Anti-liquefaction three-dimensional drainage rigid pile and construction method thereof

A rigid pile, anti-liquefaction technology, applied in sheet pile wall, foundation structure engineering, construction, etc., can solve the problems of house damage, unusable foundation, rigid pile foundation damage, etc., to increase construction cost, technical operation convenience, use simple effect

Inactive Publication Date: 2015-08-05
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Before the present invention, gravel piles were used as vertical drainage channels in general engineering sites to resist foundation liquefaction, but the bearing capacity of gravel piles was relatively low, and the ability to control settlement was weak, so they could not be used for the foundation of construction projects such as houses
At present, rigid piles are generally used to increase the bearing capacity of foundations in buildings and other buildings in engineering. However, since rigid piles cannot drain water, they cannot reduce the possibility of liquefaction. Therefore, the damage of rigid pile foundations may be caused by foundation liquefaction in earthquakes, which in turn leads to the failure of houses. Disaster instances of destruction are recorded in every major earthquake

Method used

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  • Anti-liquefaction three-dimensional drainage rigid pile and construction method thereof
  • Anti-liquefaction three-dimensional drainage rigid pile and construction method thereof
  • Anti-liquefaction three-dimensional drainage rigid pile and construction method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] see figure 2 , the rigid pile 1 is a reinforced concrete prefabricated pile. During prefabrication, a vertical drainage groove 2 and a horizontal drainage groove 3 are arranged on its side. figure 2 The reinforced concrete prefabricated pile is a cylinder, and several (three) horizontal drainage grooves 3 surround the side walls of the reinforced concrete prefabricated pile. These horizontal drainage grooves 3 are respectively on a plane parallel to the bottom surface of the cylinder. Such as image 3 , a number of (six) vertical drainage grooves 2 are evenly distributed on the side wall of the cylinder, these vertical drainage grooves 2 are all parallel to the axial direction of the cylinder, and their upper ends are at the top and lower end of the cylinder and each horizontal row The sinks 3 are connected.

[0027] Vertical drainage body 4 and horizontal drainage body 5 are respectively placed in vertical drainage groove 2 and horizontal drainage groove 3, and the...

Embodiment 2

[0030] Present embodiment is a construction process of the pile body of embodiment 1:

[0031] During construction, the engineering geological survey of the construction site shall be carried out first to determine the distribution position and depth of the liquefiable soil layer.

[0032] In the next step, the rigid pile 1 as in embodiment 1 is prefabricated in a factory. During prefabrication, the positions of the vertical drainage groove 2 and the horizontal drainage groove 3 are reserved first, and corresponding grooves are formed after the concrete is poured and formed. see figure 1 , the position of the groove is determined according to the geological survey report in the previous step, so that the bottom of the vertical drainage channel 2 reaches the bottom of the liquefiable soil layer 6, and the horizontal drainage channel 3 is located in the liquefiable soil layer 6, while the non-liquefiable soil layer 7 is not set Horizontal gutter 3.

[0033] In the next step, ...

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Abstract

The invention discloses an anti-liquefaction three-dimensional drainage rigid pile and a construction method thereof. Multiple grooves are vertically formed in the side surface of the rigid pile; vertical drainage bodies are arranged in the grooves; multiple grooves are transversely formed in the side surface of the rigid pile; transverse drainage bodies are arranged in the grooves; the depths of the vertical grooves and the vertical drainage bodies can reach the bottom of a liquefied soil layer; and the transverse grooves and the transverse drainage bodies are arranged on a pile body in a range of the liquefied soil layer. The vertical drainage bodies and the transverse drainage bodies are fixed in the grooves; and layers of steel wire meshes cover the surfaces of the drainage bodies.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering anti-seismic technology, in particular to a liquefaction-resistant three-dimensional drainage rigid pile and a construction method thereof. Background technique [0002] Pile foundation is an ancient form of foundation. Thousands of years ago, people knew how to use wooden piles, bamboo piles, etc. as the foundation of buildings. Pile foundation is currently the most widely used foundation reinforcement treatment technology, and is widely used in civil and water conservancy projects such as roads, bridges, tunnels, high-rise buildings, and dams. There are various types of pile foundations, including bored piles, prestressed high-strength concrete pipe piles, gravel piles, sand piles, etc. Pile foundations can be divided into flexible piles and rigid piles according to the material strength of the pile body. Flexible piles generally refer to crushed stone piles, mixing piles, etc., and rigi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/30E02D3/10
Inventor 刘汉龙陈育民丁选明杨贵
Owner CHONGQING UNIV
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