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Rear-mounted concrete pile head facture construction method

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 , enhanced compactness, easy to lower the effect

Active Publication Date: 2020-06-09
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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  • Rear-mounted concrete pile head facture construction method
  • Rear-mounted concrete pile head facture construction method
  • Rear-mounted concrete pile head facture construction method

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 rear-mounted concrete pile head facture construction method. The rear-mounted concrete pile head facture construction method comprises the following steps of: A: the upper end of a reinforcement cage (1) is sheathed with a coating layer (11); B: before concrete is solidified, a fracture device (2) is lowered, the metal cover (22) of the fracture device (2) is lowered to the same horizontal position of a pre-fractured surface (3); C: after the concrete is solidified, an annular water pressure cavity (24)is pressurized, and a layer where the metal cover (22) is positioned fractures; D: a first jack (25) is started to hoist the concrete on the upper side of the metal cover (22); and E: then, a second jack (26) is started to separate the fracture device (2) from foundation concrete. The annular water pressure cavity generates pressure to the surrounding concrete to enable concrete on the pre-fractured surface to fracture, and then, the first jack generates upward pressure to the metal cover so as to be convenient to hoist the concrete on the upper side of the fractured pre-fractured surface. Therefore, construction difficulty for a worker to pry up the concrete on the upper side of the pre-fractured surface is simplified, and working condition time is saved.

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 Applications(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