Sediment-free construction device for cast-in-place bored pile

A technology of bored piles and construction devices, applied in sheet pile walls, foundation structure engineering, construction, etc., can solve problems affecting the quality of piles, achieve the effects of improving the quality of pile foundations, shortening the impact distance, and improving the disturbance effect

Pending Publication Date: 2020-07-17
安徽省建设工程测试研究院有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a construction device for bored piles

Method used

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  • Sediment-free construction device for cast-in-place bored pile
  • Sediment-free construction device for cast-in-place bored pile
  • Sediment-free construction device for cast-in-place bored pile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0030] refer to image 3In this embodiment 1, the waterproof plug is specifically composed of a base 6 and a plurality of arc-shaped enclosures 7, but when the waterproof plug is stably installed in the cast-in-situ pile 1, the moisture in the upper part of the concrete can easily pass through the arc-shaped enclosure. Seepage from the joint between the plate 7 and the base 6 is not conducive to maintaining the water-material ratio of the concrete in the pouring bucket, and affects the quality of the concrete. Therefore, in order to overcome the above defects, a bored pile without sediment construction is provided in this embodiment The device and equipment structure are basically the same as those in Example 1, the main difference being the waterproof plug.

[0031] In this embodiment, the base 6 of the waterproof plug is specifically composed of a bottom plate 8 and a cylindrical baffle 9 fixedly installed on the top thereof, and the arc-shaped enclosure 7 is rotatably conne...

Embodiment 3

[0035] combine Figure 4 , in Example 2, the bottom of the bottom plate 8 is a horizontal plane, so that when it falls out of the bottom of the cast-in-place pile 1 and contacts the sediment muddy liquid, the impact force is too large, which is unfavorable for it to fall into the water smoothly, and the muddy liquid is easy to mix with the concrete, reducing the concrete at the bottom of the pile. Therefore, in order to overcome the above-mentioned defects, a bored pile without sediment construction device is provided in this embodiment. The structure of this device is basically the same as that of Embodiment 2, except that the bottom plate 8 in this embodiment is specifically inverted conical structure.

[0036] Through the above arrangement, when the bottom plate 8 impacts the turbid liquid, the turbid liquid can be guided by the bottom tip of the bottom plate 8, reducing the impact force between the two, so that the concrete flowing out of the cast-in-place pile 1 at the be...

Embodiment 4

[0038] In Examples 1-3, the bottom of the cast-in-place pile 1 always maintains a certain position with the bottom of the pile. The purpose is to allow the concrete to flow out effectively in the later stage and fill the pile hole, so as to realize the purpose of pouring into a pile. The concrete at the bottom of cast-in-situ pile 1 has a certain distance from the bottom of the pile all the time, so that the concrete must have the possibility of impact mixing with the scum and turbid liquid. After the two are mixed, the quality of the pile bottom of the pile must be affected. Therefore, in order to further To improve the quality of piles, this embodiment provides a construction device for bored piles without sediment. The equipment structure is basically the same as that of Embodiment 3, and the main difference is that in this embodiment:

[0039] combine Figure 5 The bottom end of the cast-in-place pile 1 is connected to the diversion enclosure 10 sleeved on its outer wall t...

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Abstract

The invention discloses a sediment-free construction device for a cast-in-place bored pile, and relates to a cast-in-place structure. The sediment-free construction device for the cast-in-place boredpile comprises a cast-in-place pile with the top communicating with a pouring hopper; a high-pressure pipe is arranged on the outer wall of the cast-in-place pile; the top end of the high-pressure pipe is connected with an air pump; a waterproof bolt capable of sliding up and down inside the cast-in-place pile is arranged in the cast-in-place pile; the waterproof bolt is hung at the top of an inner cavity of the cast-in-place pile through a hanging structure; the air pump is in signal control with a controller; the waterproof bolt specifically comprises a base and a cylindrical coaming with the outer diameter identical with the inner diameter of the cast-in-place pile; the cylindrical coaming specifically comprises multiple arc-shaped coamings; and the center of the bottom end of each arc-shaped coaming is hinged to the base. By the aid of the device, the strength of a pile foundation bottom formed by the cast-in-place pile can be improved effectively, and the influence caused by high-pressure air flow and turbid solutions on a pile body can be avoided.

Description

technical field [0001] The invention relates to a construction device for construction engineering, in particular to a construction device for bored cast-in-place piles. Background technique [0002] The principle of sediment control at the bottom of traditional bored piles is to control the thickness of the sediment before pouring concrete, and use the impact force of the initial square meter during the falling process of the conduit to raise a small amount of sediment at the bottom of the pile, so that the concrete slurry with a larger specific gravity will sink into the pile. At the bottom of the pile, the bottom opening of the conduit is buried in the concrete surface, and the sediment floats above the concrete surface. Finally, relying on the strong pressure of the concrete in the conduit, the sediment and scum are gradually pushed to the top of the pile. [0003] However, there are still certain problems in the above-mentioned prior art. The scum cannot be completely f...

Claims

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Application Information

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IPC IPC(8): E02D13/08E02D15/04E02D5/34
CPCE02D5/34E02D13/08E02D15/04
Inventor 李天宝曹光暄张蕊
Owner 安徽省建设工程测试研究院有限责任公司
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