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Full casing pipe soil taking vibration construction method for squeezed and expanded cast-in-place pile
A full casing pipe soil taking vibration construction method for a squeezed and expanded cast-in-place pile includes the steps that a steel casing pipe is sunk to the design elevation by a high-frequency vibration hammer through a clamper; soil is taken mechanically or manually; a special hole expander is put in the pipe for vibration hole expansion; concrete is poured into the special hole expander, and vibration hole expansion and concrete pouring are repeatedly performed; a steel reinforcement cage is lifted and put, and concrete is poured into the steel reinforcement cage; the steel casing pipe is pulled out in a vibrating mode to form the squeezed and expanded cast-in-place pile. As the fill concrete is poured while the special hole expander is used for vibration squeezing and expanding, foundation soil of the bottom expanding part can be more compact, a formed expanding head can substantially increase the end resistance of the pile, and the vertical bearing capacity of the pile is improved substantially; when the same vertical load is borne by a single pile, the needed pile length is small, the usage amount of the concrete is small, and the foundation project cost can be substantially reduced.
Full casing pipe soil taking vibration construction method for squeezed and expanded cast-in-place pile
A full casing pipe soil taking vibration construction method for a squeezed and expanded cast-in-place pile includes the steps that a steel casing pipe is sunk to the design elevation by a high-frequency vibration hammer through a clamper; soil is taken mechanically or manually; a special hole expander is put in the pipe for vibration hole expansion; concrete is poured into the special hole expander, and vibration hole expansion and concrete pouring are repeatedly performed; a steel reinforcement cage is lifted and put, and concrete is poured into the steel reinforcement cage; the steel casing pipe is pulled out in a vibrating mode to form the squeezed and expanded cast-in-place pile. As the fill concrete is poured while the special hole expander is used for vibration squeezing and expanding, foundation soil of the bottom expanding part can be more compact, a formed expanding head can substantially increase the end resistance of the pile, and the vertical bearing capacity of the pile is improved substantially; when the same vertical load is borne by a single pile, the needed pile length is small, the usage amount of the concrete is small, and the foundation project cost can be substantially reduced.
Full casing pipe soil taking vibration construction method for squeezed and expanded cast-in-place pile
JIAN HONGYU (author) / LIN HAI (author)
2015-05-20
Patent
Electronic Resource
English
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