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Static pressure sunken tube pedestal concrete pile construction method

A technology of concrete piles and construction methods, applied in sheet pile walls, foundation structure engineering, construction and other directions, can solve the problems of poor bearing capacity of concrete piles, high noise, large vibration, etc., achieve scientific and reasonable construction methods, reduce construction noise and Vibration force, convenient construction effect

Inactive Publication Date: 2010-09-08
齐庆国
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention is used to overcome the problems of large noise, large vibration and poor bearing capacity of concrete piles in the existing construction method of concrete piles, and provides a construction method of concrete piles with static pressure sinking tube and bottom expansion

Method used

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  • Static pressure sunken tube pedestal concrete pile construction method
  • Static pressure sunken tube pedestal concrete pile construction method
  • Static pressure sunken tube pedestal concrete pile construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A. Prefabricated pile: According to the design requirements, a cylindrical reinforced concrete pile with a length of 5000mm, a diameter of 500mm, a force-bearing vertical hole diameter of 160mm, and three force-bearing horizontal holes of 500×150mm was prefabricated.

[0038] B. Install the static pile driver: After the static pile driver is in place at the set position, first anchor the anchor rod of the anchor mechanism into the soil layer to open the anchor thorn, and position and fix the static pile driver;

[0039] C. Pile pressing: Operate the static pile pressing machine to lift the prefabricated reinforced concrete piles with force-holding holes, and the prefabricated concrete piles are directly pressed to the design elevation of 5.0m by the hydraulic clamping and swinging lifting mechanism of the pile pressing machine. Deep, the static pressure displayed by the intelligent detection display of the pile driver stops when it reaches 5600KN;

[0040] D. Grouting i...

Embodiment 2

[0043] Referring to accompanying drawing 1-8, the construction method of this static pressure sinking tube expanding the bottom concrete pile, comprises following operation:

[0044] A. Prefabricated piles: According to the design requirements, prefabricated (see Figure 9 and Figure 10) with a length of 9000mm, a diameter of 500mm, a force-bearing longitudinal hole diameter of 160mm, and 7 force-bearing horizontal holes of 260×160mm with force-holding holes Cylindrical reinforced concrete pile body 1;

[0045] B. Install the static pile driver: After the static pile driver 2 is in place at the set position, first anchor the anchor rod of the anchor mechanism into the soil layer to open the anchor thorn, and position and fix the static pile driver;

[0046] A', Lower Casing: Operate the hydraulic pressure holding and swinging lifting mechanism of the static pile driver 2, and press the casing together with the static hydraulic hammer 4 in the casing 3 into the ground 9m synchro...

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Abstract

A construction method for static pressure sinking pipe bottom-expanded concrete pile is disclosed, the method is used for solving the problems in the current construction like large vibration force and noise, and inferior pile bearing force. The method is carried out according to the following steps of: A, pre-casting pile: reinforced concrete pile with a force-holding hole is pre-cast according to design requirement; B, installing a static force pile driver; C, pressing piles: the static force pile driver is operated to press the pre-cast concrete pile to the designed standard height underground; D, grouting to form the pile: a sealing cover is installed on top of the pre-cast concrete pile pressed underground, a high pressure grouter is used to grout concrete along the force-holding hole of the pre-cast concrete pile so that the concrete slurry extruded by the force-holding hole of the pre-cast concrete pile forms a pile wing and a pile bottom-expanded body, and forms a solid whole with the soil layer surrounding the pile body. The invention has the advantages of scientific and reasonable construction method and convenient construction, which not only can reduce the vibration force and construction noise greatly, but improve the side-bending resistance and integral bearing force of the concrete pile to a large extent.

Description

technical field [0001] The invention belongs to a construction method of concrete piles in building foundation engineering technology. Background technique [0002] With the increasing development of the construction industry, the technical requirements for construction foundation engineering, especially foundation pile foundation, are also constantly improving. In the known technology, the concrete pile is usually hammered with a heavy hammer, and the steel wire rope connected by the hoist is used to pull down the casing through a pulley, and the pile hole is filled with bricks and stones with a heavy hammer to form an enlarged head at the bottom of the pile hole. Then place the reinforcement cage, pour the concrete, and put out the casing again to complete the construction of the concrete pile. Because the filling material in the pile hole is hammered with a heavy hammer, it will generate a lot of noise and vibration force, destroy the soil structure around the pile body,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/44E02D5/30E02D5/48E02D7/20
Inventor 齐庆国王金坤刘金脉
Owner 齐庆国