Fabricated superimposed concrete modular building

Abstract

The utility model relates to an assembly type superimposed concrete modular building, belongs to the technical field of assembly type buildings, and solves the problem that a modular building in the prior art is heavy in weight or small in usable area due to the thickness of an inner wall. The prefabricated composite concrete shear wall comprises multiple layers of prefabricated composite concrete module units, the multiple prefabricated composite concrete module units on each layer are arranged in rows, each prefabricated composite concrete module unit comprises an outer wall plate, an inner wall plate and a partition wall plate, the outer wall plate is a heat-preservation integrated single-face composite concrete shear wall plate, and the inner wall plate is a heat-preservation integrated single-face composite concrete shear wall plate. The inner wall plate is a single-face laminated concrete shear wall plate, the inner wall plate comprises a second post-pouring concrete layer, and the inner wall plate of the prefabricated laminated concrete module unit and the partition wall plate of the adjacent prefabricated laminated concrete module unit on the same layer are connected through the second post-pouring concrete layer. The modularized building is light in weight and thin in inner wall, the indoor usable area is increased, meanwhile, the problems of heat preservation hollowing, cracking, falling and the like can be effectively solved, and the service life of the heat preservation layer is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated buildings, in particular to a prefabricated composite concrete modular building. Background Technique

[0002] A modular building is a building form that uses prefabricated modular units produced in a factory and transported to the construction site for assembly. It has the advantages of fast construction speed, good engineering quality, less labor consumption, energy conservation and environmental protection. Modular buildings have been widely used in many countries and regions, and have gradually begun to be researched and applied in China in recent years.

[0003] The types of modular units include steel structure modules, concrete modules, wood structure modules and composite structure modules, among which steel structure modules and concrete modules are more widely used in projects. Due to the characteristics of light weight, high strength and convenient connection of steel structure modules, they are widely used in the construction of multi-storey and high-rise buildings. However, steel structure modules have deficiencies in comfort and fire resistance performance. When used as residential buildings, the acceptance by users is relatively low, and the steel consumption is large, resulting in poor economy. Concrete modules have better fire resistance performance, heat insulation and sound insulation performance, as well as greater stiffness. When applied to residential buildings, the living comfort is relatively high, the acceptance by users is high, and the economy is relatively better than that of steel structure modules. However, the existing concrete module technology still has the following problems: 1) The module weight is relatively large; 2) Due to the need for module assembly, the thickness of the interior wall of the building is relatively large, affecting the usable area. Content of the Utility Model

[0004] In view of the above analysis, the embodiment of the utility model aims to provide a prefabricated composite concrete modular building to solve the problems of large weight of the existing modular building or small usable area caused by the thick interior wall.

[0005] The purpose of the utility model is mainly realized by the following technical solutions:

[0006] A prefabricated composite concrete modular building includes prefabricated composite concrete module units arranged in multiple layers. A plurality of the prefabricated composite concrete module units on each layer are arranged in a row. The prefabricated composite concrete module unit includes an exterior wall panel, an interior wall panel and a partition wall panel. The exterior wall panel is an integrated thermal insulation single-sided composite concrete shear wall panel, the interior wall panel is a single-sided composite concrete shear wall panel, and the interior wall panel includes a second post-cast concrete layer. The interior wall panels of the prefabricated composite concrete module units on the same layer and the partition wall panels of the adjacent prefabricated composite concrete module units are connected through the second post-cast concrete layer.

[0007] Further, the exterior wall panel includes a first inner leaf panel, a thermal insulation panel and a first post-cast concrete layer, and the first inner leaf panel and the thermal insulation panel are respectively located on both sides of the first post-cast concrete layer.

[0008] Furthermore, first truss bars are provided in the first post-cast concrete layer, one side of the first truss bars is embedded in the first inner leaf panel, and first distribution bars are provided in the first inner leaf panel.

[0009] Furthermore, the precast concrete composite module unit further includes first connecting bars, one end of the first connecting bars is arranged in the first post-cast concrete layer of the upper precast concrete composite module unit, and the lower ends of the first connecting bars are arranged in the first post-cast concrete layer of the lower precast concrete composite module unit.

[0010] Furthermore, the inner wall panel further includes a second inner leaf panel, and the second inner leaf panel is located on one side of the second post-cast concrete layer.

[0011] Furthermore, second truss bars are provided in the second post-cast concrete layer, one side of the second truss bars is embedded in the second inner leaf panel, and second distribution bars are provided in the second inner leaf panel.

[0012] Furthermore, the precast concrete composite module unit further includes second connecting bars, one end of the second connecting bars is arranged in the second post-cast concrete layer of the upper precast concrete composite module unit, and the lower ends of the second connecting bars are arranged in the second post-cast concrete layer of the lower precast concrete composite module unit.

[0013] Furthermore, a post-cast concrete beam is further included, the post-cast concrete beam is arranged at the top of adjacent partition wall panels, and beam bars are provided in the post-cast concrete beam.

[0014] Furthermore, the precast concrete composite module unit further includes a top plate and a bottom plate, the top plate adopts a truss bar composite slab, a single-layer steel mesh is provided in the bottom plate, and a post-cast composite concrete floor slab is provided between the bottom plate of the upper precast concrete composite module unit and the top plate of the lower precast concrete composite module unit, and third truss bars are provided in the post-cast composite concrete floor slab.

[0015] Furthermore, both the first inner leaf panel and the second inner leaf panel are precast concrete inner leaf panels, and / or

[0016] A door opening is provided on the inner wall panel, a window opening is provided on the outer wall panel, and the precast concrete composite module unit further includes a back lining, and the back lining is arranged on the outer side of the insulation board.

[0017] Compared with the prior art, the utility model can at least achieve one of the following beneficial effects:

[0018] (1) The exterior wall panels and interior wall panels of the precast composite concrete module units of the present utility model both adopt single-sided composite concrete shear wall panels. Compared with fully precast or double-sided composite shear wall precast components, the weight can be effectively reduced by more than 50%, making the component weight light, reducing the production and transportation costs, and reducing the tower crane rental costs. At the same time, the splicing method of traditional adjacent module interior walls is prone to cause excessive wall thickness at the splicing part, forming a "double wall" for the interior walls, which affects the usable area within the unit. However, in the present utility model, for the splicing of adjacent module units, one side is a single-sided composite concrete shear wall panel (i.e., the interior wall panel), and the other side is the partition wall panel of the adjacent module unit. Concrete is poured into the cavity between the two side wall panels to form a shear wall, which can achieve a reduction in wall thickness.

[0019] (2) The connection between the module units of the present utility model adopts the traditional cast-in-place method, and the steel bar connection adopts lapping or mechanical connection. Compared with the sleeve grouting connection method commonly used in fully precast shear walls, the installation efficiency is high. Compared with double-sided composite walls, the cavity size is larger, and the space for steel bar connection is larger, which is easy to control the construction quality and can avoid the construction quality problems of steel bar connection caused by the quality of workers or improper management.

[0020] (3) The wall panels of the module units of the present utility model can all be used as templates during the construction process, reducing the erection of on-site templates. The thermal insulation is installed in place at the same time, and the subsequent pasting process is also eliminated, improving the construction and installation efficiency and reducing the template and labor costs.

[0021] (4) The exterior wall panels of the present utility model adopt the technology of integrating thermal insulation and structure. After pouring concrete into the cavity, the thermal insulation layer and the structure layer are completely bonded, which can effectively solve problems such as thermal insulation hollowing, cracking, and falling off, and improve the service life of the thermal insulation.

[0022] In the present utility model, the above-mentioned various technical solutions can also be combined with each other to achieve more preferred combined solutions. Other features and advantages of the present utility model will be described in the subsequent content. Moreover, some advantages can be made obvious from the description or understood by implementing the present utility model. The purpose and other advantages of the present utility model can be achieved and obtained through the content specifically pointed out in the text and the drawings. Description of the Drawings

[0023] The drawings are only for the purpose of showing specific embodiments and are not considered as a limitation to the present utility model. Throughout the drawings, the same reference signs represent the same components.

[0024] Figure 1 It is a schematic structural diagram of an assembled composite concrete modular building for a specific embodiment;

[0025] Figure 2 It is a schematic plan structure diagram of a precast composite concrete module unit for a specific embodiment;

[0026] Figure 3 For the specific embodiment Figure 2 Schematic diagram of the A-A section in

[0027] Figure 4 Schematic diagram of the exterior wall assembly for the specific embodiment;

[0028] Figure 5 Schematic diagram of the interior wall assembly for the specific embodiment;

[0029] Figure 6 Schematic diagram of the assembly of the modular unit structural beam and the non-load-bearing wall part for the specific embodiment.

[0030] Reference numerals:

[0031] 1 - Prefabricated composite concrete modular unit; 11 - Exterior wall panel; 111 - First inner leaf panel; 112 - Insulation board; 113 - First post-cast concrete layer; 1131 - First truss reinforcement; 114 - Window opening; 12 - Interior wall panel; 121 - Second inner leaf panel; 122 - Second post-cast concrete layer; 1221 - Second truss reinforcement; 123 - Door opening; 13 - Partition wall panel; 14 - First connecting reinforcement; 15 - Second connecting reinforcement; 16 - Roof slab; 17 - Floor slab; 18 - Post-cast composite concrete floor slab; 181 - Third truss reinforcement; 2 - Post-cast concrete beam; 21 - Beam reinforcement; 22 - Beam formwork. Detailed implementation manners

[0032] The following will specifically describe the preferred embodiments of the present invention with reference to the accompanying drawings. The accompanying drawings form a part of the present invention and are used together with the embodiments of the present invention to explain the principle of the present invention, rather than to limit the scope of the present invention.

[0033] A specific embodiment of the present invention, in combination with Figure 1 , Figure 2 and Figure 5 as shown, discloses a prefabricated composite concrete modular building, which includes a plurality of prefabricated composite concrete modular units 1. The prefabricated composite concrete modular units 1 are arranged in multiple layers up and down, and a plurality of prefabricated composite concrete modular units 1 in each layer are arranged in rows. The prefabricated composite concrete modular unit 1 includes an exterior wall panel 11, an interior wall panel 12 and a partition wall panel 13. The exterior wall panel 11 is a heat-insulating integrated single-sided composite concrete shear wall panel, and the interior wall panel 12 is a single-sided composite concrete shear wall panel. The interior wall panel 12 of the prefabricated composite concrete modular unit 1 in the same layer is connected to the partition wall panel 13 of the adjacent prefabricated composite concrete modular unit 1 through the second post-cast concrete layer 122.

[0034] Compared with the prior art, for the prefabricated composite concrete module building provided in this embodiment, the exterior wall panel 11 and the interior wall panel 12 of the precast composite concrete module unit 1 both adopt single-sided composite concrete shear wall panels, which can effectively reduce the weight by more than 50% compared with fully precast or double-sided composite shear wall precast components, making the component weight light, reducing the production and transportation costs, and reducing the tower crane rental cost. At the same time, the splicing method of the traditional adjacent module interior walls is likely to cause an excessive wall thickness at the splicing part, forming a "double wall" for the interior walls, which affects the usable area within the unit. However, in this embodiment, for the splicing of the adjacent module unit interior walls, one side is a single-sided composite concrete shear wall panel (i.e., the interior wall panel 12), and the other side is the partition wall panel 13 of the adjacent module unit. Concrete is poured into the cavity between the two side wall panels to form a shear wall, which can achieve a reduction in the wall thickness.

[0035] Combined Figure 3 and Figure 4 As shown, the exterior wall panel 11 adopts a single-sided composite shear wall panel with integrated thermal insulation, which specifically includes a first inner leaf panel 111, a thermal insulation panel 112, and a first post-cast concrete layer 113. The first inner leaf panel 111 is a precast concrete inner leaf panel, and the first inner leaf panel 111 and the thermal insulation panel 112 are respectively located on both sides of the first post-cast concrete layer 113. The first post-cast concrete layer 113 is provided with first truss bars 1131. One side of the first truss bars 1131 is embedded in the first inner leaf panel 111.

[0036] It should be noted that the first post-cast concrete layer 113 is formed by post-cast concrete. There is a cavity left between the first inner leaf panel 111 and the thermal insulation panel 112. One side of the vertically arranged first truss bars 1131 is pre-embedded in the first inner leaf panel 111, and the concrete is poured into the cavity between the first inner leaf panel 111 and the thermal insulation panel 112 to form the first post-cast concrete layer 113, so that the first inner leaf panel 111, the thermal insulation panel 112, and the first post-cast concrete layer 113 form an integral whole (the precast layer and the post-cast concrete layer are laminated to form a wall). This exterior wall panel 11 can achieve the integration of external thermal insulation and the structure. For the existing thermal insulation layer, it still needs to be pasted later in the factory or on-site, which may cause problems such as hollowing, cracking, and peeling. However, for the exterior wall panel 11 in this embodiment, after pouring concrete into the cavity, the thermal insulation layer and the structural layer are completely bonded, which can effectively solve problems such as thermal insulation hollowing, cracking, and peeling, and improve the service life of the thermal insulation.

[0037] Preferably, the thickness of the first inner leaf panel 111 is 50 mm, and it is internally provided with first distribution steel bars.

[0038] It should be noted that the precast composite concrete module unit 1 further includes a back rib (not shown in the figure). The back rib is provided on the outer side of the insulation board 112. The back rib, the insulation board 112 and the first inner leaf board 111 are connected together by tie bolts. The back rib is used as a formwork during the casting of the cavity concrete, and the back rib and the tie bolts are removed after the post-cast concrete is completed; the insulation board 112, the back rib and the first inner leaf board 111 are connected by a temporary tooling (such as tie bolts) to form an integral body to ensure safety during hoisting, transportation and installation.

[0039] To ensure the reliability of the connection between the upper and lower precast composite concrete module units 1, as Figure 4 shown, the precast composite concrete module unit 1 further includes a first connecting steel bar 14. One end of the first connecting steel bar 14 is provided in the first post-cast concrete layer 113 of the upper precast composite concrete module unit 1, and the lower end of the first connecting steel bar 14 is provided in the first post-cast concrete layer 113 of the lower precast composite concrete module unit 1.

[0040] As Figure 5 shown, the inner wall panel 12 includes a second inner leaf board 121 and a second post-cast concrete layer 122. The second inner leaf board 121 is a precast concrete inner leaf board, and the second inner leaf board 121 is located on one side of the second post-cast concrete layer 122. The second post-cast concrete layer 122 is provided with second truss steel bars 1221. One side of the second truss steel bars 1221 is embedded in the second inner leaf board 121.

[0041] It should be noted that the second post-cast concrete layer 122 is formed by post-cast concrete. There is a cavity between the second inner leaf board 121 and the adjacent partition wall panel 13. One side of the vertically arranged second truss steel bars 1221 is embedded in the second inner leaf board 121, and the concrete is cast in the cavity between the second inner leaf board 121 and the adjacent partition wall panel 13 to form the second post-cast concrete layer 122, so that the second inner leaf board 121 and the second post-cast concrete layer 122 form an integral body (the precast layer and the post-cast concrete layer are laminated to form a wall).

[0042] Preferably, the thickness of the second inner leaf board 121 is 50 mm, and second distribution steel bars are provided inside.

[0043] To ensure the reliability of the connection between the upper and lower precast composite concrete module units 1, as Figure 5 shown, the precast composite concrete module unit 1 further includes a second connecting steel bar 15. One end of the second connecting steel bar 15 is provided in the second post-cast concrete layer 122 of the upper precast composite concrete module unit 1, and the lower end of the second connecting steel bar 15 is provided in the second post-cast concrete layer 122 of the lower precast composite concrete module unit 1.

[0044] Preferably, the partition wall panel 13 is made of ordinary concrete or lightweight concrete, and has a thickness of 30-50 mm. The partition wall panel 13 can also be made of UHPC (Ultra-High Performance Concrete) or RPC (Reactive Powder Concrete) to further reduce the thickness of the partition wall panel 13, so as to increase the cavity size between adjacent partition wall panels 13, and the equipment pipelines are placed in this cavity.

[0045] In order to connect adjacent precast composite concrete module units 1, as shown in Figure 1 and Figure 6 , the prefabricated composite concrete modular building further includes a cast-in-place concrete beam 2, the cast-in-place concrete beam 2 is arranged on the top of adjacent partition wall panels 13, and beam steel bars 21 are arranged in the cast-in-place concrete beam 2. It should be noted that a beam formwork 22 is required during the formation of the cast-in-place concrete beam 2, and the beam formwork 22 is arranged on the partition wall panel 13 and can be removed after the cast-in-place concrete.

[0046] As shown in Figure 3 , Figure 4 , Figure 5 and Figure 6 , the precast composite concrete module unit 1 further includes a top plate 16 and a bottom plate 17. The top plate 16 is a truss-reinforced composite slab, and the stress-bearing steel bars can be ordinary steel bars or prestressed steel bars. The thickness of the top plate 16 is 50-60 mm, and the structural floor and roof slab are formed after the cast-in-place composite layer concrete is poured. The bottom plate 17 is a concrete slab, and a single-layer steel mesh is arranged in the bottom plate 17. The thickness of the bottom plate 17 is 30-50 mm.

[0047] As shown in Figure 3 , Figure 4 and Figure 5 , a cast-in-place composite concrete floor slab 18 is arranged between the bottom plate 17 of the upper precast composite concrete module unit 1 and the top plate 16 of the lower precast composite concrete module unit 1, and third truss steel bars 181 are arranged in the cast-in-place composite concrete floor slab 18.

[0048] Understandably, as shown in Figure 2 , a door opening 123 is provided on the inner wall panel 12, and a window opening 114 is provided on the outer wall panel 11.

[0049] Transport the precast composite concrete module unit 1 to the site, and after assembly, pour the concrete of the first cast-in-place concrete layer 113, the second cast-in-place concrete layer 122, and the cast-in-place composite concrete floor slab 18 to connect adjacent precast composite concrete module units 1 together.

[0050] The connections between the modular units in this embodiment adopt the traditional in-situ construction method. The steel bar connections adopt lapping or mechanical connections, which have higher installation efficiency compared with the sleeve grouting connection method commonly used in fully precast shear walls. Compared with double-sided composite walls, the cavity size is larger, providing more space for steel bar connections, making it easier to control the construction quality and avoiding construction quality problems of steel bar connections caused by the quality of workers or improper management.

[0051] The wall panels of the existing modules are only used as templates for casting concrete on-site, and formwork still needs to be set up on-site, which affects the construction efficiency. However, the wall panels of the modular units in this embodiment can all be used as templates during the construction process, reducing the formwork setup on-site. The insulation is installed in place at the same time, eliminating the subsequent pasting process, improving the construction and installation efficiency, and reducing the formwork and labor costs.

[0052] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An assembled composite concrete modular building, characterized in that, It includes precast composite concrete module units (1) arranged in multiple layers. A plurality of the precast composite concrete module units (1) in each layer are arranged in rows. The precast composite concrete module unit (1) includes an exterior wall panel (11), an interior wall panel (12), and a partition wall panel (13). The exterior wall panel (11) is a heat-insulation integrated single-sided composite concrete shear wall panel. The interior wall panel (12) is a single-sided composite concrete shear wall panel. The interior wall panel (12) includes a second post-cast concrete layer (122). The interior wall panels (12) of the precast composite concrete module units (1) in the same layer are connected to the partition wall panels (13) of adjacent precast composite concrete module units (1) through the second post-cast concrete layer (122).

2. The prefabricated composite concrete modular building according to claim 1, wherein The exterior wall panel (11) includes a first inner leaf panel (111), a heat-insulation panel (112), and a first post-cast concrete layer (113). The first inner leaf panel (111) and the heat-insulation panel (112) are respectively located on both sides of the first post-cast concrete layer (113).

3. The prefabricated composite concrete modular building according to claim 2, wherein A first truss steel bar (1131) is provided in the first post-cast concrete layer (113). One side of the first truss steel bar (1131) is embedded in the first inner leaf panel (111). First distribution steel bars are provided in the first inner leaf panel (111).

4. The prefabricated composite concrete modular building according to claim 2, wherein The precast composite concrete module unit (1) further includes a first connecting steel bar (14). One end of the first connecting steel bar (14) is provided in the first post-cast concrete layer (113) of the upper precast composite concrete module unit (1), and the lower end of the first connecting steel bar (14) is provided in the first post-cast concrete layer (113) of the lower precast composite concrete module unit (1).

5. The prefabricated composite concrete modular building according to any one of claims 2-4, characterized in that, The interior wall panel (12) further includes a second inner leaf panel (121). The second inner leaf panel (121) is located on one side of the second post-cast concrete layer (122).

6. The prefabricated composite concrete modular building according to claim 5, characterized in that, A second truss steel bar (1221) is provided in the second post-cast concrete layer (122). One side of the second truss steel bar (1221) is embedded in the second inner leaf panel (121). Second distribution steel bars are provided in the second inner leaf panel (121).

7. The prefabricated composite concrete modular building according to claim 5, characterized in that, The precast composite concrete module unit (1) further includes a second connecting steel bar (15). One end of the second connecting steel bar (15) is provided in the second post-cast concrete layer (122) of the upper precast composite concrete module unit (1), and the lower end of the second connecting steel bar (15) is provided in the second post-cast concrete layer (122) of the lower precast composite concrete module unit (1).

8. The prefabricated composite concrete modular building according to any one of claims 1-4, 6-7, characterized in that, It further includes a post-cast concrete beam (2). The post-cast concrete beam (2) is provided at the top of adjacent partition wall panels (13). Beam steel bars (21) are provided in the post-cast concrete beam (2).

9. The prefabricated composite concrete modular building according to any one of claims 1-4, 6-7, characterized in that The precast composite concrete module unit (1) further includes a top plate (16) and a bottom plate (17). The top plate (16) is a truss-reinforced composite slab, and a single-layer steel mesh is provided in the bottom plate (17). A cast-in-place composite concrete floor slab (18) is provided between the bottom plate (17) of the upper precast composite concrete module unit (1) and the top plate (16) of the lower precast composite concrete module unit (1), and third truss reinforcement bars (181) are provided in the cast-in-place composite concrete floor slab (18).

10. The prefabricated composite concrete modular building according to claim 5, characterized in that, The first inner leaf (111) and the second inner leaf (121) are both precast concrete inner leaves, and / or A door opening (123) is provided on the inner wall panel (12), and a window opening (114) is provided on the outer wall panel (11). The precast composite concrete module unit (1) further includes a back lining, and the back lining is provided on the outer side of the insulation board (112).

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