CN212452593U - Prefabricated building structure - Google Patents

Abstract

The utility model provides a prefabricated building structure, including hollow portion, solid portion, the first cage body and the second cage body, hollow portion connects in solid portion and the inside of hollow portion and has seted up the core slot, and the first cage body sets up in solid portion, and the second cage body sets up in solid portion and hollow portion and encloses and establish the first cage body. The utility model provides a prefabricated building structure includes solid portion and hollow portion to set up the first cage body in solid portion, improved the local arrangement of reinforcement rate of solid portion department. Therefore, the prefabricated building structure provided by the utility model not only reduces the consumption of raw materials, reduces the weight and saves the manufacturing cost; and the longitudinal stress capacity and the anti-shearing capacity are not reduced and reversely increased due to the arrangement of the first cage body, so that the tensile capacity, the compressive capacity and the seismic capacity of the prefabricated building structure are improved.

Description

Prefabricated building structure

Technical Field

The utility model relates to a building technical field especially relates to a prefabricated building structure.

Background

In the field of building technology, it is common to make prefabricated building structures in a factory and then transport the prefabricated building structures to a construction site for use to reduce construction time. In order to facilitate the smooth burying of the prefabricated building structure in the soil layer, a pile tip is usually provided at the end of the prefabricated building structure. Among the present prefabricated building structure, for the reinforcing bar in the prefabricated building structure of convenience of stretch-draw, the stake point is mostly detachably to be installed on the pile body. However, the detachable pile tip not only takes long time and is difficult to operate, but also has poor bearing capacity, force transmission capacity and penetration capacity, so that the problems of deformation, dislocation and the like of the pile tip often occur in actual use, and the pile body is broken due to uneven stress in serious cases, thereby delaying the working hours.

SUMMERY OF THE UTILITY MODEL

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

The utility model provides a prefabricated building structure, which comprises a pile body, a pile tip and a first cage body, wherein the pile tip is positioned at the end part of the pile body, the first cage body is arranged in the pile body, and the first cage body is made of prestressed steel bars; the first cage body comprises a plurality of first axial rib bodies, and the first axial rib bodies are arranged along the axial direction of the pile body; a first through hole is formed in the pile tip and is located at a position aligned with the first axial rib body.

The utility model provides a stake point makes prefabricated building structure the penetrability on soil layer increase when sinking construction right, can play the guide effect, can also reduce prefabricated building structure and appear the disconnected probability of bursting. The tensioning machine can directly tension the prefabricated building structure containing the pile tip, and the bearing capacity of the prefabricated building structure is improved. The tensioning machine can penetrate through the first through hole to be connected with the first axial rib body and applies prestress to the first axial rib body; the tensioning machine and the first axial rib body are connected simply and conveniently, so that the construction time can be shortened, and the construction cost can be reduced.

In an embodiment of the present invention, the pile body and the pile tip are integrally formed.

So set up, stake body and stake point integrated into one piece have improved prefabricated building structure's wholeness, have improved the power transmission capacity and the soil layer penetrability of stake point, prevent that prefabricated building structure stake point atress warp when burying the soil layer to prefabricated building structure's reliability in service has been guaranteed.

In an embodiment of the present invention, the first through hole has a filling plug therein, and the filling plug is used for filling and sealing the first through hole.

So set up, can prevent that prefabricated building structure from being in active service in-process, during groundwater or other underground impurity got into the stake body from first through-hole, prevented first cage body by the corruption, prolonged prefabricated building structure's life.

In an embodiment of the present invention, said first cage further comprises first radial ribs; 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 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 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 first radial rib and the first axial rib are fixed by spot welding.

So set up, the relative position of first radial muscle body and first axial muscle body can comparatively be confirmed, has guaranteed that first steel reinforcement cage is comparatively balanced at everywhere atress to can transmit first axial muscle body and the power that first radial muscle body bore each other, exert its biggest bearing capacity with guaranteeing first cage body.

In one embodiment of the present invention, the first axial rib 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 steel strand, a prestressed twisted steel; and/or the presence of a catalyst in the reaction mixture,

the first radial rib body is made of at least one of a steel bar for prestressed concrete, a stainless steel bar, a hot rolled steel bar, a medium-strength prestressed wire, a stress-relieving steel wire, a steel strand and a prestressed twisted steel.

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

In an embodiment of the present invention, the first axial rib is relatively close to the end of the pile toe and is provided with a pre-embedded connector.

So set up, the tensioning machine can be through the pre-buried connecting piece first axial muscle body of connecting, and the setting of pre-buried connecting piece can simplify the connection step between tensioning machine and the first axial muscle body, has saved the required length of stretch-draw.

In an embodiment of the present invention, the pre-embedded connecting member is provided with a thread.

So set up, when first cage body and stretch-draw machine pass through outside billet to be connected, outside billet can be connected with pre-buried connecting piece fast through the screw thread, and connected mode is simple, and the junction reliability is high.

In an embodiment of the present invention, the first axial rib is relatively far away from the end of the pile toe and is provided with a pre-embedded connector.

This arrangement facilitates the connection of the prefabricated building structure to other structures, for example to another prefabricated building structure, or to a cap.

The utility model discloses an embodiment, the stake body is one of solid square pile, hollow square pile, tubular pile, local hollow square pile, local hollow tubular pile.

According to the arrangement, the utility model provides a stake point can cooperate with multiple current stake shape, and the commonality is better.

Drawings

FIG. 1 is a schematic view of a prefabricated building structure according to an 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 structural view of a quick connect assembly of the first embodiment;

FIG. 7 is a schematic structural view of a quick docking assembly according to a second 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.

100. Prefabricating a building structure; 101. a pile body; 102. pile tip; 1021. a first through hole; 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; 60. a corner protecting sleeve; 70. pre-burying a connecting piece; 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 described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. As used herein, the term "and/or" 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, fig. 1 is a schematic view of a prefabricated building structure according to an embodiment of the present invention.

The utility model provides a prefabricated building structure 100 is applied to the foundation building among the building technology field. 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.

The utility model provides a prefabricated building structure 100 includes stake body 101, stake point 102 and first cage 30, stake point 102 is located the tip of stake body 101, first cage 30 sets up in the inside of stake body 101 and first cage 30 is made by prestressing steel; the first cage 30 comprises a plurality of first axial ribs 31, and the first axial ribs 31 are arranged along the axial direction of the pile body 101; the pile tip 102 is provided with a first through hole, and the first through hole is located at a position aligned with the first axial rib body 31.

The utility model provides a stake point 102 makes prefabricated building structure 100 increase when sinking the penetrability on soil layer when being under construction right, can play the guide effect, can also reduce prefabricated building structure 100 and appear the probability of bursting absolutely. The tensioning machine can directly tension the prefabricated building structure 100 containing the pile tip 102, and the bearing capacity of the prefabricated building structure 100 is improved. The stretching machine can penetrate through the first through hole to be connected with the first axial rib body 31 and applies prestress to the first axial rib body 31; the tensioning machine and the first axial rib body 31 are connected simply and conveniently, so that the construction time can be shortened, and the construction cost can be reduced.

In an embodiment of the present invention, the pile body 101 and the pile tip 102 are integrally formed.

So set up, stake body 101 and stake point 102 integrated into one piece for the concrete of stake body 101 and stake point 102 combines together, has improved the wholeness of prefabricated building structure 100 and the power transmission capacity and the soil layer penetrating power of stake point 102, prevents that prefabricated building structure 100 from the stake point 102 atress deformation when burying the soil layer, thereby has guaranteed the reliability of prefabricated building structure 100 in service.

In an embodiment of the present invention, the first through hole has a filling plug therein, and the filling plug is used for filling and sealing the first through hole.

By the arrangement, underground water or other underground impurities can be prevented from entering the pile body 101 from the first through hole in the service process of the prefabricated building structure 100, the first cage body 30 is prevented from being corroded, and the service life of the prefabricated building structure 100 is prolonged.

The utility model discloses an embodiment, stake body 101 is one of solid square pile, hollow square pile, tubular pile, local hollow square pile, local hollow tubular pile, special-shaped pile.

So configured, the utility model provides a stake point 102 can cooperate with multiple current pile shape, and the commonality is better.

In one embodiment of the present invention, the pile body 101 is a polygonal pile.

So set up, stake body 101 is applicable to multiple operating mode, and the flexibility is high, can design the shape of precast pile according to the operating mode needs.

In one embodiment of the present invention, the cross section of the circumferential wall of the core hole 11 in the radial direction thereof is polygonal and matches the shape of the precast pile structure.

With this arrangement, the shape of the first cage 30 matches the shape of the prefabricated building structure 100, so that the combination between the concrete and the first cage 30 can be further increased, and the falling off of the peripheral concrete and the concrete on the peripheral wall of the core hole 11 can be prevented.

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.

Referring to fig. 2 and 3 together, fig. 2 is a cross-sectional view of the prefabricated building structure shown in fig. 1, taken along a-a section; fig. 3 is a cross-sectional view of the prefabricated building structure shown in fig. 1, taken along section B-B.

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, said first cage 30 further comprises first radial ribs 32; 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.

In an embodiment of the present invention, the first radial rib 32 and the first axial rib 31 are fixed by spot welding.

So set up, the relative position of first radial muscle body 32 and first axial muscle body 31 can comparatively be confirmed, has guaranteed that first steel reinforcement cage is comparatively balanced in atress everywhere to can transmit the power that first axial muscle body 31 and first radial muscle body 32 bore each other, exert its biggest bearing capacity with guaranteeing first cage 30.

It is understood that, in other embodiments, the first radial rib 32 and the first axial rib 31 may be fixed by snapping, binding, etc., which are not listed here.

In an embodiment of the present invention, the first axial rib 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, a stainless steel bar, a hot-rolled steel bar, a medium-strength prestressed wire, a stress-relieving steel wire, a steel strand, a prestressed twisted steel, a low-carbon steel hot-rolled disc strip, and a cold-drawn low-carbon steel wire for a concrete product.

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

In one embodiment, the pile body 101 includes a hollow portion 10 and a solid portion 20, the hollow portion 10 is connected to the solid portion 20, a core slot 11 is opened in the hollow portion 10, and the first cage 30 is disposed in the solid portion 20 and the hollow portion 10.

With the arrangement, the prefabricated building structure 100 comprises the hollow part 10 and the solid part 20, so that the consumption of raw materials is reduced, the weight is reduced, 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. Meanwhile, in addition, when the core groove 11 is used with its opening facing downward, the prefabricated construction structure 100 applies pressure to the solid portion 20 when buried in the ground, and a phenomenon in which the prefabricated construction structure 100 is damaged due to excessive pressure can be avoided. When the core groove 11 is blocked by an external member such as a pile tip or the like or the opening of the core groove 11 is upward for use, groundwater can be prevented from entering the interior of the prefabricated building structure 100, the corrosion of groundwater to the interior of the prefabricated building structure 100 is effectively resisted, and the durability of the prefabricated building structure 100 is ensured without core filling treatment.

Specifically, 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 in shape.

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.

Preferably, in one embodiment, the pile body 101 is a square pile, and the cross section of the peripheral wall of the core barrel 11 in the radial direction thereof is also square.

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 barrel 11 may have a cylindrical shape or 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 to 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.

It is understood that in other embodiments, the second cage 40 may be located inside the solid portion 20 to prevent the second cage 40 from being exposed to air and corroding.

In one embodiment of the present invention, the outer edge of the cross-section of the second cage 40 is circular or polygonal in shape. The polygons are triangles, squares/rectangles, pentagons, hexagons, 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 deformed 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 an embodiment of the present invention, the second cage 40 includes a second axial rib 41 and a second radial rib 42, the second axial ribs 41 form a frame of the second cage 40, and the second radial rib 42 spirally surrounds the frame of the second cage 40; the second radial rib 42 and the second axial rib 41 are fixed by spot welding.

With the arrangement, the second cage body 40 and the first cage body 30 are simple and convenient in processing method and easy to produce, and meanwhile, the binding force between the axial rib bodies and the radial rib bodies is strong, so that the cage body is high in strength and not easy to deform in the using process.

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 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 an embodiment of the present invention, the prefabricated building structure 100 further includes a mounting plate 50, the mounting plate 50 is disposed on the wall surface of the core chase 11 near one end of the solid portion 20, and 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 an 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 made of stainless 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 200 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 170 mm.

Referring to fig. 4, fig. 5 is a schematic structural diagram of the embedded connector 70 shown in fig. 4.

In an embodiment of the present invention, the end of the first axial rib 31 relatively close to the pile tip 102 is provided with a pre-embedded connector 70.

So set up, the tensioning machine can be through pre-buried connecting piece 70 connection first axial muscle body 31, and pre-buried connecting piece 70's setting can simplify the step of being connected between tensioning machine and the first axial muscle body 31, has saved the required length of time of stretch-draw.

In an embodiment of the present invention, the end of the first axial rib 31 relatively far away from the pile tip 102 is provided with a pre-embedded connector 70.

This arrangement facilitates the connection of prefabricated building structure 100 to other structures, such as another prefabricated building structure 100 or to a cap 400.

In an embodiment of the present invention, the second cage 40 is provided with a pre-embedded connector 70, and the pre-embedded connector 70 is located at an end of the solid portion 20 relatively far away 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 peripheral wall relatively close to 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.

Preferably, a steel bar for prestressed concrete (PC steel bar) is used for both the second cage 40 and the first cage 30. The PC steel bar has the advantages of high strength and toughness, low looseness, strong bond force with concrete, good weldability and upsetting property, material saving and the like.

It is understood that in other embodiments, other types of steel bars may be used for the second cage 40 and the first cage 30, such as stainless steel bars, hot rolled steel bars, medium strength pre-stressed wires, stress-relieved wires, steel strands, pre-stressed threaded steel bars, and the like.

In one embodiment of the present invention, the pre-buried 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 connection is completed through the upset 311.

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 connection 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 use process of the quick docking assembly 200 is as follows: the first plug 210 is connected with the embedded connector 70 in one prefabricated building structure 100 through a first fixing part 211, and the first base 220 is connected with the embedded connector 70 in the other prefabricated building structure 100 through a second fixing part 221; extending the first inserting-connecting part 212 and the first extending part 213 of the first inserting stage 210 into the inner wall of the first base 220 and moving along the inserting direction α, wherein the first inserting-connecting part 212 of the first inserting stage 210 applies pressure to the fin 222, so that the fin 222 elastically expands until the first inserting-connecting part 212 passes through the fin 222; when the first socket 210 is applied with a force in the direction opposite to the insertion direction α, the end of the fin 222 abuts against the first step surface 214 between the first socket 212 and the first extension 213 to limit the first socket 210.

After the first inserting portion 212 of the first inserting table 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 inserting table 210, and the abutting surface between the end portion of the fin 222 and the first step surface 214 of the first inserting table 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 tensile 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 abut 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 tensile strength 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 can be, but is not limited to, the above-mentioned directions, and even partial angular offsets should be included in 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 present invention, the adhesive layer 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 present invention, the adhesive is a two-liquid hybrid hardened glue (AB glue).

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 compressive property after the solidification.

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

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. Because in this embodiment, all be provided with embedded connecting piece 70 on second cage 40 and the first cage 30, can improve the arrangement of reinforcement rate in the cushion cap 400 by a wide margin, not only can improve the bearing capacity of cushion cap 400, can also transmit the power that cushion cap 400 bore to the ground below better.

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 an embodiment of the present invention, the pre-embedded connector 70 is provided with a thread.

So set up, when first cage 30 passes through external reinforcement with the stretch-draw machine and is connected, external reinforcement passes through the screw thread can be connected with pre-buried connecting piece 70 fast, and connected mode is simple, and the junction reliability is high.

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.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself. It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.

Claims (10)

1. A prefabricated building structure (100) comprising a pile body (101), a pile tip (102) and a first cage (30), said pile tip (102) being located at an end of said pile body (101), said first cage (30) being arranged inside said pile body (101) and said first cage (30) being made of prestressed reinforcement; the first cage body (30) comprises a plurality of first axial rib bodies (31), and the first axial rib bodies (31) are arranged along the axial direction of the pile body (101); the pile tip (102) is provided with a first through hole (1021), and the first through hole (1021) is positioned at the position aligned with the first axial rib body (31).

2. A prefabricated building structure (100) according to claim 1, wherein said pile body (101) is integrally formed with said pile tip (102).

3. A prefabricated building structure (100) according to claim 1, wherein said first through hole (1021) has a filling plug therein for filling and sealing said first through hole (1021).

4. A prefabricated building structure (100) according to claim 1, wherein said first cage (30) further comprises first radial ribs (32); 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).

5. Prefabricated building structure (100) according to claim 4, characterised in that said first radial rib (32) is fixed to said first axial rib (31) by spot welding.

6. Prefabricated building structure (100) according to claim 4, wherein said first axial reinforcement (31) is made of at least one of a steel bar for prestressed concrete, a prestressed threaded steel bar; and/or the presence of a catalyst in the reaction mixture,

the first radial rib body (32) is made of at least one of a steel bar for prestressed concrete, a prestressed twisted steel bar, a low-carbon steel hot-rolled disc strip and a cold-drawn low-carbon steel wire for a concrete product.

7. Prefabricated building structure (100) according to claim 1, characterised in that the end of said first axial tendon (31) relatively close to said pile tip (102) is provided with a pre-embedded connector (70).

8. The prefabricated building structure (100) of claim 7 wherein said pre-buried connector (70) is threaded.

9. Prefabricated building structure (100) according to claim 1, characterised in that the end of said first axial tendon (31) relatively far from said pile tip (102) is provided with a pre-embedded connector (70).

10. A prefabricated building structure (100) according to claim 1, wherein said pile body (101) is one of a solid square pile, a hollow square pile, a pipe pile, a partially hollow square pile, a partially hollow pipe pile.

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