Floor splicing modular integrated system and construction method thereof

Abstract

The present invention discloses a modular integrated system for splicing floor slabs and a construction method thereof. The system comprises a prefabricated module unit and a spliced ​​prefabricated panel. The prefabricated module unit and the spliced ​​prefabricated panel are alternately arranged at the same structural layer. The prefabricated module unit comprises a side wall and a fully prefabricated top panel. The middle of the connecting edge between the spliced ​​prefabricated panel and the fully prefabricated top panel is provided with an outer convex bite key arranged at intervals along the length direction of the panel edge. The middle of the connecting edge between the fully prefabricated top panel and the spliced ​​prefabricated panel is provided with a convex-concave bite key engaged with the outer convex bite key. The interlocking gap between the outer convex bite key and the convex-concave bite key is filled with high-strength grouting material. Grooves corresponding to each other are respectively provided within the range of 1 / 4 of the side length on both sides of the connecting edge between the spliced ​​prefabricated panel and the fully prefabricated top panel. Horizontal connecting steel bars are arranged in the grooves and filled with high-strength grouting material. Under the premise of ensuring the structural stress performance, the present application reduces the amount of "wet" work of on-site pouring, improves efficiency, has good structural integrity, and high installation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated buildings, in particular to concrete modular integrated buildings suitable for low-rise, multi-story or small-high-rise buildings, and specifically to a floor slab splicing modular integrated system and a construction method thereof. Background Art

[0002] Modular integrated construction technology has the advantages of fast on-site construction speed and high integration of all disciplines. The building plane is divided into multiple hexahedral boxes, which are manufactured in the factory, and the mechanical, electrical and interior decoration operations are integrated into the boxes in the factory. After the boxes are transported to the site, they can be quickly installed. Compared with steel structure modular integration technology, concrete modular integration technology has also begun to be used in low-rise and high-rise residential buildings due to its better thermal insulation and sound insulation performance.

[0003] The main technical problems in the application process are as follows:

[0004] (1) In my country's current prefabricated shear wall structure specifications, in order to ensure the deformation coordination of prefabricated structural walls under earthquake action, the vertical joints between prefabricated structural walls are often connected by grouting with cast-in-place edge components and horizontal steel anchor rings (cables). During the installation process, problems such as steel bar collision and anchor ring avoidance frequently occur, resulting in low construction efficiency and unreliable construction quality.

[0005] (2) One of the traditional methods of directly assembling modular prefabricated units is to use 2-6 cm thick prefabricated formwork to form the wall cavity and then pour the wall concrete on site. The formwork on both sides is only used as a template for pouring concrete on the wall and does not provide the structure with resistance to horizontal forces such as earthquakes and wind loads. After the construction is completed, it "occupies" the usable space of the building. The second method of directly assembling traditional modular prefabricated units is to use fully prefabricated wall modules arranged back to back to form a double-layer wall between each module. The double-layer wall cannot resist the lateral force as a whole, so its thickness is often too thick, which also "occupies" the effective usable space of the building.

[0006] (3) The traditional modular prefabricated unit is directly assembled. When burying water and electricity pipelines in the prefabricated modules, there is almost no gap between the modules, making it difficult to connect the pipelines on site.

[0007] (4) The top plate of the traditional modular unit is made of reinforced truss composite plate, and the top plates of each floor module are connected by post-casting composite layer concrete. On the one hand, the top plate and side walls need to be prefabricated and assembled separately during the production of modular units, which takes a long production cycle; on the other hand, the curing time after the on-site floor slab concrete pouring also limits the further improvement of the installation speed.

[0008] (5) The existing Chinese invention patent application with application number 201710632012.X discloses an earthquake-resistant prefabricated floor slab and an earthquake-resistant floor slab joint structure. The four sides of the prefabricated slab are completely connected by dovetail joints. Although this can ensure the effective transmission of the internal forces in the floor slab plane, it does not consider the effective connection measures between the floor slab and the wall. When the four sides of the prefabricated slab with larger sizes are provided with butt joints, the corners of the prefabricated slab are often difficult to accurately position due to production and installation errors, and sometimes even need to manually cut off part of the dovetail joints before installation.

[0009] Although the above-mentioned existing technologies can realize the integrated production of internal parts of the module, there are still various problems in the production and installation process, which fail to fully reflect the advantages of industrialized construction and are not in line with the development concept of energy conservation and environmental protection. Summary of the invention

[0010] The present invention provides a floor slab splicing modular integrated system suitable for low-rise, multi-story or small high-rise buildings and a construction method thereof. Under the premise of ensuring the stress-bearing performance of the structure, the workload of on-site concrete pouring is reduced, the efficiency is improved, the material properties are fully utilized, the structure has good integrity, and the installation efficiency is high.

[0011] The technical problems to be solved are: the existing concrete modular structure has many wet operations in on-site connection, the installation speed is restricted by concrete pouring, and the utilization rate of formwork wall materials is low.

[0012] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0013] The floor slab splicing modular integrated system of the present invention comprises prefabricated module units and spliced ​​prefabricated panels, wherein the prefabricated module units and the spliced ​​prefabricated panels are alternately arranged at the same structural layer;

[0014] The prefabricated module unit includes two, three or four side walls and a fully prefabricated top plate, wherein the side walls include prefabricated structural walls and filling walls, and the prefabricated structural walls and the fully prefabricated top plate are formed in one piece or prefabricated and assembled in blocks; the spliced ​​prefabricated plate and the fully prefabricated top plate are connected by partial splicing;

[0015] The connecting edges of the spliced ​​prefabricated panels and the fully prefabricated top panels are provided with corresponding grooves within the range of 1 / 4 of the side length on both sides, the grooves are spaced 100mm to 300mm apart, and the length of the grooves from the edge of the panels is 250mm to 700mm. Horizontal connecting steel bars are arranged in the grooves and filled with high-strength grouting materials.

[0016] The connection between the spliced ​​prefabricated panel and the full prefabricated top panel is provided with an outer convex bite key arranged at intervals along the panel edge direction, the outermost side length of the outer convex bite key is greater than the root side length, the outer convex bite key is provided with a reinforcing bar hole, the reinforcing bar hole is provided with a reinforcing bar, one end of the reinforcing bar extends to the lower prefabricated structural wall and is connected to the prefabricated structural wall; the connection between the full prefabricated top panel and the spliced ​​prefabricated panel is provided with a convex-concave bite key that is engaged with the outer convex bite key, and the interlocking gap between the outer convex bite key and the convex-concave bite key is filled with high-strength grouting material;

[0017] The lower end of the prefabricated structural wall of the prefabricated module unit located at the upper layer is connected to the connecting steel bars extending from the prefabricated module unit at the lower layer, and is connected by grouting sleeves or constrained grout anchors with double-row bars or large-diameter single-row bars replaced with equal areas.

[0018] The floor splicing modular integrated system of the present invention further comprises a prefabricated module unit which also includes a prefabricated bottom plate, which is located at the bottom of the side wall and is prefabricated and formed integrally with the prefabricated structural wall or cast in batches.

[0019] The floor slab splicing modular integrated system of the present invention further comprises: holes on at least one of the prefabricated structural walls of the prefabricated module unit, and filling walls are provided at the holes.

[0020] The floor splicing modular integrated system of the present invention further has one or more combinations of water supply and drainage, HVAC and electromechanical pipelines integrated inside at least one of the side walls, the fully prefabricated top plate and the prefabricated bottom plate.

[0021] The floor splicing modular integrated system of the present invention further comprises at least two rows of prefabricated module units and spliced ​​prefabricated panels, the prefabricated structural walls of the two rows of prefabricated module units are not connected, and the fully prefabricated top panels of the two adjacent rows of prefabricated module units are partially spliced ​​and connected;

[0022] Two adjacent rows of spliced ​​prefabricated panels are connected by local splicing.

[0023] The floor splicing modular integrated system of the present invention, further, the outer convex bite key is provided with upper and lower double layers of structural steel bars along its outer edge, and the structural steel bars are anchored in the corresponding spliced ​​prefabricated panel or the fully prefabricated top panel; the edge of the reinforcement hole is provided with tie bars, and the tie bars are arranged in a U shape, and their ends are anchored in the spliced ​​prefabricated panel.

[0024] The floor slab splicing modular integrated system of the present invention further has arc angles or flat angles at the front end positive angle and the root negative angle of the convex bite key.

[0025] The spliced ​​modular integrated system of floor slabs of the present invention, further, a prefabricated beam is provided at the bottom of the spliced ​​prefabricated panel, the prefabricated beam and the spliced ​​prefabricated panel are cast as one piece or prefabricated separately, a connecting corbel is provided on the prefabricated structural wall, the end of the prefabricated beam is placed on the connecting corbel, and the connecting corbel is provided with connecting ribs inserted into the prefabricated beam.

[0026] The floor slab splicing modular integrated system of the present invention further comprises prefabricated module units, splicing prefabricated panels and prefabricated walls;

[0027] The prefabricated module units include side walls, prefabricated bottom plates and fully prefabricated top plates. The prefabricated module units are arranged horizontally and vertically at intervals. The prefabricated bottom plates of the prefabricated module units located on the upper layer and the fully prefabricated top plates of the prefabricated module units located on the lower layer are connected by partial splicing.

[0028] The prefabricated wall is arranged at the vertical gap between the outermost prefabricated module units, the lower end of the prefabricated wall is provided with a flat section, connected by a grouting sleeve, and the upper end is connected by a local splicing type;

[0029] The spliced ​​prefabricated panels are arranged at the horizontal gaps between the prefabricated module units, and the spliced ​​prefabricated panels are connected to the prefabricated module units or prefabricated walls at corresponding positions by local splicing.

[0030] The present invention provides a construction method, comprising the following steps:

[0031] Step 1: The prefabricated module unit is manufactured and processed in the factory. When the prefabricated module unit is a pentahedral module including side walls and a fully prefabricated top plate, it is cast and formed in one step using a three-dimensional mold; when the prefabricated module unit is a hexahedral module including side walls, a fully prefabricated top plate and a prefabricated bottom plate, the hexahedral module is cast and formed in one piece by the pentahedral module, and the steel bars of the prefabricated bottom plate are reserved at the bottom of the prefabricated structural wall. After the pentahedral module is demolded, the prefabricated bottom plate is cast and manufactured;

[0032] The spliced ​​prefabricated panels and prefabricated beams are processed and manufactured in the factory. During the processing and manufacturing of the above-mentioned components, mechanical and electrical pipelines are reserved and embedded in advance;

[0033] Step 2: Level the floor before installation, lay a mortar layer in advance at the bottom connection of the prefabricated structural wall of the prefabricated module unit, and control the thickness of the mortar layer at the bottom of the prefabricated structural wall according to the floor elevation and the installation completion surface elevation; hoist the prefabricated module unit to 200-300mm above the floor, align and fine-tune the embedded grouting sleeve at the bottom of the prefabricated structural wall and the connecting steel bars on the floor to ensure that all connecting steel bars can be inserted into the embedded grouting sleeve at the bottom of the prefabricated structural wall; after the alignment and adjustment are completed, place the prefabricated module unit on the mortar layer on the floor to complete the installation of the prefabricated module unit;

[0034] Step 3: After the prefabricated module unit is installed in place, another prefabricated module unit is hoisted in accordance with the structural assembly drawing; at the same time, the sleeve grouting operation of the prefabricated structural wall connecting steel bars is carried out, using a single sleeve grouting process;

[0035] If the prefabricated module unit is a hexahedral module, the gap between the prefabricated bottom plate and the lower prefabricated top plate should be grouted during the sleeve grouting construction, so that the prefabricated bottom plate and the lower prefabricated top plate of the prefabricated module unit form the whole floor of this layer; after all the prefabricated module units of this layer are installed in place, the hoisting construction of prefabricated beams and spliced ​​prefabricated panels can be carried out;

[0036] Step 4: When installing the spliced ​​prefabricated panels, position them according to the convex and concave bite keys at the ends of the prefabricated module units to ensure that the outer convex bite keys of the spliced ​​prefabricated panels correspond to the convex and concave bite keys of the full prefabricated top plate, and at the same time, the grooves of the spliced ​​prefabricated panels coincide with the grooves of the full prefabricated panels; place the spliced ​​prefabricated panels in place, and pass the dowels on the prefabricated module units through the dowel holes of the spliced ​​prefabricated panels;

[0037] Step 5: After the spliced ​​prefabricated panels are installed in place, horizontal connecting steel bars are placed in the corresponding grooves of the full prefabricated top plate and the spliced ​​prefabricated panels, and then the bite key joints and grooves between the prefabricated module units and the spliced ​​prefabricated panels are grouting to complete the overall connection between the full prefabricated top plate and the spliced ​​prefabricated panels; the grouting material is a high-strength non-shrinkage grouting material with added steel fiber, and after the grouting is completed, it needs to be cured for about 3-5 hours;

[0038] Step 6: After completing the above steps, the prefabricated module units of the next floor can be installed; the construction of mechanical and electrical pipelines can be started on the floors where the installation has been completed. The mechanical and electrical pipelines pre-buried in the prefabricated module units have connection ports reserved for the mechanical and electrical pipelines at the bottom of the prefabricated structural wall. The mechanical and electrical pipelines of this floor can be quickly connected through the area between the two prefabricated module units, that is, on the floor of the spliced ​​prefabricated panel area.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] 1. In the current prefabricated shear wall structure specifications in my country, in order to ensure the deformation coordination of prefabricated structural walls under earthquake action, the vertical joints between prefabricated structural walls are often connected by grouting with cast-in-place edge components and horizontal steel anchor rings (cables). During the installation process, problems such as steel bar collision and anchor ring avoidance frequently occur, the construction efficiency is low, and the construction quality is unreliable. The present invention avoids the on-site vertical joint splicing between prefabricated structural walls and prefabricated structural walls in the prefabricated modular units by arranging the prefabricated modular units and the spliced ​​prefabricated panels alternately in the plane, reduces the difficulty of on-site connection between prefabricated components, and improves the installation efficiency.

[0041] 2. One of the ways of directly splicing traditional modular prefabricated units is to use prefabricated formwork to form a wall cavity and then cast the wall concrete on site. The formwork on both sides is only used as a template for pouring concrete on the wall, and does not provide the structure to resist horizontal effects such as earthquakes and wind loads. After the construction is completed, it "occupies" the usable space of the building; the second way of directly splicing traditional modular prefabricated units is to use all prefabricated wall modules arranged back to back, and a double-layer wall is formed between each module. The double-layer wall cannot resist the lateral force as a whole, so its thickness is often too thick, which also "occupies" the effective use space of the building. The present invention avoids the use of formwork and double walls by alternating the prefabricated modular units and the spliced ​​prefabricated panels in the plane, maximizes the use of wall materials, has high material utilization efficiency, and a large effective building area.

[0042] 3. In the traditional modular prefabricated unit direct splicing method, when burying water and electricity pipelines in the prefabricated modules, it is difficult to connect the on-site pipelines between modules. The prefabricated module units and the spliced ​​prefabricated panels of the present invention are arranged alternately, which is conducive to the docking and connection construction of electromechanical and equipment pipelines between the prefabricated module units. When the prefabricated module units are provided with prefabricated base plates, the water and electricity pipelines can be pre-buried in the prefabricated base plates in advance, and the laying and connection construction of electromechanical and equipment pipelines can be carried out in the spliced ​​prefabricated panels arranged alternately at intervals, which has a large operating space and convenient and efficient docking.

[0043] 4. The walls and floor slabs of the present invention are all prefabricated components, and there is no need for concrete pouring during on-site installation. The cast-in-place connection is simple, the construction speed is fast, and the construction process is more environmentally friendly.

[0044] 5. The floor slabs in the present invention are connected by a combination of grooved steel bar overlap and snap-key connection, which not only ensures the transmission of internal forces in the vertical and parallel directions of the joints, but also avoids the problem of difficult installation on site when snap-key connections are set on all four sides. The spliced ​​prefabricated panels are pressed on the top surface of the side walls of the module units, and no temporary support is required for the panels. The investment of non-physical materials on site is small, and the installation speed is fast. The spliced ​​prefabricated panels are staggered and pressed on the top surface of the side walls of the module units, and the waterproof performance of the node area is good.

[0045] The present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a three-dimensional axonometric diagram of the main components of the floor splicing modular integrated system of the present invention;

[0047] Figure 2 is a three-dimensional schematic diagram of a prefabricated module unit of the present invention;

[0048] Figure 3 It is a three-dimensional schematic diagram of the spliced ​​prefabricated panel of the present invention;

[0049] Figure 4The present invention Figure 3 Schematic diagram of the structure of the middle and outer convex bite key;

[0050] Figure 5 It is a schematic elevation view of the modular layout of the floor splicing of the present invention;

[0051] Figure 6 It is a schematic diagram of the three-dimensional structure of the prefabricated beam installation of the present invention;

[0052] Figure 7 It is a detailed diagram of the installation connection node of the prefabricated beam of the present invention.

[0053] Figure 8 It is a schematic diagram of the connection between the fully prefabricated top plate and the groove of the spliced ​​prefabricated plate of the present invention;

[0054] Fig. 9 It is a schematic elevation diagram of the spacing arrangement of the pentahedral modules of the present invention;

[0055] Fig.10 It is an exploded view of the spacing arrangement of the pentahedral modules of the present invention;

[0056] Fig.11 It is a schematic elevation diagram of the spacing arrangement of the hexahedral modules of the present invention;

[0057] Fig.12 It is an exploded view of the spacing arrangement of the hexahedral modules of the present invention;

[0058] Fig.13 It is a schematic elevation view of a planar vertical double-spacing arrangement of a hexahedral module of the present invention;

[0059] Fig.14 It is an exploded view of the planar vertical double-spaced arrangement of the hexahedral module of the present invention.

[0060] Reference numerals:

[0061] 1- Prefabricated module unit, 2- Spliced ​​prefabricated panels, 3- Prefabricated beams, 4- Prefabricated walls, 1.1- Prefabricated structural walls, 1.2- Infill walls, 1.3- Fully prefabricated top slabs, 1.4- Prefabricated bottom slabs, 1.5- Inserted bars, 1.6- Connecting steel bars, 1.7- Connecting corbels, 2.1- Externally convex bite keys, 2.2- Inserted bar holes, 2.3- Tie bars, 2.4- Structural steel bars, 2.5- Grooves, 2.6- Horizontal connecting steel bars. DETAILED DESCRIPTION

[0062] Reference Figure 1-Figure 14 The present invention discloses a floor splicing modular integrated system and a construction method thereof. The integrated system includes a prefabricated module unit and a spliced ​​prefabricated panel.

[0063] Embodiment 1:

[0064] The prefabricated module units and the spliced ​​prefabricated panels are alternately arranged on the same structural layer, and the spliced ​​prefabricated panels are connected to the prefabricated module units on both sides.

[0065] The prefabricated module unit includes side walls and a fully prefabricated top plate. The side walls are arranged on two, three or four sides along the contour direction of the fully prefabricated top plate. The side walls include prefabricated structural walls and filling walls. The prefabricated structural walls are formed as a whole with the fully prefabricated top plate or prefabricated and assembled in blocks. One or more of the prefabricated structural walls are provided with holes according to the seismic requirements of the structure. Filling walls are provided in the holes. The filling walls can be ALC strip wall, autoclaved steam concrete block wall or other filling walls flexibly connected to the prefabricated structural wall. The flexible connection here is a common structural measure in wall connection. For example, a gap of 10-20mm is left between the filling wall and the prefabricated structural wall. The thickness of the fully prefabricated top plate is 100mm-200mm, and the thickness of the prefabricated structural wall and the filling wall is 140mm-300mm.

[0066] The thickness of the spliced ​​prefabricated panel is 100-200mm, and its thickness is determined according to the span of the spliced ​​prefabricated panel. It should generally be consistent with the thickness of the full prefabricated top plate. The spliced ​​prefabricated panel and the full prefabricated top plate are connected by local splicing. The spliced ​​prefabricated panel and the full prefabricated top plate are provided with corresponding grooves within 1 / 4 of the length on both sides of the connecting edge of the spliced ​​prefabricated panel and the full prefabricated top plate. The grooves are spaced 100mm~300mm apart, and the length of the grooves is 250mm~700mm from the edge of the connecting edge. Horizontal connecting steel bars are arranged in the grooves and filled with high-strength grouting materials. The spliced ​​prefabricated panel and the prefabricated top plate are connected at both ends of the splicing edge by means of grooves, horizontal connecting steel bars and high-strength grouting materials.

[0067] At the connection between the middle part of the side length of the spliced ​​prefabricated panel and the fully prefabricated top panel, there are convex bite keys arranged at intervals along the panel edge direction. The length of the convex bite keys is 300-800mm, the depth is greater than 80mm, and the spacing is 500mm-900mm; the protruding length of the convex bite keys is not less than half of the thickness of the prefabricated structural wall plus 30mm, and the outer side length is 20mm-50mm longer than the root side length; the arc angle or flat angle with a radius of not less than 10mm at the positive angle at the front end of the convex bite key and the negative angle at the root, and the upper and lower double layers of structural steel bars are arranged along the outer edge of the convex bite key. The diameter of the structural steel bars is not less than 6mm. They are arranged along the contour of the convex bite keys, and the ends of the structural steel bars are anchored into the spliced ​​prefabricated panel.

[0068] A convex-concave bite key that engages with the external convex bite key is provided at the connection between the full prefabricated top plate and the spliced ​​prefabricated plate. There is a gap of 10-30mm between the external convex bite key and the convex-concave bite key. The gap is filled with high-strength grouting material with a strength of not less than 40MPa. The assembly connection between the full prefabricated top plate and the spliced ​​prefabricated plate is achieved through the mortise and tenon cooperation between the external convex bite key and the convex-concave bite key.

[0069] The prefabricated module units and the spliced ​​prefabricated panels are arranged in multiple layers above and below. The lower end of the prefabricated structural wall of the prefabricated module units in the upper layer is connected to the connecting steel bars extending out of the prefabricated structural wall of the prefabricated module units in the lower layer. The grouting sleeves or constrained grouting anchor overlap connections with double-row bars or large-diameter single-row bars with equal area replacement can be used. When sleeve grouting connection is used, the specifications of the grouting sleeves should be selected according to the diameter of the connecting steel bars increased by one level.

[0070] Among them, 1-2 rebar insertion holes with a diameter of not less than 20mm are arranged in the middle of the convex bite key on the spliced ​​prefabricated panel, and a tie bar with a diameter of not less than 6mm is arranged at the edge of each rebar insertion hole. The tie bar is arranged in a U shape, and its end is anchored in the spliced ​​prefabricated panel; the rebar insertion hole is provided with rebar and filled with high-strength grouting material, the lower end of the rebar is anchored in the lower prefabricated structural wall, the insertion length is not less than 15 times the diameter of the steel bar, and the length of the rebar protruding from the lower prefabricated structural wall does not exceed the thickness of the spliced ​​prefabricated panel.

[0071] At least two rows of prefabricated module units and spliced ​​prefabricated panels are arranged, the prefabricated structural walls of the two rows of prefabricated module units are not connected, and local splicing connection is adopted between the full prefabricated top plates of two adjacent rows of prefabricated module units and between two adjacent rows of spliced ​​prefabricated panels. The local splicing connection method is the same as the connection method of the full prefabricated top plates and the spliced ​​prefabricated panels, both of which adopt grooves arranged at intervals within 1 / 4 of the side length at both ends of the connecting edge, and horizontal connecting steel bars and high-strength grouting materials are arranged in the grooves; a bite-fitting convex bite key and a convex-concave bite key are arranged in the middle of the connecting edge for bite connection.

[0072] A prefabricated beam is provided at the bottom of the spliced ​​prefabricated panel. The prefabricated beam and the spliced ​​prefabricated panel are cast as a whole or prefabricated separately. A connecting corbel is provided on the prefabricated structural wall. The end of the prefabricated beam is placed on the connecting corbel. The connecting corbel is provided with connecting ribs inserted into the prefabricated beam.

[0073] In addition, at least one of the side walls and the fully prefabricated top plate has one or more combinations of water supply and drainage, HVAC and electromechanical pipelines integrated inside.

[0074] The present application avoids on-site wall-to-wall connection between prefabricated modules by arranging the module units and the spliced ​​prefabricated panels at intervals within the plane, and avoids the problems of reduced actual building use area and low material utilization rate caused by direct splicing of modules to form double walls; the floor slabs are spliced, and there is no on-site concrete pouring operation, and the on-site installation period is shorter; the spliced ​​connections of the floor slabs are staggered and pressed on the top of the wall, avoiding the problem of water leakage in the traditional prefabricated composite floor slab connections; the spliced ​​connections of the floor slabs can better transmit the shear force in the direction of the plate seams and the tensile force in the direction perpendicular to the plate seams generated in the floor slabs under the action of earthquake and wind loads, thereby ensuring the integrity of the floor slabs.

[0075] Embodiment 2:

[0076] The difference from Example 1 is that the prefabricated module unit also includes a prefabricated bottom plate, which is located at the bottom of the side wall and is prefabricated integrally with the prefabricated structural wall or cast in batches, and a grouting layer is provided between the prefabricated bottom plate of the upper prefabricated module unit and the fully prefabricated top plate of the lower prefabricated module unit.

[0077] At least one of the side walls, the fully prefabricated top slab and the prefabricated bottom slab has one or more combinations of water supply and drainage, HVAC and electromechanical pipelines integrated inside, and the side walls, the fully prefabricated top slab and the prefabricated bottom slab are provided with decorative functional units; the decorative functional units include hard furnishings such as tiles, kitchen and bathroom, wall painting, cabinets, etc.

[0078] The prefabricated modular unit is fully decorated, with high building integration and reduced on-site installation time; the water and electricity pipelines are pre-buried in the prefabricated base plate in advance, and the corresponding pipelines can be laid on-site in the spliced ​​prefabricated panel area, with large operating space, avoiding the problem of pipeline docking caused by direct back-to-back splicing of modules, and the site is convenient and efficient. In this example, the prefabricated base plate is only used as a structural component of the prefabricated module unit and does not serve as a structural floor.

[0079] Embodiment three:

[0080] The difference from the first and second embodiments is that it also includes prefabricated walls, and the prefabricated module units include side walls, prefabricated bottom plates, and fully prefabricated top plates. The prefabricated module units are arranged horizontally and vertically at intervals, and the prefabricated bottom plates of the prefabricated module units located on the upper layer are reinforced and produced according to the structural load-bearing floor slabs, and are locally spliced ​​and connected to the fully prefabricated top plates of the prefabricated module units located on the lower layer during installation. The prefabricated walls are set at the vertical gaps between the outermost prefabricated module units, and the spliced ​​prefabricated panels are set between the top prefabricated module units and the prefabricated walls, so that a closed module is formed between the outermost prefabricated module units. A flat section is set at the lower end of the prefabricated wall and connected by a grouting sleeve. The fully prefabricated top plate of the spliced ​​prefabricated panel and the prefabricated module unit and the upper end of the prefabricated wall are all locally spliced. The local splicing connection is to set grooves at intervals within 1 / 4 of the side length at both ends of the connecting edge, and horizontal connecting steel bars and high-strength grouting materials are set in the grooves; a bite-fitting convex bite key and a convex-concave bite key are set in the middle of the connecting edge for bite connection.

[0081] The prefabricated base plate of the prefabricated modular unit is a load-bearing floor plate. Through horizontal and vertical staggered arrangement, a complete building unit can be assembled using only prefabricated modular units, avoiding double walls and double floors. The material utilization efficiency is high and it is more in line with environmental protection and energy-saving requirements.

[0082] Embodiment 4:

[0083] The construction method comprises the following steps:

[0084] Step 1: The prefabricated module units are manufactured and processed in the factory. The pentahedron module is cast and formed in one go using a three-dimensional mold. On the basis of the integral casting of the pentahedron module, the steel bars of the prefabricated bottom plate are reserved at the bottom of the prefabricated structural wall. After the pentahedron module is demolded, the prefabricated bottom plate is cast and manufactured. Planar components such as spliced ​​prefabricated panels and prefabricated beams are all processed and manufactured in the factory. When processing and manufacturing various components, mechanical and electrical pipelines are reserved and embedded in advance. For the hexahedron module, it can be transported to the construction site after internal integrated decoration in the factory; the pentahedron module includes side walls and a fully prefabricated top plate, and the hexahedron module includes side walls, a prefabricated bottom plate, and a fully prefabricated top plate.

[0085] Step 2: Level the floor before installation, and pre-lay the mortar layer at the bottom connection of the prefabricated structural wall of the prefabricated module unit. The thickness of the mortar layer at the bottom of the prefabricated structural wall is controlled according to the floor elevation and the installation completion surface elevation. Hoist the prefabricated module unit to 200-300mm above the floor, align and fine-tune the embedded grouting sleeve at the bottom of the prefabricated structural wall and the connecting steel bars on the floor to ensure that all connecting steel bars can be inserted into the embedded grouting sleeve at the bottom of the prefabricated structural wall; after the alignment and adjustment are completed, the prefabricated module unit is placed on the mortar layer on the floor to complete the installation of the prefabricated module unit.

[0086] Step 3: After the prefabricated module unit is installed in place, hoist another prefabricated module unit in intervals according to the structural assembly drawing; at the same time, the connection steel sleeve grouting operation of the prefabricated structural wall is carried out, using a single sleeve grouting process. If it is a hexahedral module, the gap between the prefabricated bottom plate and the fully prefabricated top plate of the lower prefabricated module unit should be grouted during the sleeve grouting construction, so that the prefabricated bottom plate and the fully prefabricated top plate of the lower prefabricated module unit form the entire floor of this layer. After all the prefabricated module units of this layer are installed in place, the hoisting construction of prefabricated beams and spliced ​​prefabricated panels can be carried out.

[0087] Step 4: If the spliced ​​prefabricated board has a prefabricated beam at the bottom, the two are cast and formed in one piece in the factory. When installing the spliced ​​prefabricated board, it is positioned according to the convex and concave bite keys at the end of the prefabricated module unit to ensure that the convex bite keys of the spliced ​​prefabricated board correspond to the convex and concave bite keys of the full prefabricated top plate, and the grooves of the spliced ​​prefabricated board coincide with the grooves of the full prefabricated top plate. After the two are all corresponding, the spliced ​​prefabricated board can be put into place, and the dowels on the prefabricated module unit can be passed through the dowel holes of the spliced ​​prefabricated board.

[0088] Step 5: After the spliced ​​prefabricated panels are installed in place, place horizontal connecting steel bars in the corresponding grooves of the full prefabricated top plate and the spliced ​​prefabricated panels, and then grout the concave and convex bite key joints and grooves between the prefabricated module units and the spliced ​​prefabricated panels to complete the overall connection between the full prefabricated top plate and the spliced ​​prefabricated panels. The grouting material is a high-strength non-shrinkage grouting material with added steel fiber, and it needs to be cured for about 3-5 hours after the grouting is completed.

[0089] Step 6: After the above steps are completed, the next floor of prefabricated module units can be installed. The mechanical and electrical pipelines can be constructed on the floors that have been installed. The mechanical and electrical pipelines embedded in the prefabricated module units are reserved with connection ports for the mechanical and electrical pipelines at the bottom of the prefabricated structural wall. The mechanical and electrical pipelines of this floor can be quickly connected through the area between the two prefabricated module units, that is, on the floor of the spliced ​​prefabricated panel area.

[0090] The embodiments described above are merely descriptions of preferred implementation modes of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. Floor splicing modular integrated system, characterized by: It includes prefabricated module units and spliced ​​prefabricated panels, wherein the prefabricated module units and the spliced ​​prefabricated panels are alternately arranged at the same structural layer; The prefabricated module unit includes two, three or four side walls and a fully prefabricated top plate, wherein the side walls include prefabricated structural walls and filling walls, and the prefabricated structural walls and the fully prefabricated top plate are formed in one piece or prefabricated and assembled in blocks; the spliced ​​prefabricated plate and the fully prefabricated top plate are connected by partial splicing; The connecting edges of the spliced ​​prefabricated panels and the fully prefabricated top panels are provided with corresponding grooves within the range of 1 / 4 of the side length on both sides, the grooves are spaced 100mm to 300mm apart, and the length of the grooves from the edge of the panels is 250mm to 700mm. Horizontal connecting steel bars are arranged in the grooves and filled with high-strength grouting materials. The connection between the spliced ​​prefabricated panel and the full prefabricated top panel is provided with an outer convex bite key arranged at intervals along the panel edge direction, the outermost side length of the outer convex bite key is greater than the root side length, the outer convex bite key is provided with a reinforcing bar hole, the reinforcing bar hole is provided with a reinforcing bar, one end of the reinforcing bar extends to the lower prefabricated structural wall and is connected to the prefabricated structural wall; the connection between the full prefabricated top panel and the spliced ​​prefabricated panel is provided with a convex-concave bite key that is engaged with the outer convex bite key, and the interlocking gap between the outer convex bite key and the convex-concave bite key is filled with high-strength grouting material; The lower end of the prefabricated structural wall of the prefabricated module unit located at the upper layer is connected to the connecting steel bars extending from the prefabricated module unit at the lower layer, and is connected by grouting sleeves or restrained grout anchors with double-row bars or large-diameter single-row bars replaced with equal areas; At least one of the prefabricated structural walls of the prefabricated module unit is provided with a hole, and a filling wall is provided at the hole.

2. The floor slab splicing modular integrated system according to claim 1, characterized in that: The prefabricated module unit further comprises a prefabricated bottom plate, which is located at the bottom of the side wall and is prefabricated and formed integrally with the prefabricated structural wall or cast in stages.

3. The floor slab splicing modular integrated system according to claim 2, characterized in that: At least one of the side walls, the fully prefabricated top plate and the prefabricated bottom plate has one or more combinations of water supply and drainage, HVAC and electromechanical pipelines integrated therein.

4. The floor slab splicing modular integrated system according to claim 1, characterized in that: The prefabricated module units and the spliced ​​prefabricated panels are arranged in at least two rows, the prefabricated structural walls of the two rows of prefabricated module units are not connected, and the fully prefabricated top panels of the two adjacent rows of prefabricated module units are connected by partial splicing; Two adjacent rows of spliced ​​prefabricated panels are connected by local splicing.

5. The floor slab splicing modular integrated system according to claim 1, characterized in that: The outer edge of the convex bite key is provided with upper and lower double layers of structural steel bars, and the structural steel bars are anchored in the corresponding spliced ​​prefabricated panels or fully prefabricated top panels; the edge of the reinforcement hole is provided with tie bars, and the tie bars are arranged in a U shape, and their ends are anchored in the spliced ​​prefabricated panels.

6. The floor slab splicing modular integrated system according to claim 1, characterized in that: The front end positive angle and the root negative angle of the convex bite key are provided with arc angles or flat angles.

7. The floor slab splicing modular integrated system according to claim 1, characterized in that: A prefabricated beam is provided at the bottom of the spliced ​​prefabricated panel. The prefabricated beam and the spliced ​​prefabricated panel are cast as one piece or prefabricated separately. A connecting corbel is provided on the prefabricated structural wall. The end of the prefabricated beam is placed on the connecting corbel. The connecting corbel is provided with connecting ribs inserted into the prefabricated beam.

8. The floor slab splicing modular integrated system according to claim 1, characterized in that: Including prefabricated modular units, spliced ​​prefabricated panels and prefabricated walls; The prefabricated module units include side walls, prefabricated bottom plates and fully prefabricated top plates. The prefabricated module units are arranged horizontally and vertically at intervals. The prefabricated bottom plates of the prefabricated module units located on the upper layer and the fully prefabricated top plates of the prefabricated module units located on the lower layer are connected by partial splicing. The prefabricated wall is arranged at the vertical gap between the outermost prefabricated module units, the lower end of the prefabricated wall is provided with a flat section, connected by a grouting sleeve, and the upper end is connected by a local splicing type; The spliced ​​prefabricated panels are arranged at the horizontal gaps between the prefabricated module units, and the spliced ​​prefabricated panels are connected to the prefabricated module units or prefabricated walls at corresponding positions by local splicing.

9. A construction method, comprising the floor slab splicing modular integrated system according to claim 7, characterized in that: The following steps are involved: Step 1: The prefabricated module unit is manufactured and processed in the factory. When the prefabricated module unit is a pentahedral module including side walls and a fully prefabricated top plate, it is cast and formed in one step using a three-dimensional mold; when the prefabricated module unit is a hexahedral module including side walls, a fully prefabricated top plate and a prefabricated bottom plate, the hexahedral module is cast and formed in one piece by the pentahedral module, and the steel bars of the prefabricated bottom plate are reserved at the bottom of the prefabricated structural wall. After the pentahedral module is demolded, the prefabricated bottom plate is cast and manufactured; The spliced ​​prefabricated panels, prefabricated beams and prefabricated walls are processed and manufactured in the factory. During the processing and manufacturing of the above-mentioned components, mechanical and electrical pipelines are reserved and embedded in advance; Step 2: Level the floor before installation, lay a mortar layer in advance at the bottom connection of the prefabricated structural wall of the prefabricated module unit, and control the thickness of the mortar layer at the bottom of the prefabricated structural wall according to the floor elevation and the installation completion surface elevation; hoist the prefabricated module unit to 200-300mm above the floor, align and fine-tune the embedded grouting sleeve or grout anchor lap hole at the bottom of the prefabricated structural wall with the connecting steel bars on the floor, and ensure that all connecting steel bars can be inserted into the embedded grouting sleeve or grout anchor lap hole at the bottom of the prefabricated structural wall; after the alignment and adjustment are completed, place the prefabricated module unit on the mortar layer on the floor to complete the installation of the prefabricated module unit; Step 3: Hoist another prefabricated module unit in the interval; at the same time, perform sleeve grouting of the prefabricated structural wall connecting steel bars; If the prefabricated module unit is a hexahedral module, the gap between the prefabricated bottom plate and the lower prefabricated top plate should be grouted during the sleeve grouting construction, so that the prefabricated bottom plate and the lower prefabricated top plate of the prefabricated module unit form the whole floor of this layer; after all the prefabricated module units of this layer are installed in place, the hoisting construction of prefabricated beams and spliced ​​prefabricated panels shall be carried out; Step 4: When installing the spliced ​​prefabricated panels, position them according to the convex and concave bite keys at the ends of the prefabricated module units to ensure that the outer convex bite keys of the spliced ​​prefabricated panels correspond to the convex and concave bite keys of the full prefabricated top plate, and at the same time, the grooves of the spliced ​​prefabricated panels coincide with the grooves of the full prefabricated top plate; place the spliced ​​prefabricated panels in place, and pass the dowels on the prefabricated module units through the dowel holes of the spliced ​​prefabricated panels; Step 5: After the spliced ​​prefabricated panels are installed in place, horizontal connecting steel bars are placed in the corresponding grooves of the full prefabricated top plate and the spliced ​​prefabricated panels, and then the bite key joints and grooves between the prefabricated module units and the spliced ​​prefabricated panels are grouting to complete the overall connection between the full prefabricated top plate and the spliced ​​prefabricated panels; the grouting material is a high-strength non-shrinkage grouting material with added steel fiber, and it needs to be cured for 3-5 hours after the grouting is completed; Step 6: Install the prefabricated module units on the next floor; for the floors where the installation has been completed, carry out the construction of mechanical and electrical pipelines. The mechanical and electrical pipelines pre-buried in the prefabricated module units have connection ports reserved for the mechanical and electrical pipelines at the bottom of the prefabricated structural wall. The mechanical and electrical pipelines of this floor are quickly connected through the area between the two prefabricated module units, that is, on the floor of the spliced ​​prefabricated panel area.

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