Foldable module building steel structure unit and module building steel structure

Abstract

The invention relates to a foldable module building steel structure unit and a module building steel structure.The foldable module building steel structure unit comprises a square frame body and a plurality of module unit folding columns, and each module unit folding column comprises an in-column rotating structure arranged in the middle of the module unit folding column; the short rotating columns are symmetrically arranged at the two ends of the in-column rotating structure, the long rotating columns are symmetrically arranged at the two ends of the module unit folding columns, and a rotating hinge structure is adopted between every two module unit folding columns; the multiple wallboards are arranged on the side faces of the square frame body respectively, each wallboard can be turned and folded inwards relative to the square frame body, and the folded wallboards are arranged at the bottom of the square frame body in a stacked mode. According to the invention, the space size of the module units in the transportation process is compressed, the transportation capacity is improved, the limitation of enclosure plates is broken through, a completely open construction space is created for the connection construction of the module units, the connection quality is ensured, and the reliable connection of the module units at corners and component positions is realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of building engineering, and in particular relates to a foldable modular building steel structure unit, and a modular building steel structure in which unit corners, unit beams and unit columns are all connected. Background Art

[0002] Modular building steel structure is a highly assembled building structure. Unlike conventional frame structures that use beams and columns as basic units to assemble an overall structure, modular building steel structure uses modular units as basic units to assemble an overall structure. Modular units are independent building structural units, including structural frames and enclosure systems. Modular units are prefabricated in factories and transported to construction sites, where they are installed and assembled into an overall structure using construction equipment. Modular building steel structure has the characteristics of standardized design, factory-based production, and assembled construction. It can ensure the processing quality of components, greatly improve construction speed, and has good social and economic benefits. It meets the country's requirements for the development of prefabricated structures. It has been applied to a variety of building types such as apartments, hotels, schools, and hospitals, and can play a huge role in responding to emergencies.

[0003] Since the module units have been manufactured in the factory, when they are transported to the construction site, the module units have a complete steel frame structure and a complete enclosure system including wall panels, roof panels and floors. However, the enclosure system will cause the construction space to be continuously reduced during the connection between the module units, especially when the four horizontally adjacent module units are connected, there is no construction space at all when the last module unit is connected. In addition, the limited construction space also makes it difficult to connect the module units. As a result, in the existing system, the module units are only connected at the corners, and there is almost no connection between the adjacent components of the module units. They are all in an independent working state and fail to form a collaborative working mechanism, which leads to weak structural integrity, low load-bearing efficiency, and large steel consumption. There are currently two main solutions to the above problems. One solution is to partially destroy the enclosure panels when connecting the module units to create a certain construction space. The other solution is to develop self-locking connection technology to perform non-destructive connection without damaging the enclosure panels.

[0004] However, although the first solution has the advantages of simple connection structure between module units, easy construction, reliable force transmission and strong bearing capacity, it has the disadvantage of needing to destroy the enclosure panels, which is somewhat inconsistent with the concept of prefabricated construction; although the second solution has the advantages of no need to destroy the enclosure panels and fast construction, it has the disadvantages of complex connection structure between module units, high construction precision requirements and relatively low bearing capacity.

[0005] Therefore, developing a new type of modular building steel structure unit that can break through the limitations of the enclosure panels and provide sufficient connection construction space, so that all modular units can be connected at the corners and component positions, thereby improving the integrity and bearing capacity of the modular building steel structure and promoting the modular building steel structure has become a key technical bottleneck. Summary of the invention

[0006] In view of the deficiencies existing in the related art, the present invention provides a foldable modular building steel structure unit and a modular building steel structure, which can, by folding the main structure and the enclosure system, on the one hand, compress the spatial dimensions of the modular unit during transportation and improve the transportation capacity; on the other hand, break through the limitations of the enclosure plate materials, create a completely open construction space for the connection construction between the modular units, ensure the quality of the connection, and achieve reliable connection between the modular units at the corners and component positions, so as to solve the technical problems of limited construction space for connection between modular units in the existing modular building steel structure system, great difficulty in connecting between modular units, modular units are connected only at corners, there is almost no connection between adjacent components of the modular units, the structural integrity is weak, the load-bearing efficiency is low, and the amount of steel used is large.

[0007] The present invention provides a foldable modular building steel structure unit, including a square frame body, including a plurality of modular unit folding columns, each modular unit folding column including a column-in-column rotating structure arranged in the middle of the modular unit folding column, short rotating columns symmetrically arranged at both ends of the column-in-column rotating structure, and long rotating columns symmetrically arranged at both ends of the modular unit folding column, and a rotating hinge structure is adopted between the columns of each modular unit folding column; a plurality of wall panels are respectively arranged on the side of the square frame body, each wall panel can be turned inwardly relative to the square frame body, and each wall panel is stacked and arranged at the bottom of the square frame body after folding. The present invention can greatly compress the spatial size of the modular unit during transportation through the folding structure of the main structure, improve the transportation capacity, and realize a completely open construction space during the connection construction of the modular unit.

[0008] In some embodiments, the rotating structure in the column includes a solid steel block; two pairs of column ear plates are respectively arranged at both ends of the solid steel block, each pair of column ear plates are respectively provided with corresponding first pin shaft holes, and multiple first pairs of through bolt holes are dispersedly arranged around the first pin shaft holes; two column shear plates are respectively arranged between each pair of column ear plates.

[0009] In some embodiments, each short rotating column includes a box-type short column; two short column end sealing plates are respectively arranged at both ends of the box-type short column; two pairs of short column ear plates are respectively arranged at one end of the short column end sealing plate away from the box-type short column, the short column ear plate includes a first short column ear plate and a second short column ear plate, and the first short column ear plate matches the column middle ear plate, the first short column ear plate is provided with a second pin shaft hole matching the first pin shaft hole and a second pair of through bolt holes matching the first pair of through bolt holes, the second short column ear plate is provided with a third pin shaft hole and a plurality of third pairs of through bolt holes are dispersedly arranged around the third pin shaft hole; the short column shear plate is arranged between the two second short column ear plates.

[0010] In some embodiments, each long rotating column includes a box-type long column; a long column end sealing plate, which is arranged at one end of the box-type long column; a pair of long column ear plates, which are arranged at the end of the long column end sealing plate away from the box-type long column, the long column ear plate matches the second short column ear plate, and the long column ear plate is provided with a fourth pin shaft hole matching the third pin shaft hole and a fourth pair of through bolt holes matching the third pair of through bolt holes.

[0011] In some of the embodiments, the square frame body also includes two module unit long side top beams, which are symmetrically arranged at the top end of the square frame body, and each module unit long side top beam includes a long side box-type top beam and a first limiting component arranged at the bottom end of the long side box-type top beam; two module unit short side top beams, which are symmetrically arranged at the top end of the square frame body, and the two ends of each module unit short side top beam are respectively connected to one end of the module unit long side top beam, and each module unit short side top beam includes a short side box-type top beam and a second limiting component arranged at the bottom end of the short side box-type top beam; the first module unit long side bottom beam is arranged at the bottom end of the square frame body and is arranged opposite to one of the module unit long side top beams; the second module unit long side bottom beam is arranged at the other side of the bottom end of the square frame body corresponding to the first module unit long side bottom beam; the two module unit short side bottom beams are symmetrically arranged at the bottom end of the square frame body and are arranged opposite to the module unit short side top beam.

[0012] In some embodiments, the long side bottom beam of the first module unit includes a first long side box-type bottom beam; a first unequal-leg angle steel, arranged at the top end of the first long side box-type bottom beam; two pairs of first long side bottom beam ear plates, respectively arranged at the two ends of the long limb side of the first unequal-leg angle steel; and two first short steel round tubes, respectively arranged above each pair of first long side bottom beam ear plates.

[0013] In some of the embodiments, each module unit short side bottom beam includes a short side box-type bottom beam; two pairs of short side bottom beam ear plates are respectively arranged at the two ends of one side of the short side box-type bottom beam; and two or three short steel round tubes are respectively arranged above each pair of short side bottom beam ear plates.

[0014] In some embodiments, the wall panel includes a first module unit long side wall panel, which is arranged between the module unit long side top beam and the first module unit long side bottom beam, the first module unit long side wall panel includes a first long side concrete wall, a first long side long steel round tube arranged at the bottom end of the first long side concrete wall, a plurality of pairs of first long side ear plates arranged at intervals on the first long side long steel round tube, and a third limiting component arranged at the top end of the first long side concrete wall and matching with the first limiting component; the second module unit long side wall panel is arranged between the module unit long side top beam and the second Between the long side bottom beams of the module unit, the long side wall panel of the second module unit includes a second long side concrete wall, and the height of the second long side concrete wall is shorter than that of the first long side concrete wall; the short side wall panel of the module unit is arranged between the module unit field side top beam and the short side bottom beam of the module unit, and the short side wall panel of the module unit includes a short side concrete wall, a short side long steel round tube arranged at the bottom end of the short side concrete wall, a plurality of pairs of short side ear plates arranged at intervals on the short side long steel round tube, and a fourth limiting component arranged at the top end of the short side concrete wall and matching with the second limiting component.

[0015] In some embodiments, the first long side long steel circular tube is connected to the long side bottom beam of the first module unit through a first rotating shaft rod, the first long side long steel circular tube is connected to the long side bottom beam of the second module unit through a second rotating shaft rod, and the short side long steel circular tube is connected to the short side bottom beam of the module unit through a third rotating shaft rod, wherein the heights of the first rotating shaft rod, the second rotating shaft rod, and the third rotating shaft rod are not on the same horizontal line.

[0016] In addition, the present invention also provides a modular building steel structure, including the above-mentioned foldable modular building steel structure unit.

[0017] Based on the above technical solution, compared with the prior art, the beneficial effects of the present invention are:

[0018] (1) The directional frame body of the foldable modular building steel structure unit of the present invention includes a plurality of modular unit folding columns, and a plurality of wall panels are arranged to be flipped and folded inward relative to the square frame body. Through the folding structure of the main structure, the spatial dimensions of the modular unit during transportation can be greatly compressed, the transportation capacity can be improved, and a strong guarantee can be provided for the construction speed of the modular building. In addition, the problem that the construction space is continuously reduced or even disappears during the connection of the modular units can be avoided, and a completely open construction space can be realized. The present invention can realize a completely open construction space during the splicing of the modular units, and can avoid the problem that the modular units are connected only at the corner positions and there is almost no connection between the adjacent components of the modular units, thereby realizing a reliable connection between the modular units and enhancing the integrity and bearing capacity of the structure.

[0019] (2) The folding columns of the foldable modular building steel structure unit of the present invention are connected by two pairs of ear plates. Since the internal force of the two ear plates forms a force couple, it can effectively resist the bending moment of the component; a shear plate is arranged between the pair of ear plates located on the inner side, which can improve the out-of-plane stability of the two ear plates and transmit the shear force; the pin shaft and the through bolts are respectively fixed through the pin shaft holes arranged on the ear plates and the multiple through bolt holes dispersedly arranged around the pin shaft holes. Since the through bolts are dispersedly arranged around the central pin shaft, their shear forces form a resultant force couple, which can effectively resist the external bending moment; the above structures cooperate with each other to a large extent to ensure that the modular unit folding column has good bending bearing capacity in the two main axis directions, and can ensure that the unfolded modular unit folding column has a strong bending resistance.

[0020] (3) When the foldable modular building steel structure unit wall panels of the present invention are connected to the corresponding bottom beams, they are connected through corresponding pivot rods, and the pivot rods are not at the same horizontal height, which can ensure that the four wall panels remain flat and stacked in the folded state. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 It is a schematic diagram of the steel structure unit structure of a foldable modular building;

[0023] Figure 2 This is an exploded view of the steel structure unit structure of the foldable modular building;

[0024] Figure 3 This is the exploded view of the folded column structure of the module unit;

[0025] Figure 4 This is the exploded view of the rotating structure in the column;

[0026] Figure 5 This is the exploded diagram of the short rotating column structure;

[0027] Figure 6 This is the exploded diagram of the long rotating column structure;

[0028] Figure 7 It is a schematic diagram of the long side top beam structure of the module unit;

[0029] Figure 8 It is a schematic diagram of the short side top beam structure of the module unit;

[0030] Fig. 9 This is a schematic diagram of the long side bottom beam structure of the first module unit;

[0031] Fig.10This is the exploded view of the long side bottom beam structure of the first module unit;

[0032] Fig.11 It is a schematic diagram of the short side bottom beam structure of the module unit;

[0033] Fig.12 This is a schematic diagram of the long side wall structure of the first module unit;

[0034] Fig.13 This is the exploded view of the long side wall structure of the first module unit;

[0035] Fig.14 It is a schematic diagram of the short side wall panel structure of the module unit;

[0036] Fig.15 This is the exploded view of the short side wall structure of the module unit;

[0037] Fig.16 It is a schematic diagram of the folded state of the steel structure unit of the foldable modular building;

[0038] Fig.17 The unfolding process of the main structure of the steel structure unit of the foldable modular building;

[0039] Fig.18 The main structure of the foldable modular building steel structure unit is unfolded and completed;

[0040] Fig.19 The unfolding process of the second long side wall panel of the foldable modular building steel structure unit;

[0041] Fig. 20 The second long side wall panel of the foldable modular building steel structure unit is unfolded and completed;

[0042] Fig.21 The unfolding process of the first long side wall panel of the foldable modular building steel structure unit;

[0043] Fig. 22 The first long side wall panel of the foldable modular building steel structure unit is unfolded and completed;

[0044] Fig.23 The unfolding process of the short side wall panels of the foldable modular building steel structure unit;

[0045] In the figure:

[0046] 1. Square frame body, 11. Modular unit folding column, 111. Rotating structure in column, 1111. Solid steel block, 1112. Ear plate in column, 1113. Shear plate in column, 112. Short rotating column, 1121. Box-type short column, 1122. Short column end sealing plate, 1123. Short column ear plate, 1124. Short column shear plate, 113. Long rotating column, 1131. Box-type long column, 1132. Long column end sealing plate, 1133. Long column ear plate, 114. Pin, 1141. First pin hole, 1142. Second pin hole, 1143. Third pin hole, 1144. Fourth pin hole, 1145 Pin sealing plate, 115. Through bolt, 1151. First through bolt hole, 1152. Second through bolt hole, 1153, the third pair of through-bolt holes, 1154, the fourth pair of through-bolt holes, 12, the long side top beam of the module unit, 121, the long side box-type top beam, 122, the long side connecting steel plate, 1221, the first bolt hole, 13, the short side top beam of the module unit, 131, the short side box-type top beam, 132, the short side connecting steel plate, 1321, the second bolt hole, 14, the long side bottom beam of the first module unit, 141, the first long side box-type bottom beam, 142, the first unequal-leg angle steel, 143, the first triangular stiffening rib, 144, the first long side bottom beam ear plate, 145, the first short steel round tube, 15, the second module unit long side bottom beam, 16, the short side bottom beam of the module unit, 161, the short side box-type bottom beam, 162, the short side bottom beam ear plate, 163, the third short steel round tube;

[0047] 2. Wall panel, 21. Long side wall panel of first module unit, 211. First long side concrete wall, 212. Long steel round tube of first long side, 213. Ear plate of first long side, 214. Embedded part of first long side steel plate, 215. First long side connecting steel plate, 2151. Third bolt hole, 216. Embedded part of first long side bending, 217. First long side channel steel, 22. Long side wall panel of second module unit, 23. Short side wall panel of module unit, 231. Short side concrete wall, 232. Long steel round tube of short side, 233. Ear plate of short side, 234. Embedded part of short side steel plate, 235. Short side connecting steel plate, 2351. Fifth bolt hole, 236. Embedded part of short side bending, 237. Short side channel steel;

[0048] 3. Top plate; 4. Floor. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0050] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. The terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features.

[0051] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] As attached Figure 1 and Figure 2 As shown, in an exemplary embodiment of the foldable modular building steel structure unit of the present invention, the foldable modular building steel structure unit includes a square frame body 1, which is a foldable structure; a plurality of wall panels 2, which are respectively arranged on the sides of the square frame body, and each wall panel can be turned and folded inward relative to the square frame body; a top plate 3, which is arranged at the top end of the square frame body 1; and a floor 4, which is arranged at the bottom end of the square frame body 1. The present invention can greatly compress the space size of the module unit during transportation through the folding structure of the main structure, improve the transportation capacity, and realize a completely open construction space during the connection construction of the module unit.

[0053] Among them, the square frame body 1 includes a plurality of module unit folding columns 11; two module unit long side top beams 12 are symmetrically arranged at the top of the square frame body 1; two module unit short side top beams 13 are symmetrically arranged at the top of the square frame body 1, and the two ends of each module unit short side top beam 13 are respectively connected to one end of the two module unit long side top beams 12; the first module unit long side bottom beam 14 is arranged at the bottom end of the square frame body 1 and is arranged opposite to one of the module unit long side top beams 12; the second module unit long side bottom beam 15 is arranged at the other side of the bottom end of the square frame body 1 corresponding to the first module unit long side bottom beam 14; the two module unit short side bottom beams 16 are symmetrically arranged at the bottom end of the square frame body 1 and are arranged opposite to the module unit short side top beam 13.

[0054] like Figure 3 As shown, each module unit folding column 11 adopts a rotating hinge structure between columns, and each module unit folding column 11 includes a column rotating structure 111 arranged in the middle of the module unit folding column 11, short rotating columns 112 symmetrically arranged at both ends of the column rotating structure 111, and long rotating columns 113 symmetrically arranged at both ends of the module unit folding column 11. Each module unit folding column 11 adopts a rotating hinge structure between columns. Figure 4 As shown, the column rotating structure 111 includes a solid steel block 1111; two pairs of column middle ear plates 1112, respectively arranged at the two ends of the solid steel block 1111, one end of the column middle ear plate 1112 is welded to the solid steel block 1111, each pair of column middle ear plates 1112 is respectively provided with a corresponding first pin hole 1141 and a plurality of first pairs of through bolt holes 1151 are dispersedly arranged around the first pin hole 1141; two column middle shear plates 1113 are respectively arranged between each pair of column middle ear plates 1112, and each column middle shear plate 1113 is welded to the adjacent column middle ear plate 1112. Figure 5 As shown, two short rotating columns 112 are respectively arranged at the two ends of the rotating structure 111 in the column, and each short rotating column 112 includes a box-type short column 1121; two short column end sealing plates 1122 are respectively arranged at the two ends of the box-type short column 1121, and the short column end sealing plates 1122 are welded to the box-type short column 1121; two pairs of short column ear plates 1123 are respectively arranged at one end of the short column end sealing plate 1122 away from the box-type short column 1121, and one end of the short column ear plate 1123 is welded to the short column end sealing plate 1122, the short column ear plate 1123 includes a first short column ear plate connected to the rotating structure 111 in the column and a second short column ear plate close to the end of the module unit folding column 11, and each pair of short column ear plates 1123 are respectively provided with corresponding pin holes and a plurality of through bolt holes are dispersedly provided around the corresponding pin holes, wherein the second pin hole 1142 and the second through bolt hole 1152 provided on the first short column ear plate are respectively matched with the first pin hole 1141 and the first through bolt hole 1151 provided on the column middle ear plate, and the short rotating column 112 is fixed to the column middle rotating structure 111 through the pin 114 and the through bolt 115; the second short column ear plate is provided with a third pin hole 1143 and a plurality of third through bolt holes 1153 are dispersedly provided around the third pin hole 1143; the short column shear plate 1124 is provided between the second short column ear plates, and the short column shear plate 1124 is welded and connected to the second short column ear plates. Figure 6As shown, the long rotating column 113 is arranged at one end of the short rotating column 112 away from the rotating structure 111 in the column, and each long rotating column 113 includes a box-shaped long column 1131; a long column end sealing plate 1132, which is arranged at one end of the box-shaped long column 1131, and the long column end sealing plate 1132 is welded to the box-shaped long column 1131; a pair of long column ear plates 1133, which are arranged at one end of the long column end sealing plate 1132 away from the box-shaped long column 1131, and one end of the long column ear plate 1133 is connected to the long column end sealing plate 1131 32 welding connection, a corresponding fourth pin hole 1144 is provided on the long column ear plate 1133, and a plurality of fourth pairs of through bolt holes 1154 are dispersedly arranged around the fourth pin hole 1144, the fourth pin hole 1144 and the fourth pair of through bolt holes 1154 provided on the long column ear plate 1133 are matched with the third pin hole 1143 and the third pair of through bolt holes 1153 provided on the second short column ear plate, respectively, and the long rotating column 113 is fixed to the short rotating column 112 by the pin 114 and the through bolt 115. When the module unit folding column 11 is installed, as shown in FIG. Figure 3 As shown, the pin holes at corresponding positions on the long rotating column 113, the short rotating column 112, and the rotating structure 111 in the column are aligned respectively, and then the pin 114 is passed through the pin hole, and the pin sealing plate 1145 is welded to the other side of the pin 114, and finally the through bolt 115 is passed through the through bolt hole and the bolt cap is tightened to complete the installation of the module unit folding column 11. The module unit folding column 11 of the present invention is connected between the columns through two pairs of ear plates. Since the internal force of the two ear plates forms a couple, it can effectively resist the bending moment of the component; the shear plate arranged between the pair of ear plates located on the inner side can improve the out-of-plane stability of the two ear plates and transmit the shear force; since the through bolts are dispersedly arranged around the central pin, their shear force forms a resultant couple, which can effectively resist the external bending moment; the above structures cooperate with each other to ensure that the module unit folding column 11 has good bending bearing capacity in the two main axis directions to a large extent, and can ensure that the unfolded module unit folding column 11 has a strong bending resistance.

[0055] like Figure 7 As shown, each module unit long side top beam 12 includes a long side box-type top beam 121 and a first limiting component arranged at the bottom end of the long side box-type top beam. Preferably, the first limiting component is a plurality of long side connecting steel plates 122 spaced apart at the bottom end of the long side box-type top beam 121, and each long side connecting steel plate 122 is provided with a first bolt hole 1221. When connecting, the long side connecting steel plate 122 is welded to the bottom end of the long side box-type top beam 121 to complete the installation of the module unit long side top beam 12.

[0056] like Figure 8As shown, each module unit short side top beam 13 includes a short side box-type top beam 131 and a second limiting component arranged at the bottom end of the short side box-type top beam. Preferably, the second limiting component is a plurality of short side connecting steel plates 132 spaced apart at the bottom end of the short side box-type top beam 131, and each short side connecting steel plate 132 is provided with a second bolt hole 1321. When connecting, the short side connecting steel plate 132 is welded to the bottom end of the short side box-type top beam 131 to complete the installation of the module unit short side top beam 13.

[0057] like Fig. 9 and Fig.10 As shown, the first module unit long side bottom beam 14 includes a first long side box-type bottom beam 141; a first unequal-leg angle steel 142, which is arranged at the top end of the first long side box-type bottom beam 141, and the short-leg side of the first unequal-leg angle steel 142 is welded to the top end of the first long side box-type bottom beam 141; a plurality of first triangular stiffening ribs 143, which are arranged at intervals on the first unequal-leg angle steel 142; two pairs of first long side bottom beam ear plates 144, which are respectively arranged at both ends of the long-leg side of the first unequal-leg angle steel 142; and two first short steel round tubes 145, which are respectively arranged on each pair of first long side bottom beam ear plates 144. During connection, first weld the short limb side of the first unequal-limb angle steel 142 to the top end of the first long-side box-type bottom beam 141, then weld the first triangular stiffening rib 143 to the first unequal-limb angle steel 142, and then weld the first long-side bottom beam ear plate 144 to the two ends of the long limb side of the first unequal-limb angle steel 142, and then weld the first short steel round tube 145 to the semicircular welding port reserved in the first long-side bottom beam ear plate 144, and finally pour concrete around the first unequal-limb angle steel 142 to complete the installation of the long-side bottom beam 14 of the first module unit.

[0058] The components of the second module unit long side bottom beam 15 are similar to those of the first module unit long side bottom beam 14, and the second module unit long side bottom beam 15 includes a second long side box-type bottom beam; a second unequal limb angle steel, which is arranged at the top of the second long side box-type bottom beam, and the short limb side of the second unequal limb angle steel is welded and connected to the top of the second long side box-type bottom beam, and the length of the long limb of the second unequal limb angle steel is greater than the length of the long limb of the first unequal limb angle steel; a plurality of second triangular stiffening ribs, which are arranged at intervals on the second unequal limb angle steel, and the right angle side length of the second triangular stiffening rib is greater than the right angle side length of the first triangular stiffening rib; two pairs of second long side bottom beam ear plates, which are respectively arranged at the two ends of the long limb side of the second unequal limb angle steel, and the length of the second long side bottom beam ear plates is greater than the length of the first long side bottom beam ear plates; two second short steel round tubes, which are respectively arranged on each pair of second long side bottom beam ear plates. Through this structural arrangement, the center axis height of the second short steel round tube is higher than the center axis height of the first short steel round tube 145, which is conducive to keeping the wall flat when folded. During the connection, first weld the short leg side of the second unequal-leg angle steel to the top of the second long-side box-type bottom beam, then weld the second triangular stiffening rib to the second unequal-leg angle steel, and then weld the second long-side bottom beam ear plate to both ends of the long leg side of the second unequal-leg angle steel. Then, weld the second short steel round tube to the semicircular welding port reserved in the ear plate of the second long-side bottom beam, and finally pour concrete around the second unequal-leg angle steel to complete the installation of the second module unit long-side bottom beam 15.

[0059] like Fig.11 As shown, each module unit short side bottom beam 16 includes a short side box-shaped bottom beam 161; two pairs of short side bottom beam ear plates 162, respectively arranged at the two ends of one side of the short side box-shaped bottom beam 162; and two third short steel round tubes 163, respectively arranged on each pair of short side bottom beam ear plates 162. Compared with the first module unit long side bottom beam 14 and the second module unit long side bottom beam 15, the module unit short side bottom beam 16 is not provided with an unequal limb angle steel structure, the short side bottom beam ear plates 162 are directly arranged on the side of the short side box-shaped bottom beam 162, and the third short steel round tube 163 is arranged on the short side bottom beam ear plates 162. Through this structural arrangement, the center axis height of the third short steel round tube 163 is lower than the center axis height of the first short steel round tube 145 and the second short steel round tube, which is conducive to keeping the wall surface flat when folded. During connection, the short side bottom beam ear plates 162 are welded to the two ends of one side of the short side box-shaped bottom beam 162 , and then the third short steel round tube 163 is welded to the semicircular welding opening reserved on the short side bottom beam ear plates 162 .

[0060] The wall panels 2 include a first module unit long side wall panel 21 located between the module unit long side top beam 12 and the first module unit long side bottom beam 14, a second module unit long side wall panel 22 located between the module unit long side top beam 12 and the second module unit long side bottom beam 15, and a module unit short side wall panel 23 located between the module unit long side top beam 12 and the module unit short side bottom beam 16. The present invention can avoid the problem of the construction space being continuously reduced or even disappeared during the connection process of the module units due to the complete main structure and the enclosure system of the module units through the folding structure of the enclosure system, and can realize a completely open construction space during the connection construction process of the module units.

[0061] like Fig.12 and Fig.13 As shown, the long side wall panel 21 of the first module unit includes a first long side concrete wall 211; a first long side long steel round tube 212, which is arranged at the bottom end of the first long side concrete wall 211, and the first long side long steel round tube 212 cooperates with the first short steel round tube 145 of the long side bottom beam 14 of the first module unit, is penetrated by the first rotating shaft rod, and the first rotating shaft sealing plate is welded on both sides of the first rotating shaft rod, so that the long side wall panel of the first module can be rotated around the first rotating shaft rod to the long side connecting steel plate 122 of the long side top beam 12 of the corresponding module unit; a plurality of pairs of first long side ear plates 213 are arranged at intervals on the first long side long steel round tube 212, and the first long side ear plates 213 are fixed to the first long side through the corresponding first long side steel plate embedded parts 214. The bottom end of the concrete wall 211; the third limiting component is arranged at the top of the first long side concrete wall, the third limiting component matches the first limiting component, preferably, the third limiting component is a plurality of first long side connecting steel plates 215 arranged at intervals at the top of the first long side concrete wall 211, the first long side connecting steel plates 215 are fixed to the top of the first long side concrete wall 211 through the first long side bending embedded parts 216, the first long side channel steel 217 is arranged between the first long side connecting steel plates 215 and the corresponding first long side bending embedded parts 216, and the first long side connecting steel plates 215 are provided with third bolt holes 2151 matching the first bolt holes 1221 opened on the long side top beams 12 of the corresponding module units. When connecting, first weld the first long side connecting steel plate 215 with the corresponding first long side channel steel 217 and the first long side bent embedded part 216 into a whole, and then anchor it to the top of the first long side concrete wall 211 through the first long side bent embedded part 216; weld the first long side long steel round tube 212 with the corresponding first long side ear plate 213 and the first long side steel plate embedded part 214 into a whole, and then anchor it to the bottom of the first long side concrete wall 211 through the first long side steel plate embedded part 214 to complete the installation of the first module unit long side wall panel 21.

[0062] The components of the long side wall panels 22 of the second module unit are similar to those of the long side wall panels of the first module, except that they are of different heights. The long side wall panels of the second module unit include a second long side concrete wall, the height of the second long side concrete wall is shorter than that of the first long side concrete wall 211; a second long side long steel round tube is arranged at the bottom end of the second long side concrete wall, the second long side long steel round tube cooperates with the second short steel round tube of the long side bottom beam 15 of the second module unit, penetrated by a second rotating shaft rod, and a second rotating shaft sealing plate is welded on both sides of the second rotating shaft rod, so that the long side wall panels of the second module unit can rotate around the second rotating shaft rod to the long side connecting steel plate 122 of the long side top beam 12 of the corresponding module unit. Preferably, the horizontal height of the second rotating shaft rod is greater than the horizontal height of the first rotating shaft rod. In this way, the long side wall panels 21 of the first module unit and the long side wall panels 21 of the second module unit are connected to each other. After being folded inward, the long side wall panel 22 of the second module unit can be smoothly stacked on the long side wall panel 21 of the first module unit; a plurality of pairs of second long side ear panels are arranged at intervals on the second long side long steel round tube, and the second long side ear panels are fixed to the bottom end of the second long side concrete wall through the second long side steel plate embedded parts; a plurality of second long side connecting steel plates are arranged at intervals at the top end of the second long side concrete wall, and the second long side connecting steel plates are fixed to the top end of the second long side concrete wall through the second long side bending embedded parts, a second long side channel steel is arranged between the second long side connecting steel plate and the second long side bending embedded parts, and a fourth bolt hole matching the first bolt hole 1221 opened on the long side top beam of the corresponding module unit is arranged on the second long side connecting steel plate. When connecting, first weld the second long side connecting steel plate with the corresponding second long side channel steel and the second long side bent embedded parts into a whole, and then anchor it to the top of the second long side concrete wall through the second long side bent embedded parts; weld the second long side long steel round tube with the corresponding second long side ear plate and the second long side steel plate embedded parts into a whole, and then anchor it to the bottom of the second long side concrete wall through the second long side steel plate embedded parts to complete the installation of the second module unit long side wall panel.

[0063] like Fig.14 and Fig.15As shown, the short side wall panel 23 of the module unit includes a short side concrete wall 231; a short side long steel round tube 232, which is arranged at the bottom end of the short side concrete wall 231, and the short side long steel round tube 232 cooperates with the third short steel round tube 163 of the short side bottom beam 16 of the module unit, and is penetrated by a third rotating shaft rod, and a third rotating shaft sealing plate is welded on both sides of the third rotating shaft rod, so that the short side wall panel 23 of the module unit can be rotated around the third rotating shaft rod to the short side connecting steel plate 132 of the short side top beam 13 of the corresponding module unit. Preferably, the horizontal height of the third rotating shaft rod is less than the horizontal height of the first rotating shaft rod. In this way, when the wall panel is folded, the long side wall panel 21 of the first module unit is flatly stacked on the short side wall panel 23 of the module unit, which can ensure that the four wall panels remain flatly stacked in the folded state; multiple pairs of short side ear plates 233, between The short side ear plate 233 is arranged on the short side long steel round tube 232, and is fixed to the bottom end of the short side concrete wall 231 through the corresponding short side steel plate embedded part 234; the fourth limiting component is arranged at the top of the short side concrete wall, and the fourth limiting component matches the second limiting component. Preferably, the fourth limiting component is a plurality of short side connecting steel plates 235 arranged at intervals at the top of the short side concrete wall 231, and the short side connecting steel plates 235 are fixed to the top of the short side concrete wall 231 through the corresponding short side bending embedded parts 236. A short side channel steel 237 is arranged between the short side connecting steel plate 235 and the corresponding short side bending embedded parts 236, and a fifth bolt hole 2351 matching the second bolt hole 1321 opened on the short side top beam 13 of the module unit is arranged on the short side connecting steel plate 235. When connecting, first weld the short side connecting steel plate 235 with the corresponding short side channel steel 237 and the short side bent embedded part 236 into a whole, and then anchor it to the top of the short side concrete wall 231 through the short side bent embedded part 236; weld the short side long steel round tube 232 with the corresponding short side ear plate 233 and the short side steel plate embedded part 234 into a whole, and then anchor it to the bottom of the short side concrete wall 231 through the short side steel plate embedded part 234 to complete the installation of the module unit short side wall panel 23.

[0064] When the foldable modular building steel structure unit of the present invention is assembled, the modular unit folding column 11, the modular unit long side top beam 12, the modular unit short side top beam 13, the first modular unit long side bottom beam 14, the second modular unit long side bottom beam 15, the modular unit short side bottom beam 16 are first assembled. Figure 2 As shown, the square frame body 1 is welded into a whole to obtain the concrete floor 4, and then the long side wall panel 21 of the first module unit, the long side wall panel 22 of the second module unit, and the short side wall panel 23 of the second module unit are hoisted to the designed position respectively, and the long steel round tube of each wall panel is aligned with the short steel round tube of the corresponding bottom beam respectively, and then the rotating shaft rod is passed through each steel round tube, and the rotating shaft sealing plate is welded on both sides of the rotating shaft rod, and then the bolt holes on the top connecting steel plate of the wall panel are aligned with the bolt holes of the corresponding top beam connecting steel plate, and then the bolts are tightened to fix, and finally the concrete top plate is poured to complete the assembly of the foldable modular building steel structure unit.

[0065] During transportation, the foldable modular building steel structure unit is in a folded state. Fig.16 When folding, the short side wall panels 23 of the module unit, the long side wall panels 22 of the first module unit, and the long side wall panels 21 of the second module unit are rotated around the corresponding rotation axes to the floor 4, and then each module unit folding column 11 is folded along the rotating structure in the column. During on-site construction, the foldable modular building steel structure units need to be fully unfolded, such as Figure 17-Figure 23 As shown, the top plate drives the module unit folding column 11 to be propped up vertically by a jack, and the pin shafts 114 and the through bolts 115 of the module unit folding column 11 are tightened respectively to complete the unfolding construction of the module unit folding column 11; then the second module unit long side wall panel 21, the first module unit long side wall panel 22, and the second module unit short side wall panel 23 are respectively rotated around the corresponding rotation axis to the connecting steel plate of the corresponding top beam, and the bolts are tightened to align the bolt holes of the wall panel and the top beam to complete the unfolding construction of the foldable module building steel structure unit. The foldable module building steel structure unit is fully unfolded as shown in the following figure. Figure 1 shown.

[0066] Based on the above-mentioned foldable modular building steel structure unit, the present invention also provides a modular building steel structure, which includes the above-mentioned foldable modular building steel structure unit. The present invention can realize a completely open construction space during the splicing process of the modular units, solves the problem that the modular units in the existing modular building steel structure system are only connected at the corner position, and there is almost no connection between the adjacent components of the modular units, and they are all in an independent working state, and a collaborative working mechanism cannot be formed. It can realize the reliable connection of the modular units between the components, and enhance the integrity and bearing capacity of the structure.

[0067] Through the description of the embodiments of the foldable modular building steel structure unit of the present invention, it can be seen that the embodiments of the foldable modular building steel structure unit of the present invention have at least one or more of the following advantages:

[0068] (1) Compared with the existing modular building steel structure system, the transportation of modular units relies on heavy trucks. Due to the large spatial dimensions of the modular units, a truck can generally only transport one modular unit at a time, which limits the transportation capacity of the modular units to a certain extent, thereby affecting the construction speed of the modular building; since the modular units have a complete main structure and enclosure system, the construction space will be continuously reduced or even disappear during the connection process of the modular units. The foldable modular building steel structure unit of the present invention includes a square frame body 1 and a plurality of wall panels 2. The square frame body 1 includes a plurality of modular unit folding columns 11. A rotating hinge structure is adopted between the columns of each modular unit folding column 11. Each wall panel 2 can be turned inwardly relative to the square frame body 1. Through the folding structure of the main structure, the spatial dimensions of the modular unit during transportation can be greatly compressed, and the transportation capacity can be improved. During the connection construction process of the modular unit, a completely open construction space can be realized. At the same time, the modular unit folding columns 11 adopt structures such as internal and external four-ear plates and a cross-shaped pin group, which can ensure that the unfolded modular unit folding column 11 has a strong bending resistance.

[0069] (2) Compared with the existing modular building steel structure system, the modular units are only connected at the corners, and there is almost no connection between the adjacent components of the modular units, all of which are in an independent working state and fail to form a collaborative working mechanism. The present invention can achieve a completely open construction space during the splicing process of the modular units, solve the root cause of the above problems, and further achieve reliable connection between the modular units and enhance the integrity and bearing capacity of the structure.

[0070] (3) The modular unit folding column 11 of the present invention is connected between columns by two pairs of ear plates, and a shear plate is arranged between the pair of ear plates located on the inner side. The pin shaft 114 and the through bolt 115 are respectively fixed through the pin shaft hole arranged on the ear plate and the multiple through bolt holes dispersedly arranged around the pin shaft hole. With the above-mentioned structural arrangement, the internal force of the two ear plates forms a force couple, which can effectively resist the bending moment of the component; the shear plate can improve the out-of-plane stability of the two ear plates and transmit the shear force; since the through bolts 115 are dispersedly arranged around the central pin shaft 114, their shear forces form a resultant force couple, which can effectively resist the external bending moment; the above-mentioned structures cooperate with each other to ensure that the modular unit folding column 11 has good bending bearing capacity in the two main axis directions to a large extent, and can ensure that the modular unit folding column 11 has strong bending resistance after being unfolded.

[0071] (4) The present invention arranges unequal-leg angle steel structures on the long-side bottom beam 14 of the first module unit and the long-side bottom beam 15 of the second module unit, respectively, and the length of the long limb of the second unequal-leg angle steel arranged on the long-side bottom beam 15 of the second module unit is greater than the length of the long limb 142 of the first unequal-leg angle steel arranged on the long-side bottom beam 14 of the first module unit, and ear plates are arranged at both ends of the long side limbs of the unequal-leg angle steel, and short steel round tubes are arranged on the ear plates; short steel round tubes are directly arranged on the ear plates at both ends of the side of the short-side bottom beam 16 of the module unit, so that the long-side bottom beam 14 of the first module unit is located , the short steel round tubes on the long side bottom beam 15 of the second module unit and the short side bottom beam 16 of the module unit form a certain height difference. In this way, when the wall panel is connected to the corresponding bottom beam, the first rotating shaft rod connecting the long side wall panel 21 of the first module unit and the long side bottom beam 14 of the first module unit, the second rotating shaft rod connecting the long side wall panel 22 of the second module unit and the long side bottom beam 15 of the second module unit, and the third rotating shaft rod connecting the short side wall panel 23 of the module unit and the short side bottom beam 16 of the module unit are not at the same horizontal height, which can ensure that the four wall panels remain flat and stacked when folded.

[0072] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A foldable modular building steel structure unit, characterized in that: include The square frame body includes a plurality of module unit folding columns, each module unit folding column includes a column-in-column rotating structure arranged in the middle of the module unit folding column, short rotating columns symmetrically arranged at both ends of the column-in-column rotating structure, and long rotating columns symmetrically arranged at both ends of the module unit folding column, and a rotating hinge structure is adopted between each module unit folding column; A plurality of wall panels are respectively arranged on the side surfaces of the square frame body. Each wall panel can be turned and folded inwardly relative to the square frame body, and after folding, each wall panel is stacked and arranged at the bottom of the square frame body.

2. The foldable modular building steel structure unit according to claim 1, characterized in that: The column rotation structure includes Solid steel block; Two pairs of column middle ear plates are respectively arranged at both ends of the solid steel block, each pair of column middle ear plates is respectively provided with a corresponding first pin shaft hole, and a plurality of first pairs of through bolt holes are dispersedly arranged around the first pin shaft hole; The shear plates in the two columns are respectively arranged between the ear plates in each pair of columns.

3. The foldable modular building steel structure unit according to claim 2, characterized in that: Each short rotating column includes Box type short column; Two short column end capping plates are respectively arranged at both ends of the box-type short column; Two pairs of short column ear plates are respectively arranged at one end of the short column end cover plate away from the box-type short column, the short column ear plates include a first short column ear plate and a second short column ear plate, and the first short column ear plate matches the column middle ear plate, the first short column ear plate is provided with a second pin shaft hole matching the first pin shaft hole and a second pair of through bolt holes matching the first pair of through bolt holes, the second short column ear plate is provided with a third pin shaft hole and a plurality of third pairs of through bolt holes are dispersedly arranged around the third pin shaft hole; The short column shear plate is arranged between the two second short column ear plates.

4. The foldable modular building steel structure unit according to claim 3, characterized in that: Each long rotating column includes Box-type long column; The long column end cover plate is arranged at one end of the box-type long column; A pair of long column ear plates are arranged at the end of the long column end cover plate away from the box-type long column, the long column ear plate matches the second short column ear plate, and the long column ear plate is provided with a fourth pin shaft hole matching the third pin shaft hole and a fourth pair of through bolt holes matching the third pair of through bolt holes.

5. The foldable modular building steel structure unit according to claim 1, characterized in that: The square frame body also includes Two module unit long side top beams are symmetrically arranged at the top end of the square frame body, and each module unit long side top beam includes a long side box-shaped top beam and a first limit assembly arranged at the bottom end of the long side box-shaped top beam; Two module unit short side top beams are symmetrically arranged at the top end of the square frame body, and each module unit short side top beam includes a short side box-shaped top beam and a second limiting component arranged at the bottom end of the short side box-shaped top beam; The long side bottom beam of the first module unit is arranged at the bottom end of the square frame body and is arranged opposite to the long side top beam of one of the module units; The second module unit long side bottom beam is arranged at the other side of the bottom end of the square frame body corresponding to the first module unit long side bottom beam; The short side bottom beams of the two module units are symmetrically arranged at the bottom end of the square frame body and are arranged opposite to the short side top beams of the module units.

6. The foldable modular building steel structure unit according to claim 5, characterized in that: The long side bottom beam of the first module unit includes The first long side box-type bottom beam; A first unequal-leg angle steel is arranged at the top end of the first long-side box-shaped bottom beam; Two pairs of first long side bottom beam ear plates are respectively arranged at two ends of the long limb side of the first unequal limb angle steel; The two first short steel round tubes are respectively arranged above each pair of first long side bottom beam ear plates.

7. The foldable modular building steel structure unit according to claim 5, characterized in that: Each module unit short side bottom beam includes Short side box-type bottom beam; Two pairs of short side bottom beam ear plates are respectively arranged at two ends of one side of the short side box-shaped bottom beam; The second and third short steel round tubes are respectively arranged above each pair of short side bottom beam ear plates.

8. The foldable modular building steel structure unit according to claim 5, characterized in that: Wall panels include The long side wall plate of the first module unit is arranged between the long side top beam of the module unit and the long side bottom beam of the first module unit, and the long side wall plate of the first module unit includes a first long side concrete wall, a first long side long steel round tube arranged at the bottom end of the first long side concrete wall, a plurality of pairs of first long side ear plates arranged at intervals on the first long side long steel round tube, and a third limiting component arranged at the top end of the first long side concrete wall and matching with the first limiting component; The second module unit long side wall plate is arranged between the module unit long side top beam and the second module unit long side bottom beam; The short side wall panels of the modular unit are arranged between the top beam of the modular unit field and the short side bottom beam of the modular unit. The short side wall panels of the modular unit include a short side concrete wall, a short side long steel round tube arranged at the bottom end of the short side concrete wall, a plurality of pairs of short side ear plates arranged at intervals on the short side long steel round tube, and a fourth limiting component arranged at the top end of the short side concrete wall and matching the second limiting component.

9. The foldable modular building steel structure unit according to claim 8, characterized in that: The first long side long steel round tube is connected to the long side bottom beam of the first module unit through the first rotating shaft rod, the first long side long steel round tube is connected to the long side bottom beam of the second module unit through the second rotating shaft rod, and the short side long steel round tube is connected to the short side bottom beam of the module unit through the third rotating shaft rod, wherein the heights of the first rotating shaft rod, the second rotating shaft rod, and the third rotating shaft rod are not on the same horizontal line.

10. A modular building steel structure, characterized in that: The invention comprises the foldable modular building steel structure unit as described in any one of claims 1 to 9.

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