CN216194672U - Mixed reinforcement precast pile - Google Patents
Mixed reinforcement precast pile Download PDFInfo
- Publication number
- CN216194672U CN216194672U CN202122488221.6U CN202122488221U CN216194672U CN 216194672 U CN216194672 U CN 216194672U CN 202122488221 U CN202122488221 U CN 202122488221U CN 216194672 U CN216194672 U CN 216194672U
- Authority
- CN
- China
- Prior art keywords
- pile
- reinforcement
- anchoring plate
- prestressed reinforcement
- prestressed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model provides a mixed reinforcement precast pile, which comprises a concrete pile body and a pile end anchoring plate, wherein the pile end anchoring plate is fixedly connected with the concrete pile body; prestressed reinforcements, non-prestressed reinforcements and spiral stirrups are arranged in the concrete pile body; the spiral stirrup is wound outside the prestressed reinforcement and the non-prestressed reinforcement to form a reinforcement cage, and the prestressed reinforcement, the non-prestressed reinforcement and the spiral stirrup are wrapped by concrete; the pile-end anchoring plate is at least arranged at one end of the concrete pile body, and the end part of the prestressed reinforcement is connected with the pile-end anchoring plate; at least one end of the non-prestressed reinforcement is provided with a connecting piece; the non-prestressed reinforcement is anchored with the concrete or connected with the pile end anchoring plate through the connecting piece. The utility model reduces the deformation of the end part of the pile in the horizontal bearing capacity, improves the rigidity of the end part, has the characteristics of simple structure, high pulling resistance and horizontal bearing capacity, low manufacturing cost, high construction efficiency and the like, and can effectively improve the displacement ductility of the pile body and the quality of the connection between the pile and the pile.
Description
Technical Field
The utility model belongs to the technical field of building pile foundation engineering, and particularly relates to a mixed reinforcement precast pile.
Background
The method is currently used for raising higher requirements on the performance of building foundations along with the improvement of the importance degree of modern buildings and the continuous increase of the building height. In areas with higher requirements for earthquake fortification, the building foundation not only meets the requirements of vertical compressive load, but also meets the requirements for earthquake fortification, and the requirements for earthquake resistance of a pile body are higher in engineering with large horizontal bearing capacity such as foundation pit support, side slope enclosure, stand columns and the like. This requires that the piles in the building foundation meet the requirements of vertical compression resistance and earthquake resistance at the same time. Although the cast-in-place concrete precast pile can meet the requirements at the same time through calculation and design, the cast-in-place concrete has great pollution to the environment, and the construction can be continued after one month after the cast is finished for a long construction period, so that the construction cost is high. When the influence of horizontal bearing capacity factors is not considered, the prestressed high-strength concrete centrifugal pile prefabricated in a factory has high vertical bearing capacity, short construction period, convenient manufacture and transportation and lower cost, is more suitable for bearing vertical bearing engineering, but has the defects of poor displacement ductility and the like, and is not suitable for bearing engineering with larger horizontal load.
SUMMERY OF THE UTILITY MODEL
In view of the above technical problems, an object of the present invention is to provide a hybrid reinforcement precast pile, which reduces the deformation of the end of the pile in horizontal bearing capacity, improves the rigidity of the end, has the characteristics of simple structure, high pulling resistance and horizontal bearing capacity, low cost, high construction efficiency, and the like, and can effectively improve the displacement ductility of the pile body and the quality of the connection between the pile and the pile.
The technical scheme of the utility model is as follows: a mixed reinforcement precast pile comprises a concrete pile body and a pile end anchoring plate; prestressed reinforcements, non-prestressed reinforcements and spiral stirrups are arranged in the concrete pile body; the spiral stirrup is wound outside the prestressed reinforcement and the non-prestressed reinforcement to form a reinforcement cage, and the prestressed reinforcement, the non-prestressed reinforcement and the spiral stirrup are wrapped by concrete; the pile-end anchoring plate is at least arranged at one end of the concrete pile body, and the end part of the prestressed reinforcement is connected with the pile-end anchoring plate; at least one end of the non-prestressed reinforcement is provided with a connecting piece; the non-prestressed reinforcement is anchored with the concrete or connected with the pile end anchoring plate through the connecting piece.
In the scheme, the connecting piece is a non-prestressed reinforcement anchoring plate; the non-prestressed reinforcement anchoring plate is wrapped by concrete, and the non-prestressed reinforcement is anchored with the concrete through the non-prestressed reinforcement anchoring plate.
In the above scheme, the connecting piece is a connecting conversion piece; one end of the connection conversion piece is connected with the non-prestressed reinforcement, and the other end of the connection conversion piece is connected with the pile end anchoring plate.
Further, the connection conversion piece comprises a connecting rod, a connecting cylinder and a connecting cylinder; one end of the connecting rod is connected with the pile end anchoring plate, the other end of the connecting rod is axially and slidably connected with one end of the connecting cylinder, the other end of the connecting cylinder is connected with one end of the connecting cylinder, and the other end of the connecting cylinder is connected with the end of the non-prestressed reinforcement.
Furthermore, one end of the connecting cylinder is provided with a first sliding part, the other end of the connecting cylinder is provided with a second clamping table, one end of the connecting cylinder is provided with a second sliding part, and the other end of the connecting cylinder is provided with an elastic reverse buckle; first sliding part and second sliding part sliding connection, after non-prestressed reinforcement stretch-draw, the second ka tai can block in the elasticity back-off.
In the scheme, the pile sleeve is further comprised; the pile hoops are at least arranged on the outer surface of concrete at one end of the concrete pile body and connected with the clamping grooves of the pile end anchoring plates.
Furthermore, shear nails are arranged inside the pile hoops or the inner sides of the pile hoops are arranged in a wavy shape.
In the scheme, the pile-end anchoring plate is provided with the abutted seams, and the pile-end anchoring plate is connected into a whole at the abutted seams.
In the scheme, the inner circle of the pile-end anchoring plate is uniformly provided with a plurality of clamping teeth facing the center of the pile-end anchoring plate.
In the scheme, the prestressed reinforcement comprises a reinforcement body and an upsetting cap; at least one end of the steel bar main body is provided with an upsetting cap, and the upsetting cap penetrates through the end face of the steel bar main body and is located in a prestressed steel bar anchoring hole of the pile end anchoring plate.
Furthermore, a plurality of continuous spiral grooves are uniformly distributed on the outer surfaces of the steel bar main body and the upsetting cap in the circumferential direction, and the spiral angle beta of each spiral groove is 35-60 degrees.
In the scheme, the top of the upsetting cap is provided with the boss.
In the scheme, the upsetting cap is divided into the upper convex part and the lower concave part at the maximum diameter part, the lower concave part is connected with the steel bar main body, and the ratio of the height of the upper convex part to the height of the lower concave part is 1/8-1/2.
In the above scheme, the pile end anchoring plate is provided with a first clamping table, and the first clamping table of the pile end anchoring plate is used for being in butt joint with the clamping table of the connecting clamp.
Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the connecting piece is arranged at the end part of the non-prestressed reinforcement, the non-prestressed reinforcement is anchored with the concrete or connected with the pile end anchoring plate through the connecting piece, the connecting piece is the non-prestressed reinforcement anchoring plate or the connection conversion piece, when the connecting piece is the non-prestressed reinforcement anchoring plate, the anchoring force of the deformed steel bar and the concrete can be increased, the deformation of the end part of the pile in the horizontal bearing capacity is reduced, the rigidity of the end part is improved, the length of the pile casing hoop is reduced, and the cost is saved. When the connecting piece is a connecting conversion piece, the non-prestressed reinforcement is connected with the pile end anchoring plate through the connecting conversion piece, after the prestressed reinforcement is tensioned, the non-prestressed reinforcement, the prestressed reinforcement and the pile end anchoring plate are connected into a whole, and the performance of the pile end is enhanced. The pile end anchoring plate is connected with the non-prestressed reinforcement, so that the prestressed reinforcement and the non-prestressed reinforcement are anchored on the pile end anchoring plate, and the pile end anchoring plate has the characteristics of simple structure, high pulling resistance and horizontal bearing capacity, low manufacturing cost, high construction efficiency and the like. The pile-end anchoring plate is provided with the abutted seams, the arc-shaped strip plates can be bent through the abutted seams and then welded into a whole pile-end anchoring plate, and therefore the manufacturing process and difficulty of the pile-end anchoring plate can be reduced. The utility model realizes the mechanical connection of the piles through the structures of the pile end anchoring plate, the connecting clamp, the bolt and the like, and has the characteristics of simple structure, high uplift bearing capacity, low manufacturing cost, high construction efficiency and no welding during field installation. The inner circle of the pile end anchoring plate is evenly provided with a plurality of clamping teeth towards the center of the pile end anchoring plate, and the pile end anchoring plate is clamped and fixed with the clamping teeth corresponding to the head and tail plates in the production process of the precast pile. Based on this application mixes pile head structure of reinforcement precast pile, can realize after will two mix reinforcement stake pile extension with pile body equal strong, the construction is simple and convenient.
Drawings
Fig. 1 is a schematic structural view of a hybrid reinforcement precast pile according to embodiment 1 of the present invention;
fig. 2 is a first schematic structural diagram of a pile-end anchor plate according to embodiment 1 of the present invention;
fig. 3 is a second schematic structural diagram of a pile-end anchoring plate according to embodiment 1 of the present invention;
fig. 4 is a schematic structural view three of the pile-end anchoring plate according to embodiment 1 of the present invention;
fig. 5 is a fourth schematic structural view of a pile-end anchor plate according to embodiment 1 of the present invention;
fig. 6 is a fifth structural schematic view of a pile-end anchoring plate according to embodiment 1 of the present invention;
fig. 7 is a sixth schematic structural view of a pile-end anchor plate according to embodiment 1 of the present invention;
fig. 8 is a schematic perspective view of a prestressed reinforcement structure according to example 1 of the present invention;
FIG. 9 is an enlarged view of the spiral groove structure in embodiment 1 of the present invention;
fig. 10 is a first structural schematic view of a prestressed reinforcement in example 1 of the present invention;
FIG. 11 is a cross-sectional view taken at A-A of FIG. 10;
FIG. 12 is a cross-sectional view taken at B-B of FIG. 10;
fig. 13 is a second structural diagram of a prestressed reinforcement according to an embodiment of the present invention;
FIG. 14 is a cross-sectional view taken at A-A of FIG. 13;
FIG. 15 is a cross-sectional view taken at B-B of FIG. 13;
fig. 16 is a third structural diagram of a prestressed reinforcement according to an embodiment of the present invention;
FIG. 17 is a cross-sectional view taken at A-A in FIG. 16;
FIG. 18 is a cross-sectional view taken at B-B of FIG. 16;
fig. 19 is a schematic structural view of a hybrid reinforcement precast pile according to embodiment 2 of the present invention;
fig. 20 is a schematic structural view of a connection conversion member before prestressed reinforcement tension in embodiment 2 of the present invention;
fig. 21 is a schematic structural view of a connection conversion member after tension of a stress steel bar according to embodiment 2 of the present invention.
In the figure: 1. a concrete pile body; 2. a pile end anchoring plate; 3. concrete; 4. pre-stressing the steel bars; 5. a spiral stirrup; 6. tensioning screw holes; 7. prestressed reinforcement anchoring holes; 8. non-prestressed reinforcement; 9. a pile hoop; 10. a main body of reinforcing steel bar; 11. upsetting a cap; 12. a spiral groove; 13. a boss; 14. a circumferential groove; 15. an upper convex portion; 16. a lower recess; 17. a first chuck table; 18. A relief pattern; 19. concave lines. 20. A second chuck table; 21. a non-prestressed reinforcement anchoring plate; 22. connecting a conversion piece; 23. a connecting rod; 24. a joining cylinder; 25. a connecting cylinder; 26. a first sliding section; 27. a second chuck table; 29. elastic back-off; 30. a rib passing groove; 31. splicing; 32. clamping teeth; 33. an inner side screw hole.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example 1
Fig. 1 shows an embodiment of the hybrid reinforcement precast pile of the present invention, which includes a concrete pile body 1 and a pile-end anchoring plate 2; the concrete pile body 1 is internally provided with prestressed reinforcements 4, non-prestressed reinforcements 8 and spiral stirrups 5; the spiral stirrup 5 is wound outside the prestressed reinforcement 4 and the non-prestressed reinforcement 8 to form a reinforcement framework cage, and the concrete 3 wraps the prestressed reinforcement 4, the non-prestressed reinforcement 8 and the spiral stirrup 5; the pile-end anchoring plate 2 is at least arranged at one end of the concrete pile body 1, the section of the pile-end anchoring plate 2 is hollow or solid, and the end part of the prestressed reinforcement 4 is connected with the pile-end anchoring plate 2; at least one end of the non-prestressed reinforcement 8 is provided with a connecting piece; the non-prestressed reinforcement 8 is anchored with the concrete 3 by means of said connecting pieces.
Preferably, the connecting piece is a non-prestressed steel bar anchoring plate 21; the non-prestressed reinforcement anchoring plate 21 is wrapped by the concrete 3, and the non-prestressed reinforcement 8 is anchored with the concrete 3 through the non-prestressed reinforcement anchoring plate 21. Preferably, the non-prestressed reinforcement 8 is screwed to the non-prestressed reinforcement anchoring plate 21. The end of the non-prestressed reinforcement 8 is provided with an external thread, the non-prestressed reinforcement anchoring plate 21 is provided with a cavity, the cavity is a through or non-through non-prestressed reinforcement anchoring plate 21, an internal thread is arranged inside the cavity, and the internal thread is matched with the external thread of the non-prestressed reinforcement 8. The anchoring piece is arranged at the end part of the non-prestressed reinforcement, so that the anchoring force of the deformed steel bar and the concrete can be increased, the deformation of the end part of the pile in the horizontal bearing capacity can be reduced, the rigidity of the end part can be improved, the length of the pile sleeve hoop can be reduced, and the cost can be saved.
The mixed reinforcement precast pile also comprises a pile hoop 9; the pile hoop 9 is at least arranged on the concrete outer surface of one end of the concrete pile body 1 and connected with the clamping groove of the pile end anchoring plate 2. Shear nails can be arranged inside the pile hoops 9 or the inner sides of the pile hoops 9 are arranged in a wave shape, so that the bonding force with concrete is improved.
As shown in fig. 2-7, a plurality of tensioning screw holes 6 and prestressed reinforcement anchoring holes 7 are uniformly formed in the pile end anchoring plate 2, the tensioning screw holes 6 and the prestressed reinforcement anchoring holes 7 are communicated or not communicated through the reinforcement grooves 30, the end portions of the prestressed reinforcements 4 penetrate through the tensioning screw holes 6, and are finally installed in the prestressed reinforcement anchoring holes 7. Fig. 2 shows that two of the tension screw holes 6 and the prestressed reinforcement anchoring holes 7 are in a group and distributed on the annular surface of the pile-end anchoring plate 2, and the circle centers of the tension screw holes 6 and the prestressed reinforcement anchoring holes 7 are located on the same circumference.
Fig. 3 shows that two tensioning screw holes 6 and one prestressed reinforcement anchoring hole 7 are in one group, and the prestressed reinforcement anchoring hole 7 is located between the two tensioning screw holes 6, and is uniformly distributed on the annular surface of the pile end anchoring plate 2, and the circle centers of the tensioning screw holes 6 and the prestressed reinforcement anchoring hole 7 are located on the same circumference. Fig. 4 shows that the centers of circles of the tensioning screw hole 6 and the prestressed reinforcement anchoring hole 7 are not located on the same circumference, and the circle formed by connecting the centers of circles of the tensioning screw hole 6 is located inside the circle formed by the prestressed reinforcement anchoring hole 7. Fig. 5 shows that the prestressed reinforcement anchoring holes 7 are connected in a circular shape to form a circle, and 5 tensioning screw holes 6 are uniformly arranged at the periphery of each prestressed reinforcement anchoring hole 7. Fig. 6 shows that the tension screw hole 6 and the prestressed reinforcement anchoring hole 7 are communicated with each other through the bar passing groove 30.
As shown in fig. 7, the pile-end anchoring plates 2 are provided with a patchwork 31, and the pile-end anchoring plates 2 are integrally connected at the patchwork 31. The pile-end anchoring plate can be formed into a whole by bending and welding the arc-shaped strip plates into the pile-end anchoring plate by means of electric welding through abutted seams, so that the manufacturing process and difficulty of the pile-end anchoring plate can be reduced. The included angle alpha formed by the intersection of the straight line of the center of the prestressed reinforcement anchoring hole 7 and the tensioning screw hole 6 and the center of the pile end anchoring plate 2 is 8-15 degrees.
The inner circle of the pile-end anchoring plate 2 is provided with a plurality of trapezoidal latch teeth 32 facing the center of the pile-end anchoring plate 2, preferably, the number of the latch teeth 32 is 5, the latch teeth are uniformly distributed in the pile-end anchoring plate 2, and the included angle delta of the upper ends of the latch teeth 32 is 90-140 degrees. Through setting up trapezoidal latch 32, help stake end anchor plate 2 in precast pile production process with the latch that head and the tail board department corresponds fixed of block each other.
As shown in fig. 8, the prestressed reinforcement 4 includes a reinforcement body 10 and an upset cap 11; at least one end of reinforcing bar main part 10 is equipped with upsetting cap 11, upsetting cap 11 passes reinforcing bar main part 10 terminal surface, and is located pile end anchor plate 2's prestressing steel anchor hole 7. Preferably, a plurality of continuous spiral grooves 12 are uniformly distributed on the outer surfaces of the reinforcing steel bar body 10 and the upsetting cap 11 in the circumferential direction. Preferably, the spiral groove 12 has a spiral angle β of 35 ° to 60 °, as shown in fig. 9.
As shown in fig. 10 to 18, the upset cap 11 is provided with a boss 13 at the top, and a circumferential groove 14 is provided along the circumference of the boss 13 outside the boss 13. The boss 13 is cylindrical or truncated cone-shaped. Fig. 10 and 13 show that an end of a reinforcing bar body 10 is provided with an upset cap 11, wherein a boss 13 of fig. 10 is cylindrical, fig. 11 is a cross-sectional view taken along a-a in fig. 10, and fig. 12 is a cross-sectional view taken along B-B in fig. 10. The boss 13 of fig. 13 is in the shape of a truncated cone, fig. 14 is a sectional view taken along a-a in fig. 13, and fig. 15 is a sectional view taken along B-B in fig. 13. Fig. 16 shows that the two ends of the reinforcing steel bar body 10 are both provided with the upsetting caps 11. Fig. 17 is a sectional view taken at a-a in fig. 16, and fig. 18 is a sectional view taken at B-B in fig. 16.
The upsetting cap 11 is divided into an upper convex part 15 and a lower concave part 16 at the maximum diameter, the lower concave part 16 is connected with the steel bar body 10, and the ratio of the height of the upper convex part 15 to the height of the lower concave part 16 is 1/8-1/2.
The pile-end anchoring plate 2 is provided with a first clamping table 17, and the first clamping table 17 of the pile-end anchoring plate 2 is used for being in butt joint with a clamping table of a connecting clamp. The width of the connecting clamp groove is more than 0.5mm larger than the sum of the thicknesses of the clamping tables of the pile end anchoring plates of the upper and lower sections of the precast pile.
The production method of the mixed reinforcement precast pile comprises the following steps:
the fixed-length blanking and processing of the prestressed reinforcement 4 are as follows: blanking and cutting the prestressed reinforcement 4 to a certain length according to design requirements, and then processing at least one end of the prestressed reinforcement 4 by a pier cap 11;
blanking of non-prestressed reinforcement 8 in fixed length: cutting the non-prestressed reinforcement 8 into a certain length according to design requirements, and then at least carrying out thread turning on one end of the non-prestressed reinforcement 8 to enable the non-prestressed reinforcement 8 to be anchored with the concrete 3 or connected with the pile-end anchoring plate 2 through the connecting piece, wherein the blanking length of the non-prestressed reinforcement 8 is 5 cm-50 cm smaller than that of the prestressed reinforcement 4;
and (3) weaving a cage by using a steel bar framework: forming the prestressed reinforcement 4, the non-prestressed reinforcement 8 and the threaded stirrup 5 into an integral reinforcement cage;
installing a connecting piece: sequentially installing connecting pieces at the end parts of the non-prestressed reinforcements 8;
treating the die: cleaning an upper die and a lower die for producing the mixed reinforcement precast pile, and then coating a separant, so that the precast pile is conveniently maintained and demoulded;
and (3) processing and installing the pile end anchoring plate 2: arranging a abutted seam 31 on a pile end anchoring plate 2, connecting the pile end anchoring plate 2 at the abutted seam 31 to form a whole, uniformly arranging a plurality of latch teeth 32 facing the center of the pile end anchoring plate 2 on the inner circle of the pile end anchoring plate 2, uniformly processing a plurality of tensioning screw holes 6 and prestressed reinforcement anchoring holes 7 on the pile end anchoring plate 2, lifting a reinforcement cage to the inner cavity of a lower die, installing a pile hoop 9 at the outer side of the pile end anchoring plate 2, installing the pile end anchoring plate 2 at the end part of the reinforcement cage, and anchoring one end of a prestressed reinforcement 4 in the prestressed reinforcement anchoring holes 7 of the pile end anchoring plate 2;
installing a tensioning component: installing tensioning parts at two ends of the steel reinforcement cage;
concrete distribution and tensioning: arranging the concrete material and then performing prestress tensioning;
and centrifuging, maintaining and demolding to obtain the finished product of the mixed reinforcement precast pile.
The steel reinforcement framework cage weaving method specifically comprises the following steps: the method comprises the following steps of performing roll welding and cage weaving on the prestressed reinforcement 4, the non-prestressed reinforcement 8 and the threaded stirrup 5 to enable the prestressed reinforcement 4, the non-prestressed reinforcement 8 and the threaded stirrup 5 to form an integral steel reinforcement framework cage, or performing roll welding and cage weaving on the prestressed reinforcement 4 and the threaded stirrup 5 to enable the prestressed reinforcement 4 and the threaded stirrup 5 to form an integral steel reinforcement framework cage, and binding the non-prestressed reinforcement 8 on the inner side of the steel reinforcement framework cage at one time.
The concrete material distribution and tensioning steps are as follows: after the concrete material is arranged in the inner cavity of the lower die of the die, the upper die of the die is closed, and then the prestressed tensioning is carried out, or after the upper die of the die is closed, the concrete material is arranged in the inner cavity of the lower die of the die, and then the prestressed tensioning is carried out.
In the step of installing the connecting piece, the connecting piece is a non-prestressed reinforcement anchoring plate 21, and a plurality of non-prestressed reinforcement anchoring plates 21 are sequentially installed at the end of the non-prestressed reinforcement 8. The maximum outer diameter of the non-prestressed reinforcement anchoring plate 21 is at least 1.5 times of the outer diameter of the reinforcement. When the non-prestressed reinforcement anchoring plate 21 is made of a non-metallic material, the anchoring plate can bear a temperature of 200 ℃ under a pressure of 1 MPa.
The utility model realizes the mechanical connection of the piles through the structures of the pile end anchoring plate 2, the connecting clamp, the bolt and the like, and has the characteristics of simple structure, high uplift bearing capacity, low manufacturing cost, high construction efficiency and no welding during field installation.
Example 2
As shown in fig. 19 to 21, the present embodiment 1 is different from the embodiment 2 in that the connecting member of the hybrid reinforcement precast pile is a connecting conversion member 22; one end of the connecting and converting piece 22 is connected with the non-prestressed reinforcement 8, and the other end is connected with the pile-end anchoring plate 2. As shown in fig. 20, the connection converting member 22 includes a connection rod 23, an engagement cylinder 24, and a connection cylinder 25; one end and the 2 threaded connection of stake end anchor plate of connecting rod 23, the other end of connecting rod 23 and the one end axial sliding connection that links up a section of thick bamboo 24, the other end that links up a section of thick bamboo 24 is connected with the one end of connecting cylinder 25, the other end of connecting cylinder 25 and the tip threaded connection of non-prestressed reinforcement 8. One end of the connecting cylinder 24 is provided with a first sliding part 26, the other end is provided with a second clamping table 27, one end of the connecting cylinder 25 is provided with a second sliding part, the other end is provided with an elastic reverse buckle 29, and the elastic reverse buckle 29 can move in the radial direction after being extruded by external force; the first sliding portion 26 and the second sliding portion are connected in a sliding mode, and after the non-prestressed reinforcement 8 is tensioned, the second clamping table 27 can be clamped in the elastic reverse buckle 29. Connecting rod 23 is connected with inboard screw 33 of stake end anchor plate 2, and connecting cylinder 25 and non-prestressed reinforcement 8's end connection to realize non-prestressed reinforcement 8 and stake end anchor plate 2's being connected, after 4 stretch-draw of prestressed reinforcement, the second ka tai 27 of linking up a section of thick bamboo 24 and the elasticity back-off 29 card of connecting cylinder 25 are in the same place, as shown in fig. 21, thereby realize that the steel reinforcement cage is whole to be connected as an organic wholely with stake end anchor plate 2.
The present embodiment 2 differs from the method for producing a hybrid reinforcement precast pile of embodiment 1 in that in the step of installing the connecting members, a plurality of connecting rods 23 for connecting the conversion members are sequentially installed in screw holes formed in the inner side of the pile-end anchoring plate 2, an engaging cylinder 24 is installed on the connecting rods 23, the engaging cylinder 24 is axially movable, a plurality of connecting cylinders 25 are sequentially installed at the end of the non-prestressed reinforcement 8, and the connecting cylinders 25 are sequentially inserted into the engaging cylinder 24.
The non-prestressed reinforcement is connected with the pile-end anchoring plate by arranging the connection conversion piece, and after the prestressed reinforcement is tensioned, the non-prestressed reinforcement, the prestressed reinforcement and the pile-end anchoring plate are connected into a whole, so that the performance of the pile end is enhanced. The pile end anchoring plate is connected with the non-prestressed reinforcement, so that the prestressed reinforcement and the non-prestressed reinforcement are anchored on the pile end anchoring plate, and the pile end anchoring plate has the characteristics of simple structure, high pulling resistance and horizontal bearing capacity, low manufacturing cost, high construction efficiency and the like.
It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (14)
1. A mixed reinforcement precast pile is characterized by comprising a concrete pile body (1) and a pile end anchoring plate (2);
the concrete pile body (1) is internally provided with prestressed reinforcements (4), non-prestressed reinforcements (8) and spiral stirrups (5); the spiral stirrup (5) is wound outside the prestressed reinforcement (4) and the non-prestressed reinforcement (8) to form a reinforcement cage, and the concrete (3) wraps the prestressed reinforcement (4), the non-prestressed reinforcement (8) and the spiral stirrup (5); the pile-end anchoring plate (2) is at least arranged at one end of the concrete pile body (1), and the end part of the prestressed reinforcement (4) is connected with the pile-end anchoring plate (2); at least one end of the non-prestressed reinforcement (8) is provided with a connecting piece; the non-prestressed reinforcement (8) is anchored with the concrete (3) or connected with the pile-end anchoring plate (2) through the connecting piece.
2. The hybrid reinforced precast pile according to claim 1, wherein the connecting member is a non-prestressed reinforcement anchoring plate (21); the non-prestressed reinforcement anchoring plate (21) is wrapped by the concrete (3), and the non-prestressed reinforcement (8) is anchored with the concrete (3) through the non-prestressed reinforcement anchoring plate (21).
3. A hybrid reinforced precast pile according to claim 1, wherein the connecting member is a connection converting member (22); one end of the connecting and converting piece (22) is connected with the non-prestressed reinforcement (8), and the other end is connected with the pile-end anchoring plate (2).
4. A hybrid reinforced precast pile according to claim 3, wherein the connection converting member (22) comprises a connecting rod (23), an engaging cylinder (24) and a connecting cylinder (25); one end of the connecting rod (23) is connected with the pile end anchoring plate (2), the other end of the connecting rod (23) is connected with one end of the connecting cylinder (24) in an axial sliding mode, the other end of the connecting cylinder (24) is connected with one end of the connecting cylinder (25), and the other end of the connecting cylinder (25) is connected with the end of the non-prestressed reinforcement (8).
5. The hybrid reinforcement precast pile according to claim 4, wherein the joint cylinder (24) is provided with a first sliding portion (26) at one end and a second clamping table (27) at the other end, and the joint cylinder (25) is provided with a second sliding portion at one end and an elastic reverse buckle (29) at the other end; the first sliding portion (26) is connected with the second sliding portion in a sliding mode, and after the non-prestressed reinforcement (8) is tensioned, the second clamping table (27) can be clamped in the elastic reverse buckle (29).
6. The hybrid reinforcement precast pile according to claim 1, further comprising a pile cuff (9); the pile hoop (9) is at least arranged on the outer surface of concrete at one end of the concrete pile body (1) and is connected with the clamping groove of the pile end anchoring plate (2).
7. The hybrid reinforcement precast pile according to claim 6, characterized in that the pile hoop (9) is internally provided with shear pins or the pile hoop (9) is internally provided with wave-shaped.
8. The hybrid reinforcement precast pile according to claim 1, wherein the pile-end anchoring plates (2) are provided with a patchwork (31), and the pile-end anchoring plates (2) are integrally connected at the patchwork (31).
9. The hybrid reinforcement precast pile according to claim 1, wherein the inner circle of the pile-end anchoring plate (2) is uniformly provided with a plurality of latch teeth (32) toward the center of the pile-end anchoring plate (2).
10. The hybrid reinforced precast pile according to claim 1, wherein the prestressed reinforcement (4) comprises a reinforcement body (10) and an upset cap (11); at least one end of the steel bar main body (10) is provided with an upsetting cap (11), the upsetting cap (11) penetrates through the end face of the steel bar main body (10) and is located in a prestressed steel bar anchoring hole (7) of the pile end anchoring plate (2).
11. The precast pile with mixed reinforcement according to claim 10, wherein a plurality of continuous spiral grooves (12) are uniformly distributed on the outer surfaces of the steel bar body (10) and the upsetting cap (11) in the circumferential direction, and the spiral angle β of the spiral grooves (12) is 35-60 °.
12. The hybrid reinforcement precast pile according to claim 10, wherein the upset cap (11) is provided with a boss (13) at the top.
13. The hybrid reinforcement precast pile according to claim 10, wherein the upset cap (11) is divided into an upper convex part (15) and a lower concave part (16) at the maximum diameter, the lower concave part (16) is connected with the steel bar body (10), and the ratio of the height of the upper convex part (15) to the height of the lower concave part (16) is 1/8-1/2.
14. The hybrid reinforcement precast pile according to claim 1, wherein the pile-end anchoring plate (2) is provided with a first clamping table (17), the first clamping table (17) of the pile-end anchoring plate (2) is used for butt joint with a clamping table of a connecting card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122488221.6U CN216194672U (en) | 2021-10-15 | 2021-10-15 | Mixed reinforcement precast pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122488221.6U CN216194672U (en) | 2021-10-15 | 2021-10-15 | Mixed reinforcement precast pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216194672U true CN216194672U (en) | 2022-04-05 |
Family
ID=80867240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122488221.6U Active CN216194672U (en) | 2021-10-15 | 2021-10-15 | Mixed reinforcement precast pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216194672U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115142402A (en) * | 2022-06-30 | 2022-10-04 | 安徽省交通规划设计研究总院股份有限公司 | Quick-connection prefabricated pile cap for composite foundation and connection method thereof |
-
2021
- 2021-10-15 CN CN202122488221.6U patent/CN216194672U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115142402A (en) * | 2022-06-30 | 2022-10-04 | 安徽省交通规划设计研究总院股份有限公司 | Quick-connection prefabricated pile cap for composite foundation and connection method thereof |
| CN115142402B (en) * | 2022-06-30 | 2023-08-22 | 安徽省交通规划设计研究总院股份有限公司 | Quick-connection prefabricated pile cap for composite foundation and connection method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105239559A (en) | Common deformed steel bar tensioning device, prefabricated square pile and process for prefabricated square pile | |
| CN216194672U (en) | Mixed reinforcement precast pile | |
| CN112922235A (en) | Fabricated concrete prefabricated column and construction method thereof | |
| CN114134883A (en) | Low-prestress-degree high-ductility mixed reinforced concrete pile and manufacturing method thereof | |
| CN113026726A (en) | Large-diameter PHC (prestressed high-strength concrete) tubular pile of double-layer reinforcement cage and preparation method thereof | |
| CN113846628A (en) | Mixed reinforcement precast pile and production method thereof | |
| CN110953125A (en) | Prefabricated polygonal prestressed concrete tower cylinder and manufacturing mold of cylinder sections thereof | |
| CN110883937A (en) | Movable non-pretensioning bidirectional prestress production line | |
| CN113585620B (en) | Prestressed double-web steel reinforced concrete beam | |
| CN115354782A (en) | Assembled prestressed corrugated steel plate composite shear wall and construction method thereof | |
| CN215168600U (en) | Steel pipe concrete combination formula tower section of thick bamboo | |
| CN210395851U (en) | Assembled concrete superposed beam | |
| CN212406214U (en) | Support structure for improving existing building structure column | |
| CN211446552U (en) | Steel-concrete combined section structure of steel box arch bridge arch rib | |
| CN109571747B (en) | Construction method of broken line pretensioning prestressed double T-beam | |
| CN112343042A (en) | UHPC prefabricated special-shaped pile and preparation method thereof | |
| CN211143061U (en) | Steel strand concrete pile | |
| CN112922234A (en) | Equivalent steel reinforced concrete prefabricated column and construction method thereof | |
| CN215925959U (en) | Prestressed concrete square pile | |
| CN216194701U (en) | Concrete square pile end plate and prestressed concrete square pile comprising same | |
| CN220100395U (en) | Pretensioned prefabricated prestressed steel bar concrete bent column with end anchor plates | |
| CN215563846U (en) | Prefabricated assembled prestressing force dual ripple web shaped steel concrete beam | |
| CN216194702U (en) | Concrete square pile end plate and prestressed concrete square pile comprising same | |
| CN219298200U (en) | Tensioning anchoring device for finish rolling deformed steel bar prestress anti-floating anchor rod | |
| CN213234009U (en) | Framework for concrete prefabricated component and concrete prefabricated component |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |