Cast-in-place pile end slurry supplying and grouting device and method

A technology of cast-in-place piles and supplementary grouting, which is applied in construction, foundation structure tests, foundation structure engineering, etc., can solve problems affecting the construction period, failure to achieve expected results, structural damage, etc., and achieve low project cost and small construction site , design reasonable effect

Inactive Publication Date: 2017-05-24
SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

This invention can achieve smooth grouting, ensure the quality and success rate of grouting, but this method needs to drill holes on the side wall of the cast-in-situ pile, which will cause damage to the structure and affect

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  • Cast-in-place pile end slurry supplying and grouting device and method
  • Cast-in-place pile end slurry supplying and grouting device and method

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[0028] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention will be further explained below in conjunction with specific embodiments.

[0029] See figure 1 with figure 2 , The device for supplementary grouting at the end of a cast-in-place pile according to the present invention includes

[0030] At least one acoustic measuring tube or steel pipe pre-buried in the bored pile that needs to be grouted, the top end of the acoustic measuring tube or steel pipe is connected to the ground, and the bottom end of the acoustic measuring tube or steel pipe is located at the pile end of the bored pile;

[0031] 1. A probe used to pierce the bottom of the acoustic tube or steel pipe;

[0032] A probe rod used to transmit the probe to the pile end of the cast-in-place pile;

[0033] And a reaction force device for driving the probe.

[0034] It should be pointed out that the probe rod adopts a multi-sectio...

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Abstract

The invention discloses a cast-in-place pile end slurry supplying and grouting device and method. The device comprises a sounding pipe or steel pipe used for a slurry supplying and grouting channel, a probe used for breaking through the bottom of the sounding pipe or steel pipe, a probing rod used for conveying the probe to the pile end of the cast-in-place pile end and a counterforce device used for driving a static penetrometer of the probe; the sounding pipe or steel pipe embedded in the cast-in-place pile required to be subject to slurry supplying and grouting is selected to serve as the slurry supplying and grouting channel, the probe is mounted at one end of the probing rod, the other end of the probing rod is connected with the static penetrometer, the probe is conveyed to the bottom of the sounding pipe or steel pipe through the probing rod, the counterforce device of the static penetrometer is started, pressure is applied to the probe, the bottom of the sounding pipe or steel pipe is broken through, and finally a grouting pipeline system is put into the bottom of the slurry supplying and grouting channel to be subject to pile end slurry supplying and grouting construction of the cast-in-place pile.

Description

technical field [0001] The invention relates to the field of positioning construction engineering, in particular to a device and method for supplementary grouting at pile ends of cast-in-place piles. Background technique [0002] In order to eliminate the influence of pile tip sediment and pile side mud skin on pile foundation bearing capacity and pile quality, post-grouting technology of cast-in-situ pile pile tip has been gradually adopted by engineering circles. In recent years, this technology has been widely used in my country. Application and development, but some problems are often encountered in the grouting process after the actual project. The difficulty of post-grouting at the pile end lies in the manufacture of the grouting device and the embedding of the grouting pipe. The shallow part of the grouting pipe in the engineering pile is not wrapped with concrete, and the movement of the pile machine and the construction of the excavator during the construction proce...

Claims

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Application Information

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IPC IPC(8): E02D33/00E02D15/04
CPCE02D33/00E02D15/04
Inventor 顾国荣魏建华徐枫游波张开普
Owner SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST
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