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Cast-in-situ bored pile technique

A technology of bored piles and technology, which is applied in the direction of sheet pile walls, buildings, foundation structure engineering, etc., to achieve the effect of small equipment, guaranteed pile diameter size, and good forming effect

Inactive Publication Date: 2013-03-27
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the shortcomings that the existing ground treatment methods are difficult to achieve the goal of ground treatment in the limited space under the loading shed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Since the bored piles are operated under the car shed, the height of the car shed from the ground is 5.8 meters, which cannot guarantee the overall height requirement for the construction machinery to hoist the casing (3-4 meters per section), so the overall ground under the car shed is The depth of excavation is 1.4 meters to ensure that the geological drilling rig is in place to the pile position.

[0018] The steps of bored pile technology are as follows:

[0019] 1. Pile location point: according to the pile location coordinates, the total station can be used to directly release all the pile core coordinates, and the wooden piles can be placed, and the next step of construction can be carried out after review;

[0020] 2. Drilling machine in place: The drilling rig adopts a geological drilling rig. When the drilling rig is in place, it must be kept stable without tilting or displacement. The drilling rig should be tested before it is in place to ensure that the mach...

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Abstract

The invention relates to the technical field of foundation treatment and in particular relates to a cast-in-situ bored pile technique. The cast-in-situ bored pile technique comprises the following steps of: firstly, releasing a point at a pile position; secondly, placing a drilling machine in position; thirdly, repairing the point at the pile position; fourthly, mounting a pile casing and making holes; fifthly, cleaning the holes for the first time; sixthly, placing a reinforcement cage and a concrete guide pipe; seventhly, cleaning the holes for the second time; eighthly, casting and compacting concrete; ninthly, removing the guide pipe; tenthly, teeming concrete; and eleventhly, protecting a pile top. The cast-in-situ bored pile technique provided by the invention can carry out the foundation treatment in a limited space below a loading shed, pile body concrete quality and bearing capacity requirements of a bored pile can be met, and stability and safety of the ground below the loading shed are guaranteed. The cast-in-situ bored pile technique provided by the invention overcomes the defect that the existing foundation treatment method is difficult to realize a foundation treatment target in the limited space below the loading shed.

Description

Technical field: [0001] The invention relates to the technical field of foundation treatment, in particular to a bored pile technology. Background technique: [0002] Due to the weak geological conditions of the Zhongshan Minmin Oil Depot, a large area of ​​the driving site under the loading shed that has not undergone foundation treatment has subsided, and foundation treatment is required. Due to the limitation of the clear height of the shed (5.8 meters), and the installation of each refueling island equipment has been completed, large-scale pile driver equipment cannot enter, and because the average depth of the foundation silt layer is 23 meters, normal drilling with geological drilling rigs cannot meet the construction requirements , Drilling holes in the silt layer can lead to shrinkage holes, collapse holes, etc. in the holes, so the existing foundation treatment methods are difficult to achieve the foundation treatment goals in the limited space under the loading she...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/38
Inventor 霍刚赵明波张国军陈晓霞白增怀佟海滨汪澜刘晓鹏李德明李文彬耿家晨郭文勇杨浩朱传辉
Owner BC P INC CHINA NAT PETROLEUM CORP
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