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Grouting Consolidation Method of Prefabricated Piles Guided by Full-Casing Drilling

A technology of prefabricated piles and full sleeves, which is applied in the direction of sheet pile walls, foundation structure engineering, construction, etc., can solve the problems of long engineering period, high engineering cost, and large engineering volume, so as to reduce the difficulty of operation, solve the problem of large engineering volume, The effect of smooth extraction process

Active Publication Date: 2021-04-09
高永光 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, the present invention aims to provide a kind of grouting consolidation method of full-sleeve borehole guiding prefabricated piles and prefabricated piles thereof, so as to solve the existing problems in the construction of foundations on water under various stratum conditions, especially in ocean engineering. In the construction of foundation foundation, the construction of bored pile foundation has a large amount of engineering work, a long project period and high project cost.

Method used

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  • Grouting Consolidation Method of Prefabricated Piles Guided by Full-Casing Drilling
  • Grouting Consolidation Method of Prefabricated Piles Guided by Full-Casing Drilling
  • Grouting Consolidation Method of Prefabricated Piles Guided by Full-Casing Drilling

Examples

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Effect test

Embodiment 1

[0057] This embodiment provides a method for grouting consolidation of prefabricated piles guided by full-casing drilling, and its engineering implementation environment is as follows Figure 1 to Figure 7 As shown, in the water area construction process with loose layer 8 and bedrock layer 9 successively at the bottom from top to bottom, the grouting consolidation method of the prefabricated pile guided by full casing drilling includes the following steps:

[0058] Step S1, sinking the casing 1 through the water surface 10 to the loose layer 8, and drilling the loose layer 8 to drive the casing 1 through the loose layer 8 to form a loose layer drilling 14;

[0059] Remove the water and sediment in the casing 1;

[0060] Sink the drill bit of the drilling rig to the bedrock layer through the inner cavity of the casing 1, and drill holes in the bedrock layer to form the bedrock borehole 13 in the bedrock layer;

[0061] Step S2, removing the drill bit of the drilling rig from...

Embodiment 2

[0075] The difference between this embodiment and Embodiment 1 is that the engineering implementation environment is a method for grouting consolidation of prefabricated piles guided by full-casing drilling during construction in waters with a bedrock layer 9 at the bottom, including the following steps:

[0076] Step S1, sinking the casing 1 to the bedrock layer; sinking the drill bit of the drilling rig through the inner cavity of the casing 1 to the bedrock layer, and drilling holes in the bedrock layer to drill holes in the bedrock layer forming said bedrock borehole 13;

[0077] Step S2, at this time, the lower end of the casing 1 enters the opening edge of the inner cavity of the bedrock borehole 13, so that the end of the casing 1 is socketed with the opening edge of the bedrock borehole 13, and the The drill bit of the drilling rig is sequentially removed from the bedrock borehole 13 and the casing 1;

[0078] S3, pre-inject grout 3 into the borehole 2; before the gro...

Embodiment 3

[0081] The difference between this embodiment and Embodiment 1 is that the engineering implementation environment is a method of grouting consolidation of prefabricated piles guided by full casing drilling during construction in waters with a loose layer 8 at the bottom, including the following steps:

[0082] Step S1, sinking the casing 1 to the loose layer 8, drilling the loose layer 8 to form a loose layer drilling 14, and driving the casing 1 into the loose layer 8; The sediment in the casing 1 is removed;

[0083] Step S2, the casing 1 is accommodated in the loose layer borehole 14;

[0084] Step S3, implanting the prefabricated pile 4 into the loose layer borehole 14, so that the prefabricated pile 4 reaches the bottom of the loose layer borehole 14;

[0085] S4, lifting the casing 1, during the ascent of the casing 1, the grouting channel 5 on the prefabricated pile 4 continues to inject grout into the borehole 14 of the loose layer; the grouting channel 5 includes: lo...

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Abstract

A method for grouting consolidation of prefabricated piles guided by full-casing drilling, comprising the following steps: S1, driving a drilling rig carrying a casing (1) to carry out drilling construction, drilling construction to a preset hole depth, and forming a borehole (2); S2, the casing (1) is accommodated in the borehole (2); S3, the prefabricated pile (4) is implanted into the borehole (2), so that the prefabricated pile (4) reaches the borehole (2) bottom of the hole; S4, inject grout (3) into the borehole (2); S5, pull out the casing (1), so that the inner cavity of the prefabricated pile (4) and the borehole (2) are fixed and glued together structure. Also provided is a prefabricated pile, comprising a pile body and a grouting channel (5) arranged on the pile body, the liquid inlet end (11) of the grouting channel (5) extends out of the upper end surface of the pile body, and the grouting channel (5) ) The liquid outlet end (12) extends out of the lower end surface of the pile body and / or the side surface of the pile body.

Description

technical field [0001] The invention relates to the technical field of foundations, in particular to a method for grouting and consolidation of prefabricated piles guided by full-casing drilling and the prefabricated piles. Background technique [0002] At present, in the field of foundation engineering in water engineering, especially in the field of marine engineering technology, the pile foundations in rivers, lakes and seas are mostly bored piles or hammered steel pipe piles. The most common construction scheme and method of bored piles are Build islands with cofferdams or use steel casings to assist in the construction work. Cofferdam island construction is also called island construction and core filling. In order to solve the problem of difficult construction in the marine environment, it is necessary to fill the area surrounded by cofferdams with soil, sand and gravel, and then carry out the drilling and pouring process. Moreover, after the construction of the bored...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/62E02D11/00
CPCE02D5/62E02D11/00E02D2250/0023
Inventor 高永光高云飞
Owner 高永光
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