A prefabricated building structure

Abstract

The present invention provides a prefabricated building structure, including a hollow part, a solid part and an embedded pipe. The interior of the hollow part is hollow and surrounded by a core groove, and the hollow part is connected to the solid part; the embedded pipe is arranged in the solid part, and one end of the embedded pipe extends to the end of the solid part away from the hollow part. The arrangement of the embedded pipe improves the strength of the solid part, so that the longitudinal force bearing capacity and shear force resistance capacity are increased instead of decreased relative to the solid pile, thereby improving the tensile resistance, compression resistance, earthquake resistance and durability of the prefabricated building structure. One end of the embedded pipe extends to the end of the solid part, which, on the one hand, greatly improves the bearing capacity of the end of the solid part and prevents the concrete at the end of the solid part from falling off after being stressed; on the other hand, it is convenient to connect with external steel bars, especially when the prefabricated building structure is connected to the pedestal, the reinforcement ratio in the pedestal can be increased to increase the strength of the pedestal.

Description

Technical Field

[0001] The invention relates to the technical field of construction, and in particular to a prefabricated building structure. Background Art

[0002] In the field of building technology, in order to facilitate production and processing and reduce construction time, prefabricated building structures are usually made in factories and then transported to the construction site for use. Existing prefabricated building structures are mostly solid structures or hollow structures, but solid structures have problems such as being too heavy to transport and wasting raw materials; on the other hand, although hollow structures can save raw materials, their seismic mechanical properties and durability cannot be guaranteed. Therefore, there is a need for an improved prefabricated building structure that can reduce weight, save raw materials, and ensure its seismic mechanical properties and durability. Summary of the invention

[0003] In view of the above, it is necessary to provide an improved prefabricated building structure.

[0004] The present invention provides a prefabricated building structure, comprising a hollow part, a solid part and a pre-buried pipe, wherein the interior of the hollow part is hollow and surrounded by a core groove, and the hollow part is connected to the solid part; the pre-buried pipe is arranged in the solid part, and one end of the pre-buried pipe extends to the end of the solid part away from the hollow part.

[0005] The pile body in the prefabricated building structure provided by the present invention includes a solid part and a hollow part, which reduces the amount of raw materials, reduces the weight, and saves the production cost; at the same time, when the prefabricated building structure is buried underground, it is only necessary to locate the solid part in the depth area with the highest frequency of seismic waves below the foundation (generally 2 meters to 15 meters below the foundation), so as to ensure the seismic resistance of the prefabricated building structure and the reliability of the prefabricated building structure when in service. In addition, the provision of the embedded pipe improves the strength at the solid part, so that the longitudinal force bearing capacity and shear resistance capacity increase instead of decrease relative to the solid pile, thereby improving the tensile resistance, compressive resistance, seismic resistance and durability of the prefabricated building structure. One end of the embedded pipe extends to the end of the solid part, which, on the one hand, greatly improves the bearing capacity of the end of the solid part and prevents the concrete at the end of the solid part from falling off after being stressed; on the other hand, it is convenient to connect with external steel bars, especially when the prefabricated building structure is connected to the cap, the reinforcement ratio in the cap can be increased to increase the strength of the cap.

[0006] In one embodiment of the present invention, the end of the embedded pipe is hollow and is used to connect external steel bars.

[0007] Such an arrangement makes it easy to insert the external steel bar into the end of the embedded pipe and fix it by welding, gluing, etc. The fixing method is simple, convenient for on-site construction, and low cost.

[0008] In one embodiment of the present invention, the end of the embedded pipe is provided with an internal thread for connecting to external steel bars.

[0009] With such arrangement, when the external steel bar has an external thread, it can be quickly threadedly connected with the internal thread of the end of the embedded pipe, the connection method is simple, and the strength after connection is high.

[0010] In one embodiment of the present invention, the interior of the embedded tube is hollow, one end of the embedded tube extends to the end of the solid portion away from the hollow portion, and the other end is communicated with the core groove.

[0011] With such a configuration, the embedded pipe can be connected to the core groove to play a role in drainage. When the prefabricated pile is driven or pressed into the ground, the rapidly pressurized pore water in the foundation soil can smoothly penetrate into the core groove and the embedded pipe, and the water can be discharged to the ground with a submersible pump. The pore water in the foundation around the pile body can gradually penetrate into the cavities of the pile body. When the water level rises to near the ground, drainage is carried out. After drainage, the foundation soil around the pile body will tightly hold the pile body, improving the bonding strength between the prefabricated building structure and the foundation soil.

[0012] In one embodiment of the present invention, the embedded pipe is arranged along the axial direction of the prefabricated building structure.

[0013] Such an arrangement can not only better bear the vertical force, but also discharge the groundwater through a shorter path, and is simple to process and form and easy to produce.

[0014] In one embodiment of the present invention, the diameter of the embedded pipe is 10 mm to 100 mm.

[0015] With such arrangement, the embedded pipe can play a better supporting role and can reduce the amount of concrete used to reduce costs.

[0016] In one embodiment of the present invention, the prefabricated building structure further includes a first cage body, which is arranged in the solid part and the hollow part, and the first cage body includes a first axial rib body and a first radial rib body, and the first axial rib body is arranged along the axial direction of the prefabricated building structure; a plurality of the first axial rib bodies form a frame of the first cage body, the first radial rib body spirally surrounds the frame of the first cage body, and the first radial rib body is fixedly connected to the first axial rib body.

[0017] With such arrangement, the first cage body has a high load-bearing strength and is simple to process. It is only necessary to wind the first radial reinforcement body onto the frame formed by the first axial reinforcement body while the plurality of first axial reinforcement bodies are being axially transported, thereby saving work hours. Moreover, the number of spiral turns and the encrypted length of the first radial reinforcement body can be increased at locations with greater stress as required, such as increasing the number of spiral turns and the encrypted length of the first radial reinforcement body at both ends of the first cage body, thereby preventing the prefabricated building structure from being damaged by excessive stress when buried underground.

[0018] In one embodiment of the present invention, the prefabricated building structure further includes a second cage, which is arranged in the solid part, and the second cage includes a second axial rib and a second radial rib, and the second axial rib is arranged along the axial direction of the prefabricated building structure; a plurality of the second axial ribs form a frame of the second cage, the second radial ribs spirally surround the frame of the second cage, and the second radial ribs are fixedly connected to the second axial ribs.

[0019] In this way, the second cage increases the local reinforcement ratio of the solid part, so that the longitudinal force bearing capacity and shear resistance capacity increase instead of decrease compared with the solid pile, thereby improving the tensile resistance, compressive resistance, seismic resistance and durability of the prefabricated building structure.

[0020] In one embodiment of the present invention, there are multiple pre-buried pipes, and the multiple pre-buried pipes are respectively distributed between the first cage body and the second cage body and / or inside the second cage body.

[0021] With this arrangement, the prefabricated building structure has steel structures everywhere, and the steel structures and concrete structures cooperate with each other to greatly improve the strength of the prefabricated building structure.

[0022] In one embodiment of the present invention, the prefabricated building structure further comprises a mounting plate, which is disposed on a wall surface of the core groove close to one end of the solid portion, and the mounting plate is connected to the embedded pipe.

[0023] With such arrangement, the force borne by the embedded pipe can be transmitted to the mounting plate and dispersed into the prefabricated building structure; and the mounting plate itself can play a supporting role inside the prefabricated building structure, preventing the prefabricated building structure from deforming during service, and preventing the concrete from falling off on the wall surface of the core groove relatively close to the solid part.

[0024] In one embodiment of the present invention, the interior of the embedded pipe is hollow, a drainage hole is provided on the mounting plate, and the embedded pipe is connected to the core groove through the drainage hole.

[0025] Such an arrangement can not only improve the strength of the prefabricated building structure through the installation plate, but also will not hinder the drainage function in the prefabricated building structure.

[0026] In one embodiment of the present invention, the mounting plate is connected to the first cage body.

[0027] With such arrangement, during the production process of the prefabricated building structure, the relative position between the mounting plate and the first cage body is fixed, which is beneficial to improving the load-bearing capacity and integrity of the prefabricated building structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of a prefabricated building structure in a first embodiment of the present invention;

[0029] Figure 2 for Figure 1 The structural schematic diagram of the embedded pipe shown;

[0030] Figure 3 This is a schematic diagram of the structure of the embedded pipe in the second embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of the embedded pipe in the third embodiment of the present invention;

[0032] Figure 5 This is a schematic structural diagram of a pre-buried pipe in a fourth embodiment of the present invention;

[0033] Figure 6 is a schematic diagram of a pre-buried pipe in a fifth embodiment of the present invention;

[0034] Figure 7 is a schematic diagram of a prefabricated building structure in a sixth embodiment of the present invention;

[0035] Figure 8 for Figure 7 A cross-sectional view of the prefabricated building structure shown at section AA;

[0036] Fig. 9 for Figure 7 A sectional view of the prefabricated building structure shown at section BB;

[0037] Fig.10 for Figure 1 The schematic diagram of the use of the embedded connector shown;

[0038] Fig.11 This is a schematic diagram of the use of two prefabricated building structures connected together;

[0039] Fig.12 A schematic diagram of the structure of a quick docking assembly in one embodiment;

[0040] Fig.13 It is a structural schematic diagram of a quick docking assembly in another embodiment;

[0041] Fig.14 It is a structural diagram of the prefabricated building structure and the foundation;

[0042] Fig.15 for Fig.14 A partial enlarged view of section C is shown.

[0043] Main component symbols

[0044] 100, prefabricated building structure; 10, hollow part; 20, solid part; 30, first cage; 40, second cage; 11, core groove; 50, mounting plate; 31, first axial rib; 32, first radial rib; 41, second axial rib; 42, second radial rib; 51, drainage hole; 60, corner guard; 70, embedded connector; 80, embedded pipe; 311, upsetting head; 71, shrinkage port; 72, annular protrusion; 200, quick docking assembly; 210, first plug Platform; 211, first fixing part; 212, first plug-in part; 213, first extension part; 214, first step surface; 220, first base; 221, second fixing part; 222, fin; 230, second plug-in platform; 231, third fixing part; 232, second plug-in part; 233, first groove; 240, second base; 241, first end face; 242, second end face; 250, buckle; 300, pile sleeve; 400, bearing platform; 410, force transmission reinforcement. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly mounted on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0048] Prefabricated building structure 100 refers to various types of piles that are prefabricated and transported to the construction site for use. Prefabricated building structure 100 can be produced centrally in a factory, or can be prefabricated around the site. The axial length and radial circumference of the prefabricated building structure 100 can be made as needed, and its reinforcement ratio can be designed according to the stress during transportation, hoisting and pressing into the pile, which is highly flexible. In addition, the prefabricated building structure 100 is a partial soil-squeezing pile, which not only effectively saves the cross-sectional area of ​​the foundation and saves construction costs, but also helps to release the stress of the soil after destruction, reduces the phenomenon of pile tilting due to soil squeezing, and is beneficial to the construction of other nearby piles.

[0049] See also Figure 1 and Figure 2 , Figure 1 A schematic diagram of a prefabricated building structure in a first embodiment of the present invention;

[0050] Figure 2 for Figure 1 Schematic diagram of the structure of the embedded pipe shown.

[0051] The present invention provides a prefabricated building structure 100, which is applied to a foundation building in the field of building technology. In this embodiment, the prefabricated building structure 100 is used to prefabricate vertical load-bearing piles. It can be understood that in other embodiments, the prefabricated building structure 100 can also be applied to other engineering fields, such as prefabricated buildings, etc., and can also be used for horizontal load-bearing piles or composite load-bearing piles, etc.

[0052] Existing prefabricated building structures are mostly solid structures or hollow structures, but solid structures have problems such as being too heavy to transport and wasting raw materials. On the other hand, although hollow structures can save raw materials, their seismic mechanical properties and durability cannot be guaranteed.

[0053] The present invention provides a prefabricated building structure 100, comprising a hollow part 10, a solid part 20 and a pre-buried pipe 80. The interior of the hollow part 10 is hollow and surrounded by a core groove 11. The hollow part 10 is connected to the solid part 20. The pre-buried pipe 80 is arranged in the solid part 20, and one end of the pre-buried pipe 80 extends to the end of the solid part 20 away from the hollow part 10.

[0054] The pile body in the prefabricated building structure 100 provided by the present invention includes a solid part 20 and a hollow part 10, which reduces the amount of raw materials used, reduces weight, and saves production costs; at the same time, when the prefabricated building structure 100 is buried underground, it is only necessary to locate the solid part 20 in the depth area below the foundation where the frequency of seismic waves occurs the highest (generally 2 meters to 15 meters below the foundation), so as to ensure the seismic resistance of the prefabricated building structure 100 and the reliability of the prefabricated building structure 100 when in service. In addition, the provision of the embedded pipe 80 improves the strength of the solid part 20, so that the longitudinal force bearing capacity and shear resistance capacity increase instead of decrease relative to the solid pile, thereby improving the tensile resistance, compressive resistance, seismic resistance and durability of the prefabricated building structure 100. One end of the embedded pipe 80 extends to the end of the solid part 20. On the one hand, the load-bearing capacity of the end of the solid part 20 is greatly improved to prevent the concrete at the end of the solid part 20 from falling off after being stressed; on the other hand, it is convenient to connect with external steel bars, especially when the prefabricated building structure 100 is connected to the base 400, the reinforcement ratio in the base 400 can be increased, thereby increasing the strength of the base 400.

[0055] Preferably, the hollow portion 10 and the solid portion 20 are made of concrete material, and the shapes of the outer peripheral walls of the hollow portion 10 and the solid portion 20 are substantially the same.

[0056] In one embodiment of the present invention, the interior of the embedded pipe 80 is hollow, one end of the embedded pipe 80 extends to the end of the solid portion 20 away from the hollow portion 10 , and the other end is connected to the core groove 11 .

[0057] With such arrangement, after the embedded pipe 80 is connected with the core groove 11, it can play a role in drainage. When the prefabricated pile is driven or pressed into the ground, the pore water with a rapid increase in pressure in the foundation soil can smoothly penetrate into the core groove 11 and the embedded pipe 80, and under the action of the pressure difference, the pore water will gush out, and the pore water in the foundation around the pile body can gradually penetrate into the cavities of the pile body. When the water level rises to near the ground, drainage will be carried out. After drainage, the foundation soil around the pile body will tightly hold the pile body, thereby improving the bonding force between the prefabricated building structure 100 and the foundation soil. In addition, the force transmission reinforcement body 410 in the cap 400 can be connected to the embedded pipe 80 by welding, gluing, threaded connection, etc., so as to increase the reinforcement ratio in the cap 400.

[0058] In one embodiment of the present invention, the embedded pipe 80 is arranged along the axial direction of the prefabricated building structure 100 .

[0059] Such an arrangement can not only better bear the vertical force, but also discharge the groundwater through a shorter path, and is simple to process and form and easy to produce.

[0060] See also Figure 2 , Figure 2 for Figure 1Schematic diagram of the structure of the embedded pipe shown.

[0061] In this embodiment, the embedded pipe 80 is a hollow column. Preferably, in this embodiment, the embedded pipe 80 is a cylindrical shape. It can be understood that the embedded pipe 80 can also be a square column or a column with a polygonal cross section, which are not listed here one by one.

[0062] In other embodiments, the embedded pipe 80 is a hollow pipe with an internal thread at the end, which is convenient for threaded connection with the force transmission reinforcement body 410.

[0063] It is understood that in other embodiments, the embedded pipe 80 may also be other structures. Figures 3 to 6 As shown, Figure 3 This is a schematic diagram of the structure of the embedded pipe in the second embodiment of the present invention; Figure 4 This is a schematic structural diagram of a pre-buried pipe 80 in a third embodiment of the present invention; Figure 5 This is a schematic structural diagram of a pre-buried pipe 80 in a fourth embodiment of the present invention; Figure 6 Schematic diagram of the embedded pipe 80 in the fifth embodiment of the present invention.

[0064] Figure 3 The embedded pipe 80 shown is a columnar structure with a hollow end. In this embodiment, only one end of the embedded pipe 80 is hollow. After the external steel bar is inserted into the hollow part, it is fixedly connected to the embedded pipe 80 by welding, gluing or threaded connection. The other parts of the embedded pipe 80 are all solid structures, which can withstand greater forces and increase the strength of the prefabricated building structure 100. Preferably, in this embodiment, the embedded pipe 80 is cylindrical. It can be understood that the embedded pipe 80 can also be a square column or a column with a polygonal cross section, which are not listed here one by one.

[0065] Figure 4 The embedded pipe 80 shown is a structure with a hollow end and an internal thread, and the external steel bar (preferably a threaded steel bar) can be connected to the embedded pipe 80 by a threaded connection. At this time, the embedded pipe can be a hollow structure, or only the end can be a hollow structure, as long as it can be threadedly connected to the external steel bar. Preferably, in this embodiment, the outer peripheral wall of the embedded pipe 80 is cylindrical. It can be understood that the outer peripheral wall of the embedded pipe 80 can also be a square column or a column with a polygonal cross section, and the inner peripheral wall is cylindrical.

[0066] Figure 5The embedded pipe 80 shown is a corrugated pipe, and the corrugated structure in the corrugated pipe can make it better combined with the concrete structure, avoiding the displacement of the embedded pipe 80 during service. It can be understood that the present invention does not limit the shape of the inside of the corrugated pipe; the corrugated pipe can be hollow, solid, or only hollow at the end; the hollow part inside the corrugated pipe can be cylindrical, polygonal, or corrugated; as long as the outer wall is a corrugated structure, it can be better combined with concrete.

[0067] Figure 6 The embedded pipe 80 shown is a corrugated pipe with a thread on the top, and the inner wall of the threaded part is cylindrical. Figure 7 The structures of the embedded pipes 80 shown are substantially the same and will not be described in detail here.

[0068] Please also read Figures 7 to 9 , Figure 7 is a schematic diagram of a prefabricated building structure in a sixth embodiment of the present invention; Figure 8 for Figure 7 A cross-sectional view of the prefabricated building structure shown at section AA; Fig. 9 for Figure 7 A cross-sectional view of the prefabricated building structure shown at section BB.

[0069] In one embodiment of the present invention, the prefabricated building structure 100 further includes a first cage 30, which is disposed in the solid portion 20 and the hollow portion 10. The first cage 30 includes a first axial rib 31 and a first radial rib 32, and the first axial rib 31 is disposed along the axial direction of the prefabricated building structure 100; a plurality of first axial ribs 31 form a frame of the first cage 30, and the first radial ribs 32 spirally surround the frame of the first cage 30, and the first radial ribs 32 are fixedly connected to the first axial ribs 31.

[0070] With such arrangement, the first cage body 30 has a high load-bearing strength and is easy to process. It is only necessary to wind the first radial reinforcement 32 onto the frame formed by the first axial reinforcement 31 while the plurality of first axial reinforcements 31 are axially transported, thereby saving work hours. Moreover, the number of spiral turns and the densified length of the first radial reinforcement 32 can be increased at locations with greater stress as needed, such as increasing the number of spiral turns and the densified length of the first radial reinforcement 32 at both ends of the first cage body 30, thereby preventing the prefabricated building structure 100 from being damaged due to excessive load when buried underground.

[0071] It is understandable that the outer edge of the cross section of the first cage body 30 is in the shape of a circle or a polygon, and the polygon is a triangle, a square / rectangle, a pentagon, a hexagon, etc., which are not listed here one by one.

[0072] With such arrangement, the first cage body 30 can be designed with different shapes according to the actual use of the prefabricated building structure 100 and the corresponding stress conditions, so as to achieve different load-bearing effects.

[0073] It is understandable that in other embodiments, the first radial ribs 32 and the first axial ribs 31 , and the second axial ribs 41 and the second radial ribs 42 may also be fixed by means of snap connection, bundling, etc., which are not listed here one by one.

[0074] In one embodiment, the first axial reinforcement 31 is made of at least one of a prestressed concrete steel bar (PC steel bar), a stainless steel bar, a hot-rolled steel bar, a medium-strength prestressed steel wire, a stress-relieving steel wire, a steel strand, and a prestressed threaded steel bar; and / or,

[0075] The first radial reinforcement 32 is made of at least one of prestressed concrete steel bars (PC steel bars), stainless steel bars, hot-rolled steel bars, medium-strength prestressed steel wires, stress-relieved steel wires, steel strands, prestressed threaded steel bars, hot-rolled low-carbon steel round bars, and cold-drawn low-carbon steel wires for concrete products.

[0076] In one embodiment of the present invention, the first cage 30 is made of prestressed steel bars.

[0077] In this way, before the prefabricated building structure 100 is used, the prestress is applied to the steel bars by the pre-tensioning method or the post-tensioning method to form prestressed steel bars. When the prefabricated building structure 100 is subjected to the tensile force generated by the external load, the existing prestress in the concrete is first offset, and then the prestressed steel bars are subjected to force. Finally, as the load increases, the concrete is subjected to tension and cracks appear, thereby delaying the appearance and development of cracks in the prefabricated building structure 100, and increasing the loads that the prefabricated building structure 100 can withstand, such as soil compression, groundwater scouring, earthquake loads, and self-gravity loads. Threaded steel bars are steel bars with ribs on the surface. Due to the effect of the ribs, they have a greater bonding ability with concrete, and can therefore better withstand the effects of external forces. The first cage body 30 is composed of prestressed steel bars, which can make both the solid part 20 and the hollow part 10 have a higher vertical force bearing capacity, forming an overall force bearing foundation.

[0078] In one embodiment of the present invention, the prefabricated building structure 100 further includes a second cage 40, which is disposed in the solid portion 20. The second cage 40 includes a second axial rib 41 and a second radial rib 42, and the second axial rib 41 is disposed along the axial direction of the prefabricated building structure 100; a plurality of second axial ribs 41 form a frame of the second cage 40, and the second radial ribs 42 spirally surround the frame of the second cage 40, and the second radial ribs 42 are fixedly connected to the second axial ribs 41.

[0079] In this way, the second cage 40 increases the local reinforcement ratio of the solid part 20, so that the longitudinal force bearing capacity and shear resistance capacity are increased instead of decreased compared with the solid pile, thereby improving the tensile resistance, compressive resistance, seismic resistance and durability of the prefabricated building structure 100.

[0080] In one embodiment, the prefabricated building structure 100 is a partially hollow square pile. In this case, the prefabricated building structure 100 is roughly in the shape of a cuboid, and the hollow part 10 and the solid part 20 are also roughly in the shape of a cuboid, made of concrete, and a core groove 11 with a cylindrical wall is opened in the middle of the hollow part 10; the second cage 40 and the first cage 30 are both roughly in the shape of a cuboid, the second cage 40 is arranged in the solid part 20, the first cage 30 is arranged in the hollow part 10 and the solid part 20, and the first cage 30 is sleeved with the second cage 40.

[0081] It is understandable that in other embodiments, the prefabricated building structure 100 may also be roughly cylindrical or polygonal (such as triangle, pentagon, hexagon, octagon, etc.) columnar; the surrounding wall of the core groove 11 may also be polygonal (such as triangle, square, rectangle, pentagon, hexagon, octagon, etc.) columnar.

[0082] In one embodiment of the present invention, the second cage body 40 extends to an end of the solid portion 20 relatively far away from the hollow portion 10 .

[0083] With such arrangement, the end of the solid portion 20 relatively far from the hollow portion 10 can also be supported by the second cage body 40, thereby preventing the end of the solid portion 20 from deforming, concrete falling off, and other defects during use or service, and also enabling the end of the solid portion 20 to withstand greater pressure when the prefabricated building structure 100 is buried underground, so that the prefabricated building structure 100 can be quickly buried underground.

[0084] In other embodiments, the second cage body 40 may also be located inside the solid portion 20 to prevent the second cage body 40 from being exposed to the air and corroded.

[0085] It is understandable that the outer edge of the cross section of the second cage body 40 is in the shape of a circle or a polygon, and the polygon is a triangle, a square / rectangle, a pentagon, a hexagon, etc., which are not listed here one by one.

[0086] With such arrangement, the second cage body 40 can be designed with different shapes according to the actual use of the prefabricated building structure 100 and the corresponding stress conditions, so as to achieve different load-bearing effects.

[0087] In one embodiment of the present invention, the second cage body 40 is made of prestressed steel bars or threaded steel bars.

[0088] With such configuration, the second cage body 40 can select prestressed steel bars or threaded steel bars as needed. The prestressed steel bars can further improve the vertical force bearing capacity of the prefabricated building structure 100 , and the threaded steel bars can reduce the manufacturing cost of the prefabricated building structure 100 .

[0089] In one embodiment, the second axial reinforcement 41 is made of at least one of threaded steel, prestressed concrete steel bar (PC steel bar), stainless steel bar, hot-rolled steel bar, medium-strength prestressed steel wire, stress-relieved steel wire, steel strand, and prestressed threaded steel bar; and / or,

[0090] The second radial reinforcement 42 is made of at least one of threaded steel, steel rod for prestressed concrete (PC steel rod), stainless steel rod, hot-rolled steel rod, medium-strength prestressed steel wire, stress-relieved steel wire, steel strand, prestressed threaded steel bar, hot-rolled low-carbon steel round bar, and cold-drawn low-carbon steel wire for concrete products.

[0091] It is understandable that the first cage body 30 and the second cage body 40 can be provided at the same time, or one of them can be provided selectively.

[0092] In one embodiment of the present invention, there are multiple embedded pipes 80 , and the multiple embedded pipes 80 are respectively distributed between the first cage body 30 and the second cage body 40 and / or inside the second cage body 40 .

[0093] With such arrangement, the prefabricated building structure 100 has steel structures at various locations, and the steel structures cooperate with the concrete structures to greatly enhance the strength of the prefabricated building structure 100 .

[0094] In one embodiment of the present invention, the prefabricated building structure 100 further includes a mounting plate 50 , which is disposed on a wall surface of the core groove 11 close to one end of the solid portion 20 , and the mounting plate 50 is connected to the embedded pipe 80 .

[0095] With such arrangement, the force borne by the embedded pipe 80 can be transmitted to the mounting plate 50 and dispersed into the prefabricated building structure 100; and the mounting plate 50 itself can play a supporting role inside the prefabricated building structure 100, preventing the prefabricated building structure 100 from deforming during service, and preventing the concrete from falling off on the wall surface of the core groove 11 relatively close to the solid part 20.

[0096] In one embodiment of the present invention, the interior of the embedded pipe 80 is hollow, a drainage hole 51 is opened on the mounting plate 50 , and the embedded pipe 80 is connected to the core groove 11 through the drainage hole 51 .

[0097] Such an arrangement can improve the strength of the prefabricated building structure 100 through the installation plate 50 , while not hindering the drainage function of the prefabricated building structure 100 .

[0098] It can be understood that the plurality of embedded pipes 80 may all or partially be connected to the mounting plate 50 ; may all or partially be connected to the core groove 11 .

[0099] In one embodiment of the present invention, the mounting plate 50 is connected to the first cage body 30 .

[0100] With such arrangement, during the production process of the prefabricated building structure 100 , the relative position between the mounting plate 50 and the first cage body 30 is fixed, which is beneficial to improving the load-bearing capacity and integrity of the prefabricated building structure 100 .

[0101] In one embodiment of the present invention, the second cage body 40 extends to the mounting plate 50 and is connected to the mounting plate 50 .

[0102] In this way, the mounting plate 50 can not only fix the second cage body 40 and prevent the second cage body 40 from deformation and dislocation during service, but also prevent the concrete on the side wall of the core groove 11 relatively close to the solid part 20 from falling off, avoid the second cage body 40 from being exposed to the air, prevent the second cage body 40 from being corroded, and affect the service strength of the second cage body 40.

[0103] Specifically, the mounting plate 50 is a steel plate, and the second cage body 40 and the mounting plate 50 are welded.

[0104] In one embodiment of the present invention, the prefabricated building structure 100 further comprises a corner protector 60 , which is disposed on an end of the solid portion 20 relatively far from the hollow portion 10 , and / or the corner protector 60 is disposed on an end of the hollow portion 10 relatively far from the solid portion 20 .

[0105] Such an arrangement can prevent the concrete on the end of the prefabricated building structure 100 from falling off during the process of being buried underground or in service, causing the second cage 40 or the first cage 30 to be exposed and corroded, thereby reducing the strength of the prefabricated building structure 100.

[0106] Specifically, the corner protector 60 is made of carbon structural steel, preferably Q235 steel; the thickness of the corner protector 60 is 0.5 mm to 12 mm, and the height of the corner protector 60 along the axial direction of the prefabricated building structure 100 is 60 mm to 500 mm. Preferably, the thickness of the corner protector 60 is 1 mm to 8 mm, and the height of the corner protector 60 along the axial direction of the prefabricated building structure 100 is 80 mm to 200 mm.

[0107] Please also read Fig.10 , Fig.10 for Figure 1 A schematic structural diagram of the embedded connecting member 70 is shown.

[0108] In one embodiment of the present invention, a pre-embedded connector 70 is disposed on the first cage body 30 and / or the second cage body 40 . The pre-embedded connector 70 is located at an end of the solid portion 20 relatively far from the hollow portion 10 .

[0109] With such a configuration, during construction, the prefabricated building structure 100 usually needs to be combined with another prefabricated building structure to extend the length of the prefabricated building structure 100, or the cap 400 is cast after the steel bars are connected to the top of the prefabricated building structure 100 to bear the superstructure. The embedded connector 70 is arranged on the second cage body 40 to increase the bonding rate between the two prefabricated building structures 100; or the reinforcement ratio of the cap 400 is increased, the connection method between the prefabricated building structure 100 and the cap 400 is simplified, the force transmission link in the force-bearing process is reduced, the overall vertical force-bearing capacity of the prefabricated building structure 100 is improved, and the mechanical properties of the connection between the prefabricated building structure 100 and the cap are guaranteed.

[0110] In one embodiment, the embedded connector 70 has an internal thread, the second axial rib 41 has an external thread, and the second axial rib 41 is connected to the embedded connector 70 through threads.

[0111] In one embodiment, the embedded connector 70 has a contraction opening 71 for connecting to the second axial rib 41 or the first axial rib 31; the end of the second axial rib 41 or the first axial rib 31 connected to the embedded connector 70 has a swaging head 311, and the contraction opening 71 is used to limit the swaging head 311.

[0112] In one embodiment of the present invention, the embedded connector 70 is further provided with an annular protrusion 72 on the outer peripheral wall relatively close to the end of the prefabricated building structure 100. Preferably, the outer diameter of the annular protrusion 72 gradually decreases from the end to the middle of the embedded connector 70; and the outer peripheral wall of the annular protrusion 72 is an arc surface.

[0113] With such arrangement, the annular protrusion 72 can even out the prestress, so that the second cage body 40 and / or the first cage body 30 can withstand a larger prestress during pre-stretching, thereby preventing the embedded connector 70 from being damaged.

[0114] It should be noted that the embedded connectors 70 in the two prefabricated building structures 100 can be of the same model or of different models, which can be selected according to the working conditions.

[0115] In one embodiment of the present invention, the embedded connector 70 is formed together with the prefabricated building structure 100. It is understandable that in other embodiments, the embedded connector 70 can also be connected to the second cage 40 or the first cage 30 at a later stage. The operation steps are: first, the concrete at the end of the prefabricated building structure 100 is chiseled to expose the first axial steel bar or the second axial steel bar, and then the embedded connector 70 is connected to the end of the first axial steel bar or the second axial steel bar, and then the end of the first axial steel bar or the second axial steel bar is formed by hot working. Head 311 is completed.

[0116] The prefabricated building structure 100 can be used alone or in combination with multiple prefabricated building structures 100. For example, two, three, four or even more prefabricated building structures 100 can be connected and used according to the working conditions.

[0117] Please also read Fig.11 , Fig.11 The diagram is a schematic diagram of the use of two prefabricated building structures 100 being butt-jointed.

[0118] In one embodiment, quick connectors are provided on the first cage bodies 30 of the two prefabricated building structures 100 , and the two quick connectors can be connected by a quick docking assembly 200 to extend the length of the prefabricated building structure 100 .

[0119] In one embodiment, the quick docking assembly 200 is made of black metal. Preferably, the quick docking assembly 200 is made of carbon steel or alloy steel. Specifically, the quick docking assembly 200 is made of carbon steel, chrome steel, chrome vanadium steel, chrome nickel steel, chrome molybdenum steel, chrome nickel molybdenum steel, chrome manganese silicon steel, ultra-high strength steel or stainless steel. It is understood that in other embodiments, the quick docking assembly 200 can also be made of other materials.

[0120] Please also read Fig.12 , Fig.12 FIG. 2 is a schematic structural diagram of a quick docking assembly 200 in one embodiment.

[0121] The quick docking assembly 200 in the first embodiment includes a first plug-in platform 210 and a first base 220. The first plug-in platform 210 includes a first fixing portion 211, a first plug-in portion 212, and a first extension portion 213 located between the first fixing portion 211 and the first plug-in portion 212. The first base 220 includes a second fixing portion 221 and a plurality of fins 222 connected to the second fixing portion 221. The first plug-in platform 210 is connected to one of the quick connectors of the prefabricated building structure 100 through the first fixing portion 211. The first base 220 is connected to the second fixing portion 221 through the second fixing portion 211. The part 221 is connected to a quick connector of another prefabricated building structure 100; the first plug-in part 212 is protruded on the first extension part 213 and a first step surface 214 is formed between the first plug-in part 212 and the first extension part 213; a plurality of fins 222 are arranged around each other; the first inserting platform 210 can pass through the opening formed by the plurality of fins 222 through the elastic expansion of the fins 222, the fins 222 can elastically contract and surround the first extension part 213, and the end faces of the fins 222 are arranged opposite to the first step surface 214 of the first inserting platform 210.

[0122] In this embodiment, the use process of the quick docking assembly 200 is as follows: the first plug-in platform 210 is connected to the embedded connector 70 in one of the prefabricated building structures 100 through the first fixing portion 211, and the first base 220 is connected to the embedded connector 70 in another prefabricated building structure 100 through the second fixing portion 221; the first plug-in portion 212 and the first extension portion 213 of the first plug-in platform 210 are extended into the inner wall of the first base 220 and moved along the insertion direction α, and the first plug-in portion 212 and the first extension portion 213 of the first plug-in platform 210 are extended into the inner wall of the first base 220 and moved along the insertion direction α. The plug-in portion 212 applies pressure to the fin 222, causing the fin 222 to elastically expand until the first plug-in portion 212 passes through the fin 222; at the moment when the first plug-in portion 212 passes through the fin 222, the fin 222 elastically contracts and surrounds the first extension portion 213. When a force in the opposite direction of the insertion direction α is applied to the first socket 210, the end of the fin 222 will abut against the first step surface 214 between the first plug-in portion 212 and the first extension portion 213 and limit the first socket 210.

[0123] The quick docking assembly 200 provided in this embodiment is easy to install with the embedded connector 70. After the first plug-in portion 212 of the first plug-in platform 210 is inserted into the first base 220, the fin 222 will elastically shrink and surround the extension of the first base 220. The end of the fin 222 abuts against the step surface of the first plug-in platform 210, and the abutting surface between the end of the fin 222 and the first step surface 214 of the first plug-in platform 210 is approximately annular, with a large abutting area, which can ensure the joint strength between the two prefabricated building structures 100, especially greatly improving the vertical force performance; the fin 222 can not only surround the first extension portion 213 of the plug-in platform, but also limit the first extension portion 213 to prevent the first extension portion 213 from shaking in the radial direction. In addition, the quick docking assembly 200 provided in this embodiment has a simple processing technology, low cost, and a wide range of applicable scenarios.

[0124] Please also read Fig.13 , Fig.13 FIG. 2 is a schematic structural diagram of a quick docking assembly 200 in another embodiment.

[0125] The quick docking assembly 200 in the second embodiment includes a second plug-in platform 230, a second base 240 and a buckle 250. The second plug-in platform 230 includes a third fixing portion 231 and a second plug-in portion 232 that are relatively arranged, and a first groove 233 is provided on the second plug-in portion 232; the second base 240 includes a first end face 241 and a second end face 242 that are relatively arranged; the buckle 250 has an opening (not shown) and can be elastically contracted, the buckle 250 is sleeved on the second plug-in platform 230 and accommodated in the first groove 233; the buckle 250 can be inserted into the second base 240 along the insertion direction together with the second plug-in portion 232 of the second plug-in platform 230, and the buckle 250 can resist the second end face 242 of the second base 240 through elastic expansion, and limit the reverse movement of the second plug-in platform 230 along the insertion direction.

[0126] After the quick docking assembly 200 provided in this embodiment inserts the second plug-in portion 232 of the second plug-in platform 230 into the second base 240, the buckle 250 can pop out of the first groove 233 through the elastic expansion part and abut against the second end face 242 of the second base 240. The abutting surface between the buckle 250 and the second end face 242 is approximately annular, and the abutting area is large, which can ensure the bonding strength between the two embedded connectors 70, especially greatly improving the vertical force performance. In addition, the quick docking assembly 200 provided in this embodiment has a simple processing technology, low cost, and a wide range of applicable scenarios.

[0127] It can be understood that the insertion direction α can be but is not limited to the above direction, and even if there is a partial angle deviation, it should be included in the protection scope of the present invention.

[0128] In one embodiment, after two prefabricated building structures 100 are butt-jointed, a pile collar 300 is disposed on the peripheral wall at the junction of the two prefabricated building structures 100 , and the pile collar 300 is used to fasten the butt joint of the two prefabricated building structures 100 to prevent the two prefabricated building structures 100 from being misaligned during use or service.

[0129] It is understandable that the two prefabricated building structures 100 may be the same prefabricated piles or different prefabricated piles; may be solid piles, hollow piles, or partially hollow piles; may be square piles or pipe piles.

[0130] In one embodiment, a glue coating layer (not shown) is provided between the two prefabricated building structures 100 . The glue layer fills the gap between the two prefabricated building structures 100 and the gap between the prefabricated building structure 100 and the quick docking assembly 200, preventing water or oxygen from entering and corroding the first cage 30, the second cage 40 and the quick docking assembly 200, thereby increasing its anti-corrosion property; after the glue layer is cured, it can also prevent the two prefabricated building structures 100 from shaking or rotating, and can also prevent the quick docking assembly and the prefabricated building structure 100 from shaking or rotating, thereby increasing the stability of the prefabricated building structure 100; and the cured glue layer can withstand the force, making the combination between the two prefabricated building structures 100 tighter and firmer, and having better force bearing performance; in addition, after the glue layer is cured, it can also play a role in uniform force bearing, even if there is a slightly uneven force between the two prefabricated building structures 100 or between the prefabricated building structure 100 and the quick docking assembly 200, the cured glue layer can also balance the force, thereby improving the vertical force bearing capacity of the prefabricated building structure 100 and extending the service life of the prefabricated building structure 100.

[0131] In one embodiment of the present invention, the adhesive coating layer is a paste adhesive.

[0132] With such arrangement, the paste-like glue is easy to adhere to the end surface of the prefabricated building structure 100 and is not easy to flow, and the paste-like glue can also be squeezed between the prefabricated building structure 100 and the quick docking assembly 200 during docking, so that the quick docking assembly 200 and the prefabricated building structure 100 are tightly connected, and the entire prefabricated building structure 100 has better stability in use.

[0133] In one embodiment of the present invention, the adhesive is a two-liquid mixed hardening adhesive (AB adhesive).

[0134] With this arrangement, AB glue has the advantages of good storage and transportation performance, more flexible use, high bonding strength, and good vertical force bearing performance after curing.

[0135] In one embodiment of the present invention, the adhesive is epoxy resin.

[0136] With such arrangement, the epoxy resin has strong adhesion, and its chemical structure contains aliphatic hydroxyl, ether group and extremely active epoxy group. Both hydroxyl and ether group have high polarity, which make the epoxy resin have strong adhesion, and they can firmly bond concrete, stone and various metal materials; epoxy resin AB glue can be prepared into glues with different viscosities, and the curing degree of AB glue can be adjusted by room temperature curing, heating curing and other methods, and its curing time can be controlled within a few minutes to a few hours; and, the epoxy resin AB glue has good performance. After curing, the epoxy resin glue has good performance, high mechanical strength, yellowing resistance, medium resistance, long aging resistance, electrical insulation, waterproof and moisture-proof performance, and small volume shrinkage; the epoxy resin AB glue itself is non-toxic, no three wastes are discharged during production, and it will not cause harm to the environment when used, which meets environmental protection requirements; in addition, the epoxy resin AB glue is widely available, cheap and low in cost.

[0137] Please also read Fig.14 , Fig.14 It is a structural schematic diagram of a prefabricated building structure 100 and a foundation 400.

[0138] In one embodiment, the prefabricated building structure 100 is coupled to a cap 400 .

[0139] In this embodiment, the solid part 20 in the prefabricated building structure 100 is connected to the pedestal 400. The second cage 40 and the first cage 30 are both provided with embedded connectors 70 at the ends relatively far away from the hollow part 10. The embedded connectors 70 are fixedly connected to the force transmission reinforcement 410. A plurality of force transmission reinforcements 410 form a force-bearing frame in the pedestal 400. Then, concrete is poured into the mold, and the pedestal 400 is formed after the concrete is dried and formed. Since the second cage 40 and the first cage 30 are both provided with embedded connectors 70 in this embodiment, the reinforcement ratio in the pedestal 400 can be greatly improved, which can not only improve the bearing capacity of the pedestal 400, reduce the force transmission links, and be safer and more reliable; it can also better transmit the force borne by the pedestal 400 to the foundation below.

[0140] It is understandable that in other embodiments, if the support platform 400 does not require a very high load-bearing capacity, only the second cage body 40 or the first cage body 30 may be provided with an embedded connector 70 at the end relatively far away from the hollow portion 10, and the embedded connector 70 is fixedly connected to the force transmission reinforcement body 410.

[0141] Please also read Fig. 9 , Fig. 9 for Figure 8 A partial enlarged view of section C is shown.

[0142] In one embodiment, the end of the embedded pipe 80 is connected to the force transmission reinforcement body 410 .

[0143] In one embodiment, the embedded connector 70 is provided with a through thread, one end of the embedded connector 70 is threadedly connected to the first axial reinforcement body 31 or the second axial reinforcement body 41 , and the other end is threadedly connected to the force transmission reinforcement body 410 .

[0144] Preferably, the force transmission reinforcement 410 is threaded steel bar.

[0145] It is understandable that in other embodiments, the embedded connector 70 may also be other types of steel bars, and the embedded connector 70 and the first axial reinforcement 31, the second axial reinforcement 41 or the force transmission reinforcement 410 may also be fixedly connected by welding, clamping, etc. Preferably, the embedded connector 70 is provided with an internal thread, and the force transmission reinforcement 410 is provided with an external thread, and the two are connected by threaded matching, which is simple to connect and saves time and cost during construction.

[0146] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0147] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection claimed by the present invention.

Claims

1. A prefabricated building structure (100), characterized in that: It comprises a hollow part (10), a solid part (20) and a pre-buried pipe (80), wherein the interior of the hollow part (10) is hollow and surrounded by a core groove (11), and the hollow part (10) is connected to the solid part (20); The embedded pipe (80) is arranged in the solid part (20), and one end of the embedded pipe (80) extends to the end of the solid part (20) away from the hollow part (10); The end of the embedded pipe (80) is hollow and is used to connect external steel bars; The end of the embedded pipe (80) is provided with an internal thread for connecting to external steel bars; The interior of the embedded pipe (80) is hollow, one end of the embedded pipe (80) extends to the end of the solid part (20) away from the hollow part (10), and the other end is connected to the core groove (11); The embedded pipe (80) is arranged along the axial direction of the prefabricated building structure (100); and / or, The diameter of the embedded pipe (80) is 10 mm to 100 mm.

2. The prefabricated building structure (100) according to claim 1, characterized in that The prefabricated building structure (100) further comprises a first cage (30), wherein the first cage (30) is arranged in the solid part (20) and the hollow part (10), wherein the first cage (30) comprises a first axial rib (31) and a first radial rib (32), wherein the first axial rib (31) is arranged along the axial direction of the prefabricated building structure (100); a plurality of the first axial ribs (31) form a frame of the first cage (30), and the first radial ribs (32) spirally surround the frame of the first cage (30), and the first radial ribs (32) are fixedly connected to the first axial ribs (31).

3. The prefabricated building structure (100) according to claim 2, characterized in that The prefabricated building structure (100) further comprises a second cage (40), wherein the second cage (40) is arranged in the solid portion (20), the second cage (40) comprises a second axial rib (41) and a second radial rib (42), wherein the second axial rib (41) is arranged along the axial direction of the prefabricated building structure (100); a plurality of the second axial ribs (41) form a frame of the second cage (40), the second radial ribs (42) spirally surround the frame of the second cage (40), and the second radial ribs (42) are fixedly connected to the second axial ribs (41).

4. The prefabricated building structure (100) according to claim 3, characterized in that There are a plurality of pre-buried pipes (80), and the plurality of pre-buried pipes (80) are respectively distributed between the first cage body (30) and the second cage body (40) and / or inside the second cage body (40).

5. The prefabricated building structure (100) according to claim 2, characterized in that The prefabricated building structure (100) further comprises a mounting plate (50), wherein the mounting plate (50) is arranged on a wall surface of the core groove (11) close to one end of the solid portion (20), and the mounting plate (50) is connected to the embedded pipe (80).

6. The prefabricated building structure (100) according to claim 5, characterized in that The interior of the embedded pipe (80) is hollow, a drainage hole (51) is provided on the mounting plate (50), and the embedded pipe (80) is connected to the core groove (11) through the drainage hole (51); and / or, The mounting plate (50) is connected to the first cage body (30).

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