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Pile end bottom grouting device, cast-in-place pile and construction method of cast-in-place pile

A technology of grouting device and pile end, which is applied in the field of foundation foundation, can solve the problems such as the timing and condition control of grouting cavity rupture, and achieve the effects of improving ultimate bearing capacity, eliminating pile bottom settlement, and reducing project cost

Pending Publication Date: 2021-12-03
高永光 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art that the timing and conditions of grouting chamber rupture are difficult to control, thereby providing a pile end bottom grouting device that can accurately control the timing and conditions of grouting chamber rupture , cast-in-situ pile and its construction method

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  • Pile end bottom grouting device, cast-in-place pile and construction method of cast-in-place pile
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  • Pile end bottom grouting device, cast-in-place pile and construction method of cast-in-place pile

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Embodiment Construction

[0061] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0062] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. ...

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Abstract

The invention relates to the technical field of foundations, in particular to a pile end bottom grouting device, a cast-in-place pile and a construction method of the cast-in-place pile. The invention aims at overcoming the defect that in the prior art, the grouting cavity breaking opportunity and conditions are difficult to control. The pile end bottom grouting device comprises a fixing plate, and a grout storage bag fixed to the fixing plate, wherein the grout storage bag forms a containing cavity suitable for containing grout, or the grout storage bag and the fixing plate define the containing cavity suitable for containing the grout, and the grout storage bag has a full state in which the grout is filled to bear a pile body and a closed state inside which the grout is hollow, and a fixed ultimate pressure-bearing strength value is preset in the grout storage bag, and the volume of the grout storage bag is fixed in the full state.

Description

technical field [0001] The invention relates to the technical field of foundations, in particular to a grouting device at the bottom of a pile end, a cast-in-place pile and a construction method thereof. Background technique [0002] At present, in the foundation field, there are mainly two types of grouting after pouring pile ends: open grouting and closed grouting. Among them, closed grouting mostly adopts steel plate capsule grouting, as described in the invention patent with the announcement number CN110896646B and the name "pile bottom grouting device and its use method and pouring pile body and its construction method", including grouting capsule, The grouting pipe and the fixing plate are grouted into the grouting capsule through the grouting pipe after the cast-in-situ pile is poured to form the enlarged head at the bottom of the pile. However, the grouting capsule expands with the increase of pressure, and the relationship between the grouting pressure and the grou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/62E02D15/04E02D5/34E02D31/02
CPCE02D5/62E02D15/04E02D5/34E02D31/02
Inventor 高永光高云飞
Owner 高永光
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