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A construction method for fracture of post-mounted concrete pile head

A construction method and concrete pile head technology, which is applied in sheet pile walls, foundation structure engineering, construction, etc., can solve the problems of workers' occupational health and safety, increase engineering safety risks, dust and noise pollution, etc., and achieve the improvement of engineering quality , Simplify construction difficulty and save working time

Active Publication Date: 2022-03-08
徐胜祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the pile top concrete is usually manually chiseled out, which is time-consuming and labor-intensive, and generates dust and noise pollution, which affects the occupational health and safety of workers and increases the safety risk of the project.

Method used

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  • A construction method for fracture of post-mounted concrete pile head
  • A construction method for fracture of post-mounted concrete pile head
  • A construction method for fracture of post-mounted concrete pile head

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A construction method for post-mounted concrete pile head fracture, such as figure 1 shown, including the following steps,

[0033] A. The upper end of the reinforcement cage 1 is covered with a wrapping layer 11, then the reinforcement cage 1 is placed, and concrete is poured;

[0034] B. Before the concrete is solidified, lower the breaking device 2; the breaking device 2 includes a metal cover 22 and a curved shell 23 arranged from top to bottom. There are also a first jack 25 and a second jack 26 from top to bottom, the upper side of the first jack 25 is provided with a metal cover 22, and the lower side of the second jack 26 is in contact with the bottom of the curved shell 23;

[0035] C. After the concrete solidifies and reaches the initial strength, pressurize the annular water pressure chamber 24 to break the concrete on the layer where the metal cover 22 is located;

[0036] D. Start the first jack 25 after the excavation of the foundation pit, lift the conc...

Embodiment 2

[0042] A construction method for post-mounted concrete pile head fracture, such as figure 2 shown, including the following steps,

[0043] A. The upper end of the reinforcement cage 1 is covered with a wrapping layer 11, then the reinforcement cage 1 is placed, and concrete is poured;

[0044] B. Before the concrete is solidified, lower the breaking device 2; the breaking device 2 includes a metal cover 22 and a curved shell 23 arranged from top to bottom. There are also a first jack 25 and a second jack 26 from top to bottom, the upper side of the first jack 25 is provided with a metal cover 22, and the lower side of the second jack 26 is in contact with the bottom of the curved shell 23;

[0045] C. After the concrete solidifies and reaches the initial strength, pressurize the annular water pressure chamber 24 to break the concrete on the layer where the metal cover 22 is located;

[0046] D. Start the first jack 25 after the excavation of the foundation pit, lift the con...

Embodiment 3

[0053] A construction method for post-mounted concrete pile head fracture, such as image 3 shown, including the following steps,

[0054] A. The upper end of the reinforcement cage 1 is covered with a wrapping layer 11, then the reinforcement cage 1 is placed, and concrete is poured;

[0055] B. Before the concrete is solidified, lower the breaking device 2; the breaking device 2 includes a metal cover 22 and a curved shell 23 arranged from top to bottom. There are also a first jack 25 and a second jack 26 from top to bottom, the upper side of the first jack 25 is provided with a metal cover 22, and the lower side of the second jack 26 is in contact with the bottom of the curved shell 23;

[0056] C. After the concrete solidifies and reaches the initial strength, pressurize the annular water pressure chamber 24 to break the concrete on the layer where the metal cover 22 is located;

[0057] D. Start the first jack 25 after the excavation of the foundation pit, lift the conc...

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Abstract

The invention relates to the technical field of building pile foundations, and discloses a construction method for fracture of a post-mounted concrete pile head, comprising the following steps: A. the upper end of a reinforcement cage (1) is covered with a wrapping layer (11); B. before the concrete is solidified, it is lowered and broken device (2), lower the metal cover (22) of the breaking device (2) to the same horizontal position as the pre-section (3); C. After the concrete is solidified, pressurize the annular water pressure chamber (24) to make the metal cover ( 22) The concrete on the floor is fractured; D. start the first jack (25) again to lift the concrete on the upper side of the metal cover (22); E. then start the second jack (26) to make the breaking device ( 2) Break away from the pile foundation concrete. The annular water pressure chamber exerts pressure on the surrounding concrete, causing the concrete of the pre-section to break. Then the first jack produces upward pressure on the metal cover, which facilitates the lifting of the upper concrete on the broken pre-section surface; it simplifies the construction difficulty for workers to pry the upper concrete on the pre-section surface, and saves working time.

Description

technical field [0001] The invention relates to the technical field of bored piles for construction pile foundations, in particular to a construction method for fractured post-mounted concrete pile heads. Background technique [0002] When pouring the pile holes, the concrete on the uppermost layer will carry a large amount of slag or impurities. In order to prevent the slag or impurities from affecting the concrete structure strength of the poured pile foundation, it is necessary to pour a certain height of concrete at the top of the pile foundation design height. And after excavation of the foundation pit, chisel away the over-poured concrete. In the prior art, the concrete at the top of the pile is usually chiseled manually, which is time-consuming and labor-intensive, and generates dust and noise pollution, which affects the occupational health and safety of workers and increases the safety risk of the project. Contents of the invention [0003] Aiming at the disadva...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D9/00E02D5/34
CPCE02D9/005E02D5/34E02D2300/0026
Inventor 徐胜祥刘庆洋毛义华杨辉张文辉丁富军高楠楠邵一鸣邹鹤民罗如登黄玉良唐谈杨小春吴佳利徐普恩
Owner 徐胜祥