Prefabricated component, connection structure between prefabricated component and pedestal, and processing method of prefabricated component

Abstract

The present invention discloses a prefabricated component, a prefabricated component and a cap connection structure, and a prefabricated component processing method. The prefabricated component includes a steel cage, and the upper ends of multiple longitudinal main bars of the steel cage are respectively connected to sleeves. The sleeve includes a sleeve body, and a through hole is provided at the center of the sleeve body. The through hole includes a stepped first hole, a second hole, and a head hole located between the first and second holes. The upper hole diameter of the first hole is larger than the lower hole diameter, the first hole diameter is larger than the second hole diameter, and the inner wall of the first hole is at least partially provided with a first internal thread. The head at the upper end of the main bar is clamped in the head hole, and the main bar passes through the second hole downward. The sleeve of the prefabricated component of the present invention is easy to connect and operate with the steel cage, and the processing process is environmentally friendly. The prefabricated component and the cap connection structure are easy to connect and operate, and can ensure that the main bars of the steel cage and the anchoring steel bars on the cap are connected without deviation.

Description

Technical Field

[0001] The invention relates to the technical field of building prefabricated component base connectors, and in particular to a prefabricated component, a prefabricated component and a cap connection structure, and a prefabricated component processing method. Background Art

[0002] At present, municipal, water conservancy, civil, railway, power and other infrastructure constructions all require a large number of prefabricated concrete products. The Ministry of Housing and Urban-Rural Development, the Ministry of Water Resources and other departments have clearly proposed that the use of prefabricated components in engineering construction requires standardization, informatization, dataization, prefabrication and other requirements, and proposed a series of green product requirements and other solutions.

[0003] At present, there are many prefabricated products in the construction field, such as prefabricated stairs, prefabricated balconies, prefabricated interior wall panels, prefabricated hanging panels, prefabricated stadium stands, prefabricated double T-beams, prefabricated shear walls, prefabricated columns, etc., but these are all used for products above the ground. There are relatively few prefabricated products underground. The main prefabricated pipe piles, solid square piles, hollow square piles, and sheet piles are currently being prefabricated. At present, the product technologies of these piles have been innovated in production processes, production equipment, and production line layout, but all have complex production processes. When the upper end plate or spring clamping or sleeve is connected through anchor steel bars, there is a deviation from the axial steel bars of the component itself, which makes the operation of connecting underground prefabricated components with the pedestal cumbersome.

[0004] Therefore, how to design a prefabricated component, a connection structure between a prefabricated component and a foundation, and a prefabricated component processing method that can solve the above-mentioned problems is a topic that the inventor of the present application has devoted himself to studying. Summary of the invention

[0005] The purpose of the present invention is to provide a prefabricated component, a connection structure between a prefabricated component and a pedestal, and a prefabricated component processing method, wherein the connection operation between the sleeve of the prefabricated component and the steel cage is convenient, and the processing process is environmentally friendly. The connection operation between the prefabricated component and the pedestal connection structure is convenient, and it can ensure that the main reinforcement of the steel cage and the anchor reinforcement on the pedestal are connected without deviation.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a prefabricated component, including a steel cage, wherein the upper ends of multiple longitudinal main bars of the steel cage are respectively connected to sleeves, the sleeve includes a sleeve body, the center of the sleeve body is provided with a through hole, the through hole includes a stepped first hole located at the upper part, a second hole located at the lower part and a swaging hole located between the first hole and the second hole, the upper hole diameter of the first hole is larger than the lower hole diameter, the first hole diameter is larger than the second hole diameter, the inner side wall of the first hole is provided with a first internal thread, the swaging head at the upper end of the main bar is clamped in the swaging head hole, and the main bar passes downward through the second hole.

[0007] Preferably, the outer side wall of the sleeve body is provided with a side arm extending outwardly and upwardly, and a threaded hole is provided at the center of the side arm, and the threaded hole is connected to or not connected to the through hole.

[0008] A prefabricated component comprises a steel cage, wherein the upper ends of a plurality of longitudinal main bars of the steel cage are respectively connected with sleeves, the sleeve comprises a sleeve body, a through hole is provided at the center of the sleeve body, the through hole consists of a stepped first hole located at the upper part and a second hole located at the lower part, the upper hole diameter of the first hole is larger than the lower hole diameter, the second hole diameter is larger than the first hole diameter, the inner side wall of the first hole is provided with a first internal thread, a fastener is installed on the second hole, the inner cavity of the fastener is clamped with a heading of the main bar, and the main bar passes downward through the second hole.

[0009] Preferably, the inner side wall of the second hole is provided with a second internal thread, and the fastener is threadedly connected to the second internal thread.

[0010] Preferably, the fastener comprises two half-cylinders, the outer walls of the two half-cylinders are respectively provided with external threads, the two half-cylinders are butt-jointed to form a complete cylinder and are screwed to the second internal thread of the second hole through the external thread, the swaging head is clamped between the two half-cylinders, and the main rib connected to the swaging head passes downward through the second hole.

[0011] Preferably, the outer side wall of the sleeve body is provided with a side arm extending outwardly and upwardly, and a threaded hole is provided at the center of the side arm, and the threaded hole is connected to or not connected to the through hole.

[0012] A prefabricated component and pedestal connection structure, comprising a pedestal and the prefabricated component, wherein the pedestal is connected to a plurality of anchoring steel bars, and the lower ends of the plurality of anchoring steel bars are respectively screwed into the lower holes of the first holes of each sleeve of the prefabricated component.

[0013] A prefabricated component and a cap connection structure, comprising a cap and the prefabricated component, wherein the cap is connected to a plurality of anchoring steel bars, and the lower ends of the plurality of anchoring steel bars are respectively screwed into the lower holes of the first holes of each sleeve of the prefabricated component or into the threaded holes of each sleeve, or are respectively screwed into the lower holes of the first holes of each sleeve and into the threaded holes of each sleeve.

[0014] A prefabricated component and pedestal connection structure, comprising a pedestal and the prefabricated component, wherein the pedestal is connected to a plurality of anchoring steel bars, and the lower ends of the plurality of anchoring steel bars are respectively screwed into the lower holes of the first holes of each sleeve of the prefabricated component.

[0015] A prefabricated component and a cap connection structure, comprising a cap and the prefabricated component, wherein the cap is connected to a plurality of anchoring steel bars, and the lower ends of the plurality of anchoring steel bars are respectively screwed into the lower holes of the first holes of each sleeve of the prefabricated component or into the threaded holes of each sleeve, or are respectively screwed into the lower holes of the first holes of each sleeve and into the threaded holes of each sleeve.

[0016] A method for processing a prefabricated component comprises the following steps:

[0017] (1) Making a steel cage: welding the prestressed main bars and stirrups to form a steel cage, in which the main bars are arranged in the longitudinal direction;

[0018] (2) Installing the sleeve: Pass the multiple main bars of the steel cage through the through holes of the multiple sleeves, and then use the upsetting equipment to upset the main bars so that the upsetting head is stuck downward in the upsetting hole of the sleeve;

[0019] (3) Concrete spreading: The steel cage with the sleeve installed is placed as a whole into the mold cavity to spread the concrete;

[0020] (4) Prestressing: Use tensioning bolts to connect the tensioning plate of the tensioning device with the prestressed main reinforcement, and use the tensioning device to prestress the prestressed main reinforcement;

[0021] (5) Centrifugation: The entire steel mold is hoisted into a centrifuge for centrifugation. After the centrifugation is completed, the residual slurry and water are poured out;

[0022] (6) Curing: Place the mold in a curing tank for steam curing or autoclave curing, and then demold it to obtain the finished product.

[0023] A method for processing a prefabricated component comprises the following steps:

[0024] (1) Making a steel cage: welding the prestressed main bars and stirrups to form a steel cage, where the prestressed main bars are arranged along the longitudinal direction of the pile body;

[0025] (2) Installing the sleeve: installing the plurality of fasteners in the second holes of the plurality of sleeves respectively, and then passing the plurality of main bars of the steel cage through the through holes on the plurality of sleeves, and upsetting the main bars by upsetting equipment, so that the upsetting head is clamped downward in the inner cavity of the fastener, and the main bars are passed downward through the second holes of the sleeves;

[0026] (3) Concrete spreading: The steel cage with the sleeve installed is placed as a whole into the mold cavity to spread the concrete;

[0027] (4) Prestressing: Use tensioning bolts to connect the tensioning plate of the tensioning device with the prestressed main reinforcement, and use the tensioning device to prestress the prestressed main reinforcement;

[0028] (5) Centrifugation: The entire steel mold is hoisted into a centrifuge for centrifugation. After the centrifugation is completed, the residual slurry and water are poured out;

[0029] (6) Curing: Place the mold in a curing tank for steam curing or autoclave curing, and then demold it to obtain the finished product.

[0030] A method for processing a prefabricated component comprises the following steps:

[0031] (1) Making a steel cage: welding the prestressed main bars and stirrups to form a steel cage, where the prestressed main bars are arranged along the longitudinal direction of the pile body;

[0032] (2) Installing the sleeve: Use a heading device to head the prestressed main reinforcement, then clamp the head of the main reinforcement in the inner cavity of the fastener, and install the fastener together with the head of the main reinforcement in the second hole of the sleeve, and let the main reinforcement pass downward through the second hole;

[0033] (3) Concrete spreading: The steel cage with the sleeve installed is placed as a whole into the mold cavity to spread the concrete;

[0034] (4) Prestressing: Use tensioning bolts to connect the tensioning plate of the tensioning device with the prestressed main reinforcement, and use the tensioning device to prestress the prestressed main reinforcement;

[0035] (5) Centrifugation: The entire steel mold is hoisted into a centrifuge for centrifugation. After the centrifugation is completed, the residual slurry and water are poured out;

[0036] (6) Curing: Place the mold in a curing tank for steam curing or autoclave curing, and then demold it to obtain the finished product.

[0037] After adopting the above scheme, the prefabricated component, the connection structure between the prefabricated component and the pedestal and the prefabricated component processing method of the present invention have the following advantageous effects:

[0038] 1. The multiple sleeves on the prefabricated components of the present invention are easy to manufacture, have a simple and ingenious structural design, and are low in cost. The sleeves are easy to connect with the main reinforcement of the steel cage, which saves a lot of welding time and welding materials between prefabricated components and reduces environmental pollution.

[0039] 2. The sleeve of the prefabricated component and the cap connection structure of the present invention is easy to operate and can ensure that the main reinforcement and the anchor reinforcement do not deviate;

[0040] 3. Compared with the traditional connection between piles and caps, the connection structure between prefabricated components and caps of the present invention saves a lot of core-filled steel cages and concrete, saves a lot of core-filled concrete curing time, greatly saves construction period, saves traditional end plates, and saves a lot of money;

[0041] 4. The present invention is not affected by weather during construction, especially rainy and snowy weather. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of a top view and cross-section structure of a prefabricated component embodiment 1 of the present invention;

[0043] Figure 2 This is a schematic diagram of the connection structure between the sleeve and the main reinforcement of the first embodiment of the prefabricated component of the present invention;

[0044] Figure 3 This is a schematic diagram of the connection structure between the sleeve and the main reinforcement of the second embodiment of the prefabricated component of the present invention;

[0045] Figure 4 This is a schematic diagram of the connection structure between the sleeve and the main reinforcement of the third embodiment of the prefabricated component of the present invention;

[0046] Figure 5 This is a schematic diagram of the fastener structure of the third embodiment of the prefabricated component of the present invention;

[0047] Figure 6 This is a schematic diagram of the connection structure between the sleeve and the main reinforcement of the fourth embodiment of the prefabricated component of the present invention;

[0048] Figure 7 This is a structural schematic diagram of a first embodiment of the connection structure between a prefabricated component and a cap according to the present invention;

[0049] Figure 8 This is a structural schematic diagram of a second embodiment of the connection structure between a prefabricated component and a cap according to the present invention. DETAILED DESCRIPTION

[0050] The present invention is described below based on the embodiments shown in the accompanying drawings. The embodiments disclosed this time can be considered to be illustrative in all aspects and not restrictive. The scope of the present invention is not limited by the description of the following embodiments, but is only shown by the scope of the claims, and includes all modifications with the same meaning as the scope of the claims and within the scope of the claims.

[0051] The prefabricated component, the connection structure between the prefabricated component and the pedestal, and the prefabricated component processing method of the present invention are described below in conjunction with specific embodiments.

[0052] like Figure 1 The schematic diagram of the cross-sectional structure of the prefabricated component embodiment 1 of the present invention is shown, which includes a steel cage 1, which is welded by multiple longitudinal prestressed main bars 2 and multiple horizontal annular stirrups 3. The steel cage 1 can be cylindrical or square. The cross section of the prefabricated component of this embodiment is square, so the cross section of the steel cage 1 is square. The upper ends of the multiple longitudinal main bars 2 are respectively connected to sleeves 4, referring to Figure 2As shown, the sleeve 4 includes a sleeve body 5. In this embodiment, the sleeve body 5 is cylindrical. The center of the sleeve body 5 is provided with a through hole 6 that penetrates the upper and lower ends thereof for the main reinforcement 2 to pass through. The wall thickness of the sleeve body 5 is greater than or equal to 5 mm. The through hole 6 includes a stepped first hole 7 located at the upper part, a second hole 8 located at the lower part, and a head hole 9 located between the first hole 7 and the second hole 8. The stepped first hole 7 includes an upper hole 71 and a lower hole 72, wherein the aperture of the upper hole 71 is larger than the aperture of the lower hole 72. In this embodiment, the aperture of the upper hole 71 of the first hole 7 is 27 mm, and the aperture of the lower hole 72 is 18 mm. The aperture of the first hole 7 is larger than the aperture of the second hole 8. The aperture of the second hole 8 in this embodiment is 12 mm.

[0053] The upsetting hole 9 is an inverted tapered hole, and its diameter is between the first hole 7 and the second hole 8 .

[0054] At least the inner wall of the lower hole 72 of the first hole 7 is provided with a first internal thread 10, which is a coarse thread. The first internal thread 10 can be partially or entirely provided on the inner wall of the first hole 7, which belongs to the protection scope of the present invention. In this embodiment, the first internal thread 10 is entirely provided on the inner wall of the first hole 7. An annular opening groove is provided at the lower part of the outer surface of the sleeve body 5.

[0055] The upsetting head 11 at the upper end of the main reinforcement 2 is clamped in the upsetting head hole 9, and the main reinforcement 2 passes through the second hole 8 downward.

[0056] The prefabricated component production method of this embodiment comprises the following steps:

[0057] (1) Manufacturing a steel cage 1: welding a plurality of prestressed main bars 2 and a plurality of stirrups 3 to form a steel cage, wherein the prestressed main bars 2 are arranged in the longitudinal direction;

[0058] (2) Installing the sleeve 4: Passing the plurality of main bars 2 of the steel cage 1 through the through holes 6 on the plurality of sleeves 4, and then upsetting the main bars 2 by means of an upsetting device, so that the upsetting head 11 is stuck downwardly in the upsetting head hole 9 in the sleeve 4, and the main bars 2 with the upsetting head 11 cannot be pulled downwardly out of the through holes 6 of the sleeve 4;

[0059] (3) Concrete spreading: The steel cage 1 with the plurality of sleeves 4 installed is placed as a whole into the inner cavity of the pile body 12 to spread concrete;

[0060] (4) Prestressing: The tensioning plate of the tensioning device is connected to the prestressed main reinforcement 2 by tensioning bolts. Specifically, the rod of the tensioning bolt is passed through the hole on the tensioning plate and screwed to the first internal thread 10 on the upper hole 71, and the tensioning plate is connected to the prestressed main reinforcement 2. The prestressed main reinforcement 2 is tensioned by the tensioning device. The other end of the prestressed main reinforcement 2 is tensioned by the sleeve 4 and the corresponding tensioning device. In terms of the specific tensioning method, the tensioning machine can be connected to the tensioning plate by an overall tensioning method such as the tensioning head method or the tensioning disk method in the prior art, and then the prestressed main reinforcement 2 is tensioned;

[0061] (5) Centrifugation: The entire pile body 12 is hoisted into a centrifuge for centrifugation. After the centrifugation is completed, the residual slurry and water are poured out;

[0062] (6) Curing: Place the pile body in a curing tank for steam curing or autoclave curing, and then demould to obtain the finished square pile.

[0063] After the tensioning in step (4) is completed, the sleeve 4 is not taken out, but becomes a part of the square pile. The other steps of square pile production are continued until the square pile product is produced, and the sleeve becomes a part of the final square pile product.

[0064] like Figure 3 The schematic diagram of the connection structure between the sleeve and the main reinforcement of the second embodiment of the prefabricated component of the present invention is shown. Most of the structures of the prefabricated components of this embodiment are the same as those of the above-mentioned embodiment 1, and the similarities are not repeated here. The difference is that the outer wall of the sleeve body 5 is located at the lower hole 72 of the first hole 7 and extends outward and upward with a side arm 14, so that the sleeve 4 forms a Y shape, and a threaded hole 15 is provided in the center of the side arm 14, which is connected to the through hole 6, and the threaded hole 15 of the side arm 14 is used to connect the anchor steel bar of the base.

[0065] like Figure 4The schematic diagram of the connection structure between the sleeve and the main reinforcement of the third embodiment of the prefabricated component of the present invention is shown. Most of the structures of the prefabricated components of this embodiment are the same as those of the above-mentioned embodiment 1, and the similarities are not repeated here. The difference is that the sleeve 4 connected to the upper end of each longitudinal main reinforcement 2 of the steel cage 1 of this embodiment includes a sleeve body 5, and a through hole 6 is provided in the center of the sleeve body 5. The through hole 6 is composed of a stepped first hole 7 located at the upper part and a second hole 8 located at the lower part. The aperture of the upper hole 71 of the first hole 7 is larger than the aperture of the lower hole 72. The aperture of the upper hole 71 of the first hole 7 of this embodiment is 27 mm, and the aperture of the lower hole 72 is 18 mm. The aperture of the second hole 8 is larger than the aperture of the first hole 7. The aperture of the second hole 8 of this embodiment is 38 mm. The inner side wall of the first hole 7 is provided with a first internal thread 10, and the inner side wall of the second hole 8 is provided with a second internal thread 16. The second hole 8 is screwed with a fastener through the second internal thread 16. Refer to Figure 5 As shown, the fastener includes two half cylinders 17, and the outer walls of the two half cylinders 17 are respectively provided with external threads 18. The two half cylinders 17 are connected to form a complete cylinder and are screwed to the second internal thread 16 of the second hole 8 through the external thread 18. The upsetting head 11 of the main reinforcement 2 is clamped between the two half cylinders 17, and the main reinforcement 2 passes downward through the second hole 8.

[0066] The production method of the prefabricated component of this embodiment, taking square piles as an example, comprises the following steps:

[0067] (1) Manufacturing a steel cage 1: welding a plurality of prestressed main bars 2 and a plurality of stirrups 3 to form a steel cage, wherein the prestressed main bars 2 are arranged in the longitudinal direction;

[0068] (2) Installing the sleeve 4: screwing a plurality of fasteners, i.e., a complete cylinder, onto the second internal threads 16 of the second holes 8 of the plurality of sleeves 4, and then passing a plurality of main bars 2 of the steel cage 1 through the through holes 6 on the plurality of sleeves 4 and the inner cavity of the cylinder, and upsetting the main bars 2 by means of an upsetting device, so that the upsetting head 11 is clamped downwardly in the inner cavity of the cylinder, and the main bars 2 pass downwardly through the second holes 8 of the sleeve 4;

[0069] (3) Concrete spreading: The steel cage 1 with the plurality of sleeves 4 installed is placed as a whole into the inner cavity of the pile body 12 to spread concrete;

[0070] (4) Prestressing: The tensioning plate of the tensioning device is connected to the prestressed main reinforcement 2 by tensioning bolts. Specifically, the rod of the tensioning bolt is passed through the hole on the tensioning plate and screwed to the upper hole 71 of the first hole 7 of the sleeve 4, so as to connect the tensioning plate to the prestressed main reinforcement 2. The tensioning device is used to perform prestressing on the prestressed main reinforcement 2. The sleeve 4 and the corresponding tensioning device are also used to perform tensioning on the other end of the prestressed main reinforcement 2. In terms of the specific tensioning method, the tensioning machine can be connected to the tensioning plate by using the tensioning head method or the tensioning disk method in the prior art, so as to perform prestressing on the prestressed main reinforcement 2.

[0071] (5) Centrifugation: The entire pile body 12 is hoisted into a centrifuge for centrifugation. After the centrifugation is completed, the residual slurry and water are poured out;

[0072] (6) Curing: Place the pile body in a curing tank for steam curing or autoclave curing, and then demould to obtain the finished square pile.

[0073] The prefabricated components of this embodiment can also adopt the following processing steps, taking square piles as an example, including:

[0074] (1) Manufacturing a steel cage 1: welding a plurality of prestressed main bars 2 and a plurality of stirrups 3 to form a steel cage, wherein the prestressed main bars 2 are arranged in the longitudinal direction;

[0075] (2) Installing the sleeve 4: Use a heading device to head the prestressed main reinforcement 2, then clamp the head 11 of the main reinforcement 2 in the inner cavity of the complete cylinder formed by connecting the two half cylinders 17 of the fastener, and screw the fastener together with the head 11 to the second internal thread 16 of the second hole 8 of the sleeve 4, and let the main reinforcement 2 pass downward through the second hole 8;

[0076] (3) Concrete spreading: The steel cage 1 with the plurality of sleeves 4 installed is placed as a whole into the inner cavity of the pile body 12 to spread concrete;

[0077] (4) Prestressing: The tensioning plate of the tensioning device is connected to the prestressed main reinforcement 2 by tensioning bolts. Specifically, the rod of the tensioning bolt is passed through the hole on the tensioning plate and screwed to the upper hole 71 of the first hole 7 of the sleeve 4, so as to connect the tensioning plate to the prestressed main reinforcement 2. The tensioning device is used to perform prestressing on the prestressed main reinforcement 2. The sleeve 4 and the corresponding tensioning device are also used to perform tensioning on the other end of the prestressed main reinforcement 2. In terms of the specific tensioning method, the tensioning machine can be connected to the tensioning plate by using the tensioning head method or the tensioning disk method in the prior art, so as to perform prestressing on the prestressed main reinforcement 2.

[0078] (5) Centrifugation: The entire pile body 12 is hoisted into a centrifuge for centrifugation. After the centrifugation is completed, the residual slurry and water are poured out;

[0079] (6) Curing: Place the pile body in a curing tank for steam curing or autoclave curing, and then demould to obtain the finished square pile.

[0080] like Figure 6The schematic diagram of the connection structure between the sleeve and the main reinforcement of the fourth embodiment of the prefabricated component of the present invention is shown. Most of the structures of the prefabricated components in this embodiment are the same as those in the third embodiment, and the similarities are not repeated here. The difference is that the outer wall of the sleeve body 5 is located at the lower hole 72 of the first hole 7 and extends outward and upward with a side arm 14, so that the sleeve forms a Y shape. The center of the side arm 14 is provided with a threaded hole 15, which is connected to the through hole 6. The threaded hole 15 of the side arm 14 is used to connect the anchor steel bar of the base.

[0081] like Figure 7 The structural schematic diagram of the embodiment 1 of the connection structure of the prefabricated component and the cap of the present invention is shown, which includes a prefabricated component and a cap 19. The prefabricated component of this embodiment adopts a square pile 20, and the cap 19 is located on the square pile 20. The square pile 20 can adopt the structure of the first embodiment or the structure of the third embodiment of the prefabricated component. This embodiment adopts the structure of the first embodiment of the prefabricated component. A plurality of anchoring steel bars 21 are connected to the cap 19, and the lower ends of the plurality of anchoring steel bars 21 are respectively screwed to the first internal threads 10 of the lower holes 72 of the first holes 7 of each sleeve 4 of the square pile 20 through threads.

[0082] like Figure 8 The schematic diagram of the second embodiment of the connection structure between the prefabricated component and the cap is shown in FIG. Figure 7 The structures of the embodiments are the same, and the similarities are not repeated here. The difference is that the square pile 20 of this embodiment can adopt the structure of the second embodiment or the fourth embodiment of the prefabricated component, and this embodiment adopts the structure of the second embodiment of the prefabricated component. A plurality of anchoring steel bars 21 are connected to the cap 19, and the lower ends of the plurality of anchoring steel bars 21 are respectively screwed to the first internal thread 10 of the lower hole 72 of the first hole 7 of each sleeve 4 of the square pile 20 and the threaded hole 15 of the side arm 14 through threads.

[0083] When the sleeve 4 of this embodiment is connected to the anchoring steel bar 21 on the cap 19, the anchoring steel bar 21 on the cap may be screwed only to the threaded hole 15 of the side arm 14 of the sleeve 4, but not to the first internal thread 10 of the lower hole 72 of the first hole 7. In this case, the first internal thread 10 is only provided on the upper hole 71, and the lower hole 72 of the first hole 7 may not be provided with an internal thread. Alternatively, the first internal thread 10 is only screwed to the threaded hole 15 on the side arm 14.

[0084] In the above-mentioned prefabricated components, taking the square pile as an example, the first internal thread 10 on the upper hole 71 of the first hole 7 of the sleeve 4 is used to connect with the tensioning bolt to tension the prestressed main reinforcement 2. However, during or after the tensioning process, the first internal thread 10 on the upper hole 71 is basically damaged and cannot be threadedly connected with the anchor steel bar of the cap. At this time, the anchor steel bar can be threadedly connected with the first internal thread 10 on the lower hole 72 of the first hole 7 of the sleeve 4, so that the square pile and the cap can be connected.

[0085] The multiple sleeves on the prefabricated component of the present invention, taking square piles as an example, are easy to process and manufacture, the structural design is simple and ingenious, the cost is low, the sleeves are easy to connect with the main reinforcement of the steel cage, a large amount of welding time and welding materials between the square piles are saved, and environmental pollution is reduced; the sleeve of the prefabricated component and the pedestal connection structure of the present invention is easy to connect with the anchor steel bars on the pedestal, and can ensure that the main reinforcement and the anchor steel bars do not deviate; compared with the traditional pile and pedestal connection, the present invention can save a large amount of core-filled steel cages and concrete, save a large amount of core-filled concrete curing time, greatly save the construction period, and save the traditional end plate, saving a large amount of funds; the present invention is not affected by weather during construction, especially rainy and snowy weather.

[0086] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include undisclosed common knowledge or customary techniques in the art. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the claims.

[0087] It should be understood that the present invention is not limited to the embodiments, methods, structures, and precise structures shown in the drawings described above, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A prefabricated component, comprising a steel cage, characterized in that: The upper ends of the plurality of longitudinal main bars of the steel cage are respectively connected with sleeves, the sleeves include a sleeve body, a through hole is provided at the center of the sleeve body, the through hole includes a stepped first hole at the upper part, a second hole at the lower part and a head hole between the first hole and the second hole, the upper hole diameter of the first hole is larger than the lower hole diameter, the first hole diameter is larger than the second hole diameter, the inner side wall of the first hole is provided with a first internal thread, the head at the upper end of the main bar is clamped in the head hole, and the main bar passes downward through the second hole; The first internal thread on the upper hole of the first hole of the sleeve is used to connect with the tensioning bolt to tension the prestressed main reinforcement. During the tensioning process or after the tensioning is completed, the first internal thread is basically damaged and cannot be threadedly connected to the anchor steel bar of the base. At this time, the anchor steel bar can be threadedly connected to the first internal thread on the lower hole of the first hole of the sleeve.

2. The prefabricated component according to claim 1, characterized in that: The outer side wall of the sleeve body is inclined outwardly and upwardly extended with a side arm, and a threaded hole is provided at the center of the side arm. The threaded hole is connected to the through hole or not connected.

3. A prefabricated component, comprising a steel cage, characterized in that: The upper ends of the plurality of longitudinal main bars of the steel cage are respectively connected with sleeves, the sleeves include a sleeve body, a through hole is provided at the center of the sleeve body, the through hole is composed of a stepped first hole located at the upper part and a second hole located at the lower part, the upper hole diameter of the first hole is larger than the lower hole diameter, the second hole diameter is larger than the first hole diameter, the inner side wall of the first hole is provided with a first internal thread, a fastener is installed on the second hole, the inner cavity of the fastener is clamped with a head of the main bar, and the main bar passes downward through the second hole; The first internal thread on the upper hole of the first hole of the sleeve is used to connect with the tensioning bolt to tension the prestressed main reinforcement. During the tensioning process or after the tensioning is completed, the first internal thread is basically damaged and cannot be threadedly connected to the anchor steel bar of the base. At this time, the anchor steel bar can be threadedly connected to the first internal thread on the lower hole of the first hole of the sleeve.

4. The prefabricated component according to claim 3, characterized in that: The inner side wall of the second hole is provided with a second internal thread, and the fastener is threadedly connected to the second internal thread.

5. The prefabricated component according to claim 4, characterized in that: The fastener includes two half-cylinders, and the outer walls of the two half-cylinders are respectively provided with external threads. The two half-cylinders are butt-jointed to form a complete cylinder and are screwed to the second internal thread of the second hole through the external thread. The swaging head is clamped between the two half-cylinders, and the main rib connected to the swaging head passes downward through the second hole.

6. The prefabricated component according to claim 3, characterized in that: The outer side wall of the sleeve body is inclined outwardly and upwardly extended with a side arm, and a threaded hole is provided at the center of the side arm. The threaded hole is connected to the through hole or not connected.

7. A prefabricated component and a cap connection structure, characterized in that: It comprises a pedestal and the prefabricated component according to claim 1, wherein a plurality of anchoring steel bars are connected to the pedestal, and the lower ends of the plurality of anchoring steel bars are respectively screwed into the lower holes of the first holes of each sleeve of the prefabricated component.

8. A prefabricated component and a cap connection structure, characterized in that: It comprises a pedestal and the prefabricated component according to claim 2, wherein a plurality of anchoring steel bars are connected to the pedestal, and the lower ends of the plurality of anchoring steel bars are respectively screwed into the lower holes of the first holes of each sleeve of the prefabricated component or into the threaded holes of each sleeve, or are respectively screwed into the lower holes of the first holes of each sleeve and into the threaded holes of each sleeve.

9. A prefabricated component and a cap connection structure, characterized in that: It comprises a pedestal and the prefabricated component according to any one of claims 3 to 5, wherein a plurality of anchoring steel bars are connected to the pedestal, and the lower ends of the plurality of anchoring steel bars are respectively screwed into the lower holes of the first holes of each sleeve of the prefabricated component.

10. A prefabricated component and a cap connection structure, characterized in that: It comprises a pedestal and the prefabricated component according to claim 6, wherein a plurality of anchoring steel bars are connected to the pedestal, and the lower ends of the plurality of anchoring steel bars are respectively screwed into the lower holes of the first holes of each sleeve of the prefabricated component or into the threaded holes of each sleeve, or are respectively screwed into the lower holes of the first holes of each sleeve and into the threaded holes of each sleeve.

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