CN210917435U

CN210917435U - Connecting structure of precast pile and bearing platform

Info

Publication number: CN210917435U
Application number: CN201921607325.0U
Authority: CN
Inventors: 毕大君; 吴平; 乐腾胜; 郭杨
Original assignee: Quality Of Contruction In Anhui Province Supervision And Inspection Station; Anhui Institute of Architectural Research and Design
Current assignee: Anhui Construction Engineering Testing Technology Group Co ltd; Anhui Institute of Architectural Research and Design
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-07-03
Anticipated expiration: 2029-09-25

Abstract

The utility model discloses a connection structure of precast pile and cushion cap, including the precast pile and the cushion cap of locating the precast pile top, be equipped with horizontally first end plate and second end plate in cushion cap and the precast pile respectively, first end plate is located directly over the second end plate, and the top of precast pile is equipped with the pile end plate, extends a plurality of splice bars downwards along first end plate circumference, and the splice bar bottom is connected to the pile end plate, and it has the concrete to fill between first end plate, second end plate and the splice bar. The utility model provides the high precast pile and cushion cap are connected the position's pile body intensity, and the precast pile is difficult for the fracture destruction with the cushion cap junction.

Description

Connecting structure of precast pile and bearing platform

Technical Field

The utility model belongs to the technical field of building pile foundation engineering, concretely relates to connection structure of precast pile and cushion cap.

Background

In recent years, precast piles are widely applied to the field of geotechnical engineering due to the characteristics of industrial production, short construction period, high vertical bearing capacity and the like, and gradually become one of the leading pile types in pile foundation engineering. When the precast pile is used as a vertical bearing component, the connection and construction method with a bearing platform is always a difficult problem for engineering design and constructors; the common technical method is mainly to pour concrete after planting the steel bars in the pile cavity, but the steel bar planting process on the construction site is complex, the anchoring depth of the steel bars is difficult to ensure, the connection between the steel bars and the longitudinal steel bars at the bottom of the bearing platform is insufficient, and the like, so that the joint of the precast pile and the bearing platform is easy to crack and damage.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a connection structure of precast pile and cushion cap, this connection structure improve the pile body intensity at precast pile and cushion cap connection position, and the precast pile is difficult for the fracture destruction with the cushion cap junction.

The utility model provides a pair of connection structure of precast pile and cushion cap, including the precast pile with locate the cushion cap of precast pile top, be equipped with horizontally first end plate and second end plate in cushion cap and the precast pile respectively, first end plate is located directly over the second end plate, the top of precast pile is equipped with the pile end plate, extends a plurality of splice bars downwards along first end plate circumference, the splice bar bottom is connected to the pile end plate, it has the concrete to fill between first end plate, second end plate and the splice bar.

As a further description of the above technical solution:

the precast pile is a cylindrical hollow structure with an inner cavity, the pile end plate is of a corresponding annular structure, and the second end plate is arranged in the inner cavity and the cross section of the second end plate is adapted to the inner cavity.

As a further description of the above technical solution:

first end plate and second end plate are cylindrical structure and are connected through a plurality of main muscle, and the radius of first end plate is greater than the radius of second end plate, and the main muscle evenly sets up along the circumference of second end plate.

As a further description of the above technical solution:

the outer diameter of the first end plate is adapted to the outer diameter of the pile end plate.

As a further description of the above technical solution:

the bearing platform is internally provided with bearing platform reinforcing bars which are horizontally stacked, the height of the bottommost layer of the bearing platform reinforcing bars is lower than that of the first end plate, and the bearing platform reinforcing bars and the main bars are arranged in a staggered mode.

The beneficial effects of the utility model are specifically as follows:

the utility model discloses the connection structure of precast pile and cushion cap, can improve the pile body intensity at precast pile and cushion cap connection position, wherein, first end plate, the second end plate, the main muscle, tie bar and stirrup can form prefabricated integral type structure, this integral type structure belongs to batch production finished product, need not the on-the-spot preparation, when precast pile and cushion cap are connected to needs, directly use this integral type structure at the scene, then pour the cushion cap on the scene, pour into the concrete through pouring, form the reinforced concrete who contains two upper and lower end plates and connect the rigid body, it is simple and fast, the quality is easily guaranteed, save the time limit for a project, reduce the cost, the safety of engineering quality has been guaranteed.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic longitudinal sectional view of a connection structure in an embodiment;

FIG. 2 is a schematic longitudinal sectional view of a connecting structure in the embodiment (connecting ribs are not shown);

FIG. 3 is a schematic cross-sectional view of the bearing platform of the embodiment;

labeled as: 1. prefabricating a pile; 11. an inner cavity; 12. pile end plates; 2. a bearing platform; 21. reinforcing bars of the bearing platform; 211. longitudinal ribs; 212. a transverse rib; 3. a first end plate; 31. connecting rib holes; 4. a second end plate; 41. a main rib hole; 5. a main rib; 51. hooping; 6. and connecting ribs.

Detailed Description

The structural features of the present invention will now be described in detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the present embodiment provides a connection structure of a precast pile and a bearing platform, including a precast pile 1 and a bearing platform 2 disposed above the precast pile 1, where the precast pile 1 is a cylindrical hollow structure with an inner cavity 11, and a pile end plate 12 with an annular structure is disposed at a top end of the precast pile 1.

Bearing platform 2 and precast pile 1 are equipped with first end plate 3 of horizontally and second end plate 4 respectively, first end plate 3 is located directly over second end plate 4, the external diameter of first end plate 3 suits with the external diameter of pile end plate 12, second end plate 4 suits with precast pile 1's inner chamber 11, first end plate 3 and second end plate 4 are cylindrical structure and are connected through a plurality of main muscle 5, main muscle 5 evenly sets up along second end plate 4's circumference, still be equipped with a plurality of tie bar hole 31 along its circumference in the first end plate 3, extend a plurality of tie bar 6 downwards along 3 circumference of first end plate, the length of tie bar 6 is less than the length of main muscle 5, tie bar 6 top is connected to tie bar hole 31, tie bar 6 bottom is connected to pile end plate 12, first end plate 3, it has the concrete to fill between second end plate 4 and the tie bar 6.

Referring to fig. 2, corresponding main rib holes 41 are formed in the first end plate 3 and the second end plate 4, two ends of the main rib 5 are connected to the main rib holes 41, and a stirrup 51 is further arranged between the main ribs 5. The tie-bar hole 31 is provided around the outside of the main-bar hole 41 of the first end plate 3.

Referring to fig. 3, be equipped with the cushion cap arrangement of reinforcement 21 that the level stack set up in cushion cap 2, the height that highly is less than first end plate 3 of cushion cap arrangement of reinforcement 21's bottom, cushion cap arrangement of reinforcement 21 includes vertical muscle 211 and horizontal muscle 212, vertical muscle 211 and the crisscross setting of horizontal muscle 212 mutually perpendicular, preferably through welding mutual fixed connection, be crossing trend department with main muscle 5, stirrup 51 and splice bar 6 in horizontal space when vertical muscle 211 or horizontal muscle 212, vertical muscle 211 or horizontal muscle 212 are the bending structure and wind off main muscle 5, stirrup 51 and splice bar 6, finally form cushion cap arrangement of reinforcement 61.

This embodiment precast pile and connection structure of cushion cap, can improve the pile body intensity of precast pile 1 and cushion cap 2 junction site, wherein, first end plate 3, second end plate 4, main muscle 5, splice bar 6 and stirrup 51 can form prefabricated integral type structure, this integral type structure belongs to the batch production finished product, need not the site fabrication, when needs connect precast pile 1 and cushion cap 62, directly use this integral type structure at the scene, then at cast-in-place cushion cap 2, pour into the concrete through pouring, form the reinforced concrete who contains two upper and lower end plates and connect the rigid body, and is simple and convenient swift, and the quality is easily guaranteed, practices thrift the time limit for a project, reduces the cost, has guaranteed the safety of engineering quality.

In this embodiment, the construction method of the connection structure of the precast pile and the bearing platform includes:

step (1), pretreatment

Removing foundation soil around the precast pile 1 to enable the pile top of the precast pile 1 to reach a designed elevation which is 20-40 cm higher than the designed elevation at the bottom of the bearing platform 2, and removing sundries in an anchoring hole of an end plate of the precast pile;

step (2), fixing the integrated structure and the precast pile 1

Inserting the second end plate 4 of the integrated structure into an inner cavity 11 of the precast pile 1, extending a distance from the top end of the precast pile 1 by the main reinforcement 5, and vertically connecting the bottom end of the connecting reinforcement 6 into a pile end plate 12 and fixing (the fixing mode of the two ends of the connecting reinforcement 6 can be sleeve adhesive connection or thread mechanical connection, and a proper fixing mode is selected according to the reinforcement of the connecting reinforcement 6);

step (3), arranging bearing platform reinforcing bars 21

Preparing a bearing platform reinforcing bar 21 required by pouring the bearing platform 2, wherein the bearing platform reinforcing bar 21 is arranged from the lower part of the first end plate 3, and the bearing platform reinforcing bar 21 is horizontally stacked;

step (4), pouring bearing platform 2

According to the height design of the bearing platform 2, a layer of bearing platform reinforcing bars 21 is arranged every time one layer is poured so as to correspondingly form the bearing platforms 2 with different heights, the arrangement of the bearing platform reinforcing bars 21 is completed, and the longitudinal bars 211 and the transverse bars 212 are connected with the connecting bars 6 and the main bars 5 to form a complete reinforcement cage; then pouring concrete, wherein the concrete is poured into the inner cavity of the precast pile 1 firstly and then into other parts of the reinforcement cage; and ensuring that concrete is poured into the joint of the precast pile 1 and the bearing platform 2 at one time, and pouring to form a connecting structure of the precast pile 1 and the bearing platform 2.

In this embodiment, the concrete is filled between the first end plate 3, the second end plate 4 and the connecting rib 6, the construction method is simple in operation, the first end plate 3 is poured in the precast pile 1 through the concrete, the second end plate 4 is poured in the bearing platform 2 through the concrete, in addition, the connecting rib 6 extending downwards is arranged on the first end plate 3, one end of the connecting rib 6 is connected to the first end plate 3 and is connected with the bearing platform 2 through the first end plate 3, the other end of the connecting rib is connected to the pile end plate 12 of the precast pile 1, the connecting strength of the precast pile 1 and the bearing platform 2 is further improved, the construction process is simplified, the cost is saved, and the manufacturing cost is reduced.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a connection structure of precast pile and cushion cap, includes precast pile (1) and cushion cap (2) of locating precast pile (1) top, a serial communication port, be equipped with horizontally first end plate (3) and second end plate (4) in cushion cap (2) and precast pile (1) respectively, first end plate (3) are located directly over second end plate (4), and the top of precast pile (1) is equipped with pile end plate (12), extends a plurality of splice bars (6) downwards along first end plate (3) circumference, and splice bar (6) bottom is connected to pile end plate (12), and it has the concrete to fill between first end plate (3), second end plate (4) and splice bar (6).

2. A connecting structure of a precast pile and a cap according to claim 1, wherein: precast pile (1) is the cylindrical hollow structure of taking interior chamber (11), and pile end plate (12) are corresponding annular structure, and second end plate (4) are located in interior chamber (11) and its cross section suits with interior chamber (11).

3. A connecting structure of a precast pile and a cap according to claim 2, wherein: first end plate (3) and second end plate (4) are cylindrical structure and are connected through a plurality of main muscle (5), and the radius of first end plate (3) is greater than the radius of second end plate (4), and main muscle (5) evenly set up along the circumference of second end plate (4).

4. A connecting structure of a precast pile and a cap according to claim 2, wherein: the outer diameter of the first end plate (3) is matched with the outer diameter of the pile end plate (12).

5. A connecting structure of a precast pile and a cap according to claim 3, wherein: the bearing platform is characterized in that bearing platform reinforcing ribs (21) which are horizontally arranged in a stacked mode are arranged in the bearing platform (2), the height of the bottommost layer of the bearing platform reinforcing ribs (21) is lower than that of the first end plate (3), and the bearing platform reinforcing ribs (21) and the main ribs (5) are arranged in a staggered mode.