CN111335300A

CN111335300A - Prefabricated building structure

Info

Publication number: CN111335300A
Application number: CN202010221856.7A
Authority: CN
Inventors: 许顺良
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2020-06-26

Abstract

The invention relates to a prefabricated building structure, which comprises a pile body and a pile tip; the pile comprises a pile body, a first cage body and a pre-buried pipe, wherein the first cage body and the pre-buried pipe are arranged in the pile body; the pile point is arranged at the end part of the pile body, a reinforcing rib is arranged in the pile point, and the reinforcing rib extends into the pile body. Compared with the existing structure, the prefabricated building structure reduces the consumption of raw materials, lightens the weight and saves the manufacturing cost; the bearing capacity is improved and the service life is prolonged; the arrangement of the first cage body can further improve the bearing capacity of the prefabricated building structure, and the reliability of the prefabricated building structure in service is guaranteed. In addition, the pile tip can increase the capability of the prefabricated building structure penetrating through a soil layer during sinking construction, plays a role in guiding and reduces the probability of breakage of the prefabricated building structure; the reinforcing rib in the pile tip extends into the pile body, so that the pile body is better combined with the pile tip, and the separation of the pile body and the pile tip caused by stress in the process of using the prefabricated building structure is avoided.

Description

Prefabricated building structure

Technical Field

The invention relates to the technical field of buildings, in particular to a prefabricated building structure.

Background

In the field of building technology, in order to facilitate production and processing and reduce construction time, a prefabricated building structure is generally manufactured in a factory and then transported to a construction site for use. Most of the existing prefabricated building structures are solid structures or hollow structures, but the solid structures have the problems of overlarge weight, difficulty in transportation, waste of raw materials and the like; on the other hand, although the hollow structure can save raw materials, the anti-seismic mechanical property and the durability of the hollow structure cannot be guaranteed; in addition, the pile body and the pile tip of the prefabricated building structure are not firmly combined, the pile body and the pile tip are not integrated enough, and the prefabricated building structure is subjected to pressure and shearing force in the sinking construction process, so that the pile body and the pile tip are separated or misplaced easily. Therefore, there is a need for an improved prefabricated building structure, which can reduce the weight, save raw materials, ensure the anti-seismic mechanical property and durability, and improve the integration of the pile body and the pile tip.

Disclosure of Invention

In view of the above, there is a need for an improved prefabricated building structure.

The invention provides a prefabricated building structure, which comprises a pile body and a pile tip; the pile comprises a pile body, a first cage body and a pre-buried pipe, wherein the first cage body and the pre-buried pipe are arranged in the pile body; the pile point is arranged at the end part of the pile body, a reinforcing rib is arranged in the pile point, and the reinforcing rib extends into the pile body.

The invention provides a prefabricated building structure, wherein a pre-buried pipe is arranged, and the pre-buried pipe divides the prefabricated building structure into a hollow part and a solid part; compared with the existing solid pile structure, the prefabricated building structure reduces the consumption of raw materials, lightens the weight and saves the manufacturing cost; compared with the existing hollow pile structure, the bearing capacity and the service life of the prefabricated building structure are improved, so that the application range of the prefabricated building structure is wider; the bearing capacity of the prefabricated building structure can be further improved by arranging the first cage body. When the prefabricated building structure is buried underground, the central part is located in a depth area (generally 2-15 meters below the foundation) with the highest seismic wave frequency below the foundation, so that the seismic capacity of the prefabricated building structure can be ensured, and the reliability of the prefabricated building structure in service is ensured. In addition, when the prefabricated building structure is buried underground, because both ends of the prefabricated building structure are solid parts, compared with hollow piles, the prefabricated building structure 100 is beneficial to penetration of a geological soil layer during construction, the construction speed is higher, the damage rate is lower, the project construction period is saved, and the engineering quality is guaranteed. In addition, the pile tip can increase the capability of the prefabricated building structure penetrating through a soil layer during sinking construction, can play a guiding role, and can also reduce the probability of breakage of the prefabricated building structure; the reinforcing rib in the pile tip extends into the pile body, so that the pile body and the pile tip can be well combined, and the separation of the pile body and the pile tip caused by stress in the process of using the prefabricated building structure is avoided.

In one embodiment of the invention, the end part of the pile body close to the pile tip extends outwards to form an insertion block, the end surface of the pile tip close to the pile body is provided with an insertion groove, and the peripheral size of the insertion block is smaller than or equal to the size of the insertion groove; or,

the end part of the pile body close to the pile tip is provided with an inserting groove, the end surface of the pile tip close to the pile body extends outwards to form an inserting block, and the peripheral size of the inserting block is smaller than or equal to the size of the inserting groove.

So set up, through the tip that splices each other at pile body and stake point set up inserting groove and grafting piece, the tip of pile body and the tip of stake point can the accurate cooperation to guarantee that pile body and stake point can dock correctly, prevent that axial positioning deviation from appearing after pile body and the butt joint of stake point. In addition, the peripheral size of the splicing block is smaller than or equal to the size of the splicing groove, so that the pile body and the pile tip can be spliced quickly during construction, and butt joint blockage or butt joint difficulty is avoided.

In one embodiment of the invention, the reinforcing rib comprises a reinforcing part and a connecting part which are connected with each other, the reinforcing part is arranged in the pile tip, one end of the connecting part is connected with the reinforcing part, and the other end of the connecting part extends into the pile body.

By the arrangement, the reinforcing part corresponds to the pile tip in shape, so that the pile tip can be prevented from being damaged in the pile sinking process, and the bearing capacity of the pile tip is improved; the pile tip realizes the connection with the pile body through the connecting part extending into the pile body.

In one embodiment of the invention, the pile body is a square pile, and the pile tip is a quadrangular pyramid; the reinforcing part is in a quadrangular pyramid shape, and the edge of the reinforcing part corresponds to the edge of the pile tip.

By the arrangement, the square pile has a large outer surface area and is square or polygonal, and the repose angle between the pile body and the soil in the soil layer is much larger than that of a round outer surface, so that the hollow square pile can obtain larger bearing capacity than a tubular pile under the same geological conditions, and a large amount of basic funds are saved for engineering; by contrast, the bearing capacity of the square pile is larger, and the manufacturing cost of the bearing capacity per kilo-newton (KN) is lower than that of the prestressed concrete pipe pile, so that a designer can prefer the square pile under the same design bearing capacity, and the fund is saved; the theoretically calculated shearing resistance of the square pile is 2-3 times of that of the equivalent tubular pile, which shows that the square pile has excellent seismic performance and is suitable for building foundations of areas with multiple earthquakes, high-rise buildings and large-area basements; the local hollow square pile inherits and develops the characteristic of low construction breakage rate of the original concrete square pile, and the high-strength concrete is matched with the square head, so that the high-strength concrete has better impact resistance and much lower pile head breakage rate than the tubular pile. In addition, the shape and the spatial position of the reinforcing part and the pile tip correspond to each other, so that the stress capacity and the pressure resistance of the pile tip can be better increased, and the edge of the reinforcing part can bear and conduct the force borne by the pile tip in the process of penetrating the soil layer in the sinking construction.

In one embodiment of the invention, the first cage is made of prestressed reinforcement bars; the first cage body comprises a plurality of first axial rib bodies which are arranged along the axial direction of the pile body; a first through hole is formed in the pile tip and is located at a position aligned with the first axial rib body.

According to the arrangement, before the prefabricated building structure is used, prestress is applied to the steel bars in advance through a pre-tensioning method or a post-tensioning method to form prestressed steel bars, when the prefabricated building structure bears tension generated by external load, the existing prestress in concrete is firstly counteracted, then the prestressed steel bars are stressed, and finally the concrete is tensioned and then cracks appear along with the increase of the load, so that the appearance and the development of the cracks of the prefabricated building structure are delayed, and loads such as soil body extrusion, underground water scouring, earthquake load and self-gravity load which can be borne by the prefabricated building structure are improved. The deformed steel bar is a steel bar with a rib on the surface, and can better bear the action of external force due to the function of the rib and the larger bonding capacity of concrete. The first cage body comprises prestressed reinforcement, can make solid portion and hollow portion all have higher vertical atress ability, forms whole atress basis. Pile point and pile body are integrative to be set up, and the tensioning machine can pass first through-hole and first axial muscle body coupling to exert prestressing force to first axial muscle body, and then the tensioning machine can directly carry out the stretch-draw to the prefabricated building structure who contains the pile point, and the integrality of pile-forming back prefabricated building structure is better, further improves prefabricated building structure's bearing capacity. In addition, be connected between tensioning machine and the first axial muscle body portably, can reduce the engineering time, reduce construction cost.

In one embodiment of the invention, the connection portion is welded or bonded to the first axial rib.

So set up, the position relatively fixed between strengthening rib and the first cage body, the shaping of the pile body of not only being convenient for can also strengthen the intensity of pile body, prevents that prefabricated building structure from taking place deformation when being in service.

In an embodiment of the present invention, the prefabricated building structure further includes an embedded connector, the embedded connector is disposed at an end of the first axial rib along an axial direction of the pile body, and a thread is disposed on the embedded connector.

So set up, when the building construction, establish screwed pre-buried connecting piece be convenient for with other prefabricated building structure's axial muscle body coupling, therefore can splice many prefabricated building structure and cooperation use to the length of extension prefabricated building structure, perhaps pour the cushion cap behind prefabricated building structure's top connecting reinforcement in order to undertake superstructure. The embedded connecting piece is arranged on the first cage body, so that the combination rate between two prefabricated building structures can be increased; or the reinforcement ratio of the bearing platform is improved, the connection mode between the prefabricated building structure and the bearing platform is simplified, the force transmission link in the stress process is reduced, the integral vertical stress capacity of the prefabricated building structure is improved, and the mechanical property of the prefabricated building structure and the bearing platform is guaranteed. Moreover, the pre-embedded connecting piece is more convenient for the tensioning machine to be stably connected with the axial rib body, so that the tensioning machine can pre-stretch the pile body 101 to ensure that the first axial rib body 31 obtains a certain pre-stress.

In one embodiment of the invention, a second cage is further arranged in the pile body, the second cage is arranged at the end part of the embedded pipe in the axial direction, and the second cage is accommodated in the first cage.

So set up, the local reinforcement rate of solid portion has been improved in the setting of the second cage body for vertical atress ability and anti-shear force ability do not fall the anti-liter for solid pile, improve prefabricated building structure's tensile ability, compressive capacity, shock resistance and durability.

In one embodiment of the invention, the second cage comprises a second radial rib and a plurality of second axial ribs; the second axial reinforcement bodies are arranged along the axial direction of the pile body; the plurality of second axial ribs form a frame of the second cage body, the second radial ribs spirally surround the frame of the second cage body, and the second radial ribs are fixedly connected with the plurality of second axial ribs.

Due to the arrangement, the second cage body is simple and convenient in processing method and easy to produce, and meanwhile, the second axial rib body and the second radial rib body are combined, so that the strength of the second cage body is improved, the bearing capacity in the using process is improved, and the second cage body is not easy to deform.

In one embodiment of the invention, the stake point comprises a metal point disposed at an end of the stake point opposite from the body.

So set up, the tip of stake point is the metal material rather than the concrete material, can enough improve the efficiency when prefabricated building structure squeezes into the soil body, can prevent again that the concrete of stake point department from droing, arouses prefabricated building structure's intensity decline.

Drawings

FIG. 1 is a schematic view of a prefabricated building structure according to a first embodiment of the present invention;

FIG. 2 is a cross-sectional view of the prefabricated building structure of FIG. 1 taken along section A-A;

FIG. 3 is a cross-sectional view of the prefabricated building structure of FIG. 1 taken at section B-B;

FIG. 4 is a schematic view of a prefabricated building structure according to a second embodiment of the present invention;

FIG. 5 is a schematic view of the construction of the pile tip of the prefabricated building structure of FIG. 1;

FIG. 6 is a schematic view of a toe of a third embodiment of the present invention;

FIG. 7 is a schematic view of a toe of a fourth embodiment of the present invention;

FIG. 8 is a schematic view of a partially prefabricated building structure according to a first embodiment of the present invention;

FIG. 9 is a schematic view of a partially prefabricated building structure according to a second embodiment of the present invention;

fig. 10 is a schematic view of the use of the embedded connector shown in fig. 1;

FIG. 11 is a schematic view of the use of two prefabricated building structures in abutting joint;

FIG. 12 is an enlarged view at Y of FIG. 11;

FIG. 13 is a schematic view of a retaining ring of the prefabricated building structure of FIG. 11;

FIG. 14 is a schematic view of a partially prefabricated building structure according to a third embodiment of the present invention;

FIG. 15 is a schematic structural view of a quick dock assembly in one embodiment;

FIG. 16 is a schematic structural view of a quick docking assembly according to another embodiment;

FIG. 17 is a schematic view of a prefabricated building structure and a cap;

fig. 18 is a partially enlarged view of a portion C shown in fig. 17.

100. Prefabricating a building structure; 101. a pile body; 1011. an insertion block; 1012. inserting grooves; 102. pile tip; 1020. reinforcing ribs; 1021. a reinforcing portion; 1022. a connecting portion; 1023. a first through hole; 1024. a metal tip; 1025. a metal bracket; 10. a hollow portion; 111. a first hoop section; 112. a second hoop section; 20. a solid portion; 30. a first cage; 31. a first axial rib body; 32. a first radial rib; 40. a second cage; 41. a second axial rib; 42. a second radial rib body; 50. mounting a plate; 60. a corner protecting sleeve; 61. a positioning ring; 70. pre-burying a connecting piece; 71. a constriction; 72. an annular projection; 80. pre-burying a pipe; 90. positioning ribs; 200. a quick docking assembly; 210. a first insert table; 211. a first fixed part; 212. a first insertion part; 213. a first extension portion; 214. a first step surface; 220. a first base; 221. a second fixed part; 222. a fin; 230. a second insert table; 231. a third fixed part; 232. a second insertion part; 233. a first groove; 240. a second base; 241. a first end face; 242. a second end face; 250. looping; 300. a pile hoop; 311. heading; 400. a bearing platform; 410. force transmission rib body.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

The prefabricated building structure 100 refers to various pile bodies which are transported to a construction site for use after being prefabricated. The prefabricated building structure 100 may be produced centrally in a factory or prefabricated around a site. The axial length and the radial circumference of the prefabricated building structure 100 can be made as required, and the reinforcement ratio can be designed according to the stress during the transportation, hoisting and pressing of the pile, so that the flexibility is high. In addition, the prefabricated building structure 100 belongs to a part of soil-squeezing piles, so that the cross-sectional area of a bearing platform is effectively saved, the manufacturing cost is saved, the stress release of soil bodies after the soil bodies are damaged is facilitated, the phenomena of pile body inclination and the like caused by soil body squeezing are reduced, and the construction of other nearby pile bodies is facilitated.

Referring to fig. 1 to 3, fig. 1 is a schematic view illustrating a prefabricated building structure according to a first embodiment of the present invention; FIG. 2 is a cross-sectional view of the prefabricated building structure of FIG. 1 taken along section A-A; fig. 3 is a cross-sectional view of the prefabricated building structure shown in fig. 1, taken along section B-B.

The present invention provides a prefabricated building structure 100 for use in a foundation building in the field of construction technology. In this embodiment, the prefabricated building structure 100 is used to prefabricate a vertically stressed pile. It is understood that in other embodiments, the prefabricated building structure 100 may also be used in other engineering fields, such as fabricated buildings, etc., and may also be used for horizontal load-bearing piles or composite load-bearing piles, etc.

Most of the existing prefabricated building structures are solid structures or hollow structures, but the solid structures have the problems of overlarge weight, difficulty in transportation, waste of raw materials and the like; on the other hand, although the hollow structure can save raw materials, the anti-seismic mechanical property and the durability of the hollow structure cannot be guaranteed; in addition, the pile body and the pile tip of the prefabricated building structure are not firmly combined, the pile body and the pile tip are not integrated enough, and the prefabricated building structure is subjected to pressure and shearing force in the sinking construction process, so that the pile body and the pile tip are separated or misplaced easily.

The invention provides a prefabricated building structure 100, wherein the prefabricated building structure 100 comprises a pile body 101 and a pile tip 102; be equipped with first cage 30 and pre-buried pipe 80 in the pile body 101, pre-buried pipe 80 sets up at the middle part of pile body 101, and the inside cavity of pre-buried pipe 80, and first cage 30 encloses and establishes pre-buried pipe 80, and stake point 102 sets up in the tip of pile body 101, is equipped with strengthening rib 1020 in the stake point 102, and strengthening rib 1020 extends to in the pile body 101.

As shown in fig. 1, the present invention provides a prefabricated building structure 100, wherein a pre-buried pipe 80 is provided, and the pre-buried pipe 80 divides the prefabricated building structure 100 into a hollow part 10 and a solid part 20; compared with the existing solid pile structure, the prefabricated building structure 100 reduces the consumption of raw materials, lightens the weight and saves the manufacturing cost; compared with the existing hollow pile structure, the bearing capacity and the service life of the prefabricated building structure 100 are improved, so that the application range of the prefabricated building structure 100 is wider; the arrangement of the first cage 30 can further improve the bearing capacity of the prefabricated building structure 100. When the prefabricated building structure 100 is buried underground, the central unit 20 is located in a depth region (generally 2 meters to 15 meters below the foundation) where the frequency of seismic waves is the highest below the foundation, so that the seismic capacity of the prefabricated building structure 100 can be ensured, and the reliability of the prefabricated building structure 100 in service is ensured. In addition, when the prefabricated building structure 100 is buried underground, since both ends of the prefabricated building structure 100 are the solid parts 20, the prefabricated building structure 100 is beneficial to penetration of a geological soil layer during construction, the construction speed is higher, the breakage rate is lower, the project period is saved, and the engineering quality is guaranteed, compared with a hollow pile. In addition, the pile tip 102 can increase the ability of the prefabricated building structure 100 to penetrate through the soil layer during sinking construction, can play a guiding role, and can also reduce the probability of the prefabricated building structure 100 breaking; the reinforcing ribs 1020 in the pile tip 102 extend into the pile body 101, so that the pile body 101 and the pile tip 102 can be well combined, the pile body 101 is prevented from being separated from the pile tip 102 due to stress in the process of using the prefabricated building structure 100, and the integration of the pile body 101 and the pile tip 102 is better.

Preferably, the hollow portion 10 and the solid portion 20 are made of a concrete material, and the outer peripheral walls of the hollow portion 10 and the solid portion 20 are substantially the same shape.

It is understood that the stub tip 102 may be located at an end of the stub body 101 relatively close to the hollow portion 10, or at an end relatively close to the solid portion 20.

It is understood that the pre-buried pipe 80 may be disposed at the midpoint of the prefabricated building structure 100, or may be partially offset, and may be selected differently according to actual needs; the embedded pipe 80 can be a metal pipe, a plastic pipe or a ceramic pipe; the shape of the cross section of the buried pipe 80 may also be circular or other polygonal shapes, such as quadrangle, pentagon, etc.

So set up, can be so that prefabricated building structure 100 structure and bearing capacity are diversified, can satisfy the demand of different operating modes, when satisfying actual intensity requirement, antidetonation mechanical properties and durability, also reduced the use of raw and other materials, lightened prefabricated building structure 100's weight, saved the cost of manufacture.

Referring to fig. 4, fig. 4 is a schematic view of a prefabricated building structure 100 according to a second embodiment of the present invention. The end part of the pile body 101 close to the pile tip 102 extends outwards to form an insertion block 1011, the bottom surface of the pile tip 102 close to the pile body 101 is provided with an insertion groove 1012, and the outer circumference dimension of the insertion block 1011 is smaller than or equal to the dimension of the insertion groove 1012.

It can be understood that in other embodiments, the end of the pile body 101 near the pile tip 102 may be provided with an insertion groove 1012, the bottom surface of the pile tip 102 near the pile body 101 extends outward and forms an insertion block 1011, and the outer circumference of the insertion block 1011 is smaller than or equal to the size of the insertion groove 1012.

So set up, through set up inserting groove 1012 and grafting piece 1011 at the tip that the stake body 101 and stake point 102 splice each other, the tip of stake body 101 and the tip of stake point 102 can accurately cooperate to guarantee that stake body 101 and stake point 102 can correctly dock, prevent that axial positioning deviation from appearing after stake body 101 and the butt joint of stake point 102, this kind of locate mode is more simple and convenient. In addition, the peripheral size of the insertion block 1011 is smaller than or equal to the size of the insertion groove 1012, so that the pile body 101 and the pile tip 102 can be spliced quickly during construction, and butt joint blockage or butt joint difficulty is avoided.

In one embodiment, the reinforcing rib 1020 includes a reinforcing portion 1021 and a connecting portion 1022 connected with each other, the reinforcing portion 1021 is disposed in the pile tip 102, one end of the connecting portion 1022 is connected with the reinforcing portion 1021, and the other end extends into the pile body 101.

In this arrangement, the reinforcing portion 1021 corresponds to the shape of the pile point 102, and thus the pile point 102 can be prevented from being damaged during pile sinking, and the force-bearing capacity of the pile point 102 can be improved.

In one embodiment, the ribs 1020 are made of at least one of deformed steel, steel rods for prestressed concrete, stainless steel rods, hot rolled steel rods, medium strength prestressed wires, stress relief wires, steel strands, prestressed deformed steel bars, hot rolled steel coils of low carbon steel, and cold drawn low carbon steel wires for concrete products.

So set up, strengthening rib 1020's intensity is high, difficult fracture to low price is simple easily obtained.

Referring to fig. 5, fig. 5 is a schematic structural view of the pile tip 102 of the prefabricated building structure 100 shown in fig. 1.

In one embodiment, the pile body 101 is a square pile, and the pile tip 102 is a quadrangular pyramid; the reinforcement 1021 is a quadrangular pyramid, and the edge of the reinforcement 1021 corresponds to the edge of the toe 102.

By the arrangement, the square pile has a large outer surface area and is square or polygonal, and the repose angle between the pile body 101 and soil in a soil layer is much larger than that of a round outer surface, so that the hollow square pile can obtain larger bearing capacity than a tubular pile under the same geological conditions, and a large amount of basic funds are saved for engineering; by contrast, the bearing capacity of the square pile is larger, and the manufacturing cost of the bearing capacity per kilo-newton (KN) is lower than that of the prestressed concrete pipe pile, so that a designer can prefer the square pile under the same design bearing capacity, and the fund is saved; the theoretically calculated shearing resistance of the square pile is 2-3 times of that of the equivalent tubular pile, which shows that the square pile has excellent seismic performance and is suitable for building foundations of areas with multiple earthquakes, high-rise buildings and large-area basements; the local hollow square pile inherits and develops the characteristic of low construction breakage rate of the original concrete square pile, and the high-strength concrete is matched with the square head, so that the high-strength concrete has better impact resistance and much lower pile head breakage rate than the tubular pile; in addition, the shape and the spatial position of the reinforcing part 1021 and the pile tip 102 correspond to each other, so that the stress capacity and the pressure resistance of the pile tip 102 can be better increased, and the edge of the reinforcing part 1021 can bear and conduct the force from the tip of the pile tip 102 in the process of sinking construction to penetrate through the soil layer.

In one embodiment, the first cage 30 is made of prestressed steel bars, the first cage 30 includes a plurality of first axial reinforcement bodies 31, and the plurality of first axial reinforcement bodies 31 are arranged along the axial direction of the pile body 101; the pile tip 102 is formed with a first through hole 1023, and the first through hole 1023 is located at a position aligned with the first axial rib 31.

According to the arrangement, before the prefabricated building structure 100 is used, prestress is applied to the steel bars in advance through a pre-tensioning method or a post-tensioning method to form prestressed steel bars, when the prefabricated building structure 100 bears tensile force generated by external load, the existing prestress in concrete is firstly counteracted, then the prestressed steel bars are stressed, and finally, the concrete is tensioned and then cracks appear along with the increase of the load, so that the appearance and the development of the cracks of the prefabricated building structure 100 are delayed, and the loads such as soil body extrusion, underground water scouring, earthquake load and self-gravity load which can be borne by the prefabricated building structure 100 are improved. The deformed steel bar is a steel bar with a rib on the surface, and can better bear the action of external force due to the function of the rib and the larger bonding capacity of concrete. The first cage 30 is made of prestressed steel bars, so that the solid portion 20 and the hollow portion 10 have high vertical stress capability, and an integral stress foundation is formed. Pile point 102 and pile body 101 are integrative to be set up, and the tensioning machine can pass first through-hole 1023 and be connected with first axial muscle body 31 to exert prestressing force to first axial muscle body 31, and then the tensioning machine can directly carry out stretch-draw to prefabricated building structure 100 that contains pile point 102, and prefabricated building structure 100's after the stake is made the wholeness better, further improves prefabricated building structure 100's bearing capacity. In addition, the tensioning machine is connected with the first axial rib body 31 simply and conveniently, so that the construction time can be shortened, and the construction cost can be reduced.

In one embodiment, the first cage 30 further comprises a first radial rib 32, the plurality of first axial ribs 31 forming a framework of the first cage 30, the first radial rib 32 spirally surrounding the framework of the first cage 30; the first radial rib 32 and the first axial rib 31 are fixed by spot welding.

With the arrangement, the first cage body 30 has high bearing strength and simple processing, and only the first radial rib bodies 32 are wound on the frame formed by the first axial rib bodies 31 while the plurality of first axial rib bodies 31 are axially transported, so that the working hours are saved; and can increase the number of turns and the encryption length that first radial muscle body 32 spirals around at the great position of atress degree as required, for example increase the number of turns and the encryption length that first radial muscle body 32 spirals around at the both ends of first cage 30, prevent that prefabricated building structure 100 from suffering structural failure when burying underground the excessive strength of bearing.

It is understood that, in other embodiments, the first radial rib 32 and the first axial rib 31, and the second axial rib 41 and the second radial rib 42 may be fixed by snapping, binding, or the like, which is not listed here.

In one embodiment, the first axial reinforcement 31 is made of at least one of a steel bar for prestressed concrete (PC steel bar), a stainless steel bar, a hot rolled steel bar, a medium strength prestressed wire, a stress relief wire, a stranded wire, and a prestressed twisted steel; and/or the presence of a catalyst in the reaction mixture,

the first radial rib 32 is made of at least one of a steel bar for prestressed concrete (PC steel bar), a stainless steel bar, a hot rolled steel bar, a medium strength prestressed wire, a stress-relief wire, a strand, a prestressed twisted steel, a low carbon hot rolled steel disc strip, and a cold drawn low carbon wire for concrete products.

With the arrangement, when the tensioning machine is used for tensioning the first axial rib body 31, the first axial rib body 31 can bear larger prestress, the prestress can be well kept not to be lost, and the pressure borne by the tensioning machine in the service process is larger; in addition, when the tensioning machine is used for tensioning the first axial rib body 31, the first axial rib body 31 can transmit pretension to the first radial rib body 32, so that the first radial rib body 32 can also obtain a certain degree of pretension, the first radial rib body 32 can better receive and retain the prestress transmitted by the first axial rib body 31 by adopting the steel bars, and the situation that the first radial rib body 32 is brittle when the first cage body 30 is tensioned is avoided.

It is understood that the outer edge of the cross section of the first cage 30 is circular or polygonal, and the polygonal is triangular, square/rectangular, pentagonal, hexagonal, etc., which are not listed here.

With such an arrangement, the first cages 30 of different shapes can be designed according to the practical application and the corresponding stress condition of the prefabricated building structure 100, so as to achieve different force bearing effects.

In one embodiment of the present invention, first through-hole 1023 has a filling stopper therein for filling and sealing first through-hole 1023.

So set up, can prevent that prefabricated building structure 100 is in the in-service process, during groundwater or other underground impurity get into pile 101 from first through-hole 1023, prevented that first cage 30 from being corroded, prolonged prefabricated building structure 100's life.

Specifically, the filling plugging material is cement mixture, epoxy resin, structural adhesive and the like, and the filling plugging material can be sealed in an anticorrosion way.

In one embodiment of the present invention, the number of the first through holes 1023 is 4 to 20.

By means of the arrangement, the connection strength of the first cage body 30 and the end plate during pre-stretching can be guaranteed, and excessive bearing capacity loss of the pile tip 102 can be avoided.

In one embodiment, the first cage 30 further comprises a first radial rib 32, the plurality of first axial ribs 31 forming a framework of the first cage 30, the first radial rib 32 helically surrounding the framework of the first cage 30; the first radial rib 32 and the first axial rib 31 are fixed or bound by spot welding.

In one embodiment, post body 101 is integrally formed with post tip 102.

By the arrangement, the pile body 101 is combined with the concrete of the pile tip 102, the integrity of the prefabricated building structure 100, the force transmission capability and the soil layer penetrating power of the pile tip 102 are improved, the pile tip 102 is prevented from being stressed and deformed when the prefabricated building structure 100 is buried in the soil layer, and the service reliability of the prefabricated building structure 100 is guaranteed.

In one embodiment, the connecting portion 1022 and the first axial rib 31 are welded or bound together.

So set up, the position between strengthening rib 1020 and the first cage 30 is fixed relatively, not only is convenient for the shaping of pile 101, can also strengthen the intensity of pile 101, prevents that prefabricated building structure 100 from taking place deformation when being in service.

It can be understood that when the connecting portion 1022 and the first axial rib 31 are fixed by welding, the connecting portion 1022 and the first axial rib 31 are firmly connected, and force transmission can be performed between the connecting portion 1022 and the first axial rib 31, so that the force bearing performance of the prefabricated building structure is better; when the connecting portion 1022 and the first axial rib 31 are connected by binding, the two are locally connected in a soft manner, which not only ensures that the positions of the first cage 30 and the reinforcing rib 1020 are relatively fixed during processing, but also prevents internal stress from being generated during processing. In actual production, the connection mode between the connection part 1022 and the first axial rib 31 can be selected as required.

Referring to fig. 9, fig. 9 is a schematic structural diagram of the embedded connector 70 shown in fig. 1.

In one embodiment, the prefabricated building structure 100 further includes a pre-embedded connector 70, the pre-embedded connector 70 is disposed at an end of the first axial rib 31 along the axial direction of the pile 101, and a thread is disposed on the pre-embedded connector 70.

With the arrangement, during building construction, the threaded pre-embedded connectors 70 are convenient to connect with axial ribs of other prefabricated building structures, so that a plurality of prefabricated building structures can be spliced and matched for use to prolong the length of the prefabricated building structure 100, or a bearing platform 400 is poured after connecting reinforcing steel bars at the top of the prefabricated building structure 100 to bear an upper-layer building; the pre-buried connector 70 can also increase the bonding rate between the two prefabricated building structures 100; or the reinforcement ratio of the bearing platform 400 is improved, the connection mode between the prefabricated building structure 100 and the bearing platform 400 is simplified, the force transmission link in the stress process is reduced, the integral vertical stress capacity of the prefabricated building structure 100 is improved, and the mechanical property of the prefabricated building structure 100 and the bearing platform is guaranteed. Moreover, the pre-embedded connecting piece is more convenient for the tensioning machine to be stably connected with the axial rib body, so that the tensioning machine can pre-stretch the pile body 101 to ensure that the first axial rib body 31 obtains a certain pre-stress.

Specifically, the embedded connector 70 is disposed at an end of the first axial rib 31 relatively close to the pile tip 102.

So set up, the tensioning machine can be through pre-buried connecting piece 70 connection first axial muscle body 31, and pre-buried connecting piece 70's setting can simplify the step of being connected between tensioning machine and the first axial muscle body 31, has saved the required length of time of stretch-draw. When the first cage 30 is connected with the stretch-draw machine through the external steel bar, the external steel bar can be quickly connected with the embedded connecting piece 70 through threads, the connection mode is simple, and the reliability of the connection position is high.

In one embodiment of the present invention, the embedded connector 70 is further protruded with an annular protrusion 72 on the outer circumferential wall relatively near the end of the prefabricated building structure 100. Preferably, the outer diameter of the annular protrusion 72 is gradually reduced from the end part of the embedded connector 70 to the middle part; the outer peripheral wall of the annular projection 72 is an arc surface.

With such an arrangement, the annular protrusion 72 can homogenize the prestress, so that the prestress which can be borne by the second cage 40 and/or the first cage 30 during the pre-stretching is larger, and the damage of the pre-buried connecting piece 70 is prevented.

It should be noted that the embedded connectors 70 in the two prefabricated building structures 100 may be of the same type or different types, and may be selected according to the working conditions.

In one embodiment of the present invention, the embedded connector 70 is formed together with the prefabricated building structure 100. It is understood that in other embodiments, the pre-embedded connectors 70 may be later connected to the second cage 40 or the first cage 30. The operation steps are that the concrete at the end of the prefabricated building structure 100 is chiseled to expose the first axial direction reinforcing steel bar or the second axial direction reinforcing steel bar, then the embedded connector 70 is connected to the end of the first axial direction reinforcing steel bar or the second axial direction reinforcing steel bar, and then the end of the first axial direction reinforcing steel bar or the second axial direction reinforcing steel bar is formed with the upset 311 by hot working, thus completing the connection.

The prefabricated building structures 100 may be used not only alone, but in combination with a plurality of prefabricated building structures 100. For example, two, three, four or even more prefabricated building structures 100 may be docked for use as required by the operating conditions.

In one embodiment, the second cage 40 is further disposed in the pile 101, the second cage 40 is disposed at an end of the embedded tube 80 in the axial direction, and the second cage 40 is accommodated in the first cage 30.

With the arrangement, the arrangement of the second cage body 40 improves the local reinforcement ratio of the pile body 101, so that the longitudinal stress capacity and the anti-shearing force capacity are not lowered or raised relative to a solid pile, and the tensile capacity, the compressive capacity, the seismic capacity and the durability of the prefabricated building structure 100 are improved.

It can be understood that the second cage 40 may be disposed at one end of the embedded tube 80, or may be disposed at two ends of the embedded tube 80; when the second cages 40 are provided at both ends of the embedded pipe 80, the lengths of the two second cages 40 may be the same or different, and the specific configurations of the two second cages 40 may be the same or different.

It is understood that the outer edge of the cross-section of the second cage 40 is circular or polygonal, and the polygonal shape is triangular, square/rectangular, pentagonal, hexagonal, etc., which are not listed here.

With the arrangement, the second cages 40 in different shapes can be designed according to the practical application and the corresponding stress condition of the prefabricated building structure 100, so as to achieve different force bearing effects.

In one embodiment of the present invention, the second cage 40 is made of prestressed or threaded steel.

So set up, second cage 40 can select prestressing steel or screw-thread steel as required, and prestressing steel can further improve prefabricated building structure 100's vertical atress ability, and the screw-thread steel can reduce prefabricated building structure 100's cost of manufacture.

In one embodiment, the second cage 40 comprises a second radial rib 42 and a plurality of second axial ribs 41; the second axial ribs 41 are arranged along the axial direction of the pile body 101, the second axial ribs 41 form a frame of the second cage body 40, the second radial ribs 42 spirally surround the frame of the second cage body 40, and the second radial ribs 42 are fixedly connected with the second axial ribs 41.

Due to the arrangement, the second cage body 40 is simple and convenient in processing method and easy to produce, and meanwhile, the second axial rib body 41 and the second radial rib body 42 are combined, so that the strength of the second cage body 40 is improved, the bearing capacity in the using process is improved, and the second cage body is not easy to deform.

It is understood that the second radial rib 42 and the second axial rib 41 can be fixed by welding, clamping, binding, etc., which are not listed here.

In one embodiment, the second axial rib body 41 is made of at least one of deformed steel bars, steel bars for prestressed concrete (PC steel bars), stainless steel bars, hot rolled steel bars, medium strength prestressed wires, stress relief wires, steel strands, and prestressed deformed steel bars; and/or the presence of a catalyst in the reaction mixture,

the second radial rib 42 is made of at least one of deformed steel bars, prestressed concrete steel bars (PC steel bars), stainless steel bars, hot-rolled steel bars, medium-strength prestressed steel wires, stress-relief steel wires, steel strands, prestressed twisted steel bars, low-carbon steel hot-rolled disc strips, and cold-drawn low-carbon steel wires for concrete products.

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 with the embedded connector 70 through a thread.

In one embodiment, the pre-embedded connector 70 has a contraction opening 71 for connecting with 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 with the embedded connector 70 is provided with an upset 311, and the contraction opening 71 is used for limiting the upset 311.

In one embodiment of the present invention, the prefabricated building structure 100 further comprises a mounting plate 50, the mounting plate 50 being provided on the wall surface of the embedded pipe 80 near one end of the solid portion 20, and the second cage 40 extending to the mounting plate 50 and being connected to the mounting plate 50.

So set up, the mounting panel 50 not only can make the second cage body 40 fixed, prevents that the second cage body 40 from warping and misplacing in the in-service process, can also prevent that the concrete from droing on the lateral wall that the pre-buried pipe 80 is close to solid portion 20 relatively, avoids the second cage body 40 to expose in the air, prevents the corruption of the second cage body 40, influences the service strength of the second cage body 40.

Specifically, the mounting plate 50 is a steel plate. The second cage 40 is welded to the mounting plate 50.

It is understood that in other embodiments, the second cage 40 can be directly and fixedly connected to the embedded tube 80.

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

With such an arrangement, the precast building structure 100 can be prevented from falling off the concrete on the end of the precast building structure 100 during the process of being buried in the ground or during service, which causes the second cage 40 or the first cage 30 to be exposed to corrosion, so that the strength of the precast building structure 100 is reduced.

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

In one embodiment of the present invention, the corner protector 60 includes at least one first hoop section 111 depressed toward the axial direction of the prefabricated building structure 100, and at least one second hoop section 112 protruded outwardly with respect to the first hoop section 111, and the first hoop section 111 is spaced apart from the second hoop section 112.

With such an arrangement, the corner protector 60 can be prevented from being displaced relative to the prefabricated building structure 100 during production, and the fixing performance is good; in addition, redundant concrete residual slurry can be removed from the die along with the corner protection sleeve 60 during production, so that the die is convenient to clean and maintain; the corner protection sleeve 60 can wrap the end part of the prefabricated building structure 100, so that the surface of the prefabricated building structure 100 is smoother and tidier, and concrete at the end part of the prefabricated building structure 100 can be protected from falling off when the prefabricated building structure 100 is used; because the angle bead cover 60 has wrapped the tip of prefabricated building structure 100, can make when filling the concrete vibrate more fully, prefabricated building structure 100's breakage rate is lower, and the prefabricated building structure 100 who makes is high, of high quality. When the prefabricated building structure 100 is buried in a soil body, the inward-concave first hoop section 111 can increase the wrapping force of the rebounded soil body, and is beneficial to transferring the bearing force of the prefabricated building structure 100 to the soil body, so that the bearing force of a single pile is improved; when the prefabricated building structure 100 is used for supporting the platform 400, the concave first hoop section 111 can increase the engaging force of the prefabricated building structure 100 and the concrete in the platform 400, which is beneficial for the force borne by the platform 400 to be transferred to the prefabricated building structure 100, thereby increasing the bearing capacity and integrity of the platform 400.

In one embodiment of the present invention, the first and

second hoop sections

111 and 112 extend in the circumferential direction of the prefabricated building structure 100.

By the arrangement, the engaging force between the prefabricated building structure and the soil body or between the prefabricated building structure 100 and the bearing platform 400 can be increased, and the bearing capacity of the prefabricated building structure 100 is improved.

Referring to fig. 8 to 9, fig. 8 is a schematic view of a partially prefabricated building structure 100 according to a first embodiment of the present invention; figure 9 is a schematic view of a partially prefabricated building structure 100 according to a second embodiment of the present invention.

In one embodiment of the present invention, the first and

second hoop sections

111 and 112 are both annular.

With such an arrangement, the prefabricated building structure 100 is less likely to generate stress concentration, which affects the use strength thereof. And the processing method is simple and the cost is low.

It is understood that the first hoop section 111 may be one circular groove, or a plurality of circular grooves may be uniformly arranged along the axial direction of the prefabricated building structure 100, or a plurality of square/circular/irregular grooves may be uniformly arranged along the radial direction of the prefabricated building structure 100, as long as the anchoring effect is achieved.

In one embodiment of the present invention, the width of the first cuff section 111 is 1mm to 100mm, and/or the depth of the first cuff section 111 is 0.1mm to 50 mm. It is understood that the width of the first hoop section 111 herein refers to the width of the first hoop section 111 that is concave in the axial direction of the prefabricated building structure 100; the depth of the first hoop section 111 refers to the depth of the first hoop section 111 that is concave in the radial direction of the prefabricated building structure 100.

So set up, neither can influence prefabricated building structure 100's bearing capacity, can make again to have higher snap-in force between prefabricated building structure 100 and the soil body to processing technology is simple, is favorable to the outflow of mix water in the concrete during production.

In one embodiment of the invention, the outer edge of the cross-section of the second hoop section 112 is the same as the outer edge of the cross-section of the prefabricated building structure 100.

So set up, prefabricated building structure 100 is the same with the biggest external diameter of angle bead cover 60 among the prefabricated building structure 100, can not produce the hindrance when burying the soil body to do not have unnecessary edges and corners in the mould of the prefabricated building structure 100 that corresponds, prevent to persist the surplus thick liquid of concrete in the mould.

In one embodiment of the present invention, the first hoop section 111 extends in the axial direction of the prefabricated building structure 100; the height of the first cuff section 111 is 10mm to 500mm, and/or the depth of the first cuff section 111 is 0.1mm to 50 mm. It is understood that the height of the first hoop section 111 herein refers to the height of the first hoop section 111 that is concave along the axial direction of the prefabricated building structure 100; the depth of the first hoop section 111 refers to the depth of the first hoop section 111 that is concave in the radial direction of the prefabricated building structure 100.

By the arrangement, the processing technology is simple, the bearing capacity of the single pile cannot be damaged, the resistance in underground water discharge can be reduced during construction, and the soil stress can be released; the size of the prefabricated building structure does not influence the bearing capacity of the prefabricated building structure 100, and the prefabricated building structure 100 and a soil body have higher engaging force, so that the prefabricated building structure is beneficial to the outflow of mixing water in concrete during production and the drainage of underground water during construction.

Referring to fig. 9 again, as shown in fig. 9, the first hoop section 111 is a plurality of rectangular grooves, and the plurality of first hoop sections 111 are uniformly distributed on the outer circumferential wall of the prefabricated building structure 100 around the axial center of the prefabricated building structure 100. It is understood that the first hoop section 111 may also be in other common shapes such as circular arc, wave, triangle, trapezoid, etc., and may also be non-uniformly distributed as long as the anchoring effect is achieved.

Referring to fig. 6 and 7 together, fig. 6 is a schematic view of a pile tip according to a third embodiment of the present invention; fig. 7 is a schematic view of a toe in a fourth embodiment of the present invention.

In one embodiment, the stub tip 102 includes a metal tip 1024, and the metal tip 1024 is disposed at an end of the stub tip 102 opposite from the stub body 101.

With the arrangement, the tip of the pile tip 102 is made of metal material instead of concrete material, so that the efficiency of the prefabricated building structure 100 in driving into the soil body can be improved, and the falling of the concrete at the pile tip 102 can be prevented to cause the strength reduction of the prefabricated building structure 100.

In one embodiment, the stub tip 102 further comprises a metal bracket 1025, wherein the outer peripheral wall of the metal bracket 1025 is of a truncated cone structure with a notch at the end part, and the end with the smaller inner diameter in the truncated cone structure is used for installing the metal tip 1024; the interior of the metal tines 1024 and the metal brackets 1025 are filled with concrete.

So set up, stake point 102 forms the outside structure for metal crate, inside is the concrete, and when stake point 102 was beaten into the soil body, metal crate had better penetrating power, and the concrete can give stake point 102 higher intensity to the concrete can not drop in metal crate's inside.

In a third embodiment shown in fig. 6, the metal prongs 1024 in the stub tip 102 are hollow and tapered, and the maximum outer diameter of the metal prongs 1024 is less than or equal to the minimum inner diameter of the metal support 1025, so as to achieve a snap-fit between the metal prongs 1024 and the metal support 1025. In addition, metal frame 1025 has a through hole, and the concrete inside the metal frame has a through hole to form a first through hole 1023 on pile tip 102.

The fourth embodiment shown in fig. 7 is substantially the same as the third embodiment shown in fig. 6, except that the metal tip 1024 in the stub tip 102 is a solid structure; preferably, the solid structure is recessed relatively close to the end of the pile body 101 to increase the bonding force between the metal tip 1024 and the concrete.

Preferably, the metal prongs 1024 and the metal frame 1025 can be further fixedly connected by gluing, screwing, welding, or the like.

It is understood that in other embodiments, the metal tip 1024 may have other shapes, such as cross shape, step shape, wave shape, etc., as long as the function of guiding the pile body can be achieved during construction.

Referring to fig. 11 to 13, fig. 11 is a schematic view illustrating the butt joint of two prefabricated building structures 100; FIG. 12 is an enlarged view at Y of FIG. 11; fig. 13 is a schematic view of the positioning ring 61 of the prefabricated building structure 100 of fig. 11.

In one embodiment, the first cage 30 of each of the two prefabricated building structures 100 is provided with a quick connector, and the two quick connectors can be connected by a quick docking assembly 200 to extend the length of the prefabricated building structure 100.

In one embodiment, the quick docking assembly 200 is a ferrous metal. Preferably, the quick dock assembly 200 is carbon steel or alloy steel. Specifically, the quick butt joint assembly 200 is carbon steel, chromium vanadium steel, chromium nickel steel, chromium molybdenum steel, chromium nickel molybdenum steel, chromium manganese silicon steel, ultra-high strength steel or stainless steel. It is understood that in other embodiments, the quick dock assembly 200 may be constructed of other materials.

In one embodiment of the present invention, the corner protector 60 further comprises a positioning ring 61, the positioning ring 61 being located at an end of the corner protector 60 and fixedly connected to the first cage 30.

With the arrangement, the position between the corner protector 60 and the first cage 30 is relatively fixed, that is, the position between the corner protector and the pile 101 is fixed, so that the pile 101 can be formed conveniently, the strength of the pile 101 can be enhanced, and the deformation of the corner protector 60 in service of the prefabricated building structure 100 can be prevented.

Specifically, in the present embodiment, the positioning ring 61 is sleeved on the embedded connector 70 at the end of the first axial rib 31, and the positioning ring 61 and the embedded connector 70 may be fixed only by sleeving or may be fixed by welding after sleeving. It is understood that in other embodiments, the positioning ring 61 may be directly sleeved on the first axial rib 31 without the embedded connector 70. As long as the position between the corner protector 60 and the first cage 30 can be relatively fixed by the positioning ring 61.

Furthermore, the number of the positioning rings 61 can be 1 or more, and each positioning ring 61 is sleeved with one embedded connecting piece 70 or one first axial rib body 31, so as to achieve a better fixing purpose.

In one embodiment, the pretensioning process for the first cage 30 in the prefabricated building structure 100 is: welding one end of the positioning ring 61, which is relatively far away from the ring shape, on the corner protector sleeve 60, sleeving and fixing the other end of the positioning ring 61 on the embedded connecting piece 70, then connecting the embedded connecting piece 70 with the end plate, wherein the positioning ring 61 cannot be separated from the embedded connecting piece 70 after connection, so that the relative fixation of the position between the corner protector sleeve 60 and the first cage body 30 is realized; and then moving the end plate to realize tensioning.

It is understood that the positioning ring 61 may also be a circular ring shape, or may have other shapes as long as the first axial rib or the second axial rib can be sleeved with the positioning ring.

In this embodiment, the positioning ring 61 is welded to the end of the corner protector 60. In other embodiments, the retaining ring 61 may also be integrally formed with the corner protector 60.

Referring to fig. 14, fig. 14 is a schematic view of a part of a prefabricated building structure according to a third embodiment of the present invention.

In one embodiment of the present invention, the prefabricated building structure 100 further comprises a positioning rib 90, and the positioning rib 90 is fixedly connected to the first cage 30 and the corner protector 60.

So set up, the position between angle bead cover 60 and the location muscle 90 is fixed relatively, not only is convenient for the shaping of pile body 101, can also strengthen the intensity of pile body 101, prevents that angle bead cover 60 from taking place the deformation when prefabricated building structure 100 is in service.

Specifically, one end of the positioning rib 90 is connected to the first cage 30, and the other end is connected to the corner protection sleeve 60; the connection mode can be welding, can also be through steel wire ligature connection, can also be other connection modes, as long as can play the fixed action.

It will be appreciated that in other embodiments, the locating ring 61 and the locating rib 90 may be used together to better determine the relative position between the corner protector 60 and the first cage 30.

In one embodiment of the present invention, the first and

second hoop sections

111 and 112 are connected by a right angle or a circular arc.

So set up, can select the connected mode of first hoop section 111 and second hoop section 112 according to operating condition demand or processing conditions to right angle connection or circular arc are connected the processing cost and are lower, easy to carry out.

It is understood that the first and

second hoop sections

111 and 112 may be connected in other ways, regardless of the processing cost.

Referring to fig. 15, fig. 15 is a schematic structural diagram of a quick docking assembly 200 according to an embodiment.

The quick docking assembly 200 in the first embodiment includes a first docking station 210 and a first base 220, the first docking station 210 includes a first fixing portion 211, a first inserting portion 212 and a first extending portion 213 located between the first fixing portion 211 and the first inserting 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 docking station 210 is connected to the quick connector of one of the prefabricated building structures 100 through the first fixing portion 211, and the first base 220 is connected to the quick connector of another prefabricated building structure 100 through the second fixing portion 221; the first plug part 212 is convexly arranged on the first extension part 213, and a first step surface 214 is formed between the first plug part 212 and the first extension part 213; the plurality of fins 222 are arranged around each other; the first inserting stage 210 can pass through the openings defined by the plurality of fins 222 through elastic expansion of the fins 222, the fins 222 can elastically contract and enclose the first extending portion 213, and the end surfaces of the fins 222 and the first step surface 214 of the first inserting stage 210 are oppositely arranged.

In this embodiment, the rapid docking assembly 200 is used in a process that the first socket 210 is connected to the embedded connector 70 in one prefabricated building structure 100 through the first fixing portion 211, the first base 220 is connected to the embedded connector 70 in the other prefabricated building structure 100 through the second fixing portion 221, the first inserting portion 212 and the first extending portion 213 of the first socket 210 extend into the inner wall of the first base 220 and move along the inserting direction α, the first inserting portion 212 of the first socket 210 applies pressure to the fin 222 so that the fin 222 elastically expands until the first inserting portion 212 passes through the fin 222, the fin 222 elastically contracts and encloses the first extending portion 213 at the moment when the first inserting portion 212 passes through the fin 222, and when a force in a direction opposite to the inserting direction α is applied to the first socket 210, the end of the fin 222 abuts against the first step surface 214 between the first inserting portion 212 and the first extending portion 213 and limits the first socket 210.

The rapid docking assembly 200 and the embedded connector 70 provided by the embodiment are simple and convenient to mount, after the first plugging portion 212 of the first plugging platform 210 is inserted into the first base 220, the fin 222 can elastically contract and close the extension portion of the first base 220, the end portion of the fin 222 abuts against the step surface of the first plugging platform 210, and the abutting surface between the end portion of the fin 222 and the first step surface 214 of the first plugging platform 210 is approximately annular, so that the abutting area is large, the joint strength between two prefabricated building structures 100 can be ensured, and particularly, the vertical stress performance is greatly improved; the fins 222 not only can enclose the first extension part 213 of the insert table, but also can limit the first extension part 213, and prevent the first extension part 213 from shaking in the radial direction. In addition, the rapid docking assembly 200 provided by the embodiment has the advantages of simple processing technology, low cost and wide application range.

Referring to fig. 16, fig. 16 is a schematic structural diagram of another embodiment of a quick docking assembly 200.

The quick docking assembly 200 of the second embodiment includes a second socket 230, a second base 240 and a ring buckle 250, wherein the second socket 230 includes a third fixing portion 231 and a second plugging portion 232 disposed oppositely, and the second plugging portion 232 is formed with a first groove 233; the second base 240 includes a first end surface 241 and a second end surface 242 which are oppositely arranged; the ring buckle 250 has an opening (not shown) and can be elastically contracted, and the ring buckle 250 is sleeved on the second insert stage 230 and accommodated in the first groove 233; the ring buckle 250 can be inserted into the second base 240 along the insertion direction together with the second insertion portion 232 of the second socket 230, and the ring buckle 250 can abut against the second end surface 242 of the second base 240 through elastic expansion and limit the reverse movement of the second socket 230 along the insertion direction.

After the second inserting portion 232 of the second inserting stage 230 is inserted into the second base 240, the ring buckle 250 can be ejected out of the first groove 233 through the elastic expansion portion and abuts against the second end face 242 of the second base 240, an abutting surface between the ring buckle 250 and the second end face 242 is approximately annular, an abutting area is large, the joint strength between two embedded connectors 70 can be ensured, and particularly, the vertical stress performance is greatly improved. In addition, the rapid docking assembly 200 provided by the embodiment has the advantages of simple processing technology, low cost and wide application range.

It is understood that the insertion direction α may be, but is not limited to, the above-described directions, and that even partial angular offsets are intended to be within the scope of the present invention.

In one embodiment, after the two prefabricated building structures 100 are butted, a pile collar 300 is disposed on the peripheral wall of the junction between the two prefabricated building structures, and the pile collar 300 is used for fastening the butted joint of the two prefabricated building structures 100 to prevent the two prefabricated building structures 100 from being dislocated during use or service.

It is understood that the two prefabricated building structures 100 may be the same prefabricated pile or different prefabricated piles; the pile can be a solid pile, a hollow pile or a local hollow pile; can be a square pile or a tubular pile.

In one embodiment, a glue coating (not shown) is also provided between two prefabricated building structures 100. The glue coating layer fills the gap between the two prefabricated building structures 100 and the gap between the prefabricated building structures 100 and the quick butt joint component 200, prevents water or oxygen from corroding the first cage body 30, the second cage body 40 and the quick butt joint component 200 after being immersed, and increases the corrosion resistance of the components; after the glue coating layer is cured, the two prefabricated building structures 100 can be shaken or rotated, the rapid butt joint assembly and the prefabricated building structures 100 can be prevented from shaking or rotating, and the stability of the prefabricated building structures 100 is improved; the cured glue coating layer can bear the force, so that the two prefabricated building structures 100 are combined more tightly and firmly, and the stress performance is better; in addition, the glue coating layer can also play a role in uniform stress after being cured, even if the situation that the stress is slightly uneven exists between the two prefabricated building structures 100 or between the prefabricated building structures 100 and the quick butt joint assembly 200, the cured glue coating layer can also balance the stress, the vertical stress capacity of the prefabricated building structures 100 is improved, and the service life of the prefabricated building structures 100 is prolonged.

In one embodiment of the invention, the adhesive coating is a paste adhesive.

So set up, the glue of paste is convenient for attach to and is difficult for flowing on prefabricated building structure 100's terminal surface to the glue of paste can also be extruded to prefabricated building structure 100 and dock the subassembly 200 fast when the butt joint between, makes to dock closely between subassembly 200 and the prefabricated building structure 100 fast, and whole prefabricated building structure 100 stability in use is better.

In one embodiment of the invention, the adhesive is a two-fluid hybrid cured adhesive (AB adhesive).

So set up, AB glue has that warehousing and transportation performance is good, uses more in a flexible way, and bonding strength is high, has advantages such as good vertical atress performance after the solidification.

In one embodiment of the invention, the adhesive is an epoxy.

According to the arrangement, the epoxy resin has strong adhesive force, the chemical structure of the epoxy resin contains aliphatic hydroxyl, ether and extremely active epoxy groups, and the hydroxyl and the ether have high polarity, so that the epoxy resin has strong adhesive force, and the epoxy resin can firmly bond concrete, stone and various metal materials; the epoxy resin AB glue can be prepared into glue with different viscosities, the curing degree of the AB glue can be adjusted through normal-temperature curing, heating curing and other modes, and the curing time can be controlled within minutes to hours; in addition, the epoxy resin AB glue has good performance, and the cured epoxy resin AB glue has good performance, high mechanical strength, yellowing resistance, medium resistance, long aging resistance time, good electrical insulation, water resistance and moisture resistance and small volume shrinkage; the epoxy resin AB glue is nontoxic, has no three-waste emission in production, does not bring harm to the environment when in use, and meets the requirement of environmental protection; in addition, the epoxy resin AB glue has wide and easily available sources, low price and low cost.

Referring to fig. 17, fig. 17 is a schematic structural diagram of the prefabricated building structure 100 and the platform 400.

In one embodiment, prefabricated building structure 100 is mated to a cap 400.

In this embodiment, the solid portion 20 of the prefabricated building structure 100 is connected to the cap 400. The ends of the second cage body 40 and the first cage body 30, which are relatively far away from the hollow part 10, are provided with pre-embedded connectors 70, the pre-embedded connectors 70 are fixedly connected with the force transmission rib bodies 410, a plurality of force transmission rib bodies 410 form a stress frame in the bearing platform 400, then concrete is poured into a mold, and the bearing platform 400 is formed after the concrete is dried and formed. In the embodiment, the second cage body 40 and the first cage body 30 are both provided with the embedded connecting pieces 70, so that the reinforcement ratio in the bearing platform 400 can be greatly improved, the bearing capacity of the bearing platform 400 can be improved, the force transmission link is reduced, and the method is safer and more reliable; but also better transfer the forces experienced by the cap 400 to the underlying foundation.

It is understood that in other embodiments, if the bearing platform 400 does not need to have very high bearing capacity, only the second cage 40 or the first cage 30 may be provided with the embedded connector 70 at the end relatively far from the hollow portion 10, and the embedded connector 70 is fixedly connected with the force transmission rib 410.

Referring to fig. 18, fig. 18 is a partially enlarged view of the portion C shown in fig. 17.

In one embodiment, the embedded connector 70 is provided with a through thread, one end of the embedded connector 70 is in threaded connection with the first axial rib 31 or the second axial rib 41, and the other end is in threaded connection with the force transmission rib 410.

Preferably, the force transmitting rib body 410 is a threaded steel.

It is understood that, in other embodiments, the embedded connector 70 may also be another type of steel bar, and the embedded connector 70 may also be fixedly connected to the first axial rib 31, the second axial rib 41, or the force transmission rib 410 by welding, clamping, or the like. Preferably, the embedded connector 70 is provided with an internal thread, the force transmission rib body 410 is provided with an external thread, and the two are connected in a threaded fit manner, so that the connection is simple and convenient, and the time cost during construction is saved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A prefabricated building structure (100), characterized in that the prefabricated building structure (100) comprises a pile body (101) and a pile tip (102); a first cage body (30) and a pre-buried pipe (80) are arranged in the pile body (101), the pre-buried pipe (80) is arranged in the middle of the pile body (101), the interior of the pre-buried pipe (80) is hollow, and the pre-buried pipe (80) is surrounded by the first cage body (30); the pile tip (102) is arranged at the end part of the pile body (101), a reinforcing rib (1020) is arranged in the pile tip (102), and the reinforcing rib (1020) extends into the pile body (101).

2. The prefabricated building structure (100) of claim 1, wherein the end of the pile body (101) near the pile tip (102) extends outwards and forms an insertion block (1011), the end face of the pile tip (102) near the pile body (101) is provided with an insertion groove (1012), and the outer circumference of the insertion block (1011) has a size smaller than or equal to that of the insertion groove (1012); or,

the end part of the pile body (101) close to the pile tip (102) is provided with an insertion groove (1012), the end surface of the pile tip (102) close to the pile body (101) extends outwards to form an insertion block (1011), and the peripheral dimension of the insertion block (1011) is smaller than or equal to the dimension of the insertion groove (1012).

3. The prefabricated building structure (100) of claim 1 wherein the reinforcing bars (1020) comprise a reinforcing portion (1021) and a connecting portion (1022) connected to each other, the reinforcing portion (1021) being disposed within the pile toe (102), the connecting portion (1022) having one end connected to the reinforcing portion (1021) and the other end extending into the pile body (101).

4. Prefabricated building structure (100) according to claim 3, characterized in that said pile body (101) is a square pile and said pile tip (102) is a quadrangular pyramid; the reinforcing part (1021) is in a quadrangular pyramid shape, and the edge of the reinforcing part (1021) corresponds to the edge of the pile tip (102).

5. Prefabricated building structure (100) according to claim 3, characterized in that said first cage (30) is made of prestressed reinforcement; the first cage body (30) comprises a plurality of first axial rib bodies (31), and the first axial rib bodies (31) are arranged along the axial direction of the pile body (101); the pile tip (102) is provided with a first through hole (1023), and the first through hole (1023) is located at the position aligned with the first axial rib body (31).

6. Prefabricated building structure (100) according to claim 5, characterised in that said connecting portion (1022) is in welded or lashed connection with said first axial rib (31).

7. The prefabricated building structure (100) of claim 5, wherein the prefabricated building structure (100) further comprises a pre-buried connector (70), the pre-buried connector (70) is arranged at an end of the first axial rib (31) along the axial direction of the pile body (101), and a thread is arranged on the pre-buried connector (70).

8. The prefabricated building structure (100) of claim 1 wherein a second cage (40) is further disposed within said pile (101), said second cage (40) being disposed at an axial end of said embedded pipe (80), and said second cage (40) being received within said first cage (30).

9. Prefabricated building structure (100) according to claim 8, characterized in that said second cage (40) comprises a second radial rib (42) and a plurality of second axial ribs (41); a plurality of second axial ribs (41) are arranged along the axial direction of the pile body (101); the second axial rib bodies (41) form a frame of the second cage body (40), the second radial rib bodies (42) spirally surround the frame of the second cage body (40), and the second radial rib bodies (42) are fixedly connected with the second axial rib bodies (41).

10. Prefabricated building structure (100) according to claim 1, characterized in that said pile tip (102) comprises a metal tip (1024), said metal tip (1024) being arranged at the end of said pile tip (102) facing away from said pile body (101).