Vertical steel-concrete combined connecting structure of frame type concrete modular building

Abstract

The utility model provides a vertical steel-concrete combined connecting structure for a frame type concrete modular building, which relates to the technical field of modular buildings and comprises a foundation block, a plurality of square steel tubes and a plurality of module columns. The ends of the module columns are connected, grooves are formed in the two ends of each module column, and four connecting steel bars are embedded in the end of each module column. Slurry holes communicated with the grooves are formed in the side edges of the module columns, the slurry holes are communicated with the bottoms of the grooves, the grooves of the two connected module columns are connected to form a containing space, a square steel pipe is arranged in the containing space, and a gap is reserved between the square steel pipe and the inner wall of the containing space; the lower end of one square steel pipe is embedded in the foundation block, the two ends of the square steel pipe are sealed, preformed holes are formed in the side edges of the square steel pipe, and steel bar holes are formed in the ends of the square steel pipe. The problem that vertical connecting joints of a modular building are all arranged at the elevation position of a floor and cannot be suitable for an ultrahigh frame type concrete modular building is solved.

Description

Technical Field

[0001] This utility model relates to the field of modular building technology, and in particular to a vertical steel-concrete composite connection structure for frame-type concrete modular buildings. Background Technology

[0002] Modular construction involves breaking down a building into individual modular units. Each module is efficiently manufactured in a factory, integrating its structure, electromechanical equipment and piping, interior decoration, and bathroom facilities. These modules are then transported to the construction site using specialized vehicles, hoisted using specialized machinery, and assembled rapidly through reliable structural connection nodes. Framed concrete modular construction, on the other hand, breaks down the building into individual framed concrete modules. Each module consists of four corner frame columns, four top frame beams and a top slab, four bottom frame beams and a bottom slab, and four infill walls, forming a hexahedron. The entire building is assembled from these framed concrete modules.

[0003] Generally, when modular frame structures are disassembled, the height of each module is the building's floor height. Therefore, vertical connection nodes between modules are all set at floor elevations. In actual engineering projects, many buildings (such as teaching buildings, hospitals, hotels, dormitories, etc.) have floor heights exceeding 3.5m. However, the total transport height generally cannot exceed 4.5m, including the height of the transport vehicle platform (usually 1m). Therefore, the height of conventional transported modules must be ≤3.5m, making it impossible to transport modules exceeding 3.5m in height. Thus, setting vertical connection nodes between modules only at floor elevations is unsuitable for ultra-high-rise modular frame structures. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a vertical steel-concrete composite connection structure for frame-type modular concrete buildings. This structure solves the problem that the vertical connection nodes of modular buildings are all located at floor elevations, making them unsuitable for ultra-high-rise frame-type modular concrete buildings.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A frame-type modular concrete building vertical steel-concrete composite connection structure includes: foundation blocks, several square steel pipes and several modular columns;

[0007] The height of the modular column is half the floor elevation. Several modular columns are coaxially arranged and connected at their ends. Both ends of the modular column are provided with grooves. Four connecting steel bars are pre-embedded at the end of each modular column. One end of the connecting steel bars is located in the groove. The side of the modular column is provided with a grout hole that communicates with the groove. The grout hole communicates with the bottom of the groove. The grooves of two connected modular columns are connected to form a receiving space. A square steel pipe is provided in the receiving space, and a gap is left between the square steel pipe and the inner wall of the receiving space.

[0008] The bottommost module column is connected to the foundation block. The lower end of one of the square steel pipes is embedded in the foundation block, and its upper end is located in the groove at the bottom of the bottommost module column. A gap is left between the square steel pipe and the inner wall of the groove at the bottom of the bottommost module column. A connecting hole communicating with the groove at the bottom of the bottommost module column is provided between the bottommost module column and the foundation block.

[0009] The square steel pipe is sealed at both ends, with reserved holes on the side and steel bar holes at the end for connecting steel bars to extend into.

[0010] Preferably, the square steel tube has pre-drilled holes on all four sides.

[0011] Preferably, an upper pad is provided at the middle of the top of each square steel tube, and a lower pad is provided at the middle of the bottom of each square steel tube located within the accommodating space.

[0012] Preferably, the bottom side of the square steel pipe embedded in the foundation block is fixed with transverse reinforcing bars.

[0013] Preferably, the reinforcing bar holes are located at the four corners of the square steel pipe.

[0014] Preferably, the four connecting steel bars at the end of each module column are connected by a tie bar.

[0015] Preferably, the diameter of the rebar hole is greater than or equal to 50 mm.

[0016] This utility model has the following beneficial effects:

[0017] The square steel pipes are installed at half the floor level for connection, which is suitable for ultra-high frame-type modular concrete buildings. The connection points have good compressive, bending and shear resistance, ensuring that the modular frame columns are spliced ​​to form a complete frame column.

[0018] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional schematic diagram of the connection structure between the modular column and the foundation block of this utility model;

[0021] Figure 3 This is a cross-sectional schematic diagram of the connection structure between the modular columns of this utility model;

[0022] Figure 4 This is a schematic diagram of the modular column structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the square steel tube structure between the modular column and the foundation block of this utility model;

[0024] Figure 6 This is a schematic diagram of the square steel tube structure between the two modular columns of this utility model;

[0025] Figure 7 This is a cross-sectional view of the square steel tube portion of the present invention.

[0026] In the above attached diagram: 1. Foundation block; 2. Module column; 21. Grout hole; 3. Groove; 4. Connecting reinforcement; 41. Binding reinforcement; 5. Connecting hole; 6. Reinforcing bar hole; 7. Reserved hole; 81. Upper pad; 82. Lower pad; 83. Horizontal reinforcement. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model clearer and easier to understand, the technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0028] Please see Figures 1 to 7As shown, a vertical steel-concrete composite connection structure for a frame-type modular concrete building includes: a foundation block 1, several square steel pipes, and several modular columns 2; the height of each modular column 2 is half the floor level, and several modular columns 2 are coaxially arranged, with their ends connected. Each modular column 2 has a groove 3 at both ends, and four connecting steel bars 4 are pre-embedded at the end of each modular column 2, with one end of each connecting steel bar 4 located within the groove 3. A grout hole 21 communicating with the groove 3 is provided on the side of the modular column 2, and the grout hole 21 communicates with the bottom of the groove 3. The grooves 3 of two connected modular columns 2 are connected to form a receiving space, within which square steel pipes are installed. A gap is left between the square steel pipe and the inner wall of the accommodating space; the lowest module column 2 is connected to the foundation block 1, the lower end of one of the square steel pipes is pre-embedded in the foundation block 1, and its upper end is located in the groove 3 at the bottom of the lowest module column 2. A gap is left between the square steel pipe and the inner wall of the groove 3 at the bottom of the lowest module column 2. A connecting hole 5 communicating with the groove 3 at the bottom of the lowest module column 2 is provided between the lowest module column 2 and the foundation block 1; both ends of the square steel pipe are sealed, a reserved hole 7 is provided on the side of the square steel pipe, and a steel bar hole 6 is provided at the end of the square steel pipe for the connecting steel bar 4 to extend into. The diameter of the steel bar hole 6 is greater than or equal to 50mm.

[0029] A square steel pipe is installed at half the floor elevation for connection, which is suitable for ultra-high frame-type modular concrete buildings. The connection point has good compressive, bending, and shear resistance, ensuring that the modular frame columns form a complete frame column after splicing. The diameter of the rebar hole 6 is greater than or equal to 50mm, which can achieve an allowable error of greater than or equal to 25mm, greatly improving the allowable error of rebar insertion in the modular column 2 and greatly improving installation efficiency. Specifically, when connecting the connection point, grout can be injected into the groove 3 through the grout hole 21 of the upper modular column 2 to pre-embed the connecting rebar 4 and increase the connection strength at the connection point; the connection hole 5 is set to facilitate grout injection into the groove 3 at the bottom of the lowest modular column 2; gaps and reserved holes 7 are set to facilitate the injection of grout into the square steel pipe through the reserved holes 7; the rebar holes 6 are set at the four corners of the square steel pipe, and the rebar holes 6 serve as limiters.

[0030] Furthermore, such as Figure 7 As shown, pre-drilled holes 7 are provided on all four sides of the square steel pipe to facilitate faster entry of slurry into the square steel pipe.

[0031] Furthermore, such as Figures 1 to 3 , Figure 5 and Figure 6As shown, an upper pad 81 is provided at the middle of the top of each square steel pipe, and a lower pad 82 is provided at the middle of the bottom of the square steel pipe located within the accommodating space. During connection, the upper pad 81 and the lower pad 82 respectively contact the bottom of their corresponding grooves 3, serving as a limiting device and ensuring that there is space between the square steel pipe and the bottom of the groove 3 for easy injection of slurry.

[0032] Furthermore, such as Figure 2 and Figure 5 As shown, the bottom side of the square steel pipe embedded in the foundation block 1 is fixed with a horizontal steel bar 83 to increase the connection stability.

[0033] Furthermore, such as Figures 1 to 3 As shown, the four connecting steel bars 4 at the ends of each module column 2 are connected by tie bars 41. The tie bars 41 connect and fix the connecting steel bars 4, increasing the stability of the connecting steel bars 4 and enhancing the connection strength.

[0034] The specific work process is as follows: Prefabricate the frame-type concrete modules and other components; embed a square steel pipe within the foundation block 1; install the bottom module column 2, inserting the connecting steel bar 4 from the bottom groove 3 of this module column 2 into the square steel pipe through the steel bar hole 6 at the top of the square steel pipe. After proper alignment, seal the connection between the foundation block 1 and the bottom module column 2 with high-strength grout to form a complete cavity. Then, grout is injected through the connecting hole 5. Grouting is stopped after a cylindrical grout overflows from the grout hole 21 connected to the groove 3 and after a specified time has elapsed. Then, install the second module column 2. Specifically, place the second square steel pipe... The connecting steel bar 4 in the top groove 3 of the bottom module column 2 is inserted into the square steel pipe through the steel bar hole 6 at the bottom of the second square steel pipe. After the connecting steel bar 4 in the bottom groove 3 of the second module column 2 is inserted into the square steel pipe through the steel bar hole 6 at the top of the second square steel pipe, the connection between the two module columns 2 is sealed with high-strength grout. Grouting is carried out through the grout hole 21 at the top of the bottom module column 2. After the cylindrical grout overflows from the grout hole 21 at the bottom of the upper module column 2 and the specified time is reached, the grouting is stopped. The subsequent installation of the module column 2 shall be carried out in accordance with the steps of installing the second module column 2.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A vertical steel-concrete composite connection structure of a framed concrete modular building, characterized by, Include: Base block (1), several square steel pipes and several module columns (2); The module column (2) is half of the floor elevation, several module columns (2) are coaxially arranged, the end of the module column (2) is connected, the two ends of the module column (2) are provided with grooves (3), four connecting steel bars (4) are embedded at the end of each module column (2), one end of the connecting steel bar (4) is located in the groove (3), the side of the module column (2) is provided with a grout hole (21) in communication with the groove (3), the grout hole (21) is in communication with the groove bottom of the groove (3), the grooves (3) of the two module columns (2) connected form a containing space, a square steel pipe is arranged in the containing space, and a gap is left between the square steel pipe and the inner wall of the containing space; The module column (2) at the lowermost part is connected with the base block (1), one end of the square steel pipe is embedded in the base block (1), and the other end is located in the groove (3) at the bottom of the lowermost module column (2). A gap is left between the square steel pipe and the inner wall of the groove (3) at the bottom of the lowermost module column (2), and a connecting hole (5) is arranged between the lowermost module column (2) and the base block (1) and in communication with the groove (3) at the bottom of the lowermost module column (2). The square steel pipe is sealed at both ends, the side of the square steel pipe is provided with a reserved hole (7), and the end of the square steel pipe is provided with a steel bar hole (6) for the connecting steel bar (4) to extend into.

2. The vertical steel-concrete composite connecting structure of a framed concrete modular building of claim 1, wherein The four sides of the square steel pipe are provided with reserved holes (7).

3. The vertical steel-concrete composite connecting structure of a framed concrete modular building of claim 1, wherein The top end of the square steel pipe is provided with an upper tie plate (81), and the bottom end of the square steel pipe arranged in the containing space is provided with a lower tie plate (82).

4. The vertical steel-concrete composite connecting structure of a framed concrete modular building of claim 1, wherein The square steel pipe embedded in the base block (1) is fixed with a transverse steel bar (83) at the bottom side.

5. The vertical steel-concrete composite connecting structure of a framed concrete modular building of claim 1, wherein The steel bar hole (6) is arranged at the four corners of the square steel pipe.

6. The vertical steel-concrete composite connecting structure of a framed concrete modular building of claim 1, wherein The four connecting steel bars (4) at the end of each module column (2) are connected with a bundled steel bar (41).

7. The vertical steel-concrete composite connecting structure of a framed concrete modular building of claim 1, wherein The diameter of the steel bar hole (6) is greater than or equal to 50mm.

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