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A kind of protective tube device for forming holes in building foundation and construction method thereof

A construction method and casing technology, applied in construction, foundation structure engineering, sheet pile walls, etc., can solve the problems affecting the construction quality and progress, difficult to form pile holes, etc., to improve the quality of holes, reduce air pressure, Apply a wide range of effects

Active Publication Date: 2016-02-17
北京波森特岩土工程有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

This geological condition makes it very difficult to form holes in the pile body during pile foundation construction. At present, it is difficult to form pile holes to the design depth with the commonly used methods such as vibrating immersed pipe, static pressure or rotary drilling, which affects the construction. quality and progress

Method used

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  • A kind of protective tube device for forming holes in building foundation and construction method thereof
  • A kind of protective tube device for forming holes in building foundation and construction method thereof

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Embodiment Construction

[0032] figure 1 is a schematic diagram of an embodiment of the parts and connections of the casing device of the present invention, the parts of the casing device being as figure 1 - Casing 1 and impact cone 2 shown in -1; figure 1 As shown in -2, at the bottom of the casing 1, insert the cylinder of the upper half of the impact cone 2 into the inside of the casing 1, and weld and fix it at the connection; figure 1 As shown in -3, the connection between the casing 1 and the impact cone 2 is welded and fixed with a strip steel plate 3; the top view sectional view of the connection between the casing 1 and the impact cone 2 is shown in figure 1 -4 shown.

[0033] figure 2 It is the process diagram of the construction method of the building foundation of an embodiment of the present invention, and it comprises the following steps, at first, as figure 2 As shown in a, place a casing 1 with an impact cone 2 at the bottom end at the pile site, and put a slender weight 4 with a...

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Abstract

The invention aims to provide a pile casing device for hole formation in building foundation and a construction method of the building foundation by adopting the pile casing device. The pile casing device for hole formation in the building foundation comprises a pile casing body formed by a round steel pipe, and is characterized in that an impact cone is arranged at the bottom end of a pile casing, the lower half part of the impact cone adopts a cone whose diameter is larger than or equal to the outer diameter of the pile casing, the sharp corner of the cone faces downwards, the upper half part adopts a cylinder whose diameter is smaller than the inner diameter of the pile casing, and the upper half part of the impact cone is inserted into the casing body from the bottom end of the pile casing and fixed into a whole in the joint position through welding or casting or bolts. The construction method of the building foundation by adopting the pile casing device comprises construction steps as follows: 1), the pile casing device is used for construction of a pile hole; (2), the pile casing is lifted up to form the pile hole; (3), pile end treatment is performed according to soil property and upper load requirements; and (4) construction of a pile body is performed.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a construction method for building foundations. Background technique [0002] In the foundation treatment of buildings, such a situation is often encountered, there are dense sandy soil layers, gravel soil layers, loess layers, gravel and pebble layers, karst-developed rock layers and cracked rock-developed strata at a certain depth below the surface. Moreover, the hardness and thickness of these soil layers are uneven. This geological condition makes it very difficult to form holes in the pile body during pile foundation construction. At present, it is difficult to form pile holes to the design depth with the commonly used methods such as vibrating immersed pipe, static pressure or rotary drilling, which affects the construction. quality and progress. Contents of the invention [0003] The present invention is proposed in order to solve the above problems, and the purpose is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/68E02D5/38E02D5/46E02D5/24
Inventor 王继忠
Owner 北京波森特岩土工程有限公司
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