Combined steel casing and construction method of waterborne drilled pile based on same

A construction method and technology for steel casings, which are applied in infrastructure engineering, sheet pile walls, buildings, etc., can solve the problems of large amount of steel, high cost, and steel casings cannot be used repeatedly, so as to reduce the amount of materials and reduce the cost of steel casings. The effect of construction cost

Active Publication Date: 2011-09-21
CCCC SECOND HARBOR ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The steel casing of this structure cannot be used repeatedly, and the material for re

Method used

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  • Combined steel casing and construction method of waterborne drilled pile based on same
  • Combined steel casing and construction method of waterborne drilled pile based on same
  • Combined steel casing and construction method of waterborne drilled pile based on same

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[0017] This embodiment is used to interpret the claims of the invention, and the protection scope of the invention is not limited to the structure described below. Structural changes different from the following structural changes made by those skilled in the art in the technical solution of the present invention belong to the protection scope of the present invention.

[0018] Such as figure 1 As shown, the outer steel protective tube 7 is welded into an integral steel protective tube, which has the same structure as the existing steel protective tube. The outer steel sheath 7 is provided with an inner steel sheath 8, and there is a gap 9 between the inner steel sheath 8 and the outer steel sheath 7. The inner steel protective cylinder 8 includes a steel protective cylinder body 1 which is rolled from a thin steel plate. The wall of the steel protective cylinder is provided with an opening contact seam 2 along the axial direction, and the gap of the opening contact seam 2 is 0-5...

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Abstract

The invention discloses a combined steel casing and a construction method of a waterborne drilled pile based on the same. The combined steel casing comprises an outer steel casing and an inner steel casing which is arranged in the outer steel casing and comprises a steel casing body; the steel casing wall is provided with an opening contact seam along the axial direction; lockpin devices of the opening contact seam are alternately arranged on the casing wall at both sides of the opening contact seam; the lockpin devices comprise locking sleeves respectively connected with the casing wall of the opening contact seam; and the locking sleeves at both sides are connected by bolts. The drilled pile can be constructed in the inner steel casing capable of being opened and closed for repeated use. After the final setting construction of the drilled pile is finished, the bolts of the lockpin devices of the steel casing capable of being opened and closed for repeated use are drawn out, the inner steel casing capable of being opened and closed is pulled out, and the outer steel casing can also be pulled out. The steel casing can be pulled out for repeated use, greatly reduces the consumptionof the steel casing and decreases the construction cost.

Description

technical field [0001] The invention belongs to foundation construction methods, and in particular relates to a construction method of bored piles above water. Background technique [0002] At present, the construction method of bored piles on the water is to set up a drilling platform, sink and place a steel casing to form a hole, then clean the hole, and carry out pile foundation construction in the steel casing. Part of the steel casing is cut off, and the steel casing in contact with the pile body is not removed. The steel casing of this structure cannot be used repeatedly, and the materials for recycling the steel casing are few, the consumption of steel is large, and the cost is high. Contents of the invention [0003] The object of the present invention is to provide a construction method for above-water bored piles based on a combined steel casing and the combined steel casing to solve the above problems. [0004] Achieving one of the objectives of the present in...

Claims

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Application Information

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IPC IPC(8): E02D5/40E02D5/66
Inventor 余道胜王海军陈军贺涛张军王海滨李毅王仁茂
Owner CCCC SECOND HARBOR ENG
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