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Double-hole grouting construction method

A construction method and grouting technology, which are applied in the direction of foundation structure engineering, sheet pile wall, foundation structure repair, etc. The construction method is simple and effective, the judgment method is scientific, and the construction cost is low.

Inactive Publication Date: 2019-08-09
NO 3 ENG COMPANY OF CHINA RAILWAY NO 8 ENG GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of the existing cavity grouting method is the unreasonable mix ratio of the grout on site and the unsatisfactory grouting pressure, so that the grouting effect cannot reach the expected goal
The test results show that the insufficient pressure after the on-site grouting can easily lead to the failure to effectively deal with the segregated cavities, and there are still cavities in the local small and uncompacted parts after the grouting

Method used

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Embodiment Construction

[0033] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0034] Any feature disclosed in this specification, unless specifically stated, can be replaced by other alternative features that are equivalent or have similar purposes. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0035] see Figure 1-3 , the present invention provides a double-hole grouting construction method, which adopts two sets of grouting sealing plugs with the same structure, one main and one auxiliary, the grouting sealing plugs are in the shape of a truncated cone with a large top and a small bottom, including a top plate 1 and a truncated circular elastic middle Body 2, bottom plate 3 and elastic bolt 4, elastic bolt 4 runs through top plate 1, elastic intermediate body 2 and bottom plate 3, adjusti...

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Abstract

The invention discloses a double-hole grouting construction method, and relates to a grouting sealing plug and a grouting system. The grouting sealing plug is in a shape of a circular table with the large upper part and the small lower part, and comprises a top plate, a circular-table-shaped elastic intermediate body, a bottom plate and a tightness bolt; the tightness bolt penetrates through the top plate, the elastic intermediate body and the bottom plate, and the distance between the top plate and the bottom plate can be changed by adjusting the tightness bolt; and a slurry feeding short pipe and a slurry discharging short pipe penetrating through the top plate, the elastic intermediate body and the bottom plate are arranged on the grouting sealing plug. The grouting system adopts a maingrouting sealing plug and an auxiliary grouting sealing plug which are the same in structure. According to the double-hole grouting construction method, a concrete structure which is unqualified or low in quality can be quickly and effectively subjected to double-hole grouting reinforcing treatment, the problem that specification requirements are not met, for example, sediment clearing is incomplete, and grouting is incompact is solved, the grouting quality is good, the construction method is simple and effective, and the construction cost is low.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a grouting sealing plug, and further to a double-hole grouting construction method. Background technique [0002] With the rapid development of highway construction in my country, there are higher requirements for construction standards. However, in the existing pile foundation construction, due to the constraints of hydrogeological conditions, construction technology, and design standards, some defective piles will inevitably appear. [0003] In the construction of cast-in-place piles, the pile foundation concrete is not compact and voids are a common problem, especially in underwater cast-in-place piles, and most of them are local segregation voids caused by groundwater erosion. The main disadvantages of the existing cavity grouting methods are that the mixing ratio of the grout on site is unreasonable and the grouting pressure is not satisfactory, so that the grouting effe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/64E02D15/00E02D15/06E02D37/00
CPCE02D5/64E02D15/00E02D15/06E02D37/00
Inventor 李俊荣马文荣吴德先王正刘长春舒平兰勇先承斌王正录张正洪黄昌浩王浩邓云松文道华
Owner NO 3 ENG COMPANY OF CHINA RAILWAY NO 8 ENG GRP
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