CN111206573A

CN111206573A - Prefabricated building structure

Info

Publication number: CN111206573A
Application number: CN202010131282.4A
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, a solid part and a pre-buried pipe, wherein the hollow part is hollow and surrounds to form a core groove, and the hollow part is connected with the solid part; the embedded pipe is arranged in the solid part, and one end of the embedded pipe extends to the end part of the solid part deviating from the hollow part. The strength of the solid part is improved due to the arrangement of the embedded pipes, so that the longitudinal stress capacity and the anti-shearing force capacity are not reduced or reversely increased relative to the solid pile, and the tensile capacity, the compression capacity, the shock resistance and the durability of the prefabricated building structure are improved. One end of the embedded pipe extends to the end part of the solid part, so that the bearing capacity of the end part of the solid part is greatly improved, and the concrete at the end part of the solid part is prevented from falling off after being stressed; on the other hand, be convenient for with outside reinforcing bar connection, especially when prefabricated building structure is connected with the cushion cap, the reinforcement rate in the cushion cap can be increased, the intensity of cushion cap is increased.

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, a solid part and a pre-buried pipe, wherein the hollow part is hollow and surrounded to form a core groove, and the hollow part is connected with the solid part; the embedded pipe is arranged in the solid part, and one end of the embedded pipe extends to the end part of the solid part deviating from the hollow part.

The pile body in the prefabricated building structure comprises the solid part and the hollow part, so that the consumption of raw materials is reduced, the weight is reduced, and the manufacturing cost is saved; meanwhile, when the prefabricated building structure is buried underground, the earthquake resistance of the prefabricated building structure can be ensured only by positioning the solid part in a depth area (generally 2-15 meters below the foundation) with the highest earthquake wave occurrence frequency below the foundation, and the reliability of the prefabricated building structure in service is ensured. In addition, the strength of the solid part is improved due to the arrangement of the embedded pipes, so that the longitudinal stress capacity and the anti-shearing force capacity are not lowered or reversely raised relative to the solid pile, and the tensile capacity, the compression capacity, the shock resistance and the durability of the prefabricated building structure are improved. One end of the embedded pipe extends to the end part of the solid part, so that the bearing capacity of the end part of the solid part is greatly improved, and the concrete at the end part of the solid part is prevented from falling off after being stressed; on the other hand, be convenient for with outside reinforcing bar connection, especially when prefabricated building structure is connected with the cushion cap, the reinforcement rate in the cushion cap can be increased, the intensity of cushion cap is increased.

In one embodiment of the present invention, the end of the embedded pipe is hollow for connecting an external reinforcing bar.

By the arrangement, the external steel bars can be conveniently inserted into the end parts of the embedded pipes and fixed by welding, gluing and other methods, the fixing method is simple, the site construction is convenient, and the cost is low.

In one embodiment of the invention, the end of the pre-buried pipe is provided with an internal thread for connecting an external reinforcing bar.

So set up, when outside reinforcing bar has the external screw thread, can carry out threaded connection with the internal thread of embedded pipe end portion rapidly, the connected mode is simple and convenient, and connection back intensity is higher.

In one embodiment of the invention, the embedded pipe is hollow inside, one end of the embedded pipe extends to the end of the solid part away from the hollow part, and the other end of the embedded pipe is communicated with the core groove.

So set up, after buried pipe and core slot intercommunication, can play the effect of drainage. When the precast pile is driven or pressed into the ground, the pore water rapidly boosted in the foundation soil can smoothly permeate into the core groove and the embedded pipe, the water can be discharged out of the ground by the submersible pump, the pore water in the foundation around the pile body can continuously permeate into the cavity of the pile body, when the water surface rises to the position near the ground, the water is discharged, the foundation soil around the pile body can tightly hold the pile body after the water is discharged, and the bonding force between the precast building structure and the foundation soil is improved.

In one embodiment of the present invention, the embedded pipe is disposed along an axial direction of the prefabricated building structure.

According to the arrangement, the device not only can bear the force in the vertical direction well, but also can discharge underground water in a short path, and is simple and convenient to machine and form and easy to produce.

In one embodiment of the invention, the diameter of the pre-buried pipe is 10mm to 100 mm.

So set up, pre-buried pipe can play better supporting role to can reduce the concrete volume with reduce cost.

In one embodiment of the present invention, the prefabricated building structure further comprises a first cage body, the first cage body is arranged in the solid part and the hollow part, the first cage body comprises a first axial rib and a first radial rib, and the first axial rib is arranged along the axial direction of the prefabricated building structure; the first axial rib bodies form a frame of the first cage body, the first radial rib bodies spirally surround the frame of the first cage body, and the first radial rib bodies are fixedly connected with the first axial rib bodies.

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 an embodiment of the present invention, the prefabricated building structure further comprises a second cage body, the second cage body is disposed in the solid portion, the second cage body comprises a second axial rib and a second radial rib, the second axial rib is disposed along an axial direction of the prefabricated building structure; and the second axial ribs form a frame of a 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 second axial ribs.

So set up, the setting of the second cage body has improved the local reinforcement rate of 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 an embodiment of the present invention, the number of the embedded pipes is multiple, and the multiple embedded pipes are respectively distributed between the first cage and the second cage and/or inside the second cage.

So set up, each department in the prefabricated building structure all has the steel construction, and the steel construction is mutually supported with concrete structure, can promote prefabricated building structure's intensity by a wide margin.

In one embodiment of the present invention, the prefabricated building structure further comprises a mounting plate provided on a wall surface of the core hole at an end adjacent to the solid portion, the mounting plate being connected to the embedded pipe.

With the arrangement, the force born by the embedded pipe can be transmitted to the mounting plate and dispersed into the prefabricated building structure; and the mounting panel itself can play the supporting role in prefabricated building structure is inside, prevents that prefabricated building structure warp at the in-service in-process, can also prevent that the core groove concrete on being close to the wall of solid portion relatively drops.

In one embodiment of the present invention, the embedded pipe is hollow, a drain hole is formed in the mounting plate, and the embedded pipe is communicated with the core groove through the drain hole.

So set up, can enough improve prefabricated building structure's intensity through the mounting panel, can not hinder the function of drainage among the prefabricated building structure again.

In one embodiment of the invention, the mounting plate is connected to the first cage.

So set up, in prefabricated building structure's production process, the relative position between mounting panel and the first cage body is fixed, is favorable to improving 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 schematic structural view of the pre-buried pipe shown in FIG. 1;

FIG. 3 is a schematic structural view of a buried pipe according to a second embodiment of the present invention;

FIG. 4 is a schematic structural view of a buried pipe according to a third embodiment of the present invention;

FIG. 5 is a schematic structural view of a buried pipe according to a fourth embodiment of the present invention;

FIG. 6 is a schematic view of a buried pipe in accordance with a fifth embodiment of the present invention;

fig. 7 is a schematic view of a prefabricated building structure according to a sixth embodiment of the present invention;

FIG. 8 is a cross-sectional view of the prefabricated building structure of FIG. 7 taken along section A-A;

FIG. 9 is a cross-sectional view of the prefabricated building structure of FIG. 7 taken at section B-B;

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 a schematic structural diagram of a quick docking assembly in one embodiment;

FIG. 13 is a schematic structural view of a quick docking assembly according to another embodiment;

FIG. 14 is a schematic view of a prefabricated building structure and a cap;

fig. 15 is a partially enlarged view of the portion C shown in fig. 14.

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; 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; 51. a drain hole; 60. a corner protecting sleeve; 70. pre-burying a connecting piece; 80. pre-burying a pipe; 311. heading; 71. a constriction; 72. an annular projection; 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 and 2, fig. 1 is a schematic view illustrating a prefabricated building structure according to a first embodiment of the present invention;

fig. 2 is a schematic structural view of the buried pipe shown in fig. 1.

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.

The invention provides a prefabricated building structure 100, which comprises a hollow part 10, a solid part 20 and a pre-buried pipe 80, wherein the hollow part 10 is hollow and surrounds to form a core slot 11, and the hollow part 10 is connected with the solid part 20; a pre-buried pipe 80 is provided within the solid portion 20, one end of the pre-buried pipe 80 extending to the end of the solid portion 20 facing away from the hollow portion 10.

The pile body in the prefabricated building structure 100 provided by the invention comprises the solid part 20 and the hollow part 10, so that the consumption of raw materials is reduced, the weight is reduced, and the manufacturing cost is saved; meanwhile, when the prefabricated building structure 100 is buried underground, the seismic capacity of the prefabricated building structure 100 can be ensured only by positioning the solid part 20 in a depth area (generally 2 meters to 15 meters below the foundation) with the highest seismic wave occurrence frequency below the foundation, and the reliability of the prefabricated building structure 100 in service is ensured. In addition, the strength of the solid part 20 is improved by the arrangement of the embedded pipe 80, so that the longitudinal stress capacity and the anti-shearing force capacity are not lowered or raised reversely relative to the solid pile, and the tensile capacity, the compression capacity, the shock resistance and the durability of the prefabricated building structure 100 are improved. One end of the embedded pipe 80 extends to the end of the solid portion 20, so that on one hand, the bearing capacity of the end of the solid portion 20 is greatly improved, and the concrete at the end of the solid portion 20 is prevented from falling off after being stressed; on the other hand, the coupling with external reinforcing bars is facilitated, and particularly when the prefabricated building structure 100 is coupled with the cap 400, the reinforcement ratio in the cap 400 can be increased, increasing the strength of the cap 400.

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 embedded pipe 80 is hollow inside, one end of the embedded pipe 80 extends to the end of the solid part 20 away from the hollow part 10, and the other end is communicated with the core slot 11.

With this arrangement, the embedded pipe 80 can perform a drainage function after communicating with the core barrel 11. When the precast pile is driven or pressed into the ground, the pore water rapidly boosted in the foundation soil can smoothly permeate into the core groove 11 and the embedded pipe 80, and under the action of pressure difference, the pore water can gush out, the pore water in the foundation around the pile body can continuously permeate into the cavity of the pile body, when the water level rises to the vicinity of the ground, the water is drained, the foundation soil around the pile body can tightly hold the pile body after the water is drained, and the binding force between the precast building structure 100 and the foundation soil is improved. In addition, the force transfer rib body 410 in the platform 400 can be connected with the embedded pipe 80 by welding, gluing, screwing and the like, so as to increase the reinforcement rate in the platform 400.

In one embodiment of the present invention, the embedded pipe 80 is disposed along an axial direction of the prefabricated building structure 100.

Referring to fig. 2, fig. 2 is a schematic structural view of the buried pipe shown in fig. 1.

In this embodiment, the embedded pipe 80 has a hollow columnar shape. Preferably, in the present embodiment, the embedded pipe 80 has a cylindrical shape. It is understood that the pre-buried pipe 80 may have a square column shape or a column shape with a polygonal cross section, which is not listed here.

In other embodiments, the embedded tube 80 is a hollow tube with an internal thread at the end, which facilitates the threaded connection with the force transmission rib 410.

It is understood that the pre-buried pipe 80 may have other structures in other embodiments. As shown in fig. 3 to 6, fig. 3 is a schematic structural view of a buried pipe according to a second embodiment of the present invention; fig. 4 is a schematic structural diagram of an embedded pipe 80 according to a third embodiment of the present invention; fig. 5 is a schematic structural diagram of an embedded pipe 80 according to a fourth embodiment of the present invention; fig. 6 is a schematic view of a buried pipe 80 according to a fifth embodiment of the present invention.

The embedded pipe 80 shown in fig. 3 is a columnar structure with a hollow end, in this embodiment, only one end of the embedded pipe 80 is hollow, and after the external steel bar can be inserted into the hollow part, the embedded pipe 80 is fixedly connected with the embedded pipe through welding, gluing or threaded connection. Other portions of the pre-buried pipe 80 are solid structures that can withstand greater forces and increase the strength of the prefabricated building structure 100. Preferably, in the present embodiment, the embedded pipe 80 has a cylindrical shape. It is understood that the pre-buried pipe 80 may have a square column shape or a column shape with a polygonal cross section, which is not listed here.

The embedded pipe 80 shown in fig. 4 has a hollow end portion and is provided with an internal thread, and an external reinforcing bar (preferably, a screw steel bar) can be connected to the embedded pipe 80 by means of a screw connection. At this time, the embedded pipe can be a hollow structure, and only the end part of the embedded pipe can be a hollow structure as long as the embedded pipe can be connected with the external reinforcing steel bar in a threaded mode. Preferably, in the present embodiment, the outer peripheral wall of the embedded pipe 80 is cylindrical. It is understood that the outer peripheral wall of the embedded pipe 80 may be a square column or a column having a polygonal cross section, and the inner peripheral wall may be a cylinder.

The embedded pipe 80 shown in fig. 5 is a corrugated pipe, and the corrugated structure in the corrugated pipe can enable the embedded pipe to be better combined with a concrete structure, so that the problems of displacement and the like of the embedded pipe 80 in the service process are avoided. It is to be understood that the invention is not limited to the shape of the interior of the bellows; the corrugated pipe can be hollow, can also be solid, and can also be hollow only at the end part; the hollow part in the corrugated pipe can be cylindrical, polygonal column, or corrugated column; as long as the outer wall is of a corrugated structure, the concrete can be better combined with the outer wall.

The embedded pipe 80 shown in fig. 6 is a corrugated pipe with threads on the top, the inner wall of the threaded part is cylindrical, and other structures are substantially the same as those of the embedded pipe 80 shown in fig. 7, which is not repeated herein.

Referring to fig. 7 to 9 together, fig. 7 is a schematic view illustrating a prefabricated building structure according to a sixth embodiment of the present invention; FIG. 8 is a cross-sectional view of the prefabricated building structure of FIG. 7 taken along section A-A; fig. 9 is a sectional view of the prefabricated building structure shown in fig. 7, taken along section B-B.

In one embodiment of the present invention, the prefabricated building structure 100 further comprises a first cage 30, the first cage 30 being disposed inside the solid portion 20 and the hollow portion 10, the first cage 30 comprising a first axial rib 31 and a first radial rib 32, the first axial rib 31 being disposed along an axial direction of the prefabricated building structure 100; the first axial ribs 31 form a framework of the first cage 30, the first radial ribs 32 spirally surround the framework of the first cage 30, and the first radial ribs 32 are fixedly connected with the first axial ribs 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.

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.

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.

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 of the present invention, the prefabricated building structure 100 further comprises a second cage 40, the second cage 40 being arranged inside the solid portion 20, the second cage 40 comprising second axial ribs 41 and second radial ribs 42, the second axial ribs 41 being arranged along the axial direction of the prefabricated building structure 100; the second axial ribs 41 form a framework of the second cage 40, the second radial ribs 42 spirally surround the framework of the second cage 40, and the second radial ribs 42 are fixedly connected with the second axial ribs 41.

With such an arrangement, the arrangement of the second cage body 40 improves 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, 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.

It is understood that the first cage 30 and the second cage 40 may be provided simultaneously or alternatively.

In an embodiment of the present invention, the number of the embedded pipes 80 is multiple, and the multiple embedded pipes 80 are respectively distributed between the first cage 30 and the second cage 40 and/or inside the second cage 40.

So set up, all have the steel construction everywhere in prefabricated building structure 100, the steel construction is mutually supported with concrete structure, can promote prefabricated building structure 100's intensity by a wide margin.

In one embodiment of the present invention, the prefabricated building structure 100 further includes a mounting plate 50, the mounting plate 50 being disposed on a wall surface of the core pit 11 near one end of the solid portion 20, the mounting plate 50 being connected to the embedded pipe 80.

So arranged, the forces experienced by the pre-buried pipe 80 can be transferred to the mounting plate 50 and distributed into the prefabricated building structure 100; and the mounting plate 50 itself can play a supporting role inside the prefabricated building structure 100, prevent the prefabricated building structure 100 from being deformed during service, and also prevent the concrete on the wall surface of the core pit 11 relatively close to the solid part 20 from falling off.

In one embodiment of the present invention, the embedded pipe 80 is hollow, the mounting plate 50 is provided with a drainage hole 51, and the embedded pipe 80 is communicated with the core barrel 11 through the drainage hole 51.

So set up, can enough improve the intensity of prefabricated building structure 100 through mounting panel 50, can not hinder the function of drainage in prefabricated building structure 100 again.

It is understood that the plurality of pre-buried pipes 80 may be all connected to the mounting plate 50, or may be partially connected to the mounting plate 50; may be entirely communicated with the core barrel 11 or partially communicated with the core barrel 11.

In one embodiment of the present invention, a mounting plate 50 is attached to the first cage 30.

So set up, in prefabricated building structure 100's production process, the relative position between mounting panel 50 and the first cage 30 is fixed, is favorable to improving prefabricated building structure 100's load-carrying capacity and wholeness.

In one embodiment of the present invention, the second cage 40 extends to the mounting plate 50 and is 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 core print 11 from being close to the lateral wall of solid portion 20 relatively on the concrete drops, avoids the second cage body 40 to expose in the air, prevents the corruption of the second cage body 40, influences the use 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.

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.

Referring to fig. 10, fig. 10 is a schematic structural diagram of the embedded connector 70 shown in fig. 1.

In one embodiment of the present invention, the first and/or

second cage

30, 40 is provided with an embedded connector 70, and the embedded connector 70 is located at an 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. 11, fig. 11 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. 12, fig. 12 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. 13, fig. 13 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. 14, fig. 14 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 ends of the pre-buried pipes 80 are connected to the force transfer rib 410.

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), a solid portion (20) and a pre-buried pipe (80), the hollow portion (10) being internally hollow and enclosing a core slot (11), the hollow portion (10) being connected to the solid portion (20);

the embedded pipe (80) is arranged in the solid part (20), and one end of the embedded pipe (80) extends to the end part of the solid part (20) departing from the hollow part (10).

2. Prefabricated building structure (100) according to claim 1, characterised in that the ends of said pre-buried pipes (80) are hollow for the connection of external reinforcing bars.

3. Prefabricated building structure (100) according to claim 2, characterized in that the ends of said pre-buried pipes (80) are provided with internal threads for the connection of external reinforcing bars.

4. Prefabricated building structure (100) according to claim 1, characterised in that said pre-buried pipe (80) is internally hollow, one end of said pre-buried pipe (80) extending to the end of said solid portion (20) facing away from said hollow portion (10) and the other end communicating with said core recess (11).

5. The prefabricated building structure (100) of claim 1 wherein said pre-buried pipe (80) is arranged in an axial direction of said prefabricated building structure (100); and/or the presence of a catalyst in the reaction mixture,

the diameter of the embedded pipe (80) is 10mm to 100 mm.

6. The prefabricated building structure (100) of claim 1, said prefabricated building structure (100) further comprising a first cage body (30), said first cage body (30) being arranged inside said solid portion (20) and said hollow portion (10), said first cage body (30) comprising first axial ribs (31) and first radial ribs (32), said first axial ribs (31) being arranged along an axial direction of said prefabricated building structure (100); the first axial rib bodies (31) form a framework of the first cage body (30), the first radial rib bodies (32) spirally surround the framework of the first cage body (30), and the first radial rib bodies (32) are fixedly connected with the first axial rib bodies (31).

7. The prefabricated building structure (100) of claim 6, said prefabricated building structure (100) further comprising a second cage (40), said second cage (40) being arranged inside said solid portion (20), said second cage (40) comprising second axial ribs (41) and second radial ribs (42), said second axial ribs (41) being arranged along an axial direction of said prefabricated building structure (100); 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).

8. Prefabricated building structure (100) according to claim 7, characterized in that said pre-buried pipes (80) are a plurality of said pre-buried pipes (80) distributed between said first cage (30) and said second cage (40) and/or inside said second cage (40), respectively.

9. The prefabricated building structure (100) of claim 1, wherein said prefabricated building structure (100) further comprises a mounting plate (50), said mounting plate (50) being disposed on a wall surface of said core hole (11) near an end of said solid portion (20), said mounting plate (50) being connected to said pre-buried pipe (80).

10. The prefabricated building structure (100) of claim 9, wherein the interior of the embedded pipe (80) is hollow, a drainage hole (51) is formed in the mounting plate (50), and the embedded pipe (80) is communicated with the core groove (11) through the drainage hole (51); and/or the presence of a catalyst in the reaction mixture,

the mounting plate (50) is connected to the first cage (30).