Prefabricated modular basement construction device and construction method

Abstract

The invention relates to the technical field of basement construction, and particularly discloses a prefabricated modular basement construction device and a construction method.The prefabricated modular basement construction device comprises an enclosure structure, a plurality of supporting column assemblies installed in the enclosure structure and floor assemblies installed on the supporting column assemblies; the enclosure structure comprises a peripheral assembly and a prefabricated inner wall plate which is installed on the peripheral assembly and matched with the peripheral assembly to form a cavity. The supporting column assembly is installed in the cavity. The peripheral assembly comprises a plurality of groups of corner columns which are vertically arranged, a plurality of groups of connecting columns which are arranged between two adjacent groups of corner columns and are vertically arranged, and prefabricated wall protection plates which are arranged between the adjacent connecting columns and / or the corner columns; a pouring cavity used for pouring concrete to form a cast-in-place wall plate is formed in the side, close to the prefabricated inner wall plate, of the prefabricated wall protection plate. The method has excellent effects in the aspects of improving the construction efficiency, enhancing the structural stability, optimizing the waterproof performance, improving the construction quality, improving the resource utilization efficiency and enhancing the design adaptability.

Description

Technical Field

[0001] The present invention relates to the technical field of basement construction, and more particularly to a prefabricated modular basement construction device and a construction method. Background Art

[0002] In modern construction projects, basements, as an important part of buildings, undertake important functions such as storage, parking and installation of mechanical equipment. With the expansion of building scale and the increase of depth, higher requirements are put forward for the construction technology of basements. Traditional basement construction methods mostly use cast-in-place concrete structures. This method has problems such as long construction period, high labor intensity and uncertain construction period. In addition, the existing construction methods are difficult to guarantee the requirements for waterproof performance, especially in areas with abundant groundwater, where the problems of water seepage and leakage in basements are more prominent.

[0003] In order to improve construction efficiency and quality, prefabricated modular construction technology has gradually been introduced into the field of basement construction; prefabricated modular construction technology effectively shortens the construction period, reduces the complexity of on-site construction, and improves the accuracy and quality of construction by prefabricating components in the factory and assembling them quickly on site. At the same time, prefabricated modular construction technology can also improve the waterproof performance of the basement. Through reasonable design and configuration of waterproof measures, the risk of groundwater infiltration can be reduced and the overall durability of the basement can be improved.

[0004] However, prefabricated basement construction methods have been proposed in the prior art, but these methods often have problems such as high technical difficulty, long construction period and high cost. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a prefabricated modular basement construction device and construction method;

[0006] The solution adopted by the present invention to solve the technical problem is:

[0007] A prefabricated modular basement construction device includes a housing structure, a plurality of support column assemblies installed in the housing structure, and a floor slab assembly installed on the support column assemblies;

[0008] The enclosure structure comprises a peripheral component, a prefabricated inner wall panel installed on the peripheral component and cooperating with the peripheral component to form a cavity; the support column component is installed in the cavity;

[0009] The peripheral components include a plurality of groups of vertically arranged corner columns, a plurality of groups of vertically arranged connecting columns arranged between two adjacent groups of corner columns, and prefabricated wall panels arranged between adjacent connecting columns and / or corner columns;

[0010] The prefabricated wall panel is provided with a pouring cavity for pouring concrete to form a cast-in-place wall panel on one side close to the prefabricated inner wall panel.

[0011] In some possible implementations, a first grouting groove is provided on one side of the prefabricated wall panel close to the connecting column or corner column; a first grouting hole connected to the first grouting groove and a second grouting hole connected to the injection cavity are provided on the top of the prefabricated wall panel.

[0012] In some possible implementations, a plurality of groups of convex prisms are vertically arranged in the perfusion cavity and divide the perfusion cavity into small cavities; second slurry guide holes are arranged on the convex prisms to connect two adjacent small cavities; and a steel mesh is arranged in the perfusion cavity.

[0013] In some possible implementations, the connecting columns and corner columns are located close to slots provided on the prefabricated wall panels, and the prefabricated wall panels are plugged into and fit into the slots.

[0014] In some possible implementations, the support column assembly includes a steel column arranged vertically and a cast-in-place column which is sleeved outside the steel column and has a ring-shaped cross-section; and the floor slab assembly is installed on the cast-in-place column.

[0015] In some possible embodiments, the floor slab assembly includes multiple groups of prefabricated main beams whose ends are embedded in cast-in-place columns or cast-in-place wall panels and cooperate to form a supporting frame, secondary beam assemblies connected to the prefabricated main beams and located in the supporting frame, cast-in-place floor slabs arranged on the secondary beam assemblies, prefabricated prestressed floor slabs installed on the cast-in-place floor slabs, and waterproof layers arranged on the prefabricated prestressed floor slabs.

[0016] A construction method of the prefabricated modular basement construction device described above, based on a reverse construction method, specifically comprises the following steps:

[0017] Step S1: construction of enclosure structure;

[0018] Step S2: constructing steel columns in the support column assembly within the enclosure structure;

[0019] Step S3: excavating the first underground floor and constructing the floor slab assembly of the first underground floor on the supporting column assembly;

[0020] Step S4: Repeat steps S2 and S3 to perform underground multi-layer construction in sequence;

[0021] Step S5: basement floor construction;

[0022] Step S6: Perform waterproofing construction on the basement floor and each floor slab assembly to form a waterproof layer.

[0023] In some possible implementations, step S1 specifically includes the following steps:

[0024] Step S11: constructing guide walls and forming grooves;

[0025] Step S12: constructing the corner column and the connecting column in the groove by static pressure, so that the corner column and the connecting column are inserted into the groove;

[0026] Step S13: The prefabricated wall panels are hoisted and inserted into adjacent corner columns and / or connecting columns to form a whole.

[0027] In some possible implementations, step S3 specifically includes the following steps:

[0028] Step S31: excavating the corresponding earthwork of the underground layer in the enclosure structure and performing cast-in-place column construction;

[0029] Step S32: Install the prefabricated main beams and prefabricated interior wall panels on the first underground floor;

[0030] Step S33: pouring concrete into the pouring cavity to form a cast-in-place wall panel;

[0031] Step S34: installing beam components and constructing cast-in-place floor slabs in sequence within the support frame;

[0032] Step S35: Install the prefabricated prestressed floor slab on the cast-in-place floor slab and before the concrete of the cast-in-place floor slab begins to set.

[0033] In some possible implementations, step S5 specifically refers to: after all floor slab components are constructed, the bottom surface of the basement is compacted, a steel mesh is laid on the bottom surface, and a precast concrete floor is fixedly installed on the steel mesh to form a basement floor.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] The invention has high construction efficiency: the prefabricated modular design can greatly reduce the time and complexity of on-site construction; the prefabricated wall panels, prefabricated interior wall panels, prefabricated concrete floors and prefabricated prestressed floor slabs are produced in the factory, and only need to be assembled and fixed on site, which significantly improves the construction speed; during the on-site construction process, precise assembly and connection can effectively avoid construction errors and improve the quality stability of the overall basement;

[0036] The present invention has strong structural stability: the overall basement is set as a multi-story structure, and the stability and bearing capacity of the structure are effectively improved by the coordinated use of cast-in-place floor slabs and cast-in-place columns; the combination of steel columns and cast-in-place columns ensures the uniform distribution of vertical loads, thereby enhancing the seismic performance and safety of the basement;

[0037] The present invention has excellent waterproof performance: a perfusion cavity is formed between the prefabricated wall panel and the prefabricated inner wall panel, and the grouting technology is adopted. The design of the first grouting groove and the second grouting groove effectively improves the waterproof performance. The optimized design of the grouting holes and the grouting guide holes can ensure the uniform distribution of the grouting material, thereby achieving a better waterproof effect and reducing the risk of groundwater infiltration;

[0038] The invention has high resource utilization efficiency: it can minimize the amount of on-site concrete pouring and construction waste, optimize resource utilization, and reduce environmental impact; the standardized production and transportation of prefabricated siding panels, prefabricated interior wall panels, prefabricated concrete floors, and prefabricated prestressed floor slabs also help reduce the waste of building materials;

[0039] The present invention has strong adaptability: the system can flexibly adjust the configuration of prefabricated components according to the needs of different basements, can adapt to various basement design requirements, and improve the flexibility of design and the adaptability of construction;

[0040] In summary, the prefabricated modular basement construction components and construction methods of the present invention show superior effects in improving construction efficiency, enhancing structural stability, optimizing waterproof performance, improving construction quality, improving resource utilization efficiency and enhancing design adaptability, and have broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a structural schematic diagram of the present invention;

[0042] Figure 2 It is a schematic diagram of the structure of the corner column, the connecting column and the prefabricated wall panel in the present invention;

[0043] Figure 3 It is a structural schematic diagram of the prefabricated wallboard in the present invention;

[0044] Figure 4 It is a structural schematic diagram of the support column assembly and the floor slab assembly in the present invention;

[0045] Among them: 1. Enclosure structure; 11. External components; 111. Corner column; 112. Connecting column; 113. Prefabricated wall panel; 1131. Pouring cavity; 1132. First grouting groove; 1133. First grouting hole; 1134. Second grouting hole; 1135. First grouting hole; 1136. Convex prism; 11361. Second grouting hole; 12. Prefabricated interior wall panel; 13. Cast-in-place wall panel; 2. Support column assembly; 21. Steel column; 22. Cast-in-place column; 3. Floor assembly; 31. Prefabricated main beam; 32. Secondary beam assembly; 33. Prefabricated prestressed floor; 4. Bottom plate structure; 41. Cast-in-place concrete layer; 42. Prefabricated concrete slab. DETAILED DESCRIPTION

[0046] 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 body; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. The "first", "second" and similar words mentioned in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "one" and other similar words do not indicate a quantity restriction, but indicate the existence of at least one. In the implementation of this application, "and / or" describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" refers to two or more. For example, multiple positioning columns refer to two or more positioning columns. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] The present invention is described in detail below.

[0048] like Figure 1-Figure 4 As shown:

[0049] A prefabricated modular basement construction device comprises a housing structure 1, a plurality of support column assemblies 2 installed in the housing structure 1, and a floor slab assembly 3 installed on the support column assemblies 2;

[0050] The enclosure structure 1 includes a peripheral component 11, a prefabricated inner wall panel 12 installed on the peripheral component 11 and cooperating with the peripheral component 11 to form a cavity; the support column component 2 is installed in the cavity;

[0051] The peripheral assembly 11 includes a plurality of groups of vertically arranged corner columns 111, a plurality of groups of vertically arranged connecting columns 112 arranged between two adjacent groups of corner columns 111, and prefabricated wall panels 113 arranged between adjacent connecting columns 112 and / or corner columns 111;

[0052] The prefabricated wall panel 113 is provided with a pouring cavity 1131 on one side close to the prefabricated interior wall panel 12 for pouring concrete to form the cast-in-place wall panel 13 .

[0053] Specifically, the concrete is waterproof concrete, and the cast-in-place wall panels formed have good waterproof performance;

[0054] The enclosure structure 1 is equivalent to a retaining wall, providing basic protection for the basement, preventing the soil layer from collapsing inwards and preventing water from seeping into the soil layer during construction, etc. The inner side of the peripheral structure is fixedly installed with a prefabricated inner wall panel 12;

[0055] The prefabricated interior wall panels 12 are used to provide a supporting structure for each floor of the basement, and are also convenient for decorative construction of the interior walls of the basement;

[0056] A cast-in-place wall panel 13 is provided between the prefabricated interior wall panel 12 and the prefabricated wall panel 113 to further provide additional support structure and protection between each floor of the basement;

[0057] Furthermore, the bottom layer of the basement is also provided with a floor structure 4, which includes a cast-in-place concrete layer 41 and a precast concrete floor 42 arranged on the cast-in-place concrete layer 41; the cast-in-place concrete layer 41 is used as the foundation layer of the bottom layer of the basement, providing support and isolation, and the upper end of the cast-in-place concrete layer 41 is provided with a precast concrete floor 42, which provides a stable ground for the bottom floor of the basement, facilitating later construction works such as waterproofing;

[0058] The supporting column assembly 2 provides support for the overall structure. The floor assembly 3 of each layer is supported by the supporting column assembly. Two adjacent groups of floor assemblies 3 together form a basement. The floor assembly 3 of the lowest layer and the precast concrete floor 42 together form the lowest basement.

[0059] In some possible implementations, a first grouting groove 1132 is provided on one side of the prefabricated wall panel 113 close to the connecting column 112 or the corner column 111; a first grouting hole 1133 communicating with the first grouting groove 1132 and a second grouting hole 1134 communicating with the injection cavity 1131 are provided on the top of the prefabricated wall panel 113;

[0060] A plurality of groups of convex prisms 1136 are arranged vertically in the perfusion cavity and divide the perfusion cavity 1131 into small cavities; a second slurry guide hole 11361 is arranged on the convex prism 1136 to connect two adjacent small cavities;

[0061] The connecting column 112 and the corner column 111 are provided with slots near the prefabricated wall panel 113, and the prefabricated wall panel 113 is plugged into the slots to form a first grouting groove 1132 between the prefabricated wall panel 113 and the slots; a first grouting hole 1135 is provided on the prefabricated wall panel 113 to connect the first grouting groove 1132 with the injection cavity 1131.

[0062] A first grouting groove 1132 is provided on one side of the prefabricated wall panel 113 close to the corner column 111 or the connecting column 112. A first grouting hole 1133 is provided through the top of the prefabricated wall panel 113. A first grouting guide hole 1135 extending horizontally and communicating with the first grouting hole 1133 is provided. The first grouting guide hole 1135 is used to guide the waterproof concrete in the first grouting hole 1133 into the first grouting groove 1132.

[0063] A perfusion cavity 1131 is provided on one side of the prefabricated wall panel 113 close to the prefabricated inner wall panel 12. A number of groups of convex prisms 1136 are fixedly arranged in the perfusion cavity 1131. The convex prisms 1136 are provided with second slurry guiding holes 11361 which are horizontally arranged. A number of groups of second grouting holes 1134 communicating with the small cavity are also provided on the top surface of the prefabricated wall panel 113. The second grouting holes 1134 are used to introduce the waterproof concrete in the second grouting holes 1134 into the perfusion cavity 1131.

[0064] The perfusion cavity 1131 is in a groove structure, and a number of transverse steel bars are fixedly connected in its notch. The transverse steel bars are all fitted with the convex prisms 1136. Longitudinal steel bars are respectively fixedly connected in the second grouting grooves between the convex prisms 1136. The longitudinal steel bars and the transverse steel bars are welded and fixed to form a steel mesh.

[0065] After injecting the waterproof concrete, the perfusion cavity 1131 and the outer soil layer are tightly filled. Among them, the convex prisms 1136 can increase the contact area with the waterproof concrete, improve the connection strength between the waterproof concrete and the prefabricated wall panel 113. The steel mesh can be combined with the waterproof concrete to form a composite material, improve the overall strength of the waterproof concrete, improve the overall strength of the prefabricated wall panel 113, and further improve the anti-seepage ability.

[0066] Furthermore, the connecting column 112 is an I-shaped steel channel. Corner columns 111 are respectively installed at the corner positions of the overall basement. The corner columns 111 position the corner positions of the entire basement, providing the main support and stability at the corners. Combining grooves are respectively opened on the adjacent side surfaces of the corner columns 111 for facilitating the installation of the prefabricated wall panel 113. A number of I-shaped steel channels are arranged between the combining grooves of the adjacent corner columns 111. "C"-shaped grooves are respectively arranged on both sides of the I-shaped steel channels for fitting and fixing the two sides of the prefabricated wall panel 113, improving the overall structural stability. The corner columns 111 and the adjacent I-shaped steel channels, and between the adjacent two groups of I-shaped steel channels are respectively connected by the prefabricated wall panel 113 to form a continuous enclosing wall surface.

[0067] In some possible implementation manners, the support column assembly 2 includes a steel column 21 arranged vertically and a cast-in-place column 22 with an annular cross-section sleeved outside the steel column 21; the floor slab assembly 3 is installed on the cast-in-place column 22.

[0068] The internal space of the integral basement is fixedly connected with a number of vertically arranged steel columns 21 to provide support for the overall structure. Cast-in-place columns 22 are arranged on the periphery of the steel columns 21 to provide additional support and stability for the steel columns 21, and at the same time provide an installation and fixing structure for the floor slab components 3 of each floor. A number of horizontally arranged floor slab components 3 are fixedly connected between the cast-in-place columns 22. The floor slab components 3 of each layer respectively form the ground of the upper layer and the top surface of the lower layer, that is, the adjacent floor slab components 3 together form each basement, and the floor slab components 3 of the lowest layer and the precast concrete floor together form the basement of the lowest layer.

[0069] In some possible embodiments, the floor slab assembly 3 includes a plurality of groups of prefabricated main beams 31 whose ends are embedded in cast-in-place columns 22 or cast-in-place wall panels 13 and cooperate to form a supporting frame, a secondary beam assembly 32 connected to the prefabricated main beams 31 and located in the supporting frame, a cast-in-place floor slab arranged on the secondary beam assembly 32, a prefabricated prestressed floor slab 33 installed on the cast-in-place floor slab, and a waterproof layer arranged on the prefabricated prestressed floor slab 33.

[0070] The floor assembly 3 includes a prefabricated main beam 31, a secondary beam assembly 32, a cast-in-place floor, and a prefabricated prestressed floor 33. Both ends of the prefabricated main beam 31 are fixedly connected to the cast-in-place column 22 and / or the cast-in-place wall panel 13, and a plurality of prefabricated main beams 31 mutually form a support frame, which is used to support each floor of the basement. The secondary beam assembly 32 is fixedly connected to the support frame by bolts, and the secondary beam assembly 32 and the prefabricated main beam 31 jointly support the cast-in-place floor.

[0071] The secondary beam assembly 32 and the supporting frame are both embedded and connected in the cast-in-place floor slab, which is used to provide the main load-bearing surface of the floor. The prefabricated prestressed floor slab 33 is fixedly connected to the upper end of the secondary beam assembly 32 by bolts to enhance the bearing capacity and stability of the floor slab. The prefabricated prestressed floor slab 33 is paved with a waterproof membrane to provide waterproof protection. A waterproof protective layer is cast on the waterproof membrane to increase the durability and protection of the waterproof layer.

[0072] During construction, the construction steps are as follows:

[0073] 1. Installation and construction of enclosure structure 1:

[0074] The first step is the guide wall construction. A guide ditch of a certain depth is excavated along the outermost land of the basement. Steel mesh is tied on both sides of the guide ditch. Two sets of parallel supporting formworks are installed in the middle. The formworks are fixed to each other. The guide wall concrete is poured in the guide ditch on the side where the formworks are separated. After the concrete is completely solidified, the formworks and their fixings are removed.

[0075] The second step is to use a grab bucket or an underground continuous wall excavator or other engineering machinery to dig a trench of a certain depth along the guide wall. The trench depth is less than the design depth of the retaining structure 1, and the trench width is equal to or slightly less than the cross-sectional width of the retaining structure 1;

[0076] Step 3: After the trench construction is completed, the corner columns 111 are vertically pressed into the trench in sequence at the corners of the trench by static pressure, and then I-shaped channel steels are inserted into the trenches between the corner columns 111 according to the designed spacing, and the I-shaped channel steels are vertically pressed into the trench in static pressure;

[0077] The fourth step is to lift the prefabricated wall panels 113 using a lifting device, and insert the prefabricated wall panels 113 between adjacent corner columns 111 and / or I-shaped channel steels, and press the prefabricated wall panels 113 into the grooves by static pressure;

[0078] 2. Installation and construction of floor slab assembly 3:

[0079] In the first step, a plurality of steel columns 21 are driven into the soil in the retaining structure 1;

[0080] The second step is to gradually excavate the soil in the enclosure structure 1 from the inside to the outside, and the excavation depth is the depth of the first floor (-1 floor) of the basement. In this process, the steel column 21 exposed on the surface is tied with a steel mesh, and the template is fixed on the outside. The cast-in-place column 22 is formed by pouring concrete, and the prefabricated main beam 31 is fixedly installed at the upper and lower ends of the cast-in-place column 22 until the soil of the basement layer is completely excavated. Then, the steel mesh is fixedly installed on the inner side of the prefabricated wall panel 113, and the prefabricated inner wall panel 12 is fixed by the steel mesh. After that, concrete of the same grade as the prefabricated inner wall panel 12 is poured between the prefabricated inner wall panel 12 and the prefabricated wall panel 113. After the concrete is cured, a cast-in-place wall panel 13 is formed between the prefabricated inner wall panel 12 and the prefabricated wall panel 113;

[0081] The pouring of the cast-in-place wall panel 13 is specifically as follows: waterproof concrete is injected through the first grouting hole 1133, the waterproof concrete is injected into the first grouting groove 1132 through the first grouting hole 1135, waterproof concrete is injected through the second grouting hole 1134, and the waterproof concrete is injected into the small cavity through the second grouting hole 11361;

[0082] Finally, the prefabricated main beam 31 is fixed between the cast-in-place column 22 outside the edge and the prefabricated inner wall panel 12, so that the prefabricated main beam 31 of the whole layer forms a supporting frame;

[0083] The third step is to first fix and install the secondary beam assemblies 32 in the support frame, then fix the steel mesh between the lower end of the support frame formed by the prefabricated main beam 31 and the secondary beam assembly 32, fix the support plate at the lower end of the steel mesh, and the lower end of the support plate is fixedly connected to the bottom surface of the foundation pit with a support rod, and then pour concrete on the top of the support frame to form a cast-in-place floor after solidification, and then fix the prefabricated prestressed floor slab 33 on the upper end of the secondary beam assembly 32 before the concrete is initially set, and the construction of the floor assembly 3 can be completed;

[0084] In the fourth step, the floor slab components 3 above the second floor (-2 floor), the third floor (-3 floor), etc. are constructed and installed in sequence by the above method until the last floor. First, the ground of the lowest layer of the basement is compacted. For basements with anti-floating requirements, anti-floating anchor rods should be constructed first, and then a steel mesh is laid on the bottom surface of the basement. The precast concrete floor 42 is fixedly installed on the upper end of the steel mesh, and concrete is poured between the foundation pit floor and the precast concrete floor to form the lowest surface structure.

[0085] 3. Waterproof construction:

[0086] After completing the above steps, waterproof membrane is laid on each floor of the basement, and then a waterproof protective layer is poured on the upper end of the waterproof membrane to complete the construction of the overall structure of the basement.

[0087] In the present invention, at least one earthwork outlet is reserved on each floor slab assembly 3 in the basement, and construction materials can be transported through the earthwork outlet.

[0088] In the present invention, the supporting frames are respectively formed with the cast-in-place columns 22 as nodes, and a plurality of rectangular or square frames are sequentially formed, the secondary beam assemblies 32 are respectively fixedly connected in the formed rectangular or square frames, and the prefabricated prestressed floor slabs 33 are also installed in the rectangular or square frames;

[0089] In the same rectangular or square frame, several prefabricated prestressed floor slabs 33 need to be fixed separately, and the prefabricated prestressed floor slabs 33 are connected to each other through tongue and groove.

[0090] In the present invention, by injecting waterproof concrete into the first grouting groove 1132, the two sides of the prefabricated wall panel 113 can form a strict waterproof structure with the I-shaped channel steel or the corner column 111 respectively, thereby improving the anti-water seepage ability of the basement. The waterproof concrete is injected through the second grouting hole 1134, and the waterproof concrete is injected into the second grouting groove through the second grouting hole 11361. At this time, the waterproof concrete can make the prefabricated wall panel 113 tightly combined with the outer soil layer, avoiding the subsidence of the soil layer caused by the gap between the soil layers.

[0091] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A prefabricated modular basement construction device, characterized in that: It includes a housing structure, a plurality of support column assemblies installed in the housing structure, and a floor slab assembly installed on the support column assemblies; The enclosure structure comprises a peripheral component, a prefabricated inner wall panel installed on the peripheral component and cooperating with the peripheral component to form a cavity; the support column component is installed in the cavity; The peripheral components include a plurality of groups of vertically arranged corner columns, a plurality of groups of vertically arranged connecting columns arranged between two adjacent groups of corner columns, and prefabricated wall panels arranged between adjacent connecting columns and / or corner columns; The prefabricated wall panel is provided with a pouring cavity for pouring concrete to form a cast-in-place wall panel on one side close to the prefabricated inner wall panel.

2. A prefabricated modular basement construction device according to claim 1, characterized in that: A first grouting groove is arranged on one side of the prefabricated wall panel close to the connecting column or the corner column; a first grouting hole connected to the first grouting groove and a second grouting hole connected to the injection cavity are arranged on the top of the prefabricated wall panel.

3. A prefabricated modular basement construction device according to claim 2, characterized in that: A plurality of groups of convex prisms are arranged vertically in the perfusion cavity and divide the perfusion cavity into small cavities; a second slurry guide hole connecting two adjacent small cavities is arranged on the convex prism; and a steel mesh is arranged in the perfusion cavity.

4. A prefabricated modular basement construction device according to claim 2, characterized in that: The connecting columns and the corner columns are close to the slots provided on the prefabricated wall panels, and the prefabricated wall panels are plugged and matched with the slots.

5. The prefabricated modular basement construction device according to claim 1, characterized in that: The support column assembly comprises a steel column arranged in the vertical direction and a cast-in-place column which is sleeved on the outside of the steel column and has a ring-shaped cross section; the floor slab assembly is installed on the cast-in-place column.

6. A prefabricated modular basement construction device according to claim 5, characterized in that: The floor slab assembly includes a plurality of groups of prefabricated main beams whose ends are embedded in cast-in-place columns or cast-in-place wall panels and cooperate to form a supporting frame, a secondary beam assembly connected to the prefabricated main beams and located in the supporting frame, a cast-in-place floor slab arranged on the secondary beam assembly, a prefabricated prestressed floor slab installed on the cast-in-place floor slab, and a waterproof layer arranged on the prefabricated prestressed floor slab.

7. A construction method of a prefabricated modular basement construction device according to any one of claims 1 to 6, characterized in that: Based on the reverse construction method, the following steps are specifically included: Step S1: construction of enclosure structure; Step S2: constructing steel columns in the support column assembly within the enclosure structure; Step S3: excavating the first underground floor and constructing the floor slab assembly of the first underground floor on the supporting column assembly; Step S4: Repeat steps S2 and S3 to perform underground multi-layer construction in sequence; Step S5: basement floor construction; Step S6: Perform waterproofing construction on the basement floor and each floor slab assembly to form a waterproof layer.

8. The construction method of a prefabricated modular basement construction device according to claim 7, characterized in that: The step S1 specifically includes the following steps: Step S11: constructing guide walls and forming grooves; Step S12: constructing the corner column and the connecting column in the groove by static pressure, so that the corner column and the connecting column are inserted into the groove; Step S13: The prefabricated wall panels are hoisted and inserted into adjacent corner columns and / or connecting columns to form a whole.

9. The construction method of a prefabricated modular basement construction device according to claim 7, characterized in that: The step S3 specifically comprises the following steps: Step S31: excavating the corresponding earthwork of the underground layer in the enclosure structure and performing cast-in-place column construction; Step S32: Install the prefabricated main beams and prefabricated interior wall panels on the first underground floor; Step S33: pouring concrete into the pouring cavity to form a cast-in-place wall panel; Step S34: installing beam components and constructing cast-in-place floor slabs in sequence within the support frame; Step S35: Install the prefabricated prestressed floor slab on the cast-in-place floor slab and before the concrete of the cast-in-place floor slab begins to set.

10. The construction method of a prefabricated modular basement construction device according to claim 7, characterized in that: The step S5 specifically refers to: after all floor slab components are constructed, the bottom surface of the basement is compacted, a steel mesh is laid on the bottom surface, and a precast concrete floor is fixedly installed on the steel mesh to form the basement floor.

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