CN216551908U

CN216551908U - Solid precast pile connection structure

Info

Publication number: CN216551908U
Application number: CN202123007706.5U
Authority: CN
Inventors: 汪丽琪; 裘晓莲; 王雪梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2022-05-17
Anticipated expiration: 2031-12-01

Abstract

The utility model discloses a solid precast pile connecting structure which comprises an upper precast solid pile (8), wherein a slurry anchor connecting piece (9) is embedded in the middle of the bottom end of the upper precast solid pile (8), and the lower end of the slurry anchor connecting piece (9) is exposed out of the bottom surface of the upper precast solid pile (8); the pile structure also comprises a lower prefabricated solid pile (10), wherein an inserting cavity (11) is formed in the upper part of the lower prefabricated solid pile (10), and slurry anchor materials are arranged in the inserting cavity (11); the lower end of the slurry anchor connecting piece (9) is positioned in the inserting cavity (11); the slurry anchor connecting piece (9) comprises a connecting main body (1), and anchor reinforcing pieces (2) are arranged at the upper end and the lower end of the connecting main body (1); the connecting main body (1) comprises a shear-resistant reinforcing body (3), and a tensile reinforcing body (4) is arranged in the shear-resistant reinforcing body (3); the anchoring reinforcement (2) is connected with the tensile reinforcement body (4). The utility model has the characteristic of effectively improving the mechanical property of the joint.

Description

Solid precast pile connection structure

Technical Field

The utility model relates to a solid precast pile, in particular to a solid precast pile connecting structure.

Background

The precast pile is a reinforced concrete pile which is produced in a factory and is constructed into a pile on site through static pressure or hammering, and the most widely used pile is a tubular pile and a hollow square pile at present. Due to the hollow structure of the tubular pile and the hollow square pile, the pile body has poor shear resistance, the pile body is cracked and even broken frequently in the construction process, and the use of the precast pile is greatly influenced, so that hollow pile use restriction provisions and local regulations are provided in many areas. Compared with the hollow precast pile, the solid precast pile has the advantages that due to the solid structure, the shear resistance, the bending rigidity and the like of the pile body are greatly improved, and therefore the solid precast pile is widely applied to engineering in recent years.

In practical engineering application, the foundation pile is generally long and is formed by connecting multiple sections of solid piles. The pile splicing of the solid pile still adopts a conventional pile splicing mode, is welded or mechanically connected, is the same as the joint connection of the hollow pile, and becomes the weak point of the solid pile foundation pile. Therefore, the prior art has the problem of poor mechanical property of the joint.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a solid precast pile connecting structure. The utility model has the characteristic of effectively improving the mechanical property of the joint.

The technical scheme of the utility model is as follows: the solid precast pile connecting structure comprises an upper precast solid pile, wherein a slurry anchor connecting piece is embedded in the middle of the bottom end of the upper precast solid pile, and the lower end of the slurry anchor connecting piece is exposed out of the bottom surface of the upper precast solid pile; the pile also comprises a lower prefabricated solid pile, wherein an inserting cavity is arranged at the upper part of the lower prefabricated solid pile, and slurry anchor materials are arranged in the inserting cavity; the lower end of the slurry anchor connecting piece is positioned in the inserting cavity; the slurry anchor connecting piece comprises a connecting main body, and the upper end and the lower end of the connecting main body are provided with anchoring reinforcing pieces; the connecting main body comprises a shear-resistant reinforcing body, and a tensile reinforcing body is arranged in the shear-resistant reinforcing body; the anchoring reinforcement is connected with the tensile reinforcement body.

In the solid precast pile connecting structure, the contact end surfaces of the upper precast solid pile and the lower precast solid pile are respectively provided with the anti-drop end plates, and anti-drop anchoring ribs connected with the anti-drop end plates are further arranged in the upper precast solid pile and the lower precast solid pile.

In the solid precast pile connecting structure, the tensile reinforcement body comprises a plurality of support rods which are uniformly distributed; the support rod is a steel bar, a prestressed steel bar, a steel strand or a glass fiber reinforcement.

In the solid precast pile connecting structure, the tensile reinforcement body includes a set of section steel.

In the solid precast pile connecting structure, an outer steel plate is further arranged outside the connecting main body.

In the solid precast pile connecting structure, a gap layer is arranged between the shear reinforcement body and the anchor reinforcement.

Compared with the prior art, the grout anchor connecting piece is arranged between the upper prefabricated solid pile and the lower prefabricated solid pile, and consists of the connecting main body consisting of the shear-resistant reinforcing body and the tensile reinforcing body and the anchor reinforcing pieces arranged at the upper end and the lower end of the connecting main body; through the arrangement of the anchoring reinforcing part, on one hand, the effect of preventing the joint from being separated can be achieved, on the other hand, the contact bonding area between the anchoring reinforcing part and the grout anchor layer can be increased, and the mechanical property of the connection between the joint and the grout anchor layer is further improved; through the mutual cooperation between thick liquid anchor connecting piece, the cavity of establishing and upper and lower prefabricated hollow pile of inserting of slip casting to can effectively improve shearing, tensile, the bending resistance of prefabricated solid pile joint and strengthen, let the prefabricated pile joint performance be superior to the pile body, and let the connection become more reliable. In conclusion, the utility model has the characteristic of effectively improving the mechanical property of the joint.

Drawings

FIG. 1 is a schematic view of the mounting structure of the present invention;

FIG. 2 is an assembled view of the present invention;

FIG. 3 is a structural view of a grout anchor connection;

FIG. 4 is an interior side view of FIG. 3;

FIG. 5 is a structural view of a slurry anchor connection provided with a clearance layer;

FIG. 6 is an interior side view of FIG. 5;

FIG. 7 is a structural view of a grout anchor connection provided with an outer clad steel plate;

FIG. 8 is a side view of FIG. 7;

FIG. 9 is a structural view of annularly distributed tensile reinforcement;

FIG. 10 is a structural view of a section steel in a cross-shaped distribution;

fig. 11 is a side view of fig. 10.

The labels in the figures are: 1-connecting a main body, 2-anchoring reinforcement, 3-shearing reinforcement, 4-tensile reinforcement, 5-externally-wrapped steel plate, 6-gap layer, 7-round through hole, 8-upper prefabricated solid pile, 9-slurry anchor connecting piece, 10-lower prefabricated solid pile, 11-inserting cavity, 12-anti-drop end plate and 13-anti-drop anchoring rib.

Detailed Description

The utility model is further illustrated by the following figures and examples, which are not to be construed as limiting the utility model.

Examples are given. The solid precast pile connecting structure is shown in figures 1 to 11 and comprises an upper precast solid pile 8, wherein a slurry anchor connecting piece 9 is embedded in the middle of the bottom end of the upper precast solid pile 8, and the lower end of the slurry anchor connecting piece 9 is exposed out of the bottom surface of the upper precast solid pile 8; the pile structure further comprises a lower prefabricated solid pile 10, wherein an inserting cavity 11 is formed in the upper portion of the lower prefabricated solid pile 10, and slurry anchor materials are arranged in the inserting cavity 11; the lower end of the slurry anchor connecting piece 9 is positioned in the inserting cavity 11; the slurry anchor connecting piece 9 comprises a connecting body 1, and anchor reinforcing pieces 2 are arranged at the upper end and the lower end of the connecting body 1; the connecting main body 1 comprises a shear-resistant reinforcing body 3, and a tensile reinforcing body 4 is arranged in the shear-resistant reinforcing body 3; the anchoring reinforcement 2 is connected to a tensile reinforcement 4.

The contact end surfaces of the upper prefabricated solid pile 8 and the lower prefabricated solid pile 10 are respectively provided with an anti-drop end plate 12, and anti-drop anchoring ribs 13 connected with the anti-drop end plates 12 are further arranged in the upper prefabricated solid pile 8 and the lower prefabricated solid pile 10.

The tensile reinforcement body 4 comprises a plurality of uniformly distributed (annular) support rods; the support rod is a steel bar, a prestressed steel bar, a steel strand or a glass fiber reinforcement. As shown in fig. 3 and 4.

Or, the tensile reinforcement body 4 comprises a group of cross-shaped distributed section steels. As shown in fig. 10 and 11.

An outer steel plate 5 is arranged outside the connecting body 1. As shown in fig. 7 and 8.

A gap layer 6 is arranged between the shear reinforcement 3 and the anchoring reinforcement 2. As shown in fig. 5 and 6.

The middle part of the anchoring reinforcement 2 is provided with a round through hole 7.

The support rod and the anchoring reinforcing part are connected by welding or bolts.

The preparation process of the slurry anchor connecting piece comprises the following steps: firstly connecting the tensile reinforcement body and the anchoring reinforcement pieces together, then erecting a mould between the two anchoring reinforcement pieces, pouring the shear-resistant reinforcement body from the round through hole, and removing the template after drying and forming.

The application of the slurry anchor connecting piece on the solid precast pile comprises the following steps: and embedding the slurry anchor connecting piece in the tensile reinforcement body of the upper section solid pile, and pouring concrete to obtain an upper prefabricated solid pile, wherein the lower end of the slurry anchor connecting piece is exposed.

And filling a cementing material, such as one or a mixture of cement paste, grouting material, epoxy resin, cement mortar and concrete, in the inserting cavity of the lower prefabricated solid pile, then inserting the lower end of the slurry anchor connecting piece into the slurry anchor cavity of the lower section of the solid pile, and welding the two anti-drop end plates together by adopting a welding mode to obtain the solid prefabricated pile.

Claims

1. Solid precast pile connection structure, its characterized in that: the grouting solid pile comprises an upper prefabricated solid pile (8), wherein a grout anchor connecting piece (9) is embedded in the middle of the bottom end of the upper prefabricated solid pile (8), and the lower end of the grout anchor connecting piece (9) is exposed out of the bottom surface of the upper prefabricated solid pile (8); the grouting anchor pile is characterized by also comprising a lower prefabricated solid pile (10), wherein an inserting cavity (11) is formed in the upper part of the lower prefabricated solid pile (10), and a grouting anchor material is arranged in the inserting cavity (11); the lower end of the slurry anchor connecting piece (9) is positioned in the inserting cavity (11); the slurry anchor connecting piece (9) comprises a connecting main body (1), and anchor reinforcing pieces (2) are arranged at the upper end and the lower end of the connecting main body (1); the connecting main body (1) comprises a shear-resistant reinforcing body (3), and a tensile reinforcing body (4) is arranged in the shear-resistant reinforcing body (3); the anchoring reinforcement (2) is connected with the tensile reinforcement body (4).

2. The solid precast pile connecting structure according to claim 1, wherein: the contact end surfaces of the upper prefabricated solid pile (8) and the lower prefabricated solid pile (10) are respectively provided with an anti-drop end plate (12), and anti-drop anchoring ribs (13) connected with the anti-drop end plates (12) are further arranged in the upper prefabricated solid pile (8) and the lower prefabricated solid pile (10).

3. The solid precast pile connecting structure according to claim 1, wherein: the tensile reinforcement body (4) comprises a plurality of support rods which are distributed annularly; the support rod is a steel bar, a prestressed steel bar, a steel strand or a glass fiber reinforcement.

4. The solid precast pile connecting structure according to claim 1, wherein: the tensile reinforcement body (4) comprises a group of cross-shaped distributed section steel.

5. The solid precast pile connecting structure according to claim 1, wherein: an outer steel plate (5) is arranged outside the connecting main body (1).

6. The solid precast pile connecting structure according to claim 1, wherein: and a gap layer (6) is arranged between the shear reinforcement body (3) and the anchoring reinforcement (2).