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

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...

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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

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