Method for enlarging bottom and pile making of immersed tube and prefabricated steel concrete under-reamed pile

A technology of bottom-expanding piles and sinking pipes, which is applied in sheet pile walls, buildings, and foundation structure engineering, and can solve problems such as potential safety hazards for construction personnel, discounted single pile bearing capacity, and small expansion angle of the base, and achieves a simple and advanced process method , Improve the bearing capacity of single pile and improve the effect of construction safety
CN100453742CInactive Publication Date: 2009-01-21王国奋
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
王国奋
Publication Date
2009-01-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for constructing tile foundation, especially providing a club-footed pile and a pile-forming method of sink tube preset steel concrete club-footed pile, wherein it comprises: designing the sink tube with metallic pile head to standard rigid layer; taking out metallic pile head, using club-footed device to expand the bottom; forming base chamber at the bottom, using air adsorb device to take soil; arranging radial steel bar into chamber and nailing it into rigid soil; pouring the concrete into chamber to prepare the concrete base; inserting the preformed steel concrete post and using its bottom bar to connect the poured base; drawing out sink tube to form post. The invention has standard geometrical shape, without particle soil and with high efficiency.
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Description

technical field

[0001] The invention relates to a construction pile foundation project and a construction method, in particular to a bottom expansion and pile forming method of immersed tube prefabricated steel concrete bottom expansion piles. Background technique

[0002] It is well known that the quality of building foundation works plays a vital role in the influence of building quality, so each construction unit not only pays attention to the construction quality of above-ground buildings, but also pays more attention to the quality of foundation works. And invest in scientific research to tap the potential of the pile foundation project, so that it can improve the utilization rate of material strength on the premise of ensuring the quality of the project. As can be seen from the calculation, the bearing capacity of the pile tip designed by the solid pile only uses about 20% of the strength of the pile body. For the sake of safety, all countries have stipulated a safety ...

Claims

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