A connecting structure for fabricated building and fabricated building thereof

Abstract

This utility model discloses a connection structure for prefabricated buildings and the prefabricated building thereof, belonging to the field of prefabricated building technology. It includes a base plate, a top plate, an adjusting bolt unit, lower reinforcing bars, upper reinforcing bars, and a cast-in-place concrete layer. The bottom surface of the base plate is fixed with embedded anchor bars, and a pipe seat penetrates through the center of the base plate. Multiple corner plates are welded at intervals to the top and bottom surfaces of the base plate, and the other right-angle side of each corner plate is fixed to the pipe seat. A reinforcing bar window is provided on the top plate opposite the pipe seat. The adjusting bolt unit includes multiple adjusting support rods, each including an upper bolt and a lower bolt fixed to the ends of the base and top plates, with an adjusting screw threaded between the upper and lower bolts. The threads of the upper and lower bolts are in opposite directions. This utility model's connection structure for prefabricated buildings and the prefabricated building thereof can balance auxiliary prefabricated building components and prefabricated beams, and can be cast as a single unit.

Description

Technical Field

[0001] This utility model specifically relates to a connection structure for prefabricated buildings and the prefabricated building thereof, belonging to the field of prefabricated building technology. Background Technology

[0002] Prefabricated buildings are constructed by assembling prefabricated building components such as wall panels and floor slabs on-site. Prefabricated buildings can reduce structural weight, increase labor productivity, expand usable floor area, and improve earthquake resistance. A key issue in the installation quality of building components is node design; structurally, the integrity of component connections must be ensured. Existing connection methods mainly include welding, bolting, and post-cast concrete integral connections. These connection structures suffer from low connection strength, poor stability, poor axial tensile strength, and inconvenient assembly. Therefore, Chinese Patent Publication No.: CN22241371 0U discloses a prefabricated building wall panel, including a panel body. Two inserts are symmetrically arranged on one side of the panel body, and the two inserts are respectively located on the upper and lower parts of the side of the panel body. The inserts are provided with a through hole. The side of the panel body away from the inserts is provided with a slot to cooperate with the inserts. A sliding groove is provided between the two slots. Two sliding plates are slidably arranged inside the sliding groove to cooperate with the through hole. This structure can efficiently realize the stable connection of two adjacent prefabricated building wall panels, simplify the operation process, and reduce the workload of construction personnel. However, this structure is difficult to balance in the process of balancing building beams and prefabricated components, and the overall pull-out resistance is generally poor. Utility Model Content

[0003] To address the aforementioned issues, this utility model proposes a connection structure for prefabricated buildings and a prefabricated building thereof, which can balance auxiliary prefabricated building components and assembly beams, and can be cast into a single unit.

[0004] The connection structure for prefabricated buildings of this utility model includes:

[0005] A base plate, on the bottom surface of which is fixed with pre-embedded anchor bars, and a pipe seat passing through the middle of the base plate; multiple corner plates are welded at intervals on the top and bottom surfaces of the base plate, and the other right-angle side of each corner plate is fixed to the pipe seat;

[0006] Top plate, with a reinforced window directly opposite the pipe seat;

[0007] The adjusting bolt unit includes multiple adjusting support rods, each adjusting support rod including an upper bolt and a lower bolt fixed to the ends of the bottom plate and the top plate, and an adjusting screw tube is screwed between the upper bolt and the lower bolt; the threads of the upper bolt and the lower bolt are in opposite directions.

[0008] The lower reinforcing bar and the pre-embedded anchor bar are cast inside the cast beam; the lower reinforcing bar is fixed to the reinforcing cage inside the cast beam; the upper end of the lower reinforcing bar passes through the pipe seat.

[0009] The upper reinforcing bar is cast inside the precast concrete component at its upper end and fixed to the reinforcing mesh inside the precast concrete component; the lower end of the upper reinforcing bar is inserted into the pipe seat.

[0010] A cast-in-place concrete layer, which is poured between the cast-in-place beam and the precast concrete component;

[0011] The inside of the pipe seat is filled with concrete grout.

[0012] During installation, the base plate, top plate, and adjusting bolt unit are first assembled into a single structural component. Then, based on the installation position of the lower reinforcing bars, the lower reinforcing bars are inserted into the inner side of the pipe seat of the structural component. The lower part of the structural component is pre-embedded and cast into the cast beam, causing the base plate to protrude from the top surface of the cast beam. After curing, the precast concrete component is hoisted directly above the structural component, aligning the upper reinforcing bars of the precast concrete component with the through-reinforcement window of the top plate, and inserting the upper reinforcing bars into the inner side of the pipe seat. Next, the spacing between the two ends of the adjusting support rod is adjusted using adjusting bolts to adjust the height and inclination of the top plate. After adjustment, concrete grout is poured into the pipe seat. After the concrete grout has cured, a cast-in-place concrete layer is poured using a mold. This cast-in-place concrete layer protects the exposed parts of the lower and upper reinforcing bars and the adjusting bolt unit.

[0013] Furthermore, the lower reinforcing bar extends through the pipe seat, and the lower reinforcing bar and the upper reinforcing bar are welded together. During installation, the adjusting screw is rotated to move the upper and lower bolts away from or close to each other until the precast concrete component is adjusted to the set height, thus completing the height adjustment of the precast concrete component. Then, the lower and upper reinforcing bars are welded together, and concrete grout is poured into the pipe seat, so that the upper and lower reinforcing bars and the pipe seat are cast together through a cast-in-place concrete layer, which can ensure the installation stability and anti-tilting and pull-out performance of the precast concrete component.

[0014] Furthermore, an I-shaped disc is screwed onto the top of the pipe seat; the upper plate of the I-shaped disc has an anchor hole facing the upper reinforcing bar, and the lower plate of the I-shaped disc has a through hole facing the anchor hole; the upper reinforcing bar passes through the anchor hole and the through hole, and a clamping piece that hugs the upper reinforcing bar is embedded in the anchor hole from the bottom; the lower and upper reinforcing bars have an intersection area on the inside of the pipe seat; during installation, the precast concrete component is first hoisted to the top of the roof slab, and the precast concrete component is positioned 0.1-0.5 cm below the set installation position; then, the upper reinforcing bar is passed through the anchor hole and the through hole into the pipe seat; then, the clamping piece is inserted into the anchor hole and covers the upper reinforcing bar. Next, the clamps are tapped to lock them into place with the upper reinforcing bar. Then, the adjusting screw is rotated to move the upper and lower anchors away from each other until the precast concrete component is lifted to the set height, completing the height adjustment of the precast concrete component. During the height adjustment process, the bottom end of the upper reinforcing bar is held tightly by the clamps, which allows the clamps to fully engage with the anchor holes and applies prestress to the upper reinforcing bar. Furthermore, because the upper reinforcing bar is tightened with the pipe seat, the upper and lower reinforcing bars and the pipe seat are integrated by the cast-in-place concrete layer, ensuring the installation stability and anti-tilting pull-out performance of the precast concrete component.

[0015] Furthermore, the upper part of the pipe seat is provided with a grouting hole, and the lower plate of the I-shaped plate is provided with an overflow hole; the top of the pipe seat is sealed by the I-shaped plate, and the bottom of the pipe seat is sealed by the casting beam; a closed casting space can be formed inside the pipe seat. The grout pump unit is connected to the grouting hole. When the grouting hole is filled with concrete grout, the concrete grout is discharged from the overflow hole. At this time, the grout pump unit stops supplying material.

[0016] A prefabricated building employs a connection structure for prefabricated construction. The connection structure is located at both ends of a cast-in-place beam and a precast concrete component. Multiple pipe supports are pre-embedded between the cast-in-place beam and the connection structure. The upper part of each pipe support protrudes from the cast-in-place beam. Lower and upper reinforcing bars are inserted into the inner side of each pipe support. The connection structure, arranged on both sides of the cast-in-place beam and the precast concrete component, can adjust both the height and levelness of the precast concrete component. Finally, by setting multiple sets of pipe supports between the connection structures, the connection strength between the cast-in-place beam and the precast concrete component is enhanced.

[0017] Compared with the prior art, the connection structure for prefabricated buildings and the prefabricated buildings of this utility model support the prefabricated building components hoisted into place through a base plate, a top plate, and adjustment support rods. Then, the horizontal height of the prefabricated building components and the inclination of both ends of the prefabricated building components can be adjusted through the adjustment support rods. The prefabricated building components can be adjusted to a set height and the installation level of the prefabricated building components. They are assembled into a whole through the lower steel bar, the upper steel bar, and the pipe seat, and then the concrete grout is poured and cured. This ensures the firmness of the prefabricated building components and has strong overall anti-tilting and pull-out performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the connection structure in Embodiment 1 of this utility model.

[0019] Figure 2 This is a schematic diagram of the installation structure of various components on the cast beam of this utility model.

[0020] Figure 3 This is a schematic diagram of the cast beam, connection structure, and precast concrete component installation structure of this utility model.

[0021] Figure 4 This is a schematic diagram of the casting beam, connection structure, precast concrete components, and cast-in-place concrete layer installation structure of this utility model.

[0022] Figure 5 This is a schematic diagram of the overall structure of the connection structure in Embodiment 2 of this utility model.

[0023] Figure 6 This is a schematic diagram of the structure of the I-shaped disc and clamping plate before installation of this utility model.

[0024] Attached reference numerals: 1. Base plate, 2. Embedded anchor bar, 3. Pipe seat, 4. Corner plate, 5. Top plate, 6. Upper bolt, 7. Lower bolt, 8. Adjustment screw pipe, 9. Lower reinforcing bar, 10. Cast-in-place beam, 11. Upper reinforcing bar, 12. Precast concrete component, 13. Cast-in-place concrete layer, 14. I-shaped plate, 15. Anchor hole, 16. Wedge, 17. Grouting hole, 18. Overflow hole, 19. Through-reinforcement window. Detailed Implementation

[0025] Example 1:

[0026] like Figures 1 to 4 The connection structure shown for prefabricated buildings includes:

[0027] The base plate 1 has a pre-embedded anchor bar 2 fixed on its bottom surface and a pipe seat 3 passing through its middle. Multiple corner plates 4 are welded at intervals on the top and bottom surfaces of the base plate 1, and the other right-angle side of the corner plate 4 is fixed to the pipe seat 3.

[0028] Top plate 5, with a reinforced window 19 directly opposite the pipe seat 3;

[0029] The adjusting bolt unit includes multiple adjusting support rods. Each adjusting support rod includes an upper bolt 6 and a lower bolt 7 that are fixed to the ends of the base plate 1 and the top plate 5. An adjusting screw tube 8 is screwed between the upper bolt 6 and the lower bolt 7. The threads of the upper bolt 6 and the lower bolt 7 are in opposite directions.

[0030] The lower reinforcing bar 9 and the pre-embedded anchor bar 2 are cast inside the cast beam 10; the lower reinforcing bar 9 is fixed to the reinforcing cage inside the cast beam 10; the upper end of the lower reinforcing bar 9 passes through the pipe seat 3.

[0031] Upper reinforcing bar 11, the upper end of which is cast inside the precast concrete component 12 and fixed to the reinforcing mesh inside the precast concrete component 12; the lower end of which is inserted into the pipe seat 3.

[0032] A cast-in-place concrete layer 13 is poured between the cast-in-place beam 10 and the precast concrete component 12;

[0033] The inside of the pipe seat 3 is filled with concrete grout.

[0034] During installation, the base plate 1, top plate 5, and adjusting bolt unit are first assembled into a single structural component. Then, according to the installation position of the lower reinforcing bar 9, the lower reinforcing bar 9 is inserted into the inner side of the pipe seat 3 of the structural component. The lower part of the structural component is pre-embedded and cast into the casting beam 10, causing the base plate 1 to protrude from the top surface of the casting beam 10. After curing, the precast concrete component 12 is hoisted directly above the structural component, and the upper reinforcing bar 11 of the precast concrete component 12 is aligned with the through-reinforcement window 19 of the top plate 5. The upper reinforcing bar 11 is then inserted into the inner side of the pipe seat 3. Next, the spacing between the two ends of the adjusting support rod is adjusted using the adjusting screw 8, thereby adjusting the height and inclination of the top plate 5. After adjustment, concrete grouting material is first poured into the pipe seat 3. After the concrete grouting material cures, cast-in-place concrete is then poured using a mold.

[0035] The lower reinforcing bar 9 protrudes from the pipe seat 3, and the lower reinforcing bar 9 and the upper reinforcing bar 11 are welded together. During installation, the adjusting screw tube 8 is rotated to move the upper bolt 6 and the lower bolt 7 away from or close to each other until the precast concrete component 12 is adjusted to the set height, thus completing the height adjustment of the precast concrete component 12. Then, the lower reinforcing bar 9 and the upper reinforcing bar 11 are welded together, and concrete grouting material is poured into the pipe seat 3. This allows the upper reinforcing bar 11, the lower reinforcing bar 9, and the pipe seat 3 to be cast together through the cast-in-place concrete layer 13, ensuring the installation stability and anti-tilting pull-out performance of the precast concrete component 12.

[0036] Example 2:

[0037] like Figures 2 to 6The connection structure shown is for prefabricated buildings. The top of the pipe base 3 is screwed with an I-shaped disc 14. The upper disc of the I-shaped disc 14 has an anchor hole 15 facing the upper reinforcing bar 11, and the lower disc of the I-shaped disc 14 has a through hole facing the anchor hole 15. The upper reinforcing bar 11 passes through the anchor hole 15 and the through hole. A clamping piece 16, which is embedded at the bottom of the anchor hole 15 and holds the upper reinforcing bar 11 tightly, is inserted into the anchor hole 15. The lower reinforcing bar 9 and the upper reinforcing bar 11 have an intersection area inside the pipe base 3. During installation, the precast concrete component 12 is first hoisted to the top of the top slab 5, and the precast concrete component 12 is positioned 0.1-0.5 cm below the set installation position. Then, the upper reinforcing bar 11 is passed through the anchor hole 15 and the through hole into the pipe base 3. Finally, the clamping piece 16 is inserted into the anchor hole 15. The upper reinforcing bar 11 is covered, and then the clamping plate 16 is struck to clamp the clamping plate 16 to the upper reinforcing bar 11. Then, the adjusting screw tube 8 is rotated to move the upper bolt 6 and the lower bolt 7 away from each other until the concrete precast component 12 is lifted to the set height, completing the height adjustment of the concrete precast component 12. During the height adjustment of the concrete precast component 12, the bottom end of the upper reinforcing bar 11 is held tightly by the clamping plate 16. At this time, the clamping plate 16 can be fully held with the anchor hole 15, and prestress can be applied to the upper reinforcing bar 11. And because the upper reinforcing bar 11 is tightened with the pipe seat 3, the upper reinforcing bar 11, the lower reinforcing bar 9 and the pipe seat 3 are cast into one piece by the cast-in-place concrete layer 13, which can ensure the installation stability and anti-tilting pull-out performance of the concrete precast component 12.

[0038] The upper part of the pipe seat 3 is provided with a grouting hole 17, and the lower plate of the I-shaped plate 14 is provided with an overflow hole 18. The top of the pipe seat 3 is sealed by the I-shaped plate 14, and the bottom of the pipe seat 3 is sealed by the casting beam 10. A closed casting space can be formed inside the pipe seat 3. The grout pump unit is connected to the grouting hole 17. When the grouting hole 17 is filled with concrete grout, the concrete grout is discharged from the overflow hole 18. At this time, the grout pump unit stops supplying material.

[0039] A prefabricated building employs a connection structure for prefabricated construction. The connection structure is located at both ends of a cast-in-place beam 10 and a precast concrete component 12. Multiple pipe supports 3 are pre-embedded between the cast-in-place beam 10 and the connection structure. The upper part of each pipe support 3 protrudes from the cast-in-place beam 10. Lower reinforcing bars 9 and upper reinforcing bars 11 are inserted into the inner side of each pipe support 3. The connection structure, arranged on both sides of the cast-in-place beam 10 and the precast concrete component 12, can adjust both the height and levelness of the precast concrete component 12. Finally, by setting multiple sets of pipe supports 3 between the connection structures, the connection strength between the cast-in-place beam 10 and the precast concrete component 12 is enhanced.

[0040] The above embodiments are merely preferred embodiments of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model are included within the scope of the present utility model.

Claims

1. A connection structure for prefabricated buildings, characterized in that: include: A base plate, on the bottom surface of which is fixed with pre-embedded anchor bars, and a pipe seat passing through the middle of the base plate; multiple corner plates are welded at intervals on the top and bottom surfaces of the base plate, and the other right-angle side of each corner plate is fixed to the pipe seat; Top plate, with a reinforced window directly opposite the pipe seat; The adjusting bolt unit includes multiple adjusting support rods, each adjusting support rod including an upper bolt and a lower bolt fixed to the ends of the bottom plate and the top plate, and an adjusting screw tube is screwed between the upper bolt and the lower bolt; the threads of the upper bolt and the lower bolt are in opposite directions. The lower reinforcing bar and the pre-embedded anchor bar are cast inside the cast beam; the lower reinforcing bar is fixed to the reinforcing cage inside the cast beam; the upper end of the lower reinforcing bar passes through the pipe seat. The upper reinforcing bar is cast inside the precast concrete component at its upper end and fixed to the reinforcing mesh inside the precast concrete component; the lower end of the upper reinforcing bar is inserted into the pipe seat. A cast-in-place concrete layer, which is poured between the cast-in-place beam and the precast concrete component; The inside of the pipe seat is filled with concrete grout.

2. The connection structure for prefabricated buildings according to claim 1, characterized in that: The lower reinforcing bar extends out of the pipe seat, and the lower reinforcing bar and the upper reinforcing bar are welded together as one unit.

3. The connection structure for prefabricated buildings according to claim 1, characterized in that: The top of the tube base is screwed with an I-shaped disc; the upper plate of the I-shaped disc has an anchor hole facing the upper reinforcing bar, and the lower plate of the I-shaped disc has a through hole facing the anchor hole; the upper reinforcing bar passes through the anchor hole and the through hole, and a clamping piece that hugs the upper reinforcing bar is embedded in the anchor hole from the bottom; the lower and upper reinforcing bars have an intersection area on the inside of the tube base.

4. The connection structure for prefabricated buildings according to claim 3, characterized in that: The upper part of the tube seat is provided with an injection hole, and the lower plate of the I-shaped plate is provided with an overflow hole.

5. A prefabricated building, employing the connection structure for prefabricated buildings as described in any one of claims 1 to 4, characterized in that: The connecting structure is provided at both ends of the cast beam and the precast concrete component; multiple pipe seats are also pre-embedded between the cast beam and the connecting structure; the upper part of the pipe seat protrudes from the cast beam; and lower and upper reinforcing bars are inserted into the inner side of the pipe seat.

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