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Construction for making piles and tools

A construction method and tool technology, applied in the direction of sheet pile walls, foundation structure engineering, construction, etc., can solve the problems such as the difficulty of penetrating through the middle hard interlayer, the difficulty of removing porous soil, and increasing the difficulty of construction, so as to achieve a wide range of geological conditions and convenience Effect of water supply and drainage, mitigation of earthquake liquefaction performance

Inactive Publication Date: 2003-12-24
闫瑞明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pile pressure is limited, and it is difficult to penetrate the middle hard interlayer. It should not be used or should be used with caution in the hard interlayer, in the stratum with many boulders and obstacles; hole, increasing the construction link
The tools mostly use long augers and open pipes as hole-forming tools. When encountering hard soil layers such as pebbles, ripraps, and arc stones, it is necessary to replace hole-forming tools, such as impact drills. Porous soil is not easy to get rid of, and it will squeeze the surrounding buildings and underground pipelines. It is often necessary to equip a lot of equipment for opening holes and expanding the head, which increases the difficulty of construction, the efficiency of pile formation is low, and the project cost is high.

Method used

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  • Construction for making piles and tools
  • Construction for making piles and tools
  • Construction for making piles and tools

Examples

Experimental program
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Effect test

Embodiment Construction

[0013] The working procedure of the pile is positioning of pile driver, forming hole in retaining wall, forming enlarged head, sealing hole, building pile, and pulling pipe.

[0014] If the pile length is within the pile sinking capacity of the equipment: the outer pipe will play the role of controlling the pile shape and retaining wall during the hole forming process; the inner pipe will play the role of internal ramming pipe, drill pipe, soil container and drainage pipe; The sinking pile tool composed of the pile head that controls the degree of soil extrusion and acts as a tamping hammer in the process of hole expansion performs sinking through static pressure, vibration, impact, hammering, water jetting, and rotation. If the outer tube of the pile tube is a steel pipe, the inner and outer tubes will sink to the design depth. If the outer tube of the pile tube is a prefabricated retaining wall, the outer tube will sink to a place 0.5 to 2 meters less than the design depth, g...

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Abstract

A construction method for forming pile includes locating the piling machine, perforating while protecting wall by hard pipe or sludge, forming enlarged head, enclosing hole, pouring concrete, and pulling up the pipe. Its tool kit is composed of an external pipe with water discharge opening, internal pipe playing the role of supplying or discharging water, and pile head connected with internal pipe. Its advantages are high quality of pile, and high load-bearing power.

Description

Technical field [0001] The invention relates to a construction method and tools for civil pile foundations, in particular to a construction method and tools for forming piles by using static pressure, vibration force, impact force and hammering force. Background technique [0002] At present, the construction methods of pile foundations can be divided into non-squeezed soil piles, partial soil-squeezed piles and soil-squeezed piles. Among them, non-squeezed soil piles are formed by drilling, digging, and shoveling; , punching, drilling and other methods to form holes; soil-squeezing piles are piled by static pressure, vibration, hammering and other methods. The process is limited by geological conditions. For example, dry-work hole-forming piles are only suitable for clay layers above the groundwater level, silt, filling soil, sandy soil above medium density, and weathered rock formations; , especially when constructing in sandy soil layer with confined water, water stop la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/38
Inventor 阎瑞明
Owner 闫瑞明
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