Prefabricated room module, modular building and construction method

Abstract

The invention provides a prefabricated room module, a modular building and a construction method. The prefabricated room module comprises a semi-pouring wall body, a frame body without concrete pouring and a floor body. The frame body comprises frame columns and frame beams, and the frame columns and the frame beams are each provided with a through hole used for enabling cast-in-place concrete to flow into a semi-pouring wall. The semi-pouring wall body is provided with a pre-pouring area where heat preservation materials are poured and a cast-in-place area where concrete is not poured, and the cast-in-place area is used for containing the concrete flowing in through the through holes when the frame column and the floor body are poured in place. According to the prefabricated room module provided by the embodiment of the invention, after on-site concrete pouring, the floor slab body, the frame body and the semi-pouring wall body in the prefabricated room module are further connected based on cast-in-place concrete, so that a light steel concrete structure which is firmer in structure and higher in overall rigidity is formed; the strength and rigidity of the enclosure part are improved, the integrity of the module is improved, the anti-seismic performance is excellent, and the heat preservation and heat insulation performance is good.

Description

Technical Field

[0001] The present invention relates to the field of building technology, and in particular to a prefabricated room module, a modular building and a construction method. Background Art

[0002] In the prior art, light steel frame structures have the characteristics of simple construction, convenient assembly and disassembly, and flexible layout, and are suitable for low-rise civil buildings. Light steel frame structures usually use beams and columns as the frame structure of the main building, and cooperate with assembled wall panels and floor slabs to form the main body of low-rise civil buildings. Among them, the connection form between each component has a great influence on the rigidity of the main building.

[0003] At present, low-rise civil buildings generally need to be fixed to the frame structure through point connections such as expansion bolts and self-tapping screws, but their stability and earthquake resistance are poor. Summary of the invention

[0004] To solve the above problems, an object of the embodiments of the present invention is to provide a prefabricated room module, a modular building and a construction method.

[0005] In the first aspect, an embodiment of the present invention provides a prefabricated room module, comprising: a semi-cast wall, a frame body without concrete, and a floor body without concrete; the frame body comprises frame columns and frame beams, and the frame columns and the frame beams are both provided with through holes for allowing cast-in-place concrete to flow into the semi-cast wall; the semi-cast wall has a pre-cast area with cast insulation material and a cast-in-place area without concrete, and the cast-in-place area is used to accommodate concrete flowing in through the through holes when the frame columns and the floor body are cast on site.

[0006] Optionally, the cast-in-place area includes a side area and a top area of ​​the semi-cast wall; the side area is used to accommodate concrete flowing in when the frame columns are cast on site, and the top area is used to accommodate concrete flowing in through the frame beams when the floor slab body is cast on site.

[0007] Optionally, the semi-cast wall includes: opposite inner wall panels and outer wall panels, a keel system sandwiched between the inner wall panels and the outer wall panels, and the thermal insulation material accommodated in the pre-cast area.

[0008] Optionally, the keel system includes top keels, ground keels, transverse keels, longitudinal keels and side longitudinal keels; the area above the transverse keel along the height direction of the semi-cast wall and the area between the side longitudinal keel and the longitudinal keel adjacent to the side longitudinal keel along the horizontal direction of the semi-cast wall are all cast-in-place areas; the area surrounded by the longitudinal keel adjacent to the side longitudinal keel, the transverse keel and the ground keel is the pre-cast area.

[0009] Optionally, the thermal insulation material is foamed concrete.

[0010] Optionally, a plurality of the through holes are formed on the side wall of the frame column toward the interior of the semi-cast wall in a height direction; and a plurality of the through holes are formed on the top and bottom of the frame beam in a horizontal direction.

[0011] Optionally, the frame beam is a C-shaped steel beam or a box-shaped steel beam.

[0012] Optionally, the frame columns are L-shaped steel columns.

[0013] Optionally, the cross-sectional shape of the frame column is a closed shape, or an open shape.

[0014] Optionally, the prefabricated room module also includes: a plug-in assembly; the plug-in assembly includes a connecting plate and a plug-in column, the connecting plate is provided with a plurality of fixing holes, the plug-in column passes through the fixing holes and is fixed to the connecting plate; the upper and lower surfaces of the connecting plate are respectively connected to the frame columns connected to the upper and lower adjacent prefabricated room modules, the part of the plug-in column located on one side of the connecting plate extends into the frame column of the lower layer, and the part of the plug-in column located on the other side of the connecting plate extends into the frame column of the upper layer.

[0015] Optionally, the frame columns to which the adjacent prefabricated room modules of the upper and lower layers are butted are all L-shaped steel columns, and the connecting plate is configured as an L-shaped plate corresponding to the cross-sectional shape of the frame column.

[0016] Optionally, the connecting plate includes a connecting area, a first extension area and a second extension area, and the first extension area and the second extension area are respectively connected to the connecting area so that the connecting plate is L-shaped; the first extension area is provided with the fixing hole, and / or the second extension area is provided with the fixing hole, and / or the connecting area is provided with the fixing hole.

[0017] Optionally, the number of the plug-in posts is set to be multiple and is the same as the number of the fixing holes; or, the number of the plug-in posts is set to be multiple and is less than the number of the fixing holes; or, the number of the plug-in posts is set to be one.

[0018] Optionally, based on the fact that the number of the plug-in posts is set to be plural and less than the number of the fixing holes, a fixing hole without a plug-in post is provided between two adjacent plug-in posts.

[0019] Optionally, the number of fixing holes on the first extension area is two, the number of fixing holes on the second extension area is two, the number of fixing holes on the connection area is one; and the number of the plug-in posts is three.

[0020] Optionally, along the length direction of the plug-in column, a plurality of connecting holes for concrete to pass through are arranged on the side wall of the plug-in column.

[0021] Optionally, based on the cross-section of the plug-in column being set to be a rectangle, the communicating holes are provided on two opposite side walls of the plug-in column; or, the communicating holes are provided on all four side walls of the plug-in column.

[0022] Optionally, the communicating hole is a circular hole, a waist-shaped hole, a rectangular hole or a trapezoidal hole.

[0023] Optionally, the fixing hole is a rectangular hole or a circular hole, and the cross section of the plug-in column is set to a corresponding rectangle or circle.

[0024] Optionally, there is a clearance fit between the plug-in column and the fixing hole.

[0025] Optionally, the plug-in column is welded and fixed to the connecting plate; and / or a limiting portion is provided on the outer wall of the plug-in column, and when the plug-in column is fixed to the connecting plate, the limiting portion abuts against part of the connecting plate around the fixing hole to limit the plug-in column from falling off from the fixing hole.

[0026] In a second aspect, an embodiment of the present invention further provides a modular building, comprising: at least one prefabricated room module as described above, concrete cast on site in the frame columns and floor slab bodies of the prefabricated room modules, and concrete flowing into the cast-in-place areas of the semi-cast walls when pouring the frame columns and floor slab bodies.

[0027] In a third aspect, an embodiment of the present invention further provides a construction method for a modular building, comprising: placing prefabricated room modules on the same floor in place by hoisting, pouring concrete into the frame columns and floor slab bodies of the prefabricated room modules, the concrete flowing into the cast-in-place area of ​​the semi-cast wall through the through holes on the frame columns and frame beams, so that the prefabricated room modules that have been placed in place gradually form the modular building.

[0028] In the solution provided in the first aspect of the embodiment of the present invention, the traditional whole-piece prefabricated wall panel is first improved, and a cast-in-place area for secondary pouring is reserved in advance by using a reserved cavity to obtain a semi-cast wall; and the traditional beam and column structure is improved accordingly, and a through hole for the concrete cast on site to flow is opened in advance in the frame column and the frame beam to obtain a frame body that can be used in conjunction with the semi-cast wall. After the floor slab body, the frame body and the semi-cast wall are fixedly connected to form the overall structure of the prefabricated room module, not only can the mobile construction be carried out by the overall hoisting and transportation, but also the construction process of installing each building component on site is reduced. In addition, after the on-site concrete is poured, the floor slab body, the frame body and the semi-cast wall in the prefabricated room module can be further connected based on the cast-in-place concrete to form a light steel thin-walled concrete structure with a more solid structure and stronger overall rigidity, thereby improving the strength and rigidity of the enclosure part. The light steel frame structure works with the secondary poured concrete to improve the integrity of the module and has excellent seismic performance; the light steel frame structure is wrapped in concrete and has good fire resistance. In addition, since the pre-cast area of ​​the semi-cast wall is filled with insulation materials, the wall has good thermal insulation performance, which is more suitable for low-rise and multi-story rural and town buildings.

[0029] In the solution provided in the second aspect of the embodiment of the present invention, since the prefabricated room modules used are manufactured in the factory, the modular buildings constructed are more standardized. Secondly, the modular buildings with light steel frame concrete composite structures are also more suitable for building scenarios such as low-rise residential buildings, village houses and civil buildings. In addition, in the modular buildings provided in the embodiment of the present invention, by reserving cast-in-place areas and pouring concrete for the second time, each building component forms an overall structure with stronger rigidity. Therefore, the modular building not only has high bearing capacity and rigidity, but also has good seismic performance, fire resistance and corrosion resistance. Compared with steel modular buildings, the modular buildings provided in the embodiment of the present invention are mainly subjected to combined structure forces, which can further reduce the amount of steel used and save construction costs.

[0030] In the solution provided in the third aspect of the embodiment of the present invention, since the construction method is implemented for the prefabricated room module, only the prefabricated room module needs to be hoisted and concrete poured at the construction site, and all or most of the small component hoisting, scaffolding and construction support erection work can be cancelled. There is no need to support the concrete formwork, tie and weld the steel bars on site, which can greatly reduce the number of construction personnel required at the construction site, while reducing the difficulty of on-site construction and improving the construction speed and efficiency. In addition, the construction method does not require additional reinforcement and connection procedures for the floor slab body, frame body and semi-cast wall in the prefabricated room module. It only needs to pour concrete into the frame column and the floor slab body according to the original procedure to achieve a more stable connection between the three, and the construction method is simple.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A schematic structural diagram of a prefabricated room module provided by an embodiment of the present invention is shown;

[0034] Figure 2 A schematic diagram of disassembling a prefabricated room module provided in an embodiment of the present invention is shown;

[0035] Figure 3 A schematic structural diagram of a frame column in a prefabricated room module provided in an embodiment of the present invention is shown;

[0036] Figure 4 A top view of a frame beam in a prefabricated room module provided by an embodiment of the present invention is shown;

[0037] Figure 5 A cross-sectional view of a semi-cast wall in a prefabricated room module provided by an embodiment of the present invention is shown;

[0038] Figure 6 A schematic structural diagram showing the connection between the frame body and the semi-cast wall in the prefabricated room module provided by an embodiment of the present invention;

[0039] Figure 7 A schematic cross-sectional view of an L-shaped steel column having a closed cross-sectional shape in a prefabricated room module provided in an embodiment of the present invention is shown;

[0040] Figure 8 A schematic cross-sectional view of an L-shaped steel column having an open cross-sectional shape in a prefabricated room module provided in an embodiment of the present invention is shown;

[0041] Fig. 9 A schematic diagram showing the connection between a C-shaped steel beam and an open L-shaped steel column in a prefabricated room module provided by an embodiment of the present invention is shown;

[0042] Fig.10 A schematic diagram showing a method of vertically connecting upper and lower layers of prefabricated room modules by using a plug-in assembly in a prefabricated room module provided in an embodiment of the present invention;

[0043] Fig.11 The structure of the plug-in assembly in the prefabricated room module provided by the embodiment of the present invention is shown. Figure 1 ;

[0044] Fig.12 The structure of the plug-in assembly in the prefabricated room module provided by the embodiment of the present invention is shown. Figure 2 ;

[0045] Fig.13 A schematic structural diagram of a connection plate in a prefabricated room module provided in an embodiment of the present invention is shown;

[0046] Fig.14 A schematic structural diagram of a plug-in column in a prefabricated room module provided in an embodiment of the present invention is shown;

[0047] Fig.15 A schematic diagram of a modular building provided by an embodiment of the present invention is shown.

[0048] icon:

[0049] 1-semi-cast wall, 2-frame body, 3-floor body, 11-precast area, 12-cast-in-place area, 13-interior wall panel, 14-exterior wall panel, 15-keel system, 20-through hole, 21-frame column, 22-frame beam, 151-ceiling keel, 152-ground keel, 153-transverse keel, 154-longitudinal keel, 155-edge longitudinal keel, 23-plug-in assembly, 231-connecting plate, 232-plug-in column, 233-fixing hole, 231a-connecting area, 231b first extension area, 231c-second extension area, 232a-connecting hole, 100-prefabricated room module, C-side area, D-top area, G-lattice plate. DETAILED DESCRIPTION

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be 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.

[0053] An embodiment of the present invention provides a prefabricated room module, such as Figure 1 As shown, the prefabricated room module is manufactured in a factory and specifically includes: a semi-cast wall 1, a frame body 2 without cast concrete, and a floor body 3 without cast concrete, see Figure 2 As shown, Figure 2 A schematic diagram of the disassembly of a prefabricated room module is shown. The semi-cast wall 1 may be a wall with pre-reserved openings for door and window installation (such as Figure 2 As shown), it can also be a whole wall without reserved door and window installation openings. Both the frame body 2 and the floor body 3 can be formed by pouring concrete at the construction site to form a complete frame structure and floor. The floor body 3 used in the embodiment of the present invention is an assembled floor, and specifically, it can be a steel truss floor decking, a steel truss floor decking without dismantling the bottom form, a precast concrete composite floor, a precast prestressed concrete composite floor, a precast prestressed ribbed concrete composite floor, a prestressed concrete steel pipe truss composite floor, etc. The embodiment of the present invention does not limit this. In the embodiment of the present invention, the floor body 3 can be fixedly connected to the frame body 2 by welding or fastener connection in the factory, and the semi-cast wall 1 can be fixed to the frame body 2 by connecting components. For example, the connecting components can be screws, nails, self-tapping screws, expansion bolts and other components, so that the semi-cast wall 1, the frame body 2 and the floor body 3 can form an integral structure in the factory, that is, a prefabricated room module.

[0054] Specifically, Figure 2 As shown, the frame body 2 includes four frame columns 21 and four frame beams 22 (it should be noted that Figure 2 The frame body 2 is not directly shown in the figure, and the frame column 21 and the frame beam 22 can be welded together in the factory to form the frame body 2. Figure 3 and Figure 4 As shown respectively, the frame column 21 and the frame beam 22 are both provided with through holes 20, such as grouting oblong holes, for allowing cast-in-place concrete to flow into the semi-cast wall 1. Optionally, the frame column 21 is provided with a plurality of through holes 20 along the height direction on the side wall facing the inside of the semi-cast wall 1; and the top and bottom of the frame beam 22 are provided with a plurality of through holes 20 along the horizontal direction.

[0055] In addition, if Figure 5 As shown, Figure 5 A cross-sectional view of a semi-cast wall is shown. Figure 5 It can be seen that the semi-cast wall 1 has a pre-cast area 11 ( Figure 5 In the figure, the heat preservation material (heat preservation material) cast in advance in the factory and the cast-in-place area 12 without concrete are shown in the form of dotted filling patterns. It can be understood that the precast area 11 with heat preservation material cast in advance can meet the heat preservation and heat insulation requirements of low-rise and multi-story residential buildings. Optionally, the heat preservation material is foamed concrete. The cast-in-place area 12 in the semi-cast wall 1 can be adapted to the frame column 21 and frame beam 22 with through holes 20. When the semi-cast wall 1 is fixedly installed with the frame body 2, the cast-in-place area 12 of the semi-cast wall 1 can be respectively connected to the frame column 21 and frame beam 22 connected to the semi-cast wall 1 (such as Figure 6 When the prefabricated room module is hoisted and transported to the construction site for on-site concrete pouring (such as on-site secondary pouring of C30 fine stone concrete, etc.), the concrete poured in the floor slab body 3 will flow through the frame beam 22 and from the through hole 20 ( Figure 6 Similarly, the concrete poured in the frame column 21 will also flow from the through hole 20 ( Figure 6 The concrete (not directly shown) flows into the cast-in-place area 12 of the semi-cast wall 1. That is, the cast-in-place area 12 of the semi-cast wall 1 can accommodate the concrete (not directly shown) flowing into the cast-in-place area 12 of the semi-cast wall 1 through the through hole 20 when the frame column 21 and the floor slab body 3 are cast on site. Figure 6 The concrete poured on site is shown in the form of a short-line filling pattern in the figure). After the concrete solidifies, the frame structure, floor slab and surrounding wall (i.e. the semi-cast wall 1 in the cast-in-place area 12 where the concrete pouring has been completed) obtained by the casting are formed into an integral structure.

[0056] The prefabricated room module provided in the embodiment of the present invention first improves the traditional whole-piece prefabricated wall panel, and reserves a cast-in-place area 12 for secondary pouring in advance by means of a reserved cavity, thereby obtaining a semi-cast wall 1; and correspondingly improves the traditional beam and column structure, and obtains a frame body 2 that can be used in conjunction with the semi-cast wall 1 by opening a through hole 20 for the concrete poured on site in advance in the frame column 21 and the frame beam 22. After the floor slab body 3, the frame body 2 and the semi-cast wall 1 are fixedly connected to form the overall structure of the prefabricated room module, not only can the mobile construction be carried out by means of overall hoisting and transportation, but also the construction process of installing various building components on site is reduced. Moreover, after the concrete is poured on site, the floor slab body 3, the frame body 2 and the semi-cast wall 1 in the prefabricated room module can be further connected based on the cast-in-place concrete to form a light steel thin-walled concrete structure with a more solid structure and stronger overall rigidity, thereby improving the strength and rigidity of the enclosure part. The light steel frame structure works with the secondary poured concrete to improve the integrity of the module and has excellent seismic performance; and the light steel frame structure is wrapped in concrete and has good fire resistance. In addition, since the pre-cast area 11 of the semi-cast wall 1 has been filled with insulation material, the wall has good thermal insulation performance and is more suitable for low-rise and multi-story rural and town buildings.

[0057] Alternatively, see Figure 5 As shown, the cast-in-place area 12 includes the side area of ​​the semi-cast wall 1 ( Figure 5 C in the figure) and the top area ( Figure 5 The side area is used to accommodate the concrete flowing in when the frame column 21 is cast on site. Since the floor slab is usually located above the beam and the wall panel is located at the bottom of the beam in the construction field, when the floor slab body 3 is cast on site, the concrete poured in the floor slab body 3 will flow downward to the frame beam 22 under the influence of gravity, and flow into the top area adjacent to the frame beam 22 in the cast-in-place area 12 of the semi-cast wall 1 based on the through hole 20 in the frame beam 22. In other words, the top area can accommodate the concrete flowing in through the frame beam 22 when the floor slab body 3 is cast on site.

[0058] Optionally, the semi-cast wall 1 includes: an inner wall panel 13 and an outer wall panel 14. The height of the inner wall panel 13 is less than the height of the outer wall panel 14, and the inner wall panel 13 and the outer wall panel 14 can be cement fiber panels. Figure 5 As shown, the semi-cast wall 1 also includes an inner wall panel 13 and an outer wall panel 14 (it should be noted that Figure 5The keel system 15 between the exterior wall panels 14 and the insulation material contained in the precast area 11 are not directly shown in the figure. Specifically, the keel system 15 can be firstly nailed to the surface of the interior wall panel 13 by means of nails or other connecting pieces, and the insulation material is poured into the precast area 11 in the form of flat mold casting and smoothed to prevent swelling; finally, the exterior wall panel 14 is covered, and the exterior wall panel 14 is fixedly connected to the keel system 15 by the same means, so as to form a structure as shown in FIG. Figure 2 The semi-cast wall 1 shown in the embodiment of the present invention has a wall panel structure in which the inner and outer wall panels are sandwiched with a keel system 15 and pre-cast with insulation materials, which can not only meet the insulation and fireproof performance indicators required by low-rise and multi-story residential buildings, but also can utilize the cast-in-place area 12 outside the pre-cast area 11 to further improve the stability of the connection between the semi-cast wall panel 1 and other components.

[0059] Alternatively, if Figure 5 As shown, the keel system 15 includes a top keel 151, a ground keel 152, a transverse keel 153, a longitudinal keel 154 and a longitudinal keel 155, and each keel in the keel system 15 can be formed into a whole by welding. Among them, the top keel 151 is arranged at a position adjacent to the semi-cast wall 1 and the frame beam 22, that is, the setting position of the top keel 151 can be close to the bottom of the frame beam 22 after the semi-cast wall 1 is fixedly connected to the frame body 2. It should be noted that the upper area of ​​the semi-cast wall 1 that exceeds the top keel 151 in the height direction can be close to the side surface of the frame beam 22, and the frame beam 22 is covered and hidden inside the semi-cast wall 1, so that the frame beam 22 is not exposed. The ground keel 152 is a keel arranged close to the ground as the name implies, and the ground keel 152 is arranged on the inner side of the bottom of the semi-cast wall 1. Two longitudinal keels 155 can be provided, which are respectively located at positions that can abut against the frame columns 21 connected to the two ends of the semi-cast wall 1. That is to say, the area of ​​the semi-cast wall 1 that exceeds the longitudinal keels 155 in the horizontal direction is used to abut against the surface of the frame column 21, and the frame column 21 is covered and hidden inside the semi-cast wall 1, so that the frame column 21 is not exposed. It can be understood that the top keel 151, the ground keel 152 and the longitudinal keel 155 constitute the outer edge contour of the keel system 15. In the embodiment of the present invention, multiple longitudinal keels 154 are arranged in sequence along the horizontal direction of the semi-cast wall 1 within the outer edge contour range of the keel system 15.

[0060] In addition, at least one transverse keel 153 is provided below the top keel 151 to divide the cast-in-place area 12 and the precast area 11. Figure 5As shown, the area above the transverse keel 153 along the height direction of the semi-cast wall 1, and the area between the longitudinal keel 155 adjacent to the longitudinal keel 155 and the longitudinal keel 154 adjacent to the longitudinal keel 155 along the horizontal direction of the semi-cast wall 1, are all cast-in-place areas 12. In other words, the area between the transverse keel 153 and the top keel 151, and the area between the longitudinal keel marked 154a in the figure and the longitudinal keel 155 adjacent to the longitudinal keel 155 are all cast-in-place areas 12. The area surrounded by the longitudinal keel 154 adjacent to the longitudinal keel 155, the transverse keel 153 and the ground keel 152 is the pre-cast area 11. In other words, the area enclosed by the longitudinal keel marked 154a in the figure, the transverse keel 153 and the ground keel 152 is the pre-cast area 11 where the thermal insulation material is pre-cast. The embodiment of the present invention can realize the division of the pre-cast area 11 and the cast-in-place area 12 only by the keel system 15, and the structure is simple and the cost is low.

[0061] Optionally, the frame beam 22 is a C-shaped steel beam or a box-shaped steel beam. In the embodiment of the present invention, the frame beam 22 can be made of a steel plate. Specifically, the steel plate can be directly bent to form a C-shaped steel beam, and further processed to obtain a C-shaped steel beam with through holes 20 on the upper and lower short sides. Fig. 9 Alternatively, two C-shaped steel beams with half holes opened on the upper and lower short edges can be butted together to form a box-shaped steel beam with a through hole 20.

[0062] Alternatively, if Figure 3 As shown, the frame column 21 is an L-shaped steel column. Figure 7 As shown, the cross-sectional shape of the frame column 21 is a closed shape, or it can also be as shown in FIG. Figure 8 As shown, the cross-sectional shape of the frame column 21 can also be made into an open shape. Among them, when the cross-sectional shape of the frame column 21 is a closed shape, the cross-sectional size of the frame column 21 is smaller, and when it is connected to the semi-cast wallboard 1, it is easier to hide inside the semi-cast wallboard 1, which can not only achieve the effect of not exposing the column, but also further reduce the cost.

[0063] In the embodiment of the present invention, a lattice plate with holes (such as Fig. 9 As shown, and the lattice plate is Fig. 9 The frame column 21 is provided with a plurality of support members 22 and 23, and the support members 23 are provided with a plurality of support members 24 and 25. The support members 24 ...

[0064] Alternatively, if Figures 10 to 14As shown, the prefabricated room module also includes: a plug-in component 23; the plug-in component 23 includes a connecting plate 231 and a plug-in column 232, the connecting plate 231 is provided with a plurality of fixing holes 233, the plug-in column 232 passes through the fixing holes 233 and is fixed on the connecting plate 231; the upper and lower surfaces of the connecting plate 231 are respectively connected to the frame columns 21 connected to the upper and lower adjacent prefabricated room modules, the part of the plug-in column 232 located on one side of the connecting plate 231 extends into the frame column 21 of the lower layer, and the part of the plug-in column 232 located on the other side of the connecting plate 231 extends into the frame column 21 of the upper layer.

[0065] It can be understood that when two adjacent prefabricated room modules are assembled in the height direction, the frame column 21 of the lower prefabricated room module will be connected to the frame column 21 of the upper prefabricated room module. The frame column 21 is a hollow structure, which is convenient for pouring concrete inside.

[0066] The connecting plate 231 is provided with a plurality of fixing holes 233, and the plug-in column 232 passes through the fixing holes 233 and is fixed to the connecting plate 231. In other words, the plug-in column 232 is sleeved with the connecting plate 231 at the middle position in the length direction thereof. The part of the plug-in column 232 located above the connecting plate 231 extends upward into the bottom of the frame column 21 of the upper prefabricated room module, and the part of the plug-in column 232 located below the connecting plate 231 extends into the top of the frame column 21 of the lower prefabricated room module. The frame columns 21 of the upper and lower prefabricated room modules that are opposite to each other are not in direct contact, but are fixed by the connecting plate 231. In other words, the upper surface of the connecting plate 231 is connected and fixed to the bottom of the frame column 21 of the upper prefabricated room module, and the lower surface of the connecting plate 231 is connected and fixed to the top of the frame column 21 of the lower prefabricated room module.

[0067] The connection plate 231 is provided with holes (fixing holes 233) and the plug-in columns 232 are fixed thereon, so that the size of the plug-in columns 232 can be appropriately reduced to avoid the situation where the plug-in columns 232 are close in size to the steel columns and are difficult to insert, and the problems of inconvenient installation, high manufacturing precision requirements, and high costs in the traditional plug-in components plugged into the steel columns through interference fit are effectively solved. In addition, all of the multiple fixing holes 233 can be used to install the plug-in columns 232 to improve the shear resistance of the connection between the two-layer frame columns 21, or some of the fixing holes 233 can be left vacant to allow concrete to flow from the frame columns 21 of the upper prefabricated room module to the frame columns 21 of the lower prefabricated room module, thereby improving the fluidity of the concrete at the connection and ensuring the connection strength of the two-layer frame columns 21.

[0068] Alternatively, if Fig.10 As shown, the frame columns 21 connected to the adjacent prefabricated room modules on the upper and lower floors are all L-shaped steel columns, and the connecting plate 231 is set as an L-shaped plate corresponding to the cross-sectional shape of the frame column 21.

[0069] The size of the L-shaped connecting plate 231 should be set to be the same as the cross-sectional size of the frame column 21 connected to the adjacent prefabricated room modules on the upper and lower floors, so as to ensure that when the connecting plate 231 is placed on the upper end of the lower frame column 21, the size of the connecting plate 231 will not be smaller than the inner wall size of the lower frame column 21 and fall into the lower frame column 21, and at the same time, it is also avoided that the size of the connecting plate 231 is larger than the outer wall of the frame column 21, causing the connecting plate 231 to protrude too much.

[0070] Since the frame column 21 has a certain wall thickness (such as 5 mm), the size of the connecting plate 231 is allowed to have a certain error. In other words, in order to reduce the manufacturing accuracy requirements and costs of the connecting plate 231, the size of the connecting plate 231 can be slightly different from the cross-sectional size of the two-layer frame column 21: when the size of the connecting plate 231 is slightly larger than the cross-sectional size of the frame column 21, it is polished after the connection (welding) between the connecting plate 231 and the steel column is completed; when the size of the connecting plate 231 is slightly smaller than the cross-sectional size of the frame column 21, the missing part of the connecting plate 231 can be filled by welding when the connecting plate 231 and the steel column are connected later.

[0071] Alternatively, if Fig.13 As shown, the connecting plate 231 includes a connecting area 231a, a first extension area 231b and a first extension area 231c, and the first extension area 231b and the first extension area 231c are respectively connected to the connecting area 231a so that the connecting plate 231 is L-shaped; a fixing hole 233 is provided on the first extension area 231b, and / or a fixing hole 233 is provided on the first extension area 231c, and / or a fixing hole 233 is provided on the connecting area 231a.

[0072] The first extension area 231b and the first extension area 231c are respectively connected to the connection area 231a, so that the connection plate 231 is L-shaped, that is, the extension direction of the first extension area 231b can be perpendicular to the extension direction of the first extension area 231c. Fixing holes 233 can be provided on the connection area 231a, the first extension area 231b and the first extension area 231c as needed to fix the plug-in column 232.

[0073] It should be understood that in actual operation, the connecting plate 231 can be a steel plate, that is, the connecting area 231a, the first extension area 231b and the first extension area 231c are only respective areas of the steel plate, such as Fig.13 As shown; alternatively, the connecting plate 231 may also be formed by splicing three separate steel plates, that is, the connecting area 231a, the first extension area 231b and the first extension area 231c are independent steel plates, and the three steel plates are welded to form a complete L-shaped steel plate.

[0074] Optionally, the number of the plug posts 232 is set to be multiple and the same as the number of the fixing holes 233; or, the number of the plug posts 232 is set to be multiple and less than the number of the fixing holes 233, such as Fig.11 and Fig.12 As shown; alternatively, the number of the plug-in posts 232 is set to one.

[0075] The number of the plug-in columns 232 can be set to be the same as the number of the fixing holes 233, that is, the plug-in columns 232 correspond to the fixing holes 233 one by one, and all the fixing holes 233 are fixed with plug-in columns 232. At this time, since the plug-in columns 232 can be a hollow structure, concrete can still flow from the upper frame columns 21 to the lower frame columns 21 through the hollow plug-in columns 232.

[0076] The number of the plug-in columns 232 can be set to be multiple and less than the number of the fixing holes 233, that is, the number of the plug-in columns 232 and the fixing holes 233 is not one-to-one corresponding, and there are cases where the plug-in columns 232 are not fixed in some of the fixing holes 233. At this time, the concrete can not only flow from the upper frame column 21 to the lower frame column 21 through the hollow plug-in columns 232, but also directly enter the lower frame column 21 through some of the fixing holes 233 on the connecting plate 231, thereby accelerating the flow rate of the concrete and ensuring that the concrete in the lower frame column 21 is poured densely.

[0077] Of course, the number of the plug-in posts 232 can also be directly set to one. When the number of the plug-in posts 232 is set to one, the plug-in posts 232 can be fixed in the fixing holes 233 of the connecting area 231a.

[0078] Alternatively, if Fig.11 As shown, based on the fact that the number of the plug-in posts 232 is set to be multiple and less than the number of the fixing holes 233 , a fixing hole 233 without a plug-in post 232 is provided between two adjacent plug-in posts 232 .

[0079] When the number of plug-in columns 232 is less than the number of fixing holes 233, that is, when some of the fixing holes 233 are not fixed with plug-in columns 232, the plug-in columns 232 can be arranged at intervals so that the remaining fixing holes 233 are also arranged at intervals, so that the concrete can flow evenly into the frame columns 21 of the lower layer. At the same time, the plug-in columns 232 are distributed at intervals, which also improves the tensile and shear resistance of the connection between the two layers of frame columns 21.

[0080] In a specific configuration, the number of fixing holes 233 on the first extension area 231b can be set to two, the number of fixing holes 233 on the first extension area 231c can be set to two, the number of fixing holes 233 on the connection area 231a can be set to one, and the number of plug-in columns 232 can be three. Of course, the number, distribution position, number of plug-in columns 232, etc. of the above-mentioned fixing holes 233 can be adjusted according to actual construction conditions and performance requirements such as strength and shear resistance, and this application does not limit this.

[0081] Alternatively, if Fig.11 , Fig.12 and Fig.14 As shown, along the length direction of the plug-in column 232, a plurality of connecting holes 232a for concrete to pass through are provided on the side wall of the plug-in column 232.

[0082] A connecting hole 232a is opened on the side wall of the plug-in column 232. After pouring concrete into the frame column 21, the concrete will fill the interior of the two layers of frame columns 21. The concrete passing through the connecting hole 232a can improve the grip between the plug-in column 232 and the concrete, and increase the rigidity and strength of the upper and lower layers of frame columns 21.

[0083] The specific distribution of the connecting holes 232a on the plug-in column 232 can be: when the cross section of the plug-in column 232 is set to be rectangular, the connecting holes 232a are set on the two opposite side walls of the plug-in column 232, that is, the two connecting holes 232a at the same height are set opposite to each other. Of course, the connecting holes 232a can also be set on all four side walls of the plug-in column 232, or the connecting holes 232a can be set on two adjacent side walls of the plug-in column 232.

[0084] The specific number of the communicating holes 232a can be adjusted according to actual needs.

[0085] The connecting hole 232a is one or more of a circular hole, a waist-shaped hole, a rectangular hole or a trapezoidal hole.

[0086] Optionally, the fixing hole 233 is a rectangular hole or a circular hole, and the cross section of the plug-in column 232 is set to a corresponding rectangle or circle. Figures 10 to 13 The fixing hole 233 shown in FIG. 1 is a rectangular hole (square hole).

[0087] The cross-sectional shape of the plug-in post 232 corresponds to the fixing hole 233 , so that the plug-in post 232 is fixed in the fixing hole 233 .

[0088] When the fixing hole 233 is a circular hole, that is, the cross section of the plug column 232 is circular, the connecting holes 232a on the plug column 232 can be arranged in multiple rows along the circumference of the plug column 232. The same as when the cross section of the plug column 232 is rectangular, when the cross section of the plug column 232 is circular, the connecting holes 232a are arranged in multiple rows along the length direction of the plug column 232; the difference from when the cross section of the plug column 232 is rectangular is that when the cross section of the plug column 232 is rectangular, each side of the rectangle (that is, each side of the plug column 232) can be provided with connecting holes 232a, and when the cross section of the plug column 232 is circular, its side wall is a circumferential surface, and multiple rows of connecting holes 232a can be arranged along the circumferential surface.

[0089] Optionally, there is a clearance fit between the plug-in column 232 and the fixing hole 233 .

[0090] A clearance fit is provided between the plug-in column 232 and the fixing hole 233 to facilitate the insertion of the plug-in column 232 into the fixing hole 233, and then the plug-in column 232 is pre-fixed by other means so that the position of the plug-in column 232 is fixed when concrete is poured into the upper and lower frame columns 21.

[0091] Of course, in some cases, a transition fit or an interference fit may be adopted between the plug-in column 232 and the fixing hole 233 , and the plug-in column 232 may be quickly inserted into the fixing hole 233 of the connecting plate 231 by knocking or the like.

[0092] Optionally, the plug-in column 232 is welded and fixed to the connecting plate 231; and / or, a limiting portion (not shown in the figure) is provided on the outer wall of the plug-in column 232. When the plug-in column 232 is fixed to the connecting plate 231, the limiting portion abuts against a portion of the connecting plate 231 on the periphery of the fixing hole 233 to limit the plug-in column 232 from falling off from the fixing hole 233.

[0093] After the plug-in column 232 is inserted into the fixing hole 233 of the connecting plate 231 , it can be fixed by welding.

[0094] In order to further reduce the on-site construction process, a limiting portion can be set on the outside of the plug-in column 232. When the plug-in column 232 is inserted into the fixing hole 233 of the connecting plate 231, the limiting portion presses against the connecting plate 231 to limit the plug-in column 232 from falling off from the fixing hole 233, thereby replacing the above-mentioned welding process.

[0095] Specifically, a protrusion may be formed on the outer wall surface of the plug-in column 232 or a screw may be installed to form a limiting portion, so that the plug-in column 232 is limited and fixed when it is installed in place in the fixing hole 233 .

[0096] In some cases, a steel bar can be directly fixed in the connecting hole 232a as a limiting part. The length of the steel bar is smaller than the side length (or diameter) of the upper or lower frame column 21 and larger than the diameter of the fixing hole 233, so that the plug-in column 232 can be limited and fixed when it is installed in place in the fixing hole 233.

[0097] Optionally, the upper and lower surfaces of the connection plate 231 are respectively welded and fixed to the frame columns 21 of the upper prefabricated room module and the frame columns 21 of the lower prefabricated room module.

[0098] After the connection plates 231 are respectively welded to the upper and lower frame columns 21, not only the connection strength of the upper and lower frame columns 21 can be strengthened, but also the connection can be sealed to prevent concrete leakage from the connection.

[0099] In practical applications, a groove may be provided at the edge of the connection plate 231 to facilitate welding with the upper and lower frame columns 21 .

[0100] The embodiment of the present invention also provides a modular building, such as Fig.15 As shown, the modular building comprises: at least one prefabricated room module 100 as described above, concrete cast on site in the frame columns and floor slab bodies of the prefabricated room module 100, and concrete flowing into the cast-in-place area of ​​the semi-cast wall when pouring the frame columns and floor slab bodies. It should be noted that Fig.15 In the figure, cast-in-place concrete is represented by a short-line fill pattern.

[0101] Since the embodiment of the present invention is a light steel thin-walled concrete composite structure and belongs to a modular building system, the modular building finally constructed based on the prefabricated room module 100 needs to include not only the prefabricated room module 100 prefabricated in advance in the factory, but also the concrete poured into the prefabricated room module 100 after the construction site, that is, the concrete cast in the frame column and the floor slab body, and the concrete flowing into the cast-in-place area of ​​the semi-cast wall through the through hole, so as to obtain a modular building with a light steel thin-walled concrete composite structure. It should be noted that after the prefabricated room module 100 is processed and prefabricated in the factory, it can be placed on the construction site by hoisting and transportation for concrete pouring.

[0102] The modular building provided in the embodiment of the present invention is more standardized because the prefabricated room modules 100 used are manufactured in the factory. Secondly, the modular building with a light steel frame concrete composite structure is also more suitable for building scenarios such as low-rise residential buildings, village houses and civil buildings. In addition, in the modular building provided in the embodiment of the present invention, by reserving a cast-in-place area and pouring concrete for the second time, each building component forms an overall structure with stronger rigidity. Therefore, the modular building not only has high bearing capacity and rigidity, but also has good seismic resistance, fire resistance and corrosion resistance. Compared with steel modular buildings, the modular building provided in the embodiment of the present invention is mainly subjected to combined structure stress, which can further reduce the amount of steel used and save construction costs.

[0103] An embodiment of the present invention also provides a construction method for a modular building, comprising the following steps: placing prefabricated room modules on the same floor in place by hoisting, pouring concrete into the frame columns and floor slab bodies of the prefabricated room modules, and allowing the concrete to flow into the cast-in-place area of ​​the semi-cast wall through the through holes on the frame columns and frame beams, so that the prefabricated room modules that have been placed in place gradually form a modular building.

[0104] The prefabricated room modules transported to the construction site are placed at their corresponding preset positions using hoisting equipment. For example, the prefabricated room modules on the first floor are placed at the corresponding positions on the first floor, and the prefabricated room modules on the second floor are stacked on the upper layer of the prefabricated room modules on the first floor, etc. Fig.15 As shown. The embodiment of the present invention can pour concrete on the prefabricated room modules that have been put in place. For example, when a prefabricated room module is placed by hoisting, the frame columns of the prefabricated room module can be poured with concrete, so that the cast-in-place areas on both sides of the frame columns and the semi-cast walls are poured with concrete, and then the frame columns and the semi-cast walls gradually form a whole. When the adjacent prefabricated room modules on the same floor are all put in place, the floor slab body of the prefabricated room module can be poured with concrete, so that the cast-in-place areas at the top of the floor slab body, frame beams and semi-cast walls are poured with concrete, and then the floor slab, frame beams and semi-cast walls gradually form a whole. It should be noted that the adjacent prefabricated room modules on the same floor can be horizontally connected through the concrete poured in the floor slab body, so that multiple adjacent prefabricated room modules on the same floor form a whole in the horizontal direction.

[0105] The construction method provided in the embodiment of the present invention is implemented for prefabricated room modules. At the construction site, only the prefabricated room modules need to be hoisted and concrete poured. All or most of the small component hoisting, scaffolding and construction support erection work can be cancelled. There is no need to support the concrete formwork, tie and weld the steel bars on site, which can greatly reduce the number of construction personnel required on the construction site, while reducing the difficulty of on-site construction and improving the construction speed and efficiency. In addition, the construction method does not require additional reinforcement and connection procedures for the floor slab body, frame body and semi-cast wall in the prefabricated room module. It only needs to pour concrete into the frame column and the floor slab body according to the original procedure to achieve a more stable connection between the three. The construction method is simple.

[0106] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technical solution that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A prefabricated room module, characterized in that: include: A semi-cast wall (1), a frame body (2) without cast concrete, and a floor slab body (3) without cast concrete; The frame body (2) comprises a frame column (21) and a frame beam (22), and the frame column (21) and the frame beam (22) are both provided with a through hole (20) for allowing cast-in-place concrete to flow into the semi-cast wall (1); The semi-cast wall (1) comprises a pre-cast area (11) where a thermal insulation material has been cast and a cast-in-place area (12) where concrete has not been cast. The cast-in-place area (12) is used to accommodate concrete flowing in through the through hole (20) when the frame column (21) and the floor slab body (3) are cast on site.

2. The prefabricated room module according to claim 1, characterized in that The cast-in-place area (12) includes a side area and a top area of ​​the semi-cast wall (1); the side area is used to accommodate concrete flowing in when the frame column (21) is cast on site, and the top area is used to accommodate concrete flowing in through the frame beam (22) when the floor slab body (3) is cast on site.

3. The prefabricated room module according to claim 1, characterized in that: The semi-cast wall (1) comprises: opposite inner wall panels (13) and outer wall panels (14), a keel system (15) sandwiched between the inner wall panels (13) and the outer wall panels (14), and the thermal insulation material contained in the precast area (11).

4. The prefabricated room module according to claim 3, characterized in that The keel system (15) comprises a top keel (151), a ground keel (152), a transverse keel (153), a longitudinal keel (154) and a side longitudinal keel (155); The area above the transverse keel (153) along the height direction of the semi-cast wall (1), and the area between the edge longitudinal keel (155) and the longitudinal keel (154) adjacent to the edge longitudinal keel (155) along the horizontal direction of the semi-cast wall (1) are both the cast-in-place area (12); The area surrounded by the longitudinal keels (154) adjacent to the edge longitudinal keels (155), the transverse keels (153) and the ground keels (152) is the precast area (11).

5. The prefabricated room module according to claim 1, characterized in that: The thermal insulation material is foamed concrete.

6. The prefabricated room module according to claim 1, characterized in that The frame column (21) is provided with a plurality of through holes (20) along the height direction on the side wall facing the interior of the semi-cast wall (1); and the frame beam (22) is provided with a plurality of through holes (20) along the horizontal direction at the top and bottom.

7. The prefabricated room module according to claim 1, characterized in that The frame beam (22) is a C-shaped steel beam or a box-shaped steel beam.

8. The prefabricated room module according to claim 1, characterized in that The frame column (21) is an L-shaped steel column.

9. The prefabricated room module according to claim 8, characterized in that The cross-sectional shape of the frame column (21) is a closed shape or an open shape.

10. The prefabricated room module according to claim 1, characterized in that Also includes: Plug-in assembly (23); The plug-in assembly (23) comprises a connecting plate (231) and a plug-in column (232); the connecting plate (231) is provided with a plurality of fixing holes (233); the plug-in column (232) passes through the fixing holes (233) and is fixed to the connecting plate (231); the upper and lower surfaces of the connecting plate (231) are respectively connected to the frame columns (21) to which the upper and lower adjacent prefabricated room modules are connected; the portion of the plug-in column (232) located on one side of the connecting plate (231) extends into the frame column (21) of the lower layer, and the portion of the plug-in column (232) located on the other side of the connecting plate (231) extends into the frame column (21) of the upper layer.

11. The prefabricated room module according to claim 10, characterized in that The frame columns (21) connected to the adjacent prefabricated room modules on the upper and lower floors are all L-shaped steel columns, and the connecting plate (231) is configured as an L-shaped plate corresponding to the cross-sectional shape of the frame column (21).

12. The prefabricated room module according to claim 10, characterized in that The connecting plate (231) comprises a connecting area (231a), a first extending area (231b) and a second extending area (231c), wherein the first extending area (231b) and the second extending area (231c) are respectively connected to the connecting area (231a), so that the connecting plate (231) is L-shaped; The fixing hole (233) is provided on the first extension area (231b), and / or the fixing hole (233) is provided on the second extension area (231c), and / or the fixing hole (233) is provided on the connection area (231a).

13. The prefabricated room module according to claim 12, characterized in that The number of the plug-in columns (232) is set to be multiple and the same as the number of the fixing holes (233); or, the number of the plug-in columns (232) is set to be multiple and less than the number of the fixing holes (233); or, the number of the plug-in columns (232) is set to be one.

14. The prefabricated room module according to claim 13, characterized in that Based on the fact that the number of the plug-in columns (232) is set to be plural and less than the number of the fixing holes (233), a fixing hole (233) without a plug-in column (232) is provided between two adjacent plug-in columns (232).

15. The prefabricated room module according to claim 14, characterized in that The number of fixing holes (233) on the first extension area (231b) is two, the number of fixing holes (233) on the second extension area (231c) is two, the number of fixing holes (233) on the connection area (231a) is one; and the number of the plug-in columns (232) is three.

16. The prefabricated room module according to any one of claims 10 to 15, characterized in that Along the length direction of the plug-in column (232), a plurality of connecting holes (232a) for concrete to pass through are arranged on the side wall of the plug-in column (232).

17. The prefabricated room module according to claim 16, characterized in that Based on the cross-section of the plug-in column (232) being set to be rectangular, the connecting holes (232a) are provided on two opposite side walls of the plug-in column (232); or, the connecting holes (232a) are provided on all four side walls of the plug-in column (232).

18. The prefabricated room module according to claim 16, characterized in that The communicating hole (232a) is a circular hole, a waist-shaped hole, a rectangular hole or a trapezoidal hole.

19. The prefabricated room module according to any one of claims 10 to 15, characterized in that: The fixing hole (233) is a rectangular hole or a circular hole, and the cross section of the plug-in column (232) is set to be a corresponding rectangle or circle.

20. The prefabricated room module according to any one of claims 10 to 15, characterized in that There is a clearance fit between the plug-in column (232) and the fixing hole (233).

21. The prefabricated room module according to any one of claims 10 to 15, characterized in that The plug-in column (232) is welded and fixed on the connecting plate (231); and / or, A limiting portion is provided on the outer side wall of the plug-in column (232); when the plug-in column (232) is fixed to the connecting plate (231), the limiting portion abuts against a portion of the connecting plate (231) at the periphery of the fixing hole (233) to limit the plug-in column (232) from falling off from the fixing hole (233).

22. A modular building, characterized in that: include: At least one prefabricated room module (100) as claimed in any one of claims 1 to 21, concrete cast on site in the frame columns and floor slab bodies of the prefabricated room module (100), and concrete flowing into the cast-in-place area of ​​the semi-cast wall when pouring the frame columns and floor slab bodies.

23. A method for constructing a modular building as claimed in claim 22, characterized in that: include: The prefabricated room modules on the same floor are placed in place by hoisting, and concrete is poured into the frame columns and floor slab bodies of the prefabricated room modules. The concrete flows into the cast-in-place area of ​​the semi-cast wall through the through holes on the frame columns and frame beams, so that the prefabricated room modules that have been placed in place gradually form the modular building.

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