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Method for treating foundation throughthrough sintered water-permeable pile

A foundation treatment and permeable pile technology, which is applied to sheet pile walls, foundation structure engineering, ceramic products, etc., can solve problems such as poor water permeability, low strength, and easy corrosion of permeable concrete piles

Active Publication Date: 2014-03-19
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, bulk piles have strong water permeability but low strength and are easy to break; rigid and semi-rigid piles have high strength but poor water permeability and slow foundation consolidation; permeable concrete piles are easy to corrode and are not suitable for coastal projects

Method used

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  • Method for treating foundation throughthrough sintered water-permeable pile
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  • Method for treating foundation throughthrough sintered water-permeable pile

Examples

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Effect test

Embodiment 1

[0041] For a road project near the sea, land reclamation is required, and the subgrade will be built after the bearing capacity of the foundation meets the requirements. The land reclamation project was built by dredging reclamation on the original basis of the coast. The geological conditions from top to bottom are plain fill, dredger fill, sand with silt, gravel silt and strong weathered muddy sand. The thick silt layer leads to a wide range of soft foundation treatment and great difficulty, making it difficult to control the overall investment. Therefore, in order to reduce the post-construction settlement and ensure the stability of the building, sintered permeable piles can be used to treat the marine soft soil foundation.

[0042] The sintered permeable piles are arranged with pipe piles, each section is 1-3m, connected by taper threads, the compressive strength of the piles is not less than 15MPa, and the permeability coefficient is not less than 0.01mm / s. Press the pi...

Embodiment 2

[0045] For a 10,000-ton wharf project, the foundation is composed of a 6.0m-thick loose layer of silt-containing medium-sand and gravel-containing silt, and an upper part of 9.0m-thick blown sand and gravel fill (reclaimed from the sea half a year ago). It is a typical weak foundation, which has the characteristics of high water content, high pore water, high compressibility, high sensitivity, high creep, low strength, low water permeability and inhomogeneity, so sintered permeable piles can be used to The foundation is treated.

[0046] The sintered permeable piles are arranged with pipe piles, each section is 1-3m, connected by taper threads, the compressive strength of the piles is not less than 15MPa, and the permeability coefficient is not less than 0.01mm / s. Press the pile body into the foundation with a pile driver, cover the pile cap, lay a gravel cushion on the surface of the foundation, with a thickness of 30-50cm, and then use geogrid and specific graded aggregates ...

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Abstract

The invention discloses a method for treating a foundation through a sintered water-permeable pile. The method comprises the following steps: (1) sintering water-permeable piles; (2) firing each sintered water-permeable pile into multiple sections which are connected, arranging a water-permeable pile cap at the top of each pile, and inserting a drainage pipe into the hollow position of each pile and leading the drainage pipe to the outside of a construction region; (3) setting the pile distance between pile bodies arranged in the sintered water-permeable pile composite foundation as 3 to 5 times of that of the pile diameter; (4) arranging the pile bodies of the sintered water-permeable pile composite foundation in a square or triangular manner; (5) pressing each pile body into the foundation through a pile inserting machine and placing the pile caps, laying a gravel pad layer on the surface of the foundation, laying medium-coarse sand, a double-way geogrid, medium-coarse sand and gravel on the surface of the gravel pad layer sequentially from the bottom to top, and tamping; (6) externally connecting the drainage pipes in all the pile bodies to a water pump. In the construction period of the structure, pore water passes through the pile walls under the action of additional stress and enters the pile bodies, and water stagnated in the pile bodies is discharged through the water pump.

Description

[0001] technical field [0002] The invention provides a method for treating foundations with permeable sintered piles, which belongs to the field of civil engineering. Background technique [0003] In recent years, there have been a large number of land reclamation projects in the country. The plastic drainage board-surcharge preloading method is generally used for foundation treatment, that is, the drainage board is inserted first and then the surcharge preloading is carried out. The high cost of transporting stockpiled materials and the long project period; in addition, composite foundation technology is often used to deal with them. The vertical reinforcement in the composite foundation can generally be used for bulk material piles (such as sand piles, gravel piles), semi-rigid piles (such as cement-soil mixing piles) and rigid piles (such as plain concrete piles, CFG piles), and recently some scholars Study of permeable concrete piles. However, bulk piles have strong ...

Claims

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Application Information

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IPC IPC(8): E02D27/16E02D5/24E02D3/10C04B38/06
Inventor 崔新壮李术才王飞王海华李凯汤潍泽
Owner SHANDONG UNIV
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