Flexible connecting structure of prefabricated component and building main body

Abstract

The present invention discloses a flexible connecting structure of a prefabricated component and a building main body. The flexible connecting structure comprises multiple layers of cast-in-situ building main bodies spaced up and down, a prefabricated component is connected between two adjacent cast-in-situ building main bodies, a tenon is provided at the lower end of the prefabricated component, a mortise matching the tenon is provided on the top surface of the cast-in-situ building main body, and the prefabricated component is socketed to the lower layer of cast-in-situ building main body by tenon-and-mortise cooperation; and a first flexible layer for reducing the connection rigidity between the prefabricated component and the upper layer of cast-in-situ building main body is provided at the junction between the prefabricated component and the upper layer of cast-in-situ building main body. The present invention realizes a flexible connection between a prefabricated component and a building main body, and avoids the influence of the prefabricated component on the rigidity of the building main body.

Claims

1. A flexible connecting structure of a prefabricated component and a building main body, wherein the flexible connecting structure comprises multiple layers of cast-in-situ building main bodies spaced up and down, a prefabricated component is connected between two adjacent cast-in-situ building main bodies, a tenon is provided at a lower end of the prefabricated component, a mortise matching the tenon is provided on a top surface of the cast-in-situ building main body, and the prefabricated component is socketed to a lower layer of the cast-in-situ building main body by tenon-and-mortise cooperation; and a first flexible layer for reducing the connection rigidity between the prefabricated component and an upper layer of the cast-in-situ building main body is provided at a junction between the prefabricated component and the upper layer of the cast-in-situ building main body, the socketed connection between the prefabricated component and the lower layer of the cast-in-situ building main body is a hinged connection.

2. The flexible connecting structure of the prefabricated component and the building main body according to claim 1, wherein a cast-in-situ shear wall connecting the upper and lower layers of cast-in-situ building main bodies is disposed on an external wall of the prefabricated component, and a second flexible layer for reducing the connection rigidity between the prefabricated component and the cast-in-situ shear wall is provided at the junction between the prefabricated component and the cast-in-situ shear wall.

3. The flexible connecting structure of the prefabricated component and the building main body according to claim 2, wherein the first flexible layer and the second flexible layer are both polystyrene foam layers.

4. The flexible connecting structure of the prefabricated component and the building main body according to claim 1, wherein a hook is embedded in an upper part of the prefabricated component, and the hook passes through the first flexible layer and then extends into the upper layer of cast-in-situ building main body.

5. The flexible connecting structure of the prefabricated component and the building main body according to claim 1, wherein the prefabricated component is a prefabricated toilet or a prefabricated kitchen.

6. The flexible connecting structure of the prefabricated component and the building main body according to claim 5, wherein a support step is provided on an inner wall of the mortise, and the prefabricated component is supported on the support step; and a leveling layer is provided at the junction between the support step and the prefabricated component.

7. The flexible connecting structure of the prefabricated component and the building main body according to claim 6, wherein a filling layer is provided in a gap between the cast-in-situ building main body and the prefabricated component; and the filling layer is above the leveling layer.

8. The flexible connecting structure of the prefabricated component and the building main body according to claim 6, wherein a lower part of the prefabricated component forms the tenon, and an upper part of the prefabricated component forms a prefabricated component main body; at least one side wall of the tenon is contracted inward, and the support step comprises a first support step supporting a lower end surface of the prefabricated component main body, and/or a second support step supporting a lower end surface of the tenon.

9. A construction method of a flexible connecting structure of a prefabricated component and a building main body, wherein the flexible connecting structure of the prefabricated component and the building main body comprises multiple layers of cast-in-situ building main bodies spaced up and down, a prefabricated component is connected between two adjacent cast-in-situ building main bodies, a tenon is provided at a lower end of the prefabricated component, a mortise matching the tenon is provided on a top surface of the cast-in-situ building main body, and the prefabricated component is socketed to a lower layer of the cast-in-situ building main body by tenon-and-mortise cooperation; and a first flexible layer for reducing the connection rigidity between the prefabricated component and an upper layer of the cast-in-situ building main body is provided at a junction between the prefabricated component and the upper layer of the cast-in-situ building main body, and the construction method of the said flexible connecting structure of the prefabricated component and the building main body comprises the following steps: S1: casting a bottom layer of building main body to obtain a bottom layer of cast-in-situ building main body; S2: socketing the tenon of the prefabricated component to the mortise of the cast-in-situ building main body; S3: laying the first flexible layer on a top surface of the socketed prefabricated component; S4: casting an upper layer of building main body on the first flexible layer to obtain an upper layer of cast-in-situ building main body; and S5: repeating steps S2-S4 to complete flexible connections between prefabricated components and building main bodies, wherein the flexible connections between the prefabricated components and the lower layer of the cast-in-situ building main bodies are hinged connections.

10. The construction method of the flexible connecting structure of the prefabricated component and the building main body according to claim 9, wherein a cast-in-situ shear wall connecting the upper and lower layers of cast-in-situ building main bodies is disposed on an external wall of the prefabricated component, and a second flexible layer for reducing the connection rigidity between the prefabricated component and the cast-in-situ shear wall is provided at the junction between the prefabricated component and the cast-in-situ shear wall; and step S4 further comprises: laying the second flexible layer on the external wall of the prefabricated component; and casting the shear wall on an outer side of the second flexible layer.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a schematic diagram of a flexible connecting structure of a prefabricated component and a building main body according to Embodiment 1 of the present invention.

(2) FIG. 2 is a schematic diagram of a flexible connecting structure of a prefabricated component and a building main body according to Embodiment 2 of the present invention.

(3) FIG. 3 is a partially enlarged view of a junction between a prefabricated component and a building main body in the present invention.

(4) Reference signs: 1, prefabricated component; 11, tenon; 2, cast-in-situ building main body; 21, mortise; 3, first flexible layer; 4, hook; 5, cast-in-situ shear wall; 6, second flexible layer; 22, support step; 221, first support step; 222, second support step; 7, leveling layer; 8, filling layer; 81, polyurethane adhesive layer; 82, polyethylene rod layer; 83, fine sand layer.

DETAILED DESCRIPTION OF EMBODIMENTS

(5) The present invention will be further described below with reference to specific preferred embodiments, but the scope of protection of the present invention is not limited thereby.

Embodiment 1

(6) As shown in FIG. 1, a flexible connecting structure of a prefabricated component and a building main body in this embodiment includes multiple layers of cast-in-situ building main bodies 2 spaced up and down, and a prefabricated component 1 is connected between two adjacent cast-in-situ building main bodies 2. In this embodiment, the cast-in-situ building main bodies 2 are floor slabs, each floor slab is provided with a square mortise 21, and the wall of the mortise 21 is enclosed and reinforced by four floor beams. The prefabricated component 1 is a prefabricated toilet, the lower parts of four side walls of the prefabricated component 1 are all contracted inward to form a tenon 11 matching the mortise 21, and the upper part of the prefabricated component 1 forms a prefabricated component main body.

(7) The prefabricated component 1 is socketed to the lower layer of cast-in-situ building main body 2 by tenon-and-mortise cooperation; the inner wall of the mortise 21 is provided with a support step 22, and the lower end surface of the prefabricated component main body is supported on the support step 22. In addition, a leveling layer 7 is provided at the junction between the support step 22 and the prefabricated component 1. The leveling layer 7 is a cement mortar leveling layer, and the thickness of the cement mortar leveling layer is 15 to 25 mm.

(8) A first flexible layer 3 for reducing the connection rigidity between the prefabricated component 1 and the upper layer of cast-in-situ building main body 2 is provided at the junction between the prefabricated component 1 and the upper layer of cast-in-situ building main body 2. The first flexible layer 3 is a polystyrene foam layer, and the thickness of the first flexible layer 3 is 15 to 25 mm. A hook 4 is embedded in the upper part of the prefabricated component 1, and the hook 4 passes through the first flexible layer 3 and then extends into the upper layer of cast-in-situ building main body 2.

(9) A filling layer 8 is provided in a gap between the cast-in-situ building main body 2 and the prefabricated component 1; and the filling layer 8 is above the leveling layer 7. As shown in FIG. 3, the filling layer 8 includes a fine sand layer 83, a polyethylene rod layer 82, and a polyurethane adhesive layer 81 in sequence from bottom to top.

(10) A construction method of the flexible connecting structure of a prefabricated component and a building main body in this embodiment includes the following steps:

(11) S1: casting a bottom layer of building main body to obtain a bottom layer of cast-in-situ building main body 2, wherein four floor beams enclose a mortise 21 after casting.

(12) S2: laying a cement mortar leveling layer on a support step 22 of the mortise 21.

(13) S3: socketing the prefabricated component 1 to the cast-in-situ building main body 2, wherein the prefabricated component main body is supported by the support step 22.

(14) S4: laying the first flexible layer 3 on the top surface of the side wall of the socketed prefabricated component 1.

(15) S5: casting an upper layer of building main body on the first flexible layer 3 to obtain an upper layer of cast-in-situ building main body 2, wherein four floor beams enclose a mortise 21 after casting. A hook 4 of the prefabricated component 1 passes through the first flexible layer 3 and then extends into the upper layer of cast-in-situ building main body 2.

(16) S6: laying a filling layer 8 in a gap between the building main body 2 and the prefabricated component 1, wherein the filling layer 8 is above the leveling layer 7.

(17) S7: repeating steps S2-S6 to obtain the flexible connecting structure of the prefabricated component and the building main body.

Embodiment 2

(18) A flexible connecting structure of a prefabricated component and a building main body in this embodiment includes multiple layers of cast-in-situ building main bodies 2 spaced up and down, and a prefabricated component 1 is connected between two adjacent cast-in-situ building main bodies 2. In this embodiment, the cast-in-situ building main bodies 2 are floor slabs.

(19) A cast-in-situ shear wall 5 connecting the upper and lower layers of cast-in-situ building main bodies 2 is disposed on the external wall of one side wall of the prefabricated component 1, and a second flexible layer 6 for reducing the connection rigidity between the prefabricated component 1 and the cast-in-situ shear wall 5 is provided at the junction between the prefabricated component 1 and the cast-in-situ shear wall 5. The second flexible layer 6 is a polystyrene foam layer, and the thickness of the second flexible layer 6 is 20 to 30 mm. Lifting lugs extending toward the building main body 2 are provided both at the upper and lower ends of the cast-in-situ shear wall 5.

(20) Each floor slab is provided with a square mortise 21, and the side of the mortise 21 opposite to the cast-in-situ shear wall 5 extends to the cast-in-situ shear wall 5. The wall of the mortise 21 is enclosed and reinforced by three floor beams and lifting lugs.

(21) The prefabricated component 1 is a prefabricated toilet, the lower parts of three side walls of the prefabricated component 1 corresponding to the three floor beams are contracted inward to form a tenon 11 matching the mortise 21, and the prefabricated component 1 above the tenon 11 forms a prefabricated component main body.

(22) The prefabricated component 1 is socketed to the lower layer of cast-in-situ building main body 2 by tenon-and-mortise cooperation; three first support steps 221 are respectively provided on the internal walls of the three side walls of the mortise 21 corresponding to the three floor beams, and the lifting lug form a second support step 222. The lower end surface of the prefabricated component main body is supported on the first support steps 221, and the side wall of the tenon 11 corresponding to the lifting lug are supported on the second support step 222.

(23) A leveling layer 7 is provided on each of the first support steps 221 and the second support steps 222. The leveling layer 7 is a cement mortar leveling layer, and the thickness of the cement mortar leveling layer is 15 to 25 mm.

(24) A first flexible layer 3 for reducing the connection rigidity between the prefabricated component 1 and the upper layer of cast-in-situ building main body 2 is provided at the junction between the prefabricated component 1 and the upper layer of cast-in-situ building main body 2. The first flexible layer 3 is a polystyrene foam layer, and the thickness of the first flexible layer 3 is 15 to 25 mm. A hook 4 is embedded in the upper part of the prefabricated component 1, and the hook 4 passes through the first flexible layer 3 and then extends into the upper layer of cast-in-situ building main body 2.

(25) A filling layer 8 is provided in a gap between the cast-in-situ building main body 2 and the prefabricated component 1; and the filling layer 8 is above the leveling layer 7.

(26) A construction method of the flexible connecting structure of a prefabricated component and a building main body in this embodiment includes the following steps:

(27) S1: casting a bottom layer of building main body and a lifting lug, a bottom layer of cast-in-situ building main body 2 is obtained, wherein the lifting lugs and three floor beams enclose a mortise 21 after casting.

(28) S2: laying a cement mortar leveling layer on the first support step 221 and the second support step 222 on the internal walls of the mortise 21.

(29) S3: socketing a prefabricated component 1 to the cast-in-situ building main body 2, wherein the prefabricated component is supported by the first support step 221 and the second support step 222.

(30) S4: laying a first flexible layer 3 on the top surface of the side wall of the socketed prefabricated component 1.

(31) S5: casting an upper layer of building main body on the first flexible layer 3 to obtain an upper layer of cast-in-situ building main body 2, and casting a shear wall 5 and an upper layer of lifting lug on the external wall of the prefabricated component 1. The lifting lug and three floor beams enclose a mortise 21 after casting. In addition, a hook 4 of the prefabricated component 1 passes through the first flexible layer 3 and then extends into the upper layer of cast-in-situ building main body 2.

(32) S6: laying a filling layer 8 in the gap between the building main body 2 and the prefabricated component 1, wherein the filling layer 8 is above the leveling layer 7.

(33) S7: repeating steps S2-S6 to obtain the flexible connecting structure of the prefabricated component and the building main body.

(34) The force influence of the prefabricated toilet in the present invention on the entire structural system is analyzed as follows:

(35) The connection between the toilet and the main structure is a hinged connection: the lower end of the toilet has a socket-type mortise structure, which is directly inserted into a reserved hole of the floor, and placed on notch beams on four sides of the reserved hole of the floor or on the lifting lugs of the shear wall to form a simple support connection; a 20 mm thick polystyrene board is directly disposed on the top surface of the side walls of the toilet and the notch beams on four sides or on the bottom surface of the lifting lugs of the shear wall to separate the side walls of the toilet from the notch beams or the lifting lugs of the shear wall, and a structural tie is formed by embedding the hooks on four sides of the toilet into the notch beams on four sides or the lifting lugs of the shear wall, so that the side walls of the toilet do not participate in the stress on the notch beams of the main structure or the lifting lugs of the shear wall; when a cast-in-situ load-bearing shear wall of the main structure is outside the side walls of the toilet, a 25 mm thick flame-retardant extruded polystyrene board is disposed between the side walls of the toilet and the cast-in-situ load-bearing shear wall, so that the toilet will not affect the stress on the cast-in-situ load-bearing shear wall of the main structure while meeting the requirements for energy saving and thermal insulation. It can be seen from the above connection types and measures of various parts of the toilet and the main structure that the load generated by the toilet only produces internal force influence on the horizontal component of the main structure; when the horizontal component of the main structure is designed, the corresponding load is considered according to the design parameters of the toilet for component design; since the connection between the toilet and the vertical component of the main structure is a hinged connection, no bending moment is transmitted between each other, the load generated by the toilet only generates certain vertical axial force and additional torque for the vertical component of the main structure, and the internal force in this part is very small and basically negligible on the force of the entire main structure system. In addition, under the action of wind load and horizontal earthquake, although the overall rigidity of the toilet is relatively high, because a polystyrene board is disposed between the toilet and the main structure and does not participate in the stress on the main structure, the toilet will produce certain horizontal force on the main structure at the floor under the action of horizontal earthquake. However, this horizontal force is very small and borne by the floor, and the rigidity of the floor under this horizontal force is very high, so the impact of the horizontal force can be ignored. Therefore, the force influence of the toilet on the entire main structure system is small and can be ignored.

(36) The forgoing descriptions are only preferred embodiments of the present application, and do not limit the present application in any form. Although the present application is disclosed above with the preferred embodiments, the present application is not limited thereto. Some variations or modifications made by any skilled person familiar with the art using the disclosed technical contents without departing from the scope of the technical solution of the present application are equivalent to the equivalent embodiments, and all fall within the scope of the technical solution.