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Design and construction method of pile foundation in karst developed area

A construction method and karst technology, applied in the field of pile foundation design and construction in karst-developed areas, can solve problems such as increasing project cost, increasing construction difficulty, and increasing construction period, so as to reduce project cost, reduce construction difficulty, reduce The effect of pile length

Active Publication Date: 2020-12-01
CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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  • Application Information

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Problems solved by technology

Excessive pile length not only greatly increases the difficulty of pile construction, but also increases the project cost and the construction period

Method used

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  • Design and construction method of pile foundation in karst developed area
  • Design and construction method of pile foundation in karst developed area
  • Design and construction method of pile foundation in karst developed area

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0033] It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish information of the same type from each other. For example, "first" information may also be referred to as "second" information without departing from the scope of the present invention, and similarly, "second" information may al...

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Abstract

The invention provides a pile foundation design and construction method for a karst development area. The pile foundation design and construction method comprises the following steps: primary advanced drilling is conducted on the corresponding position of a to-be-constructed frame column to form a first drill hole; the geology of the first drill hole is surveyed, a geologic column of the first drill hole is drawn, the depth of the stable rock surface of the first drill hole is determined, the first theoretical pile length is calculated, and when the theoretical pile length is larger than a preset value, two second drill holes are drilled in the two sides of the first drill hole correspondingly; and the geology of the second drill holes is surveyed, a geologic column of the second drill holes is drawn, the depth of the stable rock surface of the second drill holes is determined, the second theoretical pile length is calculated, data of the theoretical pile length are compared, the drill hole with the minimum theoretical pile length is selected as the pile driving position, pile driving is conducted, and a bearing platform, a transfer beam and a joining beam are arranged on a pile to form a pile foundation. By adopting the pile foundation design and construction method for the karst development area, the pile length can be decreased to the utmost extent, the engineering construction cost is lowered, and the construction period is shortened.

Description

technical field [0001] The invention relates to the technical field of pile foundation construction, in particular to a pile foundation design and construction method in a karst-developed area. Background technique [0002] In engineering construction, it is not uncommon to encounter karst foundations, especially in areas where karst caves are widely distributed and the scale of karst caves is large. If correct technical treatment is not carried out, disasters such as karst subsidence will occur. [0003] In the prior art, the most widely used foundation treatment method in karst areas is the form of pile foundation, which generally adopts the form of building caps and connecting beams on cast-in-situ piles to form pile foundations. The positions corresponding to the frame columns of the building need piles to play the role of fixed support, so the number of piles has a corresponding relationship with the number of corresponding positions of the frame columns. It is common t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D1/02E02D27/14E02D27/32
CPCE02D1/02E02D27/14E02D27/32
Inventor 陈兆雄尹春明黄丹尹谦钧陶林惠张略秋周雷靖
Owner CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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