Method for construction of pipe sinking cast-in-place pile in pebble bed, gravel layer and sand layer

Abstract

A method for the construction of a pipe sinking cast-in-place pile in a pebble bed, a gravel layer and a sand layer, wherein firstly, a hole is drilled in a pile position and mud or coal ash slurry is simultaneously injected into the hole; and then the construction of the pipe sinking cast-in-place pile is performed through a process of hammering double sleeves; therefore, the purposes of no sediment at the bottom end of the pile and high bearing capacity of single pile are achieved. The method has the characteristics of high construction speed, no pollution on the spot, ensured quality, low construction cost, and ensured designed pile diameter and pile length.

Description

technical field [0001] The invention relates to a construction method of an immersed tube grouting pile, in particular to a method for constructing an immersed tube grouting pile in a relatively dense pebble layer, a gravel layer and a sand layer. Background technique [0002] With the continuous development of industrial and civil construction, different types of stratum soils are often encountered during construction, such as garden gravel layers, sand layers or cohesive soils with a standard penetration number of N63. The pebble layer, gravel layer, and sand layer of a certain thickness, in such soil layers, the bored pile technology is usually used, and the bored pile is prone to hole collapse, resulting in large sediment, low single pile bearing capacity, and cycle time. Long, high engineering costs. In order to solve the above-mentioned problems, the applicant Liu Qingjie filed an application for an invention patent titled "Construction Method of Immersed Pipe Cast-in...

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of industrial and civil construction, different types of stratum soils are often encountered during construction, such as garden gravel layers, sand layers or cohesive soils with a standard penetration number of N63. The pebble layer, gravel layer, and sand layer of a certain thickness, in such soil layers, the bored pile technology is usually used, and the bored pile is prone to hole collapse, resulting in large sediment, low single pile bearing capacity, and cycle time. Long, high engineering cost

In order to solve the above-mentioned problems, the applicant Liu Qingjie filed an application for an invention patent titled "Construction Method of Immersed Pipe Cast-in-situ Pile Construction in Pebble Layer and Sand Layer" to the State Intellectual Property Office on December 12, 2007. On August 26, 2009, the invention patent granted by the State Intellectual Property Office was obtained. The patent number is: ZL200710188594.3; When the pile diameter and pile length are relatively large, it is difficult to sink the pipe and the construction speed is slow.