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Construction method for grouting curtain combined with steel reinforced concrete guard ring

A technology of reinforced concrete and grouting curtain, which is applied in soil protection, infrastructure engineering, construction and other directions, can solve the problems of high construction cost, large amount of steel used for steel pipe curtain piles, and many construction equipment, etc., and achieves low cost and saving. Cost, good anti-seepage effect

Inactive Publication Date: 2008-06-18
THE 2ND ENG CO LTD MBEC
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AI Technical Summary

Problems solved by technology

Steel pipe curtain piles use a large amount of steel, and more construction equipment is invested, resulting in higher construction costs

Method used

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  • Construction method for grouting curtain combined with steel reinforced concrete guard ring

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Embodiment Construction

[0013] Referring to attached drawing 1, the grouting curtain construction method: first use the engineering drilling rig and the grouting machine to carry out the grouting curtain construction, consolidate the soil around the cofferdam to meet the requirements of water stop and partial wall consolidation, and wait for the bored pile construction to be completed 1. After the strength of the curtain cement slurry meets the requirements, carry out excavation and support in stages until the bottom of the pit. Then make a concrete cushion, install the cap reinforcement and formwork, and pour the cap concrete.

[0014] In the construction method of grouting flow operation, the drilling and grouting are divided into two groups, the front one forms the hole, the back one group grouting, and the two groups work in parallel.

[0015] Layout of grouting holes: The curtain adopts two rows of grouting holes, the diameter of the inner row is 25.68m, the diameter of the outer row is 27.2m, t...

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Abstract

The present invention relates to a construction method by which grout curtains are combined with reinforced concrete cages. The construction of a grout curtain is carried out by an engineering driller and a grouter as the construction of drilled piles is carried out, a foundation ditch is dug layer by layer while the reinforced concrete cages are constructed, the soil body on the periphery of a cofferdam is concreted, stepped excavation and stepped shoring are carried out till the bottom of the foundation ditch, and after the construction of the drilled piles is finished, the construction of a bearing platform is carried out. The curtain formed by grouting is waterproof, the reinforced concrete cages are constructed while the bearing platform foundation ditch is dug, so the soil pressure, water pressure and unbalanced construction load generated by the excavation of the foundation ditch are resisted. The construction of the grout curtain can be carried out as the construction of drilled piles is carried out, the foundation ditch is dug layer by layer while the reinforced concrete cages are constructed, consequently, the construction period is effectively shortened and the construction equipment which is put into use is reduced. The construction by reinforced concrete caissons, steel cofferdams and steel plate piles is difficult, the present invention can easily resolve the problem, and meanwhile, according to the geological conditions, the construction of the bearing platform can apply non-bottom sealing construction, thus saving the cost.

Description

technical field [0001] The invention relates to a construction method of a grouting curtain combined with a reinforced concrete retaining ring, which belongs to the technical field of large-scale foundation construction. Background technique [0002] In the prior art, for the construction of caps that are deeply embedded and have groundwater, methods such as double-wall steel cofferdam, concrete caisson, steel pipe pile curtain cofferdam and grouting curtain cofferdam construction are generally used. Among them, the double-wall steel cofferdam and the concrete caisson construction method are prone to inclination due to the large volume of the cofferdam and the sinking in complex geological places. Steel pipe curtain piles use a large amount of steel, and more construction equipment is invested, resulting in higher construction costs. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art, and propose a cons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/18E02D3/12
Inventor 农代培全建设陈理平高君福邱训兵张家升王汉平杨齐海季跃华李纲刘学明罗建勋
Owner THE 2ND ENG CO LTD MBEC
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