CN111206571A

CN111206571A - Prefabricated building structure

Info

Publication number: CN111206571A
Application number: CN202010130232.4A
Authority: CN
Inventors: 许顺良
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2020-05-29

Abstract

The invention provides a prefabricated building structure which comprises a hollow part and a solid part which are connected with each other, wherein the hollow part is hollow and surrounded to form a core groove, and the solid part is convexly provided with an inserting block at the end part which is relatively far away from the hollow part. When the bearing platform is subsequently poured at the top of the prefabricated building structure, the splicing blocks can increase the binding force between the prefabricated building structure and the bearing platform and improve the integrity between the bearing platform and the prefabricated building structure.

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 shock resistance mechanical property and durability of the hollow structure cannot be guaranteed. Therefore, there is a need for an improved prefabricated building structure that can not only reduce weight and save raw materials, but also ensure its seismic mechanical properties and durability.

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 hollow part and a solid part which are connected with each other, wherein the hollow part is hollow and surrounded to form a core groove, and an insertion block is convexly arranged at the end part of the solid part relatively far away from the hollow part.

The pile body in the prefabricated building structure provided by the invention comprises the hollow part and the solid part, so that the consumption of raw materials is reduced, the weight is reduced, and the manufacturing cost is saved; 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 core slot is used with the opening facing downwards, the prefabricated building structure exerts pressure on the solid part when being buried underground, and the phenomenon that the prefabricated building structure is damaged due to overlarge pressure intensity can be avoided; at this time, the core groove can be sealed by matching with external components such as pile tip and the like to prevent the groundwater from entering. When the core slot is used with the opening facing upwards, the solid part can prevent underground water from entering the interior of the prefabricated building structure, effectively resists the corrosion of the underground water to the interior of the prefabricated building structure, and ensures the durability of the prefabricated building structure without core filling treatment. In addition, when the bearing platform is subsequently poured at the top of the prefabricated building structure, the splicing blocks can increase the binding force between the prefabricated building structure and the bearing platform, and the integrity between the bearing platform and the prefabricated building structure is improved.

In one embodiment of the invention, the end of the core barrel relatively far from the solid part forms an opening, and the size of the periphery of the plug block is smaller than or equal to the size of the opening.

According to the arrangement, the end part of the solid part is convexly provided with the inserting block matched with the opening, and when the two prefabricated building structures are inserted into each other, the inserting block and the opening can be matched with each other to position the two prefabricated building structures; in addition, in the service process of the prefabricated building structure, the matching of the splicing blocks and the openings can prevent the defects of dislocation, inclination and the like between the two prefabricated building structures, and the service life of the prefabricated building structure is prolonged.

In one embodiment of the invention, the height of the insert block in the axial direction of the prefabricated building structure is 1mm to 200 mm.

So set up, can enough guarantee the stability behind plug block and the opening cooperation, can not increase too much cost again.

In one embodiment of the present invention, the prefabricated building structure is a square pile or a tubular pile.

By the arrangement, the industrial production process of the square pile and the tubular pile is mature, the production cost is low, the process is simple, and the application range is wide.

In one embodiment of the present invention, the peripheral wall of the core hole has a cylindrical shape or a columnar shape having a polygonal cross section.

By the arrangement, core slots with different shapes can be designed according to the actual application and the corresponding stress condition of the prefabricated building structure, so that different force bearing effects are achieved.

In one embodiment of the present invention, the prefabricated building structure further comprises a first cage body, the first cage body surrounds the core groove, and the first cage body is disposed in the solid portion and the hollow portion.

So set up, first cage body can increase substantially prefabricated building structure's intensity for prefabricated building structure's application scope is more extensive.

In one embodiment of the present invention, the first cage comprises first axial ribs and first radial ribs, a plurality of the first axial ribs forming a frame of the first cage, the first radial ribs spirally surrounding the frame of the first cage; the first radial rib body is fixedly connected with the first axial rib body.

Due to the arrangement, the first cage body is high in bearing strength and simple to process, and only a plurality of first axial rib bodies are required to be axially transported, and meanwhile, the first radial rib bodies are wound on the frame formed by the first axial rib bodies, so that the working hours are saved; and can increase the number of turns and the encryption length that first radial muscle body spiral was around at the great position of atress degree as required, if increase the number of turns and the encryption length that first radial muscle body spiral was around at the both ends of first cage body, prevent that prefabricated building structure from suffering structural damage too big bearing when burying underground.

In one embodiment of the invention, the prefabricated building structure further comprises a mounting plate disposed in the hollow portion at an end relatively close to the solid portion; the mounting plate is connected to the first axial rib body.

So set up, the mounting panel can prevent that the core print slot from being close to the lateral wall of solid portion relatively on the concrete drops, avoids the second cage body to expose in the air, prevents the corruption of the second cage body, influences the service strength of the second cage body.

In an embodiment of the present invention, the prefabricated building structure further includes a second cage, the second cage is disposed in the solid portion, and the second cage is surrounded by the first cage.

So set up, the second cage body set up the local reinforcement rate that has heightened solid portion department 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 present invention, the second cage includes a second axial rib and a second radial rib, a plurality of the second axial ribs form a frame of the second cage, and the second radial rib spirally surrounds the frame of the second cage; and the second radial rib body is fixedly connected with the second axial rib body.

Due to the arrangement, the second cage body is simple and convenient in processing method and easy to produce, meanwhile, the binding force between the second axial rib body and the second radial rib body is strong, the strength of the cage body is high in the using process, and the cage body is not easy to deform.

In one embodiment of the present invention, the second axial rib extends to the mounting plate, and the second axial rib is fixedly connected with the mounting plate.

So set up, not only can make the second cage body fixed, prevent that the second cage body is out of shape and dislocation at the in-service process, can also share the power that the second axial muscle body bore, increase prefabricated building structure's bearing capacity and wholeness.

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 the use of the pre-buried connector shown in FIG. 1;

FIG. 5 is a schematic view of the use of two prefabricated building structures in abutting joint;

FIG. 6 is a schematic diagram of a quick docking assembly according to one embodiment;

FIG. 7 is a schematic structural view of a quick docking assembly according to another embodiment;

FIG. 8 is a schematic view of a prefabricated building structure and a platform;

fig. 9 is a partially enlarged view of the portion C shown in fig. 8.

Description of the main elements

100. Prefabricating a building structure; 10. a hollow portion; 20. a solid portion; 30. a first cage; 40. a second cage; 11. a core groove; 111. an opening; 21. an insertion block; 50. mounting a plate; 31. a first axial rib body; 32. a first radial rib; 41. a second axial rib; 42. a second radial rib body; 60. a corner protecting sleeve; 70. pre-burying a connecting piece; 311. heading; 71. a constriction; 72. an annular projection; 80. 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; 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 mounted 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 of a prefabricated building structure 100 according to a first embodiment of the present invention; FIG. 2 is a cross-sectional view of prefabricated building structure 100 of FIG. 1 at section A-A; fig. 3 is a cross-sectional view of the prefabricated building structure 100 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 shock resistance mechanical property and durability of the hollow structure cannot be guaranteed. Therefore, there is a need for an improved prefabricated building structure that can not only reduce weight and save raw materials, but also ensure its seismic mechanical properties and durability.

The invention provides a prefabricated building structure 100, which comprises a hollow part 10 and a solid part 20 which are connected with each other, wherein the hollow part 10 is hollow and surrounds to form a core slot 11, and the end part of the solid part 20 relatively far away from the hollow part 10 is convexly provided with an insertion block 21.

The pile body in the prefabricated building structure 100 provided by the invention comprises the hollow part 10 and the solid part 20, so that the consumption of raw materials is reduced, the weight is lightened, and the manufacturing cost is saved; 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 core groove 11 is used with the opening 111 facing downward, the prefabricated building structure 100 applies pressure to the solid part 20 when buried underground, so that the phenomenon that the prefabricated building structure 100 is damaged due to excessive pressure can be avoided; at this time, the core groove 11 can be sealed with external members such as a pile tip to prevent the entry of groundwater. When the core hole 11 is used with the opening 111 facing upward, the solid portion 20 prevents groundwater from entering the interior of the prefabricated construction structure 100, effectively resists corrosion of groundwater to the interior of the prefabricated construction structure 100, and ensures durability of the prefabricated construction structure 100 without a core filling process. In addition, when the cap 400 is subsequently poured on top of the prefabricated building structure 100, the insert blocks 21 can increase the coupling force between the prefabricated building structure 100 and the cap 400, and improve the integrity between the cap 400 and the prefabricated building structure 100.

In one embodiment of the present invention, the core hole 11 forms an opening 111 at an end relatively far from the solid portion 20, and the size of the outer periphery of the insert block 21 is smaller than or equal to the size of the opening 111.

With such an arrangement, the end of the solid part 20 is convexly provided with the insertion block 21 matched with the opening 111, when the two prefabricated building structures 100 are inserted into each other, the insertion block 21 and the opening 111 can be matched with each other to position the two prefabricated building structures 100; in the service process of the prefabricated building structure 100, the matching of the insertion block 21 and the opening 111 can prevent the defects of dislocation, inclination and the like between the two prefabricated building structures 100, and the service life of the prefabricated building structure 100 is prolonged.

Specifically, when the inner peripheral wall of the opening 111 is cylindrical, the insertion block 21 is also cylindrical, and the diameter of the insertion block 21 is smaller than or equal to the diameter of the opening 111; when the opening 111 is polygonal, the insertion block 21 is polygonal corresponding to the opening 111, and the side length of the insertion block 21 is less than or equal to the side length of the opening 111.

In one embodiment of the present invention, the insert block 21 has a height of 1mm to 200mm in the axial direction of the prefabricated building structure 100.

By the arrangement, the stability of the insertion block 21 matched with the opening 111 can be ensured, and excessive cost cannot be increased.

In one embodiment of the present invention, the prefabricated building structure 100 is a square pile or a pipe pile.

In one embodiment of the present invention, the peripheral wall of the core hole 11 has a cylindrical shape or a columnar shape having a polygonal cross section.

By such arrangement, the core slots 11 of different shapes can be designed according to the actual 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 prefabricated building structure 100 further comprises a first cage 30, the first cage 30 surrounds the core hole 11, and the first cage 30 is disposed in the solid portion 20 and the hollow portion 10.

So set up, first cage 30 can increase substantially prefabricated building structure 100's intensity for prefabricated building structure 100's application scope is more extensive.

In one embodiment of the present invention, the first cage 30 comprises first axial ribs 31 and first radial ribs 32, the plurality of first axial ribs 31 forming the framework of the first cage 30, the first radial ribs 32 spirally surrounding the framework of the first cage 30; the first radial rib 32 is fixedly connected with the first axial rib 31.

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.

Specifically, at least one of welding fixation, binding fixation, and snap fixation is provided between the first radial rib 32 and the first axial rib 31.

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, the first cage 30 is made of prestressed steel bars.

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.

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.

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.

In one embodiment of the present invention, the prefabricated building structure 100 further comprises a second cage 40, the second cage 40 being disposed within the solid portion 20, and the first cage 30 enclosing the second cage 40.

With such an arrangement, the arrangement of the second cage body 40 increases the local reinforcement ratio at the solid part 20, so that the longitudinal stress capacity and the anti-shearing force capacity are not lowered or raised relative to the solid pile, and the tensile capacity, the compressive capacity, the seismic capacity and the durability of the prefabricated building structure 100 are improved.

In one embodiment, the prefabricated building structure 100 is a partially hollow square pile. At this time, the prefabricated building structure 100 is substantially rectangular parallelepiped, the hollow portion 10 and the solid portion 20 are also substantially rectangular parallelepiped and made of concrete, and a core groove 11 having a cylindrical peripheral wall is opened in the middle of the hollow portion 10; the second cage 40 and the first cage 30 are both substantially rectangular, the second cage 40 is disposed in the solid portion 20, the first cage 30 is disposed in the hollow portion 10 and the solid portion 20, and the second cage 40 is fitted over the first cage 30.

It is understood that in other embodiments, the prefabricated building structure 100 may also be substantially cylindrical or polygonal (e.g., triangular, pentagonal, hexagonal, octagonal, etc.) cylindrical; the peripheral wall of the core hole 11 may have a polygonal (e.g., triangular, square, rectangular, pentagonal, hexagonal, octagonal, etc.) cylindrical shape.

In one embodiment of the present invention, the second cage 40 extends onto the end of the solid portion 20 relatively far from the hollow portion 10.

With such an arrangement, the end portion of the solid portion 20 relatively far away from the hollow portion 10 can be supported by the second cage 40, so as to prevent the end portion of the solid portion 20 from deforming and falling off during use or service, and the end portion of the solid portion 20 can bear larger pressure when the prefabricated building structure 100 is buried underground, and the prefabricated building structure 100 can be buried underground quickly.

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

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 of the present invention, the second cage 40 comprises second axial ribs 41 and second radial ribs 42, the plurality of second axial ribs 41 forming the framework of the second cage 40, the second radial ribs 42 spirally surrounding the framework of the second cage 40; the second radial rib 42 is fixedly connected with the second axial rib 41.

Due to the arrangement, the second cage body 40 is simple and convenient in processing method and easy to produce, meanwhile, the binding force between the second axial rib body 41 and the second radial rib body 42 is strong, the strength of the cage body is high in the using process, and the cage body is not easy to deform.

Specifically, at least one of welding, binding, and fastening is provided between the second radial rib 42 and the second axial rib 41.

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 of the present invention, the prefabricated building structure 100 further includes a mounting plate 50, the mounting plate 50 being disposed at an end of the hollow part 10 relatively close to the solid part 20; the mounting plate 50 is attached to the first axial rib 31.

So set up, mounting panel 50 can prevent that the core print 11 from being close to the relative concrete on the lateral wall of solid portion 20 and droing, avoids the second cage 40 to expose in the air, prevents the corruption of the second cage 40, influences the use strength of the second cage 40.

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

In one embodiment of the present invention, second axial rib 41 extends to mounting plate 50, and second axial rib 41 is fixedly connected to mounting plate 50.

So set up, not only can make the second cage body 40 fixed, prevent that the second cage body 40 from warping and misplacing at the in-service process, can also share the power that the second axial muscle body 41 bore, increase prefabricated building structure 100's bearing capacity and wholeness.

Specifically, at least one of welding, binding, and fastening is provided between the second axial rib 41 and the mounting plate 50.

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, the prefabricated building structure 100 further includes a pile tip (not shown), the pile tip is provided with a groove matching with the insertion block 21, and the insertion block 21 is matched with the groove, so that the pile tip and the pile body can be quickly positioned, and the construction time is shortened. In addition, the adhesive can be contained in the groove of the pile tip to increase the connection strength between the pile tip and the pile body, and the adhesive can also increase the sealing property between the connection surfaces of the pile body and the pile tip, so that the corrosion prevention guarantee rate is improved.

Referring to fig. 4, fig. 4 is a schematic structural diagram of the embedded connector 70 shown in fig. 1.

In one embodiment of the present invention, the second cage 40 is provided with pre-embedded connectors 70, and the pre-embedded connectors 70 are located at the end of the solid portion 20 relatively far from the hollow portion 10.

So configured, at the time of building construction, the prefabricated building structure 100 is generally required to be spliced with another prefabricated building structure to extend the length of the prefabricated building structure 100, or a cap 400 is poured after reinforcing bars are connected to the top of the prefabricated building structure 100 to bear superstructure. The second cage body 40 is provided with the embedded connecting piece 70, so that the combination rate of the two prefabricated building structures 100 can be increased; 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.

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 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.

Referring to fig. 5, fig. 5 is a schematic view illustrating the butt joint of two prefabricated building structures 100.

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.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a quick docking assembly 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. 7, fig. 7 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, the gap between the insertion block 21 and the opening 111 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; 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. 8, fig. 8 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. 9, fig. 9 is a partially enlarged view of the portion C shown in fig. 8.

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

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that suitable changes and modifications of the above embodiments are within the scope of the claimed invention as long as they are within the spirit and scope of the present invention.

Claims

1. A prefabricated building structure (100) comprising a hollow portion (10) and a solid portion (20) interconnected, the hollow portion (10) being hollow and enclosing to form a core channel (11), the solid portion (20) being provided with a male plug (21) protruding from an end portion thereof relatively distant from the hollow portion (10).

2. Prefabricated building structure (100) according to claim 1, characterised in that the end of said core hole (11) relatively far from said solid portion (20) forms an opening (111), the size of the outer periphery of said splicing block (21) being smaller than or equal to the size of said opening (111).

3. Prefabricated building structure (100) according to claim 1, characterised in that said insert block (21) has a height along the axial direction of said prefabricated building structure (100) of 1mm to 200 mm.

4. The prefabricated building structure (100) of claim 3, wherein said prefabricated building structure (100) is a square pile or a tubular pile; and/or the presence of a catalyst in the reaction mixture,

the peripheral wall of the core groove (11) is cylindrical or cylindrical with a polygonal section.

5. The prefabricated building structure (100) of claim 1, wherein said prefabricated building structure (100) further comprises a first cage (30), said first cage (30) enclosing said core recess (11), and said first cage (30) being disposed within said solid portion (20) and said hollow portion (10).

6. Prefabricated building structure (100) according to claim 1, characterized in that said first cage (30) comprises first axial ribs (31) and first radial ribs (32), a plurality of said first axial ribs (31) forming a frame of said first cage (30), said first radial ribs (32) being screwed around said frame of said first cage (30); the first radial rib body (32) is fixedly connected with the first axial rib body (31).

7. The prefabricated building structure (100) of claim 6, wherein the prefabricated building structure (100) further comprises a mounting plate (50), the mounting plate (50) being disposed in the hollow portion (10) relatively near an end of the solid portion (20); the mounting plate (50) is connected to the first axial rib (31).

8. The prefabricated building structure (100) of claim 7 wherein said prefabricated building structure (100) further comprises a second cage (40), said second cage (40) being disposed within said solid portion (20) and said first cage (30) enclosing said second cage (40).

9. Prefabricated building structure (100) according to claim 8, characterized in that said second cage (40) comprises second axial ribs (41) and second radial ribs (42), a plurality of said second axial ribs (41) forming a frame of said second cage (40), said second radial ribs (42) being spiralled around the frame of said second cage (40); the second radial rib body (42) is fixedly connected with the second axial rib body (41).

10. Prefabricated building structure (100) according to claim 9, characterised in that said second axial tendons (41) extend up to said mounting plate (50) and in that said second axial tendons (41) are fixedly connected to said mounting plate (50).