Tubular pile with unfolding blades and construction method of tubular pile

Abstract

The invention discloses a tubular pile with unfolding blades. The tubular pile comprises a prefabricated tubular pile, wherein the prefabricated tubular pile is pressed into a soil layer through hammering or static pressure and comprises a mother pile and a pile tip; a cavity extending from the pile tail to the pile tip is formed in the pile body of the mother pile; a layer or a plurality of layers of blade jacking holes communicated with the cavity are formed in the pile wall of the mother pile in the length direction of the pile body; blades which can rotate around rotating devices and rotate towards the direction far away from the cavity are arranged at the upper edge far away from the cavity of each blade jacking hole; and a force applying part used for jacking the blades out of the blade jacking holes is arranged in the cavity. The construction method of the prefabricated tubular pile can be referred in an instruction book; and compared with a conventional prefabricated pile, the pile body is provided with unfoldable blades, so that the end-bearing effect of the pile is greatly improved, the bearing capacity of the pile is increased by multiple times or even tens of times, the number of used piles and the pile length can be greatly reduced, and the comprehensive benefits are extremely remarkable.

Description

technical field [0001] The invention relates to the fields of industrial and civil buildings, in particular to a pipe pile with expanded blades and a construction method thereof. Background technique [0002] For traditional precast concrete square piles and tubular piles, the bearing capacity of the pile usually depends on the friction force of the side wall of the pile and the end bearing force at the pile tip. Due to the limitation of the bearing capacity of the pile body and the soil layer, especially when the soil structure of the soil layer is poor, the bearing capacity of the pile itself is not large. In order to meet the bearing capacity requirements, it is usually economically unreasonable to increase the number of piles or increase the length of the pile itself. In addition, due to the excessive length of the pile during the pile sinking process, it is easy to cause the pile body to break, the pile body is inclined, and the pile sinking cannot meet the design requ...

AI Technical Summary

Problems solved by technology

In order to meet the bearing capacity requirements, it is usually economically unreasonable to increase the number of piles or increase the length of the pile itself.

In addition, due to the excessive length of the pile during the pile sinking process, it is easy to cause the pile body to break, the pile body is inclined, and the pile sinking cannot meet the design requirements; moreover, due to the limitation of transportation, the long piles are usually segmented during prefabrication. Prefabricated, after being transported to the site in sections, the pile body needs to be lengthened during the pile sinking process, resulting in a lot of manpower and material costs; moreover, the pile body is lengthened on site, and the quality is affected by site conditions, weather and human factors. , There are often loose and cracked piles; traditional extensive construction methods have seriously hindered the construction of a low-carbon and harmonious society

Images