the adjacent sides of the top surface of the two steel pipe columns in the second layer module, bevel welding is performed to form a weld.

[0062] A steel plate is placed at the splicing position of the adjacent sides of the top surface of the two long steel pipe beams / short steel pipe beams in the second layer module, and the steel plate is welded to the two long steel pipe beams / short steel pipe beams by fillet weld.

[0063] S9. Based on the number of module layers, repeat steps S5 to S8.

[0064] The technical effects of this invention are undeniable, and its beneficial effects are as follows:

[0065] 1) The modular steel structure building proposed in this invention is simple to process and manufacture, and the component materials of the modules are easy to purchase, which can significantly save the material cost and manufacturing cost of the modules;

[0066] 2) The steel structure building module proposed in this invention can effectively reduce the weight of modular buildings, making it easier to transport and hoist them on site;

[0067] 3) The modular steel structure building proposed in this invention has a fast construction speed, which is conducive to the promotion of modular steel structure buildings and has broad market application prospects. It is especially suitable for the construction of emergency buildings that require rapid installation.

[0068] 4) The connection method proposed in this invention based on modular steel structure buildings not only has low construction difficulty for vertical connections, but also effectively enhances the integrity of modular buildings and improves the stability and seismic performance of building structures. Attached Figure Description

[0069] Figure 1 This is a schematic diagram of the modular steel structure building proposed in this invention;

[0070] Figure 2 A schematic diagram of standardized building modules;

[0071] Figure 3 Figure 1 shows a schematic diagram of a steel frame, wherein: Figure (a) is a schematic diagram of a modular steel frame without vertical and diagonal web members, and Figure (b) is a schematic diagram of a modular steel frame with vertical and diagonal web members.

[0072] Figure 4 A schematic diagram of the installation of the concrete composite floor slab at the bottom of a standardized building module;

[0073] Figure 5 A schematic diagram of the installation of lightweight strip panels on the top of standardized building modules;

[0074] Figure 6 This is a top view showing the connection between the first-level module and the foundation.

[0075] Figure 7 for Figure 6 A cross-sectional view, of which Figure (a) is Figure 7 The sectional view of section 1-1, Figure (b) is Figure 7 Sectional view of section 2-2 (only the section view at the connection between the first-floor module and the foundation is shown);

[0076] Figure 8 A top view showing the connection between adjacent standardized building modules;

[0077] Figure 9for Figure 8 A cross-sectional view, of which Figure (a) is Figure 8 The sectional view of section 3-3, Figure (b) is Figure 8 Section 4-4 (only the section view at the connection point of adjacent standardized building modules is shown).

[0078] Figure 10 A schematic diagram of the horizontal connection structure for standardized building modules.

[0079] In the diagram: Standardized building module 1, steel frame 11, steel pipe column 111, long steel pipe beam 1121, short steel pipe beam 1122, vertical web member 113, diagonal web member 114, secondary crossbeam 115, equilateral angle steel 116, column head stud 117, inner partition I 1181, inner partition II 1182, bottom cavity 1183, top cavity 1184, grouting hole 1191, grout outlet hole 1192; lightweight wall panel 12; concrete 13. Precast concrete composite floor slab, 131. Precast concrete composite base slab, 132. Surface reinforcement, 133. Cast-in-place concrete surface layer; 14. Lightweight strip slab, 141. Hollow lightweight strip slab, 142. Foam plug, 143. Reinforcing bar, 144. Longitudinal reinforcement, 145. Mortar layer; 2. Vertical connection structure, 21. Grouting material, 22. Connecting reinforcement cage, 23. Rubber strip; 3. Horizontal connection structure, 31. Weld, 321. Thick steel plate, 322. Fillet weld. Detailed Implementation

[0080] The present invention will be further described below with reference to embodiments, but it should not be construed that the scope of the present invention is limited to the following embodiments. Various substitutions and modifications made based on ordinary technical knowledge and common practices in the art without departing from the above-described technical concept of the present invention should be included within the scope of protection of the present invention.

[0081] Example 1:

[0082] A modular steel structure building that can be quickly fabricated and installed includes several standardized building modules 1, as well as vertical connection structures 2 and horizontal connection structures 3 connecting adjacent standardized building modules 1.

[0083] The standardized building module 1 includes a steel frame 11, lightweight wall panels 12, composite concrete floor slabs 13, lightweight strip panels 14, and internal partitions. The steel frame 11, lightweight wall panels 12, composite concrete floor slabs 13, and lightweight strip panels 14 enclose a space for use as a room, wherein the lightweight wall panels 12 are used as partitions, window walls, and doors facing passageways or corridors.

[0084] The steel frame 11 includes several steel pipe columns 111 as vertical members and several long steel pipe beams 1121 and short steel pipe beams 1122 as horizontal members. The upper and lower ends of the steel pipe columns 111 are connected to the long steel pipe beams 1121 and short steel pipe beams 1122, forming a cubic frame structure. The six square annular frames of the cubic steel frame 11 are respectively designated as the top surface, bottom surface, side I, side II, side III, and side IV square annular frames. Lightweight wall panels 12 are embedded within side I, side II, side III, and side IV square annular frames. Lightweight strip panels 14 and concrete composite floor slabs 13 are respectively laid within the top surface square annular frame and the bottom surface square annular frame.

[0085] The steel pipe column 111 has open ends at both the top and bottom. An inner partition I1181 is installed at the open end of the steel pipe column 111, flush with the upper surface of the top long steel pipe beam 1121 / short steel pipe beam 1122 and the lower surface of the bottom long steel pipe beam 1121 / short steel pipe beam 1122. An inner partition II1182 is installed at the open end of the steel pipe column 111, flush with the lower surface of the top long steel pipe beam 1121 / short steel pipe beam 1122 and the upper surface of the bottom long steel pipe beam 1121 / short steel pipe beam 1122. A hole is formed at the center of the inner partition I1181, creating a cavity at each end of the steel pipe column 111, enclosed by the pipe wall of the steel pipe column 111, the inner partition I1181, and the inner partition II1182. These two cavities are designated as the bottom cavity 1183 and the top cavity 1184, respectively.

[0086] When the standardized building module 1 is used as the first-floor module, the bottom cavity 1183 of the first-floor module has grouting holes 1191 and grout outlet holes 1192 spaced apart on its pipe wall, communicating with the bottom cavity 1183, and located at the bottom and top of the bottom cavity 1183, respectively. The bottom pipe wall of the top cavity 1184 of the first-floor module has grouting holes 1191.

[0087] When the standardized building module 1 is used as a non-first-floor module, a grout outlet 1192 is provided on the top pipe wall of the bottom cavity 1183 of the non-first-floor module, and a grouting hole 1191 is provided on the bottom pipe wall of the top cavity 1184 of the non-first-floor module.

[0088] The vertical connection structure 2 includes grouting material 21 and connecting steel cage 22.

[0089] The standardized building modules 1, as well as those on adjacent floors, are connected by vertical connection structures 2. Standardized building modules 1 on the same floor are sequentially connected by horizontal connection structures 3.

[0090] Example 2:

[0091] The main structure of this embodiment is the same as that of Embodiment 1. Further, the steel frame 11 is a cubic frame structure, including four steel pipe columns 111 as vertical members and eight steel pipe beams as horizontal members. The steel pipe beams include four parallel long steel pipe beams 1121 and four parallel short steel pipe beams 1122. The four steel pipe columns 111 are arranged in parallel, and the upper / lower end of each steel pipe column 111 is connected to one long steel pipe beam 1121 and one short steel pipe beam 1122. The steel pipe columns 111, long steel pipe beams 1121, and short steel pipe beams 1122 are perpendicular to each other in pairs.

[0092] Example 3:

[0093] The main structure of this embodiment is the same as any one of embodiments 1 to 2. Furthermore, the two ends of the steel pipe column 111 extend 10mm beyond the top surface of the top square annular frame and the bottom surface of the bottom square annular frame, respectively.

[0094] Example 4:

[0095] The main structure of this embodiment is the same as any one of embodiments 1 to 3. Furthermore, the steel pipe column 111, the long steel pipe beam 1121, and the short steel pipe beam 1122 are all rectangular steel pipes. The side length of the cross-section of the steel pipe column 111 connected to the long steel pipe beam 1121 is denoted as side length a, and the side length of the cross-section connected to the short steel pipe beam 1122 is denoted as side length b.

[0096] The length of the side length a is the same as the cross-sectional width of the long steel pipe beam 1121.

[0097] The length of the side b is greater than the cross-sectional width of the short steel pipe beam 1122.

[0098] The cross-sectional width of the long steel pipe beam 1121 is the same as that of the steel pipe beam 1122.

[0099] Example 5:

[0100] The main structure of this embodiment is the same as any one of embodiments 1 to 4. Furthermore, side I and side III are arranged opposite to each other, and the square ring frame formed by side I and side III is enclosed by two steel pipe columns 111 and two short steel pipe beams 1122.

[0101] Sides II and IV are arranged opposite to each other. The square-ring frame formed by sides II and IV is enclosed by two steel pipe columns 111 and two long steel pipe beams 1121. Vertical web members 113 and diagonal web members 114 are also provided within the square-ring frame of sides II and IV. A plurality of vertical web members 113 are spaced apart, and the two ends of each vertical web member 113 are respectively vertically mounted on two long steel pipe beams 1121. A plurality of diagonal web members 114 are arranged at an angle, and together with the vertical web members 113, steel pipe columns 111, and long steel pipe beams 1121, they form a truss structure.

[0102] The vertical web members 113 and the diagonal web members 114 have the same cross-sectional width, which is half the cross-sectional width of the long steel pipe beam 1121.

[0103] The outer edges of the vertical web members 113 and the diagonal web members 114 are aligned with the outer edges of the steel pipe column 111 and the long steel pipe beam 1121. The outer edge refers to the side away from the interior of the steel frame 11.

[0104] Example 6:

[0105] The main structure of this embodiment is the same as that of embodiment 5. Furthermore, the lightweight wall panel 12 is a foamed concrete lightweight strip or a sintered silicon crystal hollow lightweight strip.

[0106] When the lightweight wall panel 12 is assembled on side I and side III, it is referred to as lightweight wall panel I. The lightweight wall panel I is installed in the square ring frame formed by side I and side III.

[0107] When the lightweight wall panel 12 is assembled on side II and side IV, it is referred to as lightweight wall panel II. The lightweight wall panel II is installed in the square ring frame formed by side II and side IV, and one side of the lightweight wall panel II is in contact with the inner edge of the vertical web member 113 and the diagonal web member 114, while the other side faces the inside of the steel frame 11.

[0108] In this embodiment, multiple U-shaped clips are fixed at intervals using nails on the steel pipe columns 111 and short steel pipe beams 1122 that constitute side I and side III, and on the steel pipe columns 111 and long steel pipe beams 1121 that constitute side II and side IV. The U-shaped clips are made of galvanized steel plates bent into shape.

[0109] In side I and side III, the lightweight wall panel 12 is installed in a U-shaped clip, and mortar is filled between the lightweight wall panel 12 and the steel pipe column 111 and the short steel pipe beam 1122.

[0110] In side II and side IV, the lightweight wall panel 12 is installed in a U-shaped clip, and mortar is filled between the lightweight wall panel 12 and the steel pipe column 111 and the long steel pipe beam 1121.

[0111] Example 7:

[0112] The main structure of this embodiment is the same as any one of embodiments 1 to 6. Furthermore, the square ring frame formed by the bottom surface of the steel frame 11 is formed by two long steel pipe beams 1121 and two short steel pipe beams 1122.

[0113] The long steel pipe beam 1121 and the two short steel pipe beams 1122 have the same height.

[0114] The steel frame 11 also includes a secondary crossbeam 115, an equilateral angle steel 116, and a cylindrical head stud 117.

[0115] The bottom surface is provided with a number of secondary crossbeams 115 at intervals. The two ends of each secondary crossbeam 115 are respectively connected to two long steel pipe beams 1121, and the setting direction of the secondary crossbeams 115 is parallel to the setting direction of the short steel pipe beams 1122.

[0116] The height of the secondary crossbeam 115 is less than the height of the long steel pipe beam 1121 and the short steel pipe beam 1122, and the top elevation of the secondary crossbeam 115 is less than the top elevation of the long steel pipe beam 1121 and the short steel pipe beam 1122.

[0117] At the top elevation of the secondary crossbeam 115, an equilateral angle steel 116 is welded along the inner ring of the bottom square annular frame (the top surface of the bottom-welded equilateral angle steel 116 is flush with the top surface of the secondary crossbeam 115; therefore, the bottom-welded equilateral angle steel 116 is not a continuous square annular structure, but is interrupted at the secondary crossbeam 115). One side of the bottom equilateral angle steel 116 is attached to the inner ring of the bottom square annular frame, and the top surface of the other side is flush with the top surface of the secondary crossbeam 115, denoted as angle steel leg I. Several cylindrical head studs 117 are welded at intervals to the top surfaces of angle steel leg I and the secondary crossbeam 115.

[0118] The concrete composite floor slab 13 includes a precast concrete composite base slab 131 that overlaps the top surface of the angle steel leg I and the secondary beam 115, and a cast-in-place concrete surface layer 133 located on the precast concrete composite base slab 131.

[0119] The precast concrete composite base slab 131 is pre-embedded with truss reinforcement bars. Part of the truss reinforcement bars are located inside the precast concrete composite base slab 131, and part of them extend out of the precast concrete composite base slab 131. The top surface of the extended end is covered with surface reinforcement bars 132.

[0120] The portion of the truss reinforcement extending out of the precast concrete composite bottom slab 131, and the surface reinforcement 132 are embedded in the cast-in-place concrete surface layer 133.

[0121] Example 8:

[0122] The main structure of this embodiment is the same as any one of embodiments 1 to 7. Furthermore, the square ring frame formed by the top surface of the steel frame 11 is formed by two long steel pipe beams 1121 and two short steel pipe beams 1122.

[0123] The long steel pipe beam 1121 and the two short steel pipe beams 1122 have the same height.

[0124] The steel frame 11 also includes equilateral angle steel 116 and cylindrical head studs 117.

[0125] An equilateral angle steel 116 is welded along the inner ring of the top square annular frame. One side of the equilateral angle steel 116 is attached to the inner ring of the top square annular frame, and several cylindrical head studs 117 are welded at intervals on the other side of the angle steel, which is referred to as angle steel leg II.

[0126] The lightweight strip 14 is laid on the top surface of the angle steel leg II and includes a hollow lightweight strip 141, a foam plug 142, a steel bar 143, a longitudinal steel bar 144, and a mortar layer 145.

[0127] In this embodiment, the hollow lightweight strip 141 is a sintered silicon crystal hollow lightweight strip. The hollow lightweight strip 141 overlaps the top surface of the angle steel member II, and the hollow lightweight strip 141 has a through hole inside, with one end of the through hole communicating with the outside facing the long steel pipe beam 1121.

[0128] A foam plug 142 is placed in the through hole of the hollow lightweight strip 141 at each end near the two ends of the through hole. The reinforcing bar 143 is a bent reinforcing bar, including a reinforcing bar body and a bent section. The reinforcing bar body extends into the through hole and points towards the foam plug 142, while the bent section is set upwards. The longitudinal reinforcing bar 144 is set between the bent section and the top cylindrical head stud 117, and its setting direction is perpendicular to the reinforcing bar 143.

[0129] Mortar is poured between the top square ring frame, angle steel limb II and hollow lightweight strip 141 to form mortar layer 145. The top elevation of mortar layer 145 is the same as the top elevation of the top square ring frame.

[0130] Example 9:

[0131] The main structure of this embodiment is the same as any one of embodiments 1 to 8. Furthermore, the vertical connection structure 2 also includes a rubber strip 23.

[0132] The foundation contains a pre-embedded connecting steel cage 22. When the standardized building module 1 is connected to the foundation as the first-floor module, the pre-embedded connecting steel cage 22 extends into the bottom cavity 1183 of the first-floor module through the holes in the inner partition I1181, and grout 21 is injected through the grouting holes 1191 on the wall of the bottom cavity 1183 of the first-floor module. Grouting stops when the grout 21 overflows through the grout outlet holes 1192 on the wall of the bottom cavity 1183 of the first-floor module, and the grouting holes 1191 and grout outlet holes 1192 on the bottom cavity 1183 of the first-floor module are blocked, thus achieving a vertical connection between the first-floor module and the foundation.

[0133] When connecting adjacent standardized building modules 1, rubber strips 23 are placed inside the steel pipe column 111 of the lower module and above the inner partition I1181 at the top of the lower module. The two ends of the connecting steel cage 22 extend into the top cavity 1184 of the lower module and the bottom cavity 1183 of the upper module through the holes on the inner partition I1181, respectively. Grouting material 21 is injected through the grouting hole 1191 on the wall of the top cavity 1184 of the lower module until the grouting material 21 overflows through the grout outlet hole 1192 on the wall of the bottom cavity 1183 of the upper module. Grouting is stopped when the grouting hole 1191 on the wall of the top cavity 1184 of the lower module and the grout outlet hole 1192 on the wall of the bottom cavity 1183 of the upper module are blocked, thus completing the vertical connection of the adjacent standardized building modules 1.

[0134] Example 10:

[0135] The main structure of this embodiment is the same as any one of embodiments 1 to 9. Further, the horizontal connection structure 3 includes connection structure I of steel pipe columns 111 between adjacent standardized building modules 1 and connection structure II of long steel pipe beams 1121 and short steel pipe beams 1122 between adjacent standardized building modules 1.

[0136] Connection Structure I: When adjacent standardized building modules 1 are stacked, the steel pipe columns 111 of different standardized building modules 1 are spliced ​​together, and bevel welding is performed at the splicing position of the adjacent sides of the top of the two steel pipe columns 111 (the two steel pipe columns 111 here are steel pipe columns 111 of two different standardized building modules 1) to form weld 31.

[0137] Connection Structure II: When adjacent standardized building modules 1 are stacked, the long steel pipe beams 1121 / short steel pipe beams 1122 of different standardized building modules 1 are spliced ​​together. Several steel plates 321 are placed at intervals on the top surface of the two long steel pipe beams 1121 / short steel pipe beams 1122 (here, the two long steel pipe beams 1121 / short steel pipe beams 1122 are the long steel pipe beams 1121 / short steel pipe beams 1122 of two different standardized building modules 1), and the steel plates 321 are welded to the two long steel pipe beams 1121 / short steel pipe beams 1122 by fillet welds 322.

[0138] Example 11:

[0139] A method for vertical and horizontal connection of a modular steel structure building that can be quickly fabricated and installed, based on any one of embodiments 1 to 10, includes the following steps:

[0140] S1. Standardized building module 1 is manufactured in the factory, and steel cage 22 and steel plate 321 are connected. The manufactured standardized building module 1 and steel cage 22 and steel plate 321 are transported to the project site.

[0141] The standardized building module 1 includes a steel frame 11, vertical web members 113, diagonal web members 114, secondary crossbeams 115, internal partitions, lightweight wall panels 12, composite concrete floor slabs 13 and lightweight strip panels 14, and each standardized building module 1 has a grouting hole 1191 and / or a grout outlet hole 1192 at the corresponding position.

[0142] S2. Embed a connecting steel cage 22 in the foundation, denoted as connecting steel cage I;

[0143] S3. Hoist the first-floor module so that the connecting steel cage I extends into the bottom cavity 1183 of the first-floor module; then inject grout 21 into the bottom cavity 1183 through the grouting hole 1191 on the bottom cavity 1183 of the first-floor module until the grout 21 overflows through the grout outlet hole 1192 on the bottom cavity 1183 of the first-floor module, and then stop grouting.

[0144] Seal the grouting hole 1191 and grout outlet hole 1192 on the cavity 1183 at the bottom of the first-floor module to complete the vertical connection between the foundation and the first-floor module;

[0145] S4. At the splicing position of the adjacent sides of the top surface of the first-floor module and the two steel pipe columns 111, bevel welding is performed to form weld 31.

[0146] A steel plate 321 is placed at the splicing position of the adjacent sides of the top surface of the first-layer module and the two long steel pipe beams 1121 / short steel pipe beams 1122. The steel plate 321 is welded to the two long steel pipe beams 1121 / short steel pipe beams 1122 by fillet weld 322.

[0147] S5. Place rubber strip 23 on the inner partition I1181 at the top of the first-layer module;

[0148] S6. Insert one end of the connecting steel cage 22 into the top cavity 1184 of the first-floor module, and denot it as connecting steel cage II;

[0149] S7. Hoist the second-layer module so that the other end of the connecting steel cage II is inserted into the bottom cavity 1183 of the second-layer module; then inject grout 21 into the top cavity 1184 of the first-layer module and the bottom cavity 1183 of the second-layer module through the grouting hole 1191 on the top cavity 1184 of the first-layer module until the grout 21 overflows through the grout outlet hole 1192 on the bottom cavity 1183 of the second-layer module, then stop grouting;

[0150] Seal the grouting hole 1191 on the top cavity 1184 of the first-layer module and the grout outlet hole 1192 on the bottom cavity 1183 of the second-layer module to complete the vertical connection between the first-layer module and the second-layer module.

[0151] S8. At the splicing position of the adjacent sides of the top surface of the two steel pipe columns 111 in the second layer module, bevel welding is performed to form weld 31.

[0152] A steel plate 321 is placed at the splicing position of the adjacent sides of the top surface of the two long steel pipe beams 1121 / short steel pipe beams 1122 in the second layer module, and the steel plate 321 is welded to the two long steel pipe beams 1121 / short steel pipe beams 1122 by fillet weld 322.

[0153] S9. Based on the number of module layers, repeat steps S5 to S8.

[0154] Example 12:

[0155] The main structure of this embodiment is the same as any one of embodiments 1 to 11. Furthermore, the grouting material 21 comprises ordinary Portland cement (5%-20%), rapid-hardening high-iron sulfoaluminate cement (30%-50%), silica fume (2%-6%), quartz sand (30%-50%), and admixtures (3%-5%). The mass fraction of each component varies depending on the strength requirements. Grouting material 21 must possess early strength and low shrinkage properties; the specific strength needs to be determined based on design calculations.

[0156] Example 13:

[0157] The main structure of this embodiment is the same as any one of embodiments 1 to 12. Furthermore, a modular steel structure building and its vertical and horizontal connections include: standardized building modules 1 manufactured in a factory, vertical connection structures 2 between modules, and horizontal connection structures 3 between modules.

[0158] The construction method for this modular steel structure building and its vertical and horizontal connections is as follows:

[0159] First, standardized building modules 1 are manufactured in the factory;

[0160] The standardized building modules are then transported to the construction site, the first-floor modules are hoisted, and vertical connection structure 2 is used to vertically connect the first-floor modules to the foundation. Next, on top of the first-floor modules, horizontal connection structure 3 is used to horizontally connect the steel pipe columns, long steel pipe beams, and short steel pipe beams of the first-floor modules. Then, the second-floor modules are hoisted, and vertical connection structure 2 is used to vertically connect the second-floor modules to the first-floor modules. The hoisting of the upper modules is repeated until the project is completed.

[0161] Furthermore, the standardized building module 1 manufactured in the factory consists of a steel frame 11, lightweight wall panels 12 embedded in the steel frame, a concrete composite floor slab 13 located at the bottom of the steel frame, and lightweight strip panels 14 located at the top of the steel frame.

[0162] Furthermore, the steel frame 11 of the standardized building module 1, manufactured in the factory, consists of four rectangular steel pipe columns 111 located at the corners and eight rectangular steel pipe beams connected to both ends of the rectangular steel pipe columns 111. The upper and lower rectangular steel pipe beams on the long side of the steel frame 11 can be supplemented with vertical web members 113 and diagonal web members 114 of rectangular steel pipe cross-section to form a steel pipe truss, thereby increasing the overall rigidity of the module. The vertical web members 113, diagonal web members 114, rectangular steel pipe beams, and rectangular steel pipe columns 111 are all connected by welding.

[0163] The top of the rectangular steel pipe column 111 extends 10mm beyond the top surface of the upper rectangular steel pipe beam; similarly, the bottom of the rectangular steel pipe column 111 extends 10mm beyond the bottom surface of the lower rectangular steel pipe beam.

[0164] Furthermore, the four rectangular steel pipe columns 111 of the steel frame 11 and the eight rectangular steel pipe beams connected to both ends of the rectangular steel pipe columns 111 have the same cross-sectional width. The rectangular steel pipe columns 111 are selected with a rectangular cross-section, wherein the long side of the rectangular steel pipe column 111 is consistent with the long side of the module, and the short side of the rectangular steel pipe column 111 is consistent with the short side of the module, so as to meet the structural stress requirements of the module.

[0165] Furthermore, the lightweight wall panels 12 in the standardized building module 1 manufactured in the factory can be made of foamed concrete lightweight strips with self-insulating function or sintered silicon crystal hollow lightweight strips, which are convenient for installation in the factory using mechanical equipment.

[0166] When there are only two rectangular steel pipe beams on the side of the module, the lightweight wall panel 12 is embedded in the frame composed of the rectangular steel pipe column 111 and the rectangular steel pipe beam;

[0167] When the long side of the module is composed of a truss consisting of a rectangular steel pipe column 111, two upper and lower rectangular steel pipe beams, a vertical web member 113, and a diagonal web member 114, the cross-sectional width of the vertical web member 113 and the diagonal web member 114 can be only half the width of the rectangular steel pipe beam. At the same time, the vertical web member 113 and the diagonal web member 114 are aligned with the outer edge of the rectangular steel pipe beam. Then, the lightweight wall panel 12 is placed close to the inside of the vertical web member 113 and the diagonal web member 114, and the inside of the lightweight wall panel 12 is aligned with the inner edge of the rectangular steel pipe column 111 and the rectangular steel pipe beam to ensure that there are no protruding beams or columns inside the modular room.

[0168] Furthermore, after the steel frame 11 of the standardized building module 1 is manufactured in the factory, two rectangular steel pipe secondary beams 115 are welded at one-third of the length of the long side steel beam at the bottom of the module. The top elevation of the steel pipe secondary beams 115 is 100mm lower than that of the rectangular steel pipe beam at the bottom of the steel frame. Next, at the top elevation of the rectangular steel pipe secondary beams 115, along the inner side of the rectangular steel pipe beam at the bottom of the steel frame, L100x6 equilateral angle steel 116 is welded. On the top surface of the steel pipe secondary beams 115 and the equilateral angle steel 116, cylindrical head studs 117 are welded at certain intervals using a stud gun. The precast concrete composite bottom slab 131 is hoisted and the surface reinforcement 132 is laid, and the cast-in-place concrete surface layer 133 is then used to form a 100mm thick bottom concrete composite floor slab 13.

[0169] Furthermore, after the standardized building module 1's steel frame 11, lightweight wall panels 12 embedded within the steel frame, and concrete composite floor slab 13 located at the bottom of the steel frame are manufactured in the factory, L100x6 equilateral angle steel 116 is welded to the inner side of the top steel beam of the steel frame. The top elevation of the equilateral angle steel 116 is 100mm lower than the top rectangular steel pipe beam of the steel frame. Cylindrical head studs 117 are welded to the top surface of the equilateral angle steel 116 at certain intervals using a stud gun. Next, [the process continues...] An 80mm thick hollow lightweight strip 141 is laid on top of the angle steel as a top plate; foam plugs 142 are placed within a certain length of the holes at the ends of the hollow lightweight strip 141; a steel bar 143 is placed in the holes at the ends of the hollow lightweight strip 141, and a longitudinal steel bar 144 is placed between the bend of the steel bar 143 and the cylindrical head stud 117; finally, a 20mm thick mortar layer 145 is poured on the top surface of the hollow lightweight strip 141.

[0170] Furthermore, when the steel frame 11 of the standardized building module 1 is manufactured in the factory, inner partitions are welded inside the steel pipe column 111 at positions corresponding to the upper and lower surfaces of the rectangular steel pipe beam. The inner partitions II1182 corresponding to the upper surface of the lower rectangular steel pipe beam of the module and the lower surface of the upper rectangular steel pipe beam of the module have no openings, while rectangular holes are opened on the inner partitions I1181 corresponding to the lower surface of the lower rectangular steel pipe beam of the module and the upper surface of the upper rectangular steel pipe beam of the module. This forms a bottom cavity 1183 or a top cavity 1184 with one end open in the node area. Grouting holes 1191 and grout outlet holes 1192 are opened at appropriate positions on the wall panel of the rectangular steel pipe column 111.

[0171] Furthermore, after the standardized building module 1 is manufactured and its interior decoration is completed in the factory, module 1 needs to be transported to the construction site for installation, which involves the vertical connection structure 2 of the module. For the vertical connection structure of the first-floor module, the connecting steel cage 22 reserved on the top surface of the foundation needs to be inserted into the bottom cavity 1183 of the rectangular steel pipe column 111. Then, ultra-high performance grout 21 is injected into the bottom cavity 1183 of the rectangular steel pipe column 111 through the grouting hole 1191 until the grout 21 overflows from the grout outlet hole 1192. Then, the grout outlet hole 1192 is blocked, and then the grouting hole 1191 is blocked, thereby realizing the connection between module 1 and the foundation.

[0172] For the vertical connection structure between the upper modules 1, the connecting steel cage 22 is first inserted into the top cavity 1184 of the lower module steel column. Then, a 20mm high water-swellable rubber strip 23 is placed on the inner side of the top of the rectangular steel pipe column 111 and on the upper part of the partition plate I1181 in the top cavity 1184. Then, the upper module is hoisted and the connecting steel cage 22 is inserted into the bottom cavity 1183 of the upper module steel pipe column 111. After the upper and lower modules are hoisted into place, the ultra-high performance grout 21 is injected into the top cavity 1184 and bottom cavity 1183 of the rectangular steel pipe column 111 of the upper and lower modules through the grouting hole 1191 at the top of the lower module rectangular steel pipe column until the grout 21 overflows from the grout outlet hole 1192. Then, the grout outlet hole 1192 is blocked, and then the grouting hole 1191 is blocked, thereby realizing the vertical connection between the modules.

[0173] Furthermore, after the modules are hoisted and the vertical connection structure 2 is completed, the tops of the modules at the same elevation need to be horizontally connected. The horizontal connection structure 3 between modules includes the horizontal connection structure at the top of the square steel pipe column 111 and the horizontal connection structure of the square steel pipe beam between adjacent modules. The adjacent edges of the top of the square steel pipe column 111 are beveled to form weld 31, ensuring that the top of the steel pipe is formed as a whole.

[0174] The square steel tube beams between adjacent modules are welded to the top surface of the square steel tube beams with 20mm thick steel plates 321 at certain intervals using fillet welds 322, to ensure that modules 1 at the same elevation can transmit horizontal forces and coordinate deformation under horizontal seismic action.

Claims

1. A modular steel structure building that can be quickly fabricated and installed, characterized in that: It includes several standardized building modules (1), as well as vertical connection structures (2) and horizontal connection structures (3) connecting adjacent standardized building modules (1). The standardized building module (1) includes a steel frame (11), lightweight wall panels (12), composite concrete floor slabs (13), lightweight strip panels (14), and internal partitions; The steel frame (11) includes several steel pipe columns (111) as vertical members and several long steel pipe beams (1121) and short steel pipe beams (1122) as horizontal members; the upper and lower ends of the steel pipe columns (111) are connected to the long steel pipe beams (1121) and short steel pipe beams (1122) to form a cubic frame structure; the six square ring frames of the cube of the steel frame (11) are respectively referred to as the top surface, bottom surface, side I, side II, side III and side IV square ring frames; lightweight wall panels (12) are embedded in the square ring frames of side I, side II, side III and side IV; lightweight strips (14) and concrete composite floor slabs (13) are respectively laid in the top surface square ring frame and the bottom surface square ring frame. The steel pipe column (111) has open ends at both the top and bottom. An inner partition plate I (1181) is provided at the position where the open end of the steel pipe column (111) is flush with the upper surface of the top long steel pipe beam (1121) / short steel pipe beam (1122) and the lower surface of the bottom long steel pipe beam (1121). An inner partition II (1182) is provided at a position flush with the upper surface of the short steel pipe beam (1122); a hole is provided at the center of the inner partition I (1181), so that each of the upper and lower ends of the steel pipe column (111) forms a cavity enclosed by the pipe wall of the steel pipe column (111), the inner partition I (1181) and the inner partition II (1182); the two cavities are respectively referred to as the bottom cavity (1183) and the top cavity (1184). When the standardized building module (1) is used as the first-floor module, the bottom cavity (1183) of the first-floor module is provided with grouting holes (1191) and grout outlet holes (1192) that communicate with the bottom cavity (1183) at intervals, and are located at the bottom and top of the bottom cavity (1183) respectively; the bottom cavity (1184) of the first-floor module is provided with grouting holes (1191) on the bottom wall of the top cavity (1184). When the standardized building module (1) is used as a non-first-floor module, a grout outlet (1192) is provided on the top pipe wall of the bottom cavity (1183) of the non-first-floor module, and a grouting hole (1191) is provided on the bottom pipe wall of the top cavity (1184) of the non-first-floor module. The vertical connection structure (2) includes grout (21) and connecting steel cage (22); The standardized building modules (1) are connected to the foundation and adjacent standardized building modules (1) through vertical connection structure (2); the standardized building modules (1) on the same floor are connected sequentially through horizontal connection structure (3).

2. The modular steel structure building that can be quickly fabricated and installed according to claim 1, characterized in that: The two ends of the steel pipe column (111) extend 10mm beyond the top surface of the top square annular frame and the bottom surface of the bottom square annular frame, respectively.

3. A modular steel structure building that can be quickly fabricated and installed according to claim 1, characterized in that: The steel pipe column (111), the long steel pipe beam (1121), and the short steel pipe beam (1122) are all rectangular steel pipes; the side length of the steel pipe column (111) connected to the long steel pipe beam (1121) on the cross section is denoted as side length a, and the side length of the steel pipe column (111) connected to the short steel pipe beam (1122) on the cross section is denoted as side length b; The length of the side length a is the same as the cross-sectional width of the long steel pipe beam (1121); The length of the side b is greater than the cross-sectional width of the short steel pipe beam (1122); The cross-sectional width of the long steel pipe beam (1121) is the same as that of the steel pipe beam (1122).

4. A modular steel structure building that can be quickly fabricated and installed according to claim 1, characterized in that: Side I and side III are arranged opposite to each other, and the square ring frame formed by side I and side III is enclosed by two steel pipe columns (111) and two short steel pipe beams (1122). Side II and side IV are arranged opposite to each other. The square ring frame formed by side II and side IV is composed of two steel pipe columns (111) and two long steel pipe beams (1121). Vertical web members (113) and diagonal web members (114) are also provided inside the square ring frame of side II and side IV. A number of vertical web members (113) are arranged at intervals, and the two ends of each vertical web member (113) are respectively vertically arranged on two long steel pipe beams (1121). A number of diagonal web members (114) are arranged at an angle, and together with the vertical web members (113), steel pipe columns (111) and long steel pipe beams (1121), they form a truss structure. The vertical web members (113) and the diagonal web members (114) have the same cross-sectional width, which is half the cross-sectional width of the long steel pipe beam (1121). The outer edges of the vertical web members (113) and the diagonal web members (114) are aligned with the outer edges of the steel pipe column (111) and the long steel pipe beam (1121); the outer edges refer to the side away from the interior of the steel frame (11).

5. A modular steel structure building that can be quickly fabricated and installed according to claim 4, characterized in that: The lightweight wall panel (12) is a foamed concrete lightweight strip panel or a sintered silicon crystal hollow lightweight strip panel. When the lightweight wall panel (12) is assembled on side I and side III, it is referred to as lightweight wall panel I. The lightweight wall panel I is installed in the square ring frame formed by side I and side III. When the lightweight wall panel (12) is assembled on side II and side IV, it is referred to as lightweight wall panel II. The lightweight wall panel II is installed on side II and side IV, and one side of the lightweight wall panel II is in contact with the inner edge of the vertical web member (113) and the diagonal web member (114), while the other side faces the inside of the steel frame (11).

6. A modular steel structure building that can be quickly fabricated and installed according to claim 1, characterized in that: The square ring frame formed by the bottom surface of the steel frame (11) is enclosed by two long steel pipe beams (1121) and two short steel pipe beams (1122). The long steel pipe beam (1121) and the two short steel pipe beams (1122) have the same height; The steel frame (11) also includes secondary beams (115), equilateral angle steel (116), and cylindrical head studs (117). The bottom surface is provided with several secondary crossbeams (115) at intervals. The two ends of each secondary crossbeam (115) are respectively connected to two long steel pipe beams (1121), and the setting direction of the secondary crossbeams (115) is parallel to the setting direction of the short steel pipe beams (1122). The height of the secondary beam (115) is less than the height of the long steel pipe beam (1121) and the short steel pipe beam (1122), and the top elevation of the secondary beam (115) is less than the top elevation of the long steel pipe beam (1121) and the short steel pipe beam (1122); At the top elevation of the secondary beam (115), equilateral angle steel (116) is welded along the inner ring of the bottom square annular frame. One side of the bottom equilateral angle steel (116) is attached to the inner ring of the bottom square annular frame, and the top surface of the other side of the angle steel is flush with the top surface of the secondary beam (115), which is called angle steel leg I. Several cylindrical head studs (117) are welded at intervals on the top surfaces of angle steel leg I and secondary beam (115). The concrete composite floor slab (13) includes a precast concrete composite bottom slab (131) that overlaps the top surface of the angle steel leg I and the secondary beam (115) and a cast-in-place concrete surface layer (133) located on the precast concrete composite bottom slab (131). The precast concrete composite base slab (131) is pre-embedded with truss reinforcement bars. The truss reinforcement bars are partially located in the precast concrete composite base slab (131) and partially extend out of the precast concrete composite base slab (131). The top surface of the extended end is covered with surface reinforcement bars (132). The portion of the truss reinforcement extending out of the precast concrete composite bottom slab (131) and the surface reinforcement (132) are embedded in the cast-in-place concrete surface layer (133).

7. A modular steel structure building that can be quickly fabricated and installed according to claim 1, characterized in that: The square ring frame formed by the top surface of the steel frame (11) is composed of two long steel pipe beams (1121) and two short steel pipe beams (1122). The long steel pipe beam (1121) and the two short steel pipe beams (1122) have the same height; The steel frame (11) also includes equilateral angle steel (116) and cylindrical head studs (117). An equilateral angle steel (116) is welded along the inner ring of the top square annular frame. One side of the equilateral angle steel (116) is attached to the inner ring of the top square annular frame, and several cylindrical head studs (117) are welded at intervals on the other side of the angle steel, which is called angle steel leg II. The lightweight strip (14) is laid on the top surface of the angle steel leg II, including the lightweight strip (141), foam plug (142), steel bar (143), longitudinal steel bar (144) and mortar layer (145). The hollow lightweight strip (141) overlaps the top surface of the angle steel member II. The hollow lightweight strip (141) has a through hole inside, and one end of the through hole that communicates with the outside faces the long steel pipe beam (1121). A foam plug (142) is placed in the through hole of the hollow lightweight strip (141) at each end near the through hole; the reinforcing bar (143) is a bent reinforcing bar, including a reinforcing bar body and a bent section. The reinforcing bar body extends into the through hole and points towards the foam plug (142), while the bent section is set upwards; the longitudinal reinforcing bar (144) is set between the bent section and the top cylindrical head stud (117), and the setting direction is perpendicular to the reinforcing bar (143). Mortar is poured between the top square ring frame, angle steel limb II and hollow lightweight strip (141) to form a mortar layer (145). The top elevation of the mortar layer (145) is the same as the top elevation of the top square ring frame.

8. A modular steel structure building that can be quickly fabricated and installed according to claim 1, characterized in that: The vertical connection structure (2) also includes a rubber strip (23); The foundation is pre-embedded with a connecting steel cage (22). When the standardized building module (1) is connected to the foundation as the first-floor module, the pre-embedded connecting steel cage (22) extends into the bottom cavity (1183) of the first-floor module through the hole on the inner partition plate I (1181), and grout (21) is injected through the grouting hole (1191) on the pipe wall of the bottom cavity (1183) of the first-floor module. Grouting stops when the grout (21) overflows through the grout outlet hole (1192) on the pipe wall of the bottom cavity (1183) of the first-floor module, and the grouting hole (1191) and grout outlet hole (1192) on the bottom cavity (1183) of the first-floor module are blocked, so as to realize the vertical connection between the first-floor module and the foundation. When connecting adjacent standardized building modules (1), rubber strips (23) are placed inside the steel pipe column (111) of the lower module and above the inner partition I (1181) of the lower module. The two ends of the connecting steel cage (22) are inserted into the top cavity (1184) of the lower module and the bottom cavity (1183) of the upper module through the holes on the inner partition I (1181), and grout (21) is injected through the grouting hole (1191) on the pipe wall of the top cavity (1184) of the lower module until the grout (21) overflows through the grout outlet hole (1192) on the pipe wall of the bottom cavity (1183) of the upper module. The grouting is stopped when the grouting hole (1191) on the pipe wall of the top cavity (1184) of the lower module and the grout outlet hole (1192) on the pipe wall of the bottom cavity (1183) of the upper module are blocked, and the vertical connection of the adjacent standardized building modules (1) is completed.

9. A modular steel structure building that can be quickly fabricated and installed according to claim 1, characterized in that: The horizontal connection structure (3) includes connection structure I of steel pipe columns (111) between adjacent standardized building modules (1) and connection structure II of long steel pipe beams (1121) and short steel pipe beams (1122) between adjacent standardized building modules (1); Connection Structure I: When adjacent standardized building modules (1) are stacked, the steel pipe columns (111) of different standardized building modules (1) are spliced ​​together, and bevel welding is performed at the splicing position of the adjacent sides of the top of the two steel pipe columns (111) to form a weld (31). Connection Structure II: When adjacent standardized building modules (1) are stacked, the long steel pipe beams (1121) / short steel pipe beams (1122) of different standardized building modules (1) are spliced ​​together, and several steel plates (321) are placed at intervals on the top surface of the two long steel pipe beams (1121) / short steel pipe beams (1122), and the steel plates (321) are welded to the two long steel pipe beams (1121) / short steel pipe beams (1122) by fillet welds (322).

10. A method for vertical and horizontal connection of a modular steel structure building capable of rapid fabrication and installation according to any one of claims 1 to 9, characterized in that, Includes the following steps: S1. Standardized building modules (1) are manufactured in the factory, and steel cages (22) and steel plates (321) are connected. The manufactured standardized building modules (1), steel cages (22) and steel plates (321) are transported to the construction site. The standardized building module (1) includes a steel frame (11), vertical web members (113), diagonal web members (114), secondary crossbeams (115), internal partitions, lightweight wall panels (12), composite concrete floor slabs (13) and lightweight strip panels (14), and each standardized building module (1) has a grouting hole (1191) and / or a grout outlet hole (1192) at the corresponding position. S2. Pre-embed a connecting steel cage (22) in the foundation, denoted as connecting steel cage I; S3. Hoist the first-floor module so that the connecting steel cage I extends into the bottom cavity (1183) of the first-floor module; then inject grout (21) into the bottom cavity (1183) through the grouting hole (1191) on the bottom cavity (1183) of the first-floor module until the grout (21) overflows through the grout outlet hole (1192) on the bottom cavity (1183) of the first-floor module, and then stop grouting; Seal the grouting hole (1191) and grout outlet hole (1192) on the bottom cavity (1183) of the first-floor module to complete the vertical connection between the foundation and the first-floor module; S4. At the splicing position of the adjacent sides of the top surface of the first-floor module and the two steel pipe columns (111), bevel welding is performed to form a weld (31). A steel plate (321) is placed at the splicing position of the adjacent sides of the top surface of the first-floor module and the two long steel pipe beams (1121) / short steel pipe beams (1122). The steel plate (321) is welded to the two long steel pipe beams (1121) / short steel pipe beams (1122) using fillet welds (322). S5. Place a rubber strip (23) on the inner partition I (1181) at the top of the first-floor module. S6. Insert one end of the connecting steel cage (22) into the top cavity (1184) of the first-floor module, and denote it as connecting steel cage II; S7. Hoist the second-layer module so that the other end of the connecting steel cage II is inserted into the bottom cavity (1183) of the second-layer module; then inject grout (21) into the top cavity (1184) of the first-layer module and the bottom cavity (1183) of the second-layer module through the grouting hole (1191) on the top cavity (1184) of the first-layer module until the grout (21) overflows through the grout outlet hole (1192) on the bottom cavity (1183) of the second-layer module, and stop grouting. Seal the grouting hole (1191) on the top cavity (1184) of the first-layer module and the grout outlet hole (1192) on the bottom cavity (1183) of the second-layer module to complete the vertical connection between the first-layer module and the second-layer module; S8. At the splicing position of the adjacent sides of the top surface of the second layer module and the two steel pipe columns (111), bevel welding is performed to form a weld (31). A steel plate (321) is placed at the splicing position of the adjacent sides of the top surface of the two long steel pipe beams (1121) / short steel pipe beams (1122) in the second layer module, and the steel plate (321) is welded to the two long steel pipe beams (1121) / short steel pipe beams (1122) by fillet weld (322); S9. Based on the number of module layers, repeat steps S5 to S8.

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