Precast pile cap for turnover pile foundation static load

Abstract

The utility model belongs to the technical field of large-tonnage cast-in-place piles, and particularly relates to a precast pile cap for turnover pile foundation static load, which comprises a concrete body, a plurality of steel bar reserved holes, a pile cap circular groove, a steel plate, a built-in bolt hook and a reinforcing column, a pile cap circular groove is formed in the bottom of the concrete body, and a steel plate is connected into the pile cap circular groove in an embedded mode. According to the prefabricated pile cap, the pile cap is designed to be a prefabricated pile cap capable of being used in a turnover mode, all parts are produced in a factory mode through materials such as concrete, after being transported to a site, existing hoisting machinery is used for prefabricated construction, the parts are connected through groove pressing and crack pouring, construction efficiency is high, and the time for waiting for concrete hardening is not needed; the novel hoisting precast pile cap realizes optimization of construction cost, is convenient to implement and operate, and has great popularization significance.

Description

Technical Field

[0001] The utility model belongs to the technical field of large-tonnage cast-in-place piles, and in particular relates to a prefabricated pile cap for static load of a turnover pile foundation. Background Art

[0002] After the pile foundation construction is completed, according to the specification, 1% and no less than 3 engineering piles must be selected for static load test. Before the static load test, in order to ensure that the pile head is not crushed, a pile cap is required to protect the pile head and protect the pile body from erosion and damage from the external environment. Therefore, the pile foundation plays a vital role in the construction process.

[0003] At present, the existing traditional methods for large-tonnage cast-in-place piles have the following shortcomings: the formwork casting of concrete pile caps requires many steps, the curing time is long, the construction period is delayed, and it cannot be reused. After the inspection is completed, it needs to be chiseled out, which is labor-intensive and time-consuming.

[0004] Based on this, the utility model designs a prefabricated pile cap which can be used for static load of turnover pile foundation to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a prefabricated pile cap for static load of turnover pile foundation.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a prefabricated pile cap for static load of a turnover pile foundation, comprising a concrete body, reserved holes for steel bars, a circular groove for the pile cap, a steel plate, a built-in bolt hook and a reinforcement column, wherein the concrete body is provided with a plurality of reserved holes for steel bars in a ring shape, a circular groove for the pile cap is provided at the bottom of the concrete body, a steel plate is pre-embedded and connected inside the circular groove for the pile cap, a plurality of through holes are provided in a ring shape on the steel plate, and the through holes respectively correspond to the reserved holes for steel bars in a ring shape on the concrete body.

[0007] As a preferred technical solution of the utility model, grooves are provided at the corners of the screw rod at the upper end of the concrete body, and built-in bolt hooks are pre-embedded and connected in the grooves.

[0008] As a preferred technical solution of the utility model, square grooves are provided on both the left and right sides of the concrete body, and handles are provided in the square grooves on both sides.

[0009] As a preferred technical solution of the utility model, a plurality of reinforcing columns are pre-buried inside the concrete body, and the plurality of reinforcing columns are distributed in a plum blossom shape inside the concrete body.

[0010] As a preferred technical solution of the utility model, the reinforcing column includes a column body, a top plate, a bottom plate and a rib plate, the top plate is welded to the upper end of the column body, and the bottom plate is welded to the lower end of the column body.

[0011] As a preferred technical solution of the utility model, four ribs are annularly welded between the side surfaces of the column and the top plate and the bottom plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model designs the pile cap as a prefabricated pile cap that can be used cyclically. Each component is produced in a factory using materials such as concrete. After being transported to the site, it is assembled and constructed using existing lifting machinery. The components are connected by pressing grooves and grouting. The construction efficiency is high and there is no need to wait for the concrete to harden. The new hoisting prefabricated pile cap optimizes the construction cost and is easy to operate, which is of great significance for promotion.

[0014] 2. When the utility model is in use, cast concrete handles are provided in the square grooves on both sides of the concrete body. When it is hoisted, it is convenient for workers to assist in controlling and adjusting the hoisting position, so that the prefabricated pile cap can be smoothly docked with the pile foundation. A plurality of reinforcing columns are pre-embedded in the concrete body to improve the bearing capacity, stability and durability of the pile cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the overall left-side structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall right side structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the overall top view structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0020] Figure 5 It is a schematic diagram of the overall vertical section structure of the utility model;

[0021] Figure 6 It is a partial cross-sectional structural schematic diagram of the utility model;

[0022] Figure 7 This is a schematic diagram of the reinforcing column structure of the utility model.

[0023] In the figure: 1, concrete body; 101, groove; 102, square groove; 103, handle; 2, reserved holes for steel bars; 3, circular groove for pile cap; 4, steel plate; 401, through hole; 5, built-in bolt hook; 6, reinforcement column; 601, column; 602, top plate; 603, bottom plate; 604, rib plate. DETAILED DESCRIPTION

[0024] The following will be combined with the attached embodiment of the present utility model Figure 1-7 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example

[0026] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 The utility model provides the following technical solutions: a prefabricated pile cap for static load of a turnover pile foundation, comprising a concrete body 1, reserved steel bar holes 2, a circular groove 3 for a pile cap, a steel plate 4, a built-in bolt hook 5 and a reinforcing column 6, a plurality of reserved steel bar holes 2 are provided in a ring on the concrete body 1, a circular groove 3 for a pile cap is provided at the bottom of the concrete body 1, a steel plate 4 is pre-embedded and connected inside the circular groove 3 of the pile cap, a plurality of through holes 401 are provided in a ring on the steel plate 4, and the through holes 401 respectively correspond to the reserved steel bar holes 2 provided in a ring on the concrete body 1.

[0027] Grooves 101 are provided at the corners of the screw rod at the upper end of the concrete body 1 , and built-in bolt hooks 5 are pre-embedded and connected in the grooves 101 .

[0028] A square groove 102 is provided on both the left and right sides of the concrete body 1 , and a handle 103 is provided in each of the square grooves 102 on both sides.

[0029] The reserved steel bar holes 2 on the concrete body 1 can be connected with the steel bars on the pile foundation, the circular groove 3 of the pile cap opened at the bottom of the concrete body 1 can fit with the pile head, and the steel plate 4 at the bottom of the concrete body 1 can be seamlessly connected with the pile head, so that the connection has better stability.

[0030] Please refer to Figure 4 , Figure 5 and Figure 7 A plurality of reinforcing columns 6 are pre-buried inside the concrete body 1 , and the plurality of reinforcing columns 6 are distributed in a plum blossom shape inside the concrete body 1 .

[0031] The reinforcing column 6 includes a column body 601 , a top plate 602 , a bottom plate 603 and ribs 604 . The top plate 602 is welded to the upper end of the column body 601 , and the bottom plate 603 is welded to the lower end of the column body 601 .

[0032] Four ribs 604 are annularly welded between the side surface of the column 601 and the top plate 602 and the bottom plate 603 .

[0033] By pre-embedding and casting the reinforcing columns 6 which are distributed in a plum blossom shape in the concrete body 1, the bearing capacity and durability of the prefabricated pile cap can be improved when the concrete body 1 is used, thereby extending the service life of the prefabricated pile cap.

[0034] The working principle and use process of the utility model: during specific use, each component is prefabricated in a factory using materials such as concrete. During the static load test of the pile foundation, it is transported to the site and assembled using existing lifting machinery. It is hoisted simultaneously with the static load counterweight. During hoisting, the pile head steel bars are passed through the corresponding reserved steel bar holes 2, and then the circular grooves 3 of the pile cap are fitted on the pile head. The embedded steel plates 4 of the prefabricated pile cap are placed on the pile head and seamlessly connected with the pile head. The installation of the pile cap is completed, with high construction efficiency, no need to wait for the concrete to harden, and easy operation. After the test is completed, it can be disassembled for turnover use.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A prefabricated pile cap for static load of a turnover pile foundation, comprising a concrete body (1), reserved holes for steel bars (2), a circular groove of the pile cap (3), a steel plate (4), a built-in bolt hook (5) and a reinforcement column (6), characterized in that: The concrete body (1) is provided with a plurality of reserved steel bar holes (2) in a circular shape, the bottom of the concrete body (1) is provided with a pile cap circular groove (3), the interior of the pile cap circular groove (3) is pre-embedded with a steel plate (4), the steel plate (4) is provided with a plurality of through holes (401) in a circular shape, and the through holes (401) respectively correspond to the reserved steel bar holes (2) in a circular shape on the concrete body (1).

2. A prefabricated pile cap for static load of a turnover pile foundation according to claim 1, characterized in that: Grooves (101) are provided at the corners of the screw rod at the upper end of the concrete body (1), and built-in bolt hooks (5) are pre-buried and connected in the grooves (101).

3. The prefabricated pile cap for static load of a turnover pile foundation according to claim 1, characterized in that: The left and right sides of the concrete body (1) are both provided with square grooves (102), and handles (103) are provided in the square grooves (102) on both sides.

4. The prefabricated pile cap for static load of a turnover pile foundation according to claim 1, characterized in that: A plurality of reinforcing columns (6) are pre-buried inside the concrete body (1), and the plurality of reinforcing columns (6) are distributed in a plum blossom shape inside the concrete body (1).

5. The prefabricated pile cap for static load of a turnover pile foundation according to claim 4, characterized in that: The reinforcing column (6) comprises a column body (601), a top plate (602), a bottom plate (603) and a rib plate (604), wherein the top plate (602) is welded to the upper end of the column body (601), and the bottom plate (603) is welded to the lower end of the column body (601).

6. The prefabricated pile cap for static load of a turnover pile foundation according to claim 5, characterized in that: Four ribs (604) are annularly welded between the side surface of the column (601) and the top plate (602) and the bottom plate (603).

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