High-bearing-capacity micro-settlement shearing resistant prestressed pipe pile and design and construction methods thereof

A prestressed pipe pile and bearing capacity technology, applied in sheet pile wall, foundation structure engineering, construction, etc., can solve the problems of mud pollution, long construction period and high construction cost, and achieve the effect of clean site, reduced construction period and reduced construction cost.

Inactive Publication Date: 2013-10-30
邹宗煊
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the current building foundation design code, the perforated cast-in-situ piles with high cost, long construction period and mud pollution are used.

Method used

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  • High-bearing-capacity micro-settlement shearing resistant prestressed pipe pile and design and construction methods thereof

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Effect test

Embodiment Construction

[0022] A typical embodiment of the present invention is as follows figure 1 , a construction method of micro-settlement shearing prestressed pipe pile with high bearing capacity is:

[0023] ①. A steel casing with a diameter slightly larger than the diameter of the pipe pile is buried on the ground pile position to avoid the collapse of the surface miscellaneous fill;

[0024] ②. Use a long auger drill or a simple drill to guide the hole: dig out the silt and gravel from the casing until the interlayer of gravel or gravel is dug through or close to it;

[0025] 3. Use a long auger to lead the hole, when digging through or close to digging through the pebble and gravel interlayer, inject mud from the center of the auger pipe to mix it or transport it out of the bored pile construction site to fill the hollowed out part of the pebble and gravel layer with thick mud to avoid The pebble and gravel layer collapses; when a simple drilling rig is used to guide the hole, when the peb...

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Abstract

A high-bearing-capacity micro-settlement shearing resistant prestressed pipe pile is provided with a cylindrical prestressed reinforced concrete pile body and is characterized in that a grouting pipe is arranged in a pipe cavity or the pipe wall of the prestressed pipe pile, a pile large end formed by cement slurry poured in after pile forming is arranged at the end of the pipe pile, and a reinforcement cage is placed into the pipe cavity and concrete is poured when the material strength of the pile body is smaller than the sum of side resistance and end bearing capacity of the soil layer to form a reinforced concrete pile core. Compared with the originally designed punched and drilled pile, the engineering pile production price can be reduced by 50-70%, the construction period is shortened by 60-70%, mud pollution is avoided, the field is clean and civilized, and the post-construction settlement amount is small. Compared with the existing prestressed pipe pile, the single pile bearing capacity of the prestressed pipe pile is greatly improved, the number of the piles used in projects is reduced, production cost is reduced and the construction period is shortened.

Description

[0001] Technology [0002] The invention relates to the field of construction, in particular to a high bearing capacity micro-settlement shear-resistant prestressed pipe pile and a design and construction method thereof. Background technique [0003] At present, the well-known prestressed pipe piles in construction foundation engineering are factory-produced, with reliable pile quality, fast construction speed, clean and civilized site, and low cost, and are widely used in foundation engineering. my country's coastal soft soil area is complex in geology and the lateral resistance of soft soil is small. Therefore, the bearing capacity of a single pile of prestressed pipe piles in soft soil foundations is not high, which results in waste of material strength of prestressed pipe piles. It has high compressive strength, but has the disadvantage of poor shear resistance. [0004] In the area near the hills, there is often a pebble gravel layer with a small thickness in the silt lay...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/58E02D5/50E02D5/44
Inventor 邹宗煊
Owner 邹宗煊
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