Prefabricated house prefabricated slab connecting structure

Abstract

The utility model discloses a prefabricated house prefabricated slab connecting structure which is characterized in that prefabricated steel riveting rings are adopted for connection of two prefabricated slabs in the same plane, circular rings of the steel riveting rings are arranged in a staggered mode on the splicing face, meanwhile, deformed steel bars penetrate through the steel riveting rings on a wall body in sequence, and then the steel riveting rings are connected into a whole in a grouting mode at the positions of grooves. The connecting structure is easy to construct and operate on site, the connecting strength between the walls is good, the overall structure is simple, the on-site construction and operation are convenient, compared with a traditional connecting mode that steel bars are transversely arranged in the prefabricated walls, the connecting structure can reduce the problem that the stress bars are bent in the conveying process of the walls, meanwhile, through arrangement of the staggered rings and the longitudinal stress bars, the construction efficiency is improved, and the construction cost is reduced. The connecting strength of the wall can be improved, and meanwhile the stress rigidity of the wall can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated buildings, and particularly relates to a connecting structure for precast slabs of a prefabricated house. Background Technique

[0002] A prefabricated building transfers a large amount of on-site operation work in the traditional construction method to a factory. Building components and fittings are processed and manufactured in the factory and transported to the construction site of the building, and are assembled and installed on-site through a reliable connection method.

[0003] In the prior art, the reliable connection between precast exterior walls is mostly realized through connection components or post-cast belts. The structure of the post-cast belt includes: reinforcing bars protruding from the top or side end of the precast wall, and the protruding reinforcing bars are anchored in the cast-in-place part of another wall, and then the connection between the precast exterior walls is realized by pouring concrete. However, this structure has technical problems such as complex molds during production, easy bending of the protruding reinforcing bars during transportation, complex on-site construction operations, and large concrete pouring volume. At the same time, there is a lack of longitudinal force-bearing structure at the connection between the two walls, resulting in poor overall strength of the spliced wall. Summary of the Invention

[0004] In view of this, the purpose of the utility model is to propose a connecting structure for precast slabs of a prefabricated house with reliable connection and good structural stability, which can overcome the above technical problems.

[0005] The purpose of the utility model is realized by the following technical solutions:

[0006] A connecting structure for precast slabs of a prefabricated house, which includes a vertical joint connection of precast slabs and a horizontal joint connection of precast slabs. The vertical joint connection of precast slabs includes the connection of two precast slabs in the same plane and the perpendicular intersection of two precast slabs; the horizontal joint connection of precast slabs includes the connection among the upper and lower precast slabs and the floor slab, the connection between the precast slab and the floor slab, and the connection between the two floor slabs; the connection of two precast slabs in the same plane includes multiple groups of steel rivet rings connected to the splicing surface of the precast slabs. The ring bodies of the multiple groups of steel rivet rings are horizontally located between the splicing surfaces and are staggered. Connecting steel bars are inserted into the steel rivet rings, and a cast-in-place body is also arranged between the splicing surfaces of the precast slabs; the connection of two mutually perpendicular precast slabs and the horizontal joint connection of precast slabs are realized through the cooperation of nuts and screws.

[0007] The above-mentioned connecting structure for precast slabs of a prefabricated house is such that a pouring groove is provided on the splicing surface of the precast slab connected with the steel rivet ring.

[0008] The above-mentioned connecting structure for precast slabs of a prefabricated house is such that the steel rivet ring is composed of a ring body and a connecting rod. An internal nut sleeve is precast in the pouring groove, and threads are processed on the connecting rod of the steel rivet ring, and the connecting rod is connected to the internal nut sleeve.

[0009] The above-mentioned prefabricated panel connection structure for prefabricated houses is that the connection of the two prefabricated panels perpendicular to each other includes a prefabricated through hole opened in the thickness direction of one prefabricated panel and an internal nut sleeve coaxially arranged with the prefabricated through hole opened on the other prefabricated panel. The head of the connecting bolt is clamped on the prefabricated through hole, and the screw rod passes through the prefabricated through hole and is connected to the internal nut sleeve.

[0010] The above-mentioned prefabricated panel connection structure for prefabricated houses is that a sinking groove is provided on one side of the prefabricated through hole on the prefabricated panel, the head of the connecting bolt is located in the sinking groove, and concrete is filled in the sinking groove; a pouring groove is opened on the prefabricated panel provided with the internal nut sleeve, and concrete is poured in the pouring groove.

[0011] The above-mentioned prefabricated panel connection structure for prefabricated houses is that the connection between the two floor slabs includes a fitting surface step provided on the floor slab, an internal nut sleeve B is embedded on the fitting surface step, and further includes a connecting steel plate and a connecting bolt. Two through holes are provided on the connecting steel plate. The connecting steel plate is lapped on the fitting surface steps of the two spliced floor slabs. The through holes on the connecting steel plate correspond to the internal nut sleeve B. The connecting bolt passes through the connecting steel plate and is connected to the internal nut sleeve B, and concrete is poured at the joint and the fitting surface step of the two floor slabs.

[0012] The above-mentioned prefabricated panel connection structure for prefabricated houses is that the connection between the prefabricated panel and the floor slab includes: an internal nut sleeve C provided on the top surface of the prefabricated panel, a fitting surface step provided on the floor slab, a prefabricated through hole B is prefabricated on the fitting surface step, and the screw rod of the connecting bolt passes through the prefabricated through hole B and is connected to the internal nut sleeve C.

[0013] The above-mentioned prefabricated panel connection structure for prefabricated houses is that a sunken floor support platform is provided on the prefabricated panel, and the end of the floor slab is located on the floor support platform.

[0014] The above-mentioned prefabricated panel connection structure for prefabricated houses is that the connection among the upper and lower two prefabricated panels and the floor slab is as follows: a bolt insertion groove is provided on the upper prefabricated panel, a vertical prefabricated through hole C is provided in the bolt insertion groove, a sunken floor support platform is provided on the lower prefabricated panel, a vertical internal nut sleeve D is prefabricated on the floor support platform, a fitting surface step is provided on the floor slab, a prefabricated through hole B is prefabricated on the fitting surface step, the end of the floor slab is located on the floor support platform, and the screw rod of the connecting bolt passes through the prefabricated through hole C and the prefabricated through hole B and is connected to the internal nut sleeve D.

[0015] The beneficial effects of the present utility model are:

[0016] The present utility model proposes a construction method for existing prefabricated houses. First, each room of the house is divided into a unit (functional room), and the size of the precast slab is designed according to the division of each functional room. Then, after the precast slab is processed in the project, it is assembled and constructed on site. When processing the precast slab of the wall, the side plate is provided with reinforcing bars. In this way, the reinforcing bars of the side plate and the floor of the final functional room are integrally poured, which can ensure the integrity and stability of the house. At the same time, connection reinforcement structures and waterproof sealing measures are proposed for the vertical and horizontal joints formed by the splicing of each precast slab, which can realize the rapid connection between precast slabs and prevent water leakage at the joints.

[0017] For the connection of two precast slabs located on the same plane, a prefabricated steel rivet ring is used. The circular rings of the steel rivet ring are staggered on the splicing surface. At the same time, the steel rivet rings on the wall are sequentially penetrated by threaded steel bars, and then grouted at the groove position to be connected into a whole. This connection structure has simple on-site construction operation, good connection strength between walls, simple overall structure, and convenient on-site construction operation. Compared with the traditional connection method of horizontally placing steel bars in precast walls, this connection structure can reduce the problem of bending of stress bars during the transportation of walls. At the same time, by setting staggered rings and longitudinal stress bars, the connection strength of the wall can be improved, and the stress stiffness of the wall can also be improved.

[0018] Other advantages, objectives and features of the present utility model will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present utility model. The objectives and other advantages of the present utility model can be realized and obtained through the following specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings, where:

[0020] Figure 1 is a floor plan of an arbitrary prefabricated house of the present utility model;

[0021] Figure 2 is a schematic diagram of the first type of wall precast slab of the present utility model;

[0022] Figure 3 is a schematic diagram of the second type of wall precast slab of the present utility model;

[0023] Figure 4 is a schematic diagram of the third type of wall precast slab of the present utility model;

[0024] Figure 5 is a schematic diagram of the fourth type of wall precast slab of the present utility model;

[0025] Figure 6 is a schematic diagram of the floor slab;

[0026] Figure 7 It is a schematic diagram of the vertical joint connection structure after the horizontal splicing of two precast slabs;

[0027] Figure 8 It is a schematic diagram of the vertical joint connection structure of two mutually perpendicular precast slabs;

[0028] Figure 9 It is a schematic diagram of the vertical joint connection structure of two mutually perpendicular precast slabs under another structure

[0029] Figure 10 It is a schematic diagram of the connection structure of the horizontal joint between the spliced floor slabs;

[0030] Figure 11 It is a schematic diagram of the connection structure between the floor slab and the wall precast slab;

[0031] Figure 12 It is a schematic diagram of the connection structure between the floor slab and the external wall precast slab;

[0032] Figure 13 It is a schematic diagram of the connection structure among the upper and lower wall precast slabs and the floor slab of a building with two floors or more;

[0033] Figure 14 It is a schematic diagram of the structure of the steel riveting ring 3;

[0034] Figure 15 It is a cross-sectional view of the combined use of a steel riveting ring and a connecting steel bar.

[0035] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0036] 1. Precast slab; 2. Wall panel; 3. Steel riveting ring; 4. Connecting steel bar; 5. Cast-in-place body; 6. Pouring groove; 7. Precast through-hole; 8. Inner nut sleeve; 9. Connecting bolt; 10. Sunk groove; 11. Splicing surface step; 12. Inner nut sleeve B; 13. Connecting steel plate; 14. Precast through-hole B; 15. Floor support platform; 16. Bolt placement groove; 17. Precast through-hole C; 19. Foam material; 20. Building sealant; 21. Concrete mortar; 22. Alkali-resistant fiberglass mesh cloth; 23. Floor; 24. Self-adhesive strip plugging. Specific embodiments

[0037] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, rather than for limiting the protection scope of the present invention.

[0038] Embodiment 1

[0039] Construction method of prefabricated house. The house is composed of more than one functional room, and the functional rooms can be regarded as different rooms in a set of houses, such as living room, dining room, kitchen, bedroom. The method includes the following steps

[0040] a. Divide it into a precast panel splicing structure diagram according to the side wall size and roof size of the functional room, and the division basis is that each divided precast panel can be processed on a standard membrane table;

[0041] b. Prefabricate each precast panel in the factory according to the precast panel splicing structure diagram and encode it. When processing the precast panel, if the side of the panel is the joint surface with the floor of the functional room, the side plate of the precast panel is provided with reinforcing bars; during the processing of the precast panel, doors, windows, and socket positions are reserved according to the design requirements of the functional room door;

[0042] c. Transport the precast panels processed according to the precast panel splicing structure diagram to the planned location of the house. After the foundation construction is completed, assemble the side walls of each functional room according to the drawings and the codes on the precast panels, trim the side plate reinforcing bars of the precast panels to be parallel to the ground or welded to the ground steel mesh, and then cast the floors 23 of each functional room;

[0043] d. Complete the splicing of the roof plates of each functional room according to the requirements of the precast panel splicing structure diagram;

[0044] e. Complete the water, electricity and exterior wall decoration according to the design requirements.

[0045] The connection of the precast panels of the prefabricated house is divided into the vertical joint connection of the precast panels and the horizontal joint connection of the precast panels. The vertical joint connection of the precast panels includes the connection of two precast panels 1 in the same plane and the perpendicular intersection of two precast panels 1; the horizontal joint connection of the precast panels includes the connection among the upper and lower two precast panels 1 and the floor slab 2, the connection between the precast panel 1 and the floor slab 2, and the connection between the two floor slabs 2. The structures of the above various connection methods are as follows:

[0046] As the floor slab 2 of the house, as Figure 6 shown, it is a precast panel. A splicing surface step 11 is processed at the intersection corner of the upper end face and the side face of the floor slab 2. Among them, precast through holes B14 are processed on the two splicing surface steps in contact with the wall surface, and internal nut sleeves B12 are embedded on the other two splicing surface steps 11.

[0047] As Figure 10As shown in the figure, the connection between the floor slab 2 and the joint surface of the floor slab 2 further includes a connecting steel plate 13 and a connecting bolt 9. There are two through holes on the connecting steel plate 13. The connecting steel plate 13 overlaps on the joint surface steps 11 of the two spliced floor slabs 2. The through holes on the connecting steel plate 13 correspond to the inner nut sleeve B12. The connecting bolt 9 passes through the connecting steel plate 13 and is connected to the inner nut sleeve B12. And at the joint of the two floor slabs 2 and on the joint surface steps 11, concrete mortar 21 is poured. At the same time, alkali-resistant fiberglass mesh cloth 22 is pressed into the putty layer.

[0048] There are three shapes of the precast slab 1 as the wall.

[0049] The first structure is as shown in Figure 2 and Figure 4 As shown in the figure, the thickness of the precast slab 1 as the wall is 150mm. The height of each precast slab is 50mm - 100mm greater than the designed height of each floor of the house (the cast-in-place thickness of the house floor 23). On the left and right side surfaces of the precast slab 1 as the wall, there are casting grooves 6 with a trapezoidal cross-section. The depth of the casting groove is 60mm, the outer opening width is 90mm, and the inner opening is 70mm. Inner nut sleeves 8 are embedded in the precast slab 1. The screw interfaces of the inner nut sleeves 8 are located in the casting grooves 6, but the heights of the inner nut sleeves 8 in the two connected precast slabs 1 are different. On the lower side surface of the precast slab 1 as the wall, there are side reinforcement bars, and the side reinforcement bars are cast integrally with the ground 23. The top surface of the precast slab 1 is used to place the precast floor slab 2. Therefore, inner nut sleeves C are also embedded at the top of the precast slab 1.

[0050] The connection of the wall precast slabs 1 of this structure at the vertical joints in the same plane is as shown in Figure 7 .14 and 15. First, steel rivet rings 3 are respectively connected to multiple groups of inner nut sleeves 8 located in the casting grooves 6 of the precast slab 1. The steel rivet ring (3) is composed of a ring body and a connecting rod. Threads matching the inner nut sleeve 8 are processed on the connecting rod. After connecting the steel rivet rings 3 according to the number of the inner nut sleeves 8, when the two spliced precast slabs 1 are placed in place, the ring bodies on the steel rivet rings 3 are horizontally located between the joint surfaces and are staggered. Then, connecting steel bars 4 are inserted into the steel rivet rings 3, and high-strength grouting material is used to grout into the splicing joints of the two precast slabs and the casting grooves 6 to form a cast-in-place body 5. To further increase the waterproof property, foam material 19 and building sealant 20 with better sealing performance are poured between the splicing joints of the two precast slabs on the outer wall side.

[0051] The precast slab 1 as the wall is an inner wall, as shown in Figure 4 and 11. Its connection with the floor slab 2 is that there are joint surface steps 11 opened on both sides of the width of the floor slab 2 on the floor slab 2. Precast through holes B14 are precast on the joint surface steps 11. The screw rod of the connecting bolt 9 passes through the precast through hole B14 and is connected to the inner nut sleeve C.

[0052] If the precast slab 1 serving as a wall is an exterior wall, as Figure 12 shown, to improve waterproofing, a sunken floor support platform 15 is provided at the top of the precast slab 1, and the end joint surface step 11 of the floor slab 2 is located on the floor support platform 15. Its connection with the floor slab 2 is that fitting surface steps 11 are provided on both sides of the width of the floor slab 2, and precast through holes B14 are precast on the fitting surface steps 11. After the screw rod of the connecting bolt 9 passes through the precast through hole B14, it is connected to the inner nut sleeve C.

[0053] The second structure of the precast slab 1 serving as a wall is as Figure 3 and Figure 4 shown. It is to adapt to the perpendicular intersection of two walls serving as exterior walls. The perpendicular intersecting walls include the side surface of one precast slab 1 abutting against the plate surface of another precast slab 1. For the precast slab 1 of this structure, a casting groove 6 is provided on one side surface in the height direction, and a precast inner nut sleeve 8 is provided in the casting groove 6. On the other side in the height direction, that is, at the contact surface position of the precast slab 1 being abutted, a precast through hole 7 is provided, and a sinking groove 10 is provided on one side plate surface of the precast slab 1 provided with the precast through hole 7.

[0054] The connection method of the precast slab 1 where two wall panels serving as exterior walls intersect perpendicularly is that, as Figure 8 and Figure 9 shown, the first type of wall precast slab 1 abuts against another wall precast slab 1, and then the connecting bolt 9 is inserted from the first type of wall precast slab 1. The head of the connecting bolt 9 is located in the sinking groove 10, and the screw rod passes through the precast through hole 7 and is then connected to the inner nut sleeve 8.

[0055] The connection between the top surface of the second type of wall precast slab 1 and the floor slab 2 is the same as the first type, and the reinforcement bars protruding from the bottom side are cast in situ with the ground 23 as a whole.

[0056] The third structure of the precast slab 1 serving as a wall is as Figure 5 shown. It is mainly used as a wall above the second floor. Based on the first and second precast slab structures, its main difference is that a connection structure convenient for connecting the precast slab on the first floor is added. Specifically, a bolt insertion groove 16 is provided on the precast slab 1. The bolt insertion groove 16 is formed by partial area recessing inward in the thickness direction of the precast slab, and a precast through hole C17 parallel to the height direction of the precast slab is provided in the bolt insertion groove 16.

[0057] During use, a sunken floor support platform 15 is provided on the precast slab 1 below, a vertical inner nut sleeve C is precast on the floor support platform 15, fitting surface steps 11 are provided on the floor slab 2, and precast through holes B14 are precast on the fitting surface steps 11. The end of the floor slab 2 is located on the floor support platform 15. After the screw rod of the connecting bolt 9 passes through the precast through hole C17 and the precast through hole B14, it is connected to the inner nut sleeve C.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions, and they should all be covered by the scope of the claims of the present invention.

Claims

1. An assembled house precast slab connection structure, which includes the connection of vertical joints of precast slabs and the connection of horizontal joints of precast slabs, is characterized in that: The vertical joint connection of the precast slabs includes the connection of two precast slabs (1) in the same plane and the perpendicular intersection of two precast slabs (1); the horizontal joint connection of the precast slabs includes the connection among the upper and lower precast slabs (1) and the floor slab (2), the connection between the precast slab (1) and the floor slab (2), and the connection between two floor slabs (2); the connection of two precast slabs (1) in the same plane includes multiple groups of steel rivet rings (3) connected to the splicing surfaces of the precast slabs (1). The ring bodies of the multiple groups of steel rivet rings (3) are horizontally located between the splicing surfaces and are staggered. Connecting steel bars (4) are inserted into the steel rivet rings (3), and a cast-in-place body (5) is also provided between the splicing surfaces of the precast slabs (1); the connection of two precast slabs (1) perpendicular to each other and the horizontal joint connection of the precast slabs are realized by matching nuts and screws.

2. The prefabricated panel connection structure of the prefabricated house according to claim 1, characterized in that: A pouring groove (6) is provided on the splicing surface of the precast slab (1) connected with the steel rivet ring (3).

3. The prefabricated panel connection structure of the prefabricated house according to claim 2, characterized in that: The steel rivet ring (3) is composed of a ring body and a connecting rod. An internal nut sleeve (8) is precast in the pouring groove (6). Threads are processed on the connecting rod of the steel rivet ring (3), and the connecting rod is connected to the internal nut sleeve (8).

4. The prefabricated panel connection structure of the prefabricated house according to claim 1 or 3, characterized in that: The connection of two precast slabs (1) perpendicular to each other includes a precast through hole (7) opened in the thickness direction of one precast slab (1) and an internal nut sleeve (8) opened on the other precast slab (1) and coaxially arranged with the precast through hole (7). The head of the connecting bolt (9) is clamped on the precast through hole (7), and the screw of the connecting bolt (9) passes through the precast through hole (7) and is connected to the internal nut sleeve (8).

5. The prefabricated panel connection structure of the prefabricated house according to claim 4, characterized in that: A sunk groove (10) is provided on one side of the precast through hole (7) of the precast slab (1). The head of the connecting bolt (9) is located in the sunk groove (10), and concrete is filled in the sunk groove (10); a pouring groove (6) is opened on the precast slab (1) provided with the internal nut sleeve (8), and concrete is poured in the pouring groove (6).

6. The prefabricated panel connection structure of the prefabricated house according to claim 1, characterized in that: The connection between two floor slabs (2) includes a splicing surface step (11) provided on the floor slab (2). An internal nut sleeve B (12) is embedded on the splicing surface step (11). It also includes a connecting steel plate (13) and a connecting bolt (9). Two through holes are provided on the connecting steel plate (13). The connecting steel plate (13) overlaps on the splicing surface steps (11) of the two spliced floor slabs (2). The through holes on the connecting steel plate (13) correspond to the internal nut sleeve B (12). The connecting bolt (9) passes through the connecting steel plate (13) and is then connected to the internal nut sleeve B (12), and concrete is poured at the joint of the two floor slabs (2) and on the splicing surface step (11).

7. The prefabricated panel connection structure of the prefabricated house according to claim 1, characterized in that: The connection between the precast slab (1) and the floor slab (2) includes: an internal nut sleeve C provided on the top surface of the precast slab (1), a splicing surface step (11) provided on the floor slab (2), a precast through hole B (14) precast on the splicing surface step (11), and the screw of the connecting bolt (9) passes through the precast through hole B (14) and is then connected to the internal nut sleeve C.

8. The prefabricated panel connection structure of the prefabricated house according to claim 7, characterized in that: A sunken floor support platform (15) is provided on the precast slab (1), and the end of the floor slab (2) is located on the floor support platform (15).

9. The prefabricated panel connection structure of the prefabricated house according to claim 1, wherein: The connection among the upper and lower precast slabs (1) and the floor slab (2) is as follows: on the upper precast slab (1), there is a bolt insertion groove (16), and in the bolt insertion groove (16), there is a vertically downward precast through hole C (17); on the lower precast slab (1), there is a sunken floor support platform (15), and on the floor support platform (15), a vertical internal nut sleeve C is precast; on the joining surface step (11) of the floor slab (2), a precast through hole B (14) is precast. The end of the floor slab (2) is located on the floor support platform (15), and the screw of the connecting bolt (9) passes through the precast through hole C (17) and the precast through hole B (14) and then is connected to the internal nut sleeve C.

Images