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Pile bottom grouting cavity and use method, and poured pile body and construction method of poured pile body

A technology of grouting cavity and cast-in-place pile, which is applied in the direction of sheet pile wall, foundation structure engineering, building, etc. It can solve the problems of excessive sediment, affecting construction quality, and hole wall collapse, so as to prevent hole wall collapse, improve construction quality and progress effect

Active Publication Date: 2020-03-20
高永光 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the present invention aims to provide a grouting cavity at the bottom of the pile and its use method, cast-in-place pile body and construction method thereof, so as to solve the problems caused by holes in the cast-in-situ pile with grouting capsules in the construction process of bored cast-in-place piles in the prior art. Wall collapse and sediment exceeding the standard seriously affect the construction quality

Method used

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  • Pile bottom grouting cavity and use method, and poured pile body and construction method of poured pile body
  • Pile bottom grouting cavity and use method, and poured pile body and construction method of poured pile body
  • Pile bottom grouting cavity and use method, and poured pile body and construction method of poured pile body

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Embodiment 1

[0086] The cast-in-place pile provided in this embodiment, such as Figure 4 and Figure 5 shown, which includes:

[0087] Pile bottom grouting cavity, such as Figures 1 to 3 shown, which includes:

[0088] A fixed plate 4, the fixed plate 4 is provided with a passage hole 5 communicating with the bottom of the accommodating hole 1 for the mud and sediment in the accommodating hole 1 to pass through the fixed plate 4. There is one hole 5, which is arranged at the central position of the fixing plate 4, and the fixing plate 4 forms an annular plate-shaped structure. Through the passage hole 5 set in the center of the fixed plate 4, when the grouting cavity at the bottom of the pile sinks toward the bottom of the accommodation hole 1, the mud water and air in the accommodation hole 1 will enter through the passage hole 5. Above the grouting cavity at the bottom of the pile, no vortex that damages the hole wall will be formed between the grouting cavity at the bottom of the ...

Embodiment 2

[0116] The difference between this embodiment and embodiment 1 is that, as Figure 7 As shown, the grouting structure is used to inject grout into the passage hole 5 and the inner ring space of the annular grouting capsule 2 , and the grouting structure is two grouting pipes 17 . The fixing plate 4 has a slurry storage chamber 19 communicating with the passage hole 5 , and the slurry replenishing pipe 17 is in communication with the slurry inlet 21 of the slurry storage chamber 19 . The grout feeding pipe 17 is provided with a second one-way valve for controlling the connection or disconnection between the grout feeding pipe 17 and the passage hole 5 . By injecting grout to the bottom of the pile through the through hole 5 through the grouting structure, the cement slurry content at the bottom of the pile can be effectively increased, and the quality of the concrete at the bottom of the pile can be improved. The grouting in the passing hole 5 has the following advantages: 1. ...

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Abstract

Disclosed in the present invention are a pile bottom grouting cavity and a use method, and a poured pile body and a construction method of a poured pile body. The pile bottom grouting cavity comprises: a grouting capsule having an expansion state in which the interior thereof is filled with slurry to bear a pile body and a contraction state in which the interior thereof is empty; a grouting tube in communication with the inner chamber of the grouting capsule so as to grout the grouting capsule; and a fixing plate, wherein the grouting capsule is disposed on the fixing plate, the fixing plate is provided with a through hole communicating with the bottom of a containing hole for the mud and / or sediment in the containing hole to pass through the fixing plate. The pile bottom grouting cavity solves the problem that the cast-in-place pile with grouting capsules in the prior art causes a hole wall to collapse and the sediment to exceed a standard during the construction process of a bored pile, which seriously affects the construction quality.

Description

technical field [0001] The invention relates to the technical field of foundations, in particular to a grouting cavity at the bottom of a pile and a method for using it, a grouting pile body and a construction method thereof. Background technique [0002] At present, in the foundation field, open grouting is generally used in the grouting after pouring piles. However, the open grouting has the problems of low controllability of the grout injection area, the formation of the enlarged head of the pile, the compaction effect on the surrounding strata, and the small increase in the bearing capacity of the pile. [0003] In order to solve the problem of open grouting. In the prior art, a grouting device for cast-in-situ piles with a grouting capsule is disclosed, which includes a grouting pipe, a steel floor, a grouting interface, and a grouting capsule, and the grouting interface extends above and below the steel floor. The upper part of the grouting interface is connected wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/62E02D15/04
CPCE02D5/62E02D15/04E02D2250/0023
Inventor 高永光高云飞
Owner 高永光