Non-earth-borrowing composite pile and construction method thereof

Abstract

The invention discloses a non-earth-borrowing composite pile and a construction method thereof. The composite pile comprises a first pile as a peripheral pile and a core pile as a second pile. The first pile is a cemented soil pile, and the second pile is a reinforced concrete pile. The area of the first pile is S1, the whole pile length is L1, the area of the second pile is S2, and the whole pile length is L2. The central distance d between the first pile and the second pile is 0, area ratio S ratio of the second pile and the first pile is S2/S1, length ratio L ratio of the second pile and the first pile is L2/L1, wherein the S ratio ranges from 0.25 to 0.75, and the L ratio is larger than 0.5. When the L ratio is smaller than 1, the upper end and the lower end of the first pile in the range of 3 to 5 meters are repeated mixing spraying section. When the L ratio is larger than 1, the upper end of the first pile in the range of 3 to 5 meters is a repeated stirring spraying section. The non-earth-borrowing composite pile adopts non-earth-borrowing process according to the soil layer condition, gives full play to the cemented soil pile and the reinforced concrete pile, saves cost and labor, and is high in construction performance, thereby being especially suitable for high-rise buildings in hard soil areas, especially mealy sand areas.

Description

technical field [0001] The invention relates to a pile construction method. Background technique [0002] The existing construction techniques of immersed tube grouting piles, rammed piles, and prefabricated piles are generally difficult to construct and cross when encountering hard soil areas. Generally, soil borrowing holes are used, which lose part of the bearing capacity, and are often thankless; generally encounter soft soil areas. Land areas try their best to increase the lengthening piles to obtain bearing capacity, which is often costly and not thankful. Contents of the invention [0003] The object of the present invention is to provide a non-earth composite pile with good construction environmental protection, good cost performance and reliable quality and its construction method. [0004] Technical solution of the present invention is: [0005] A kind of non-soil composite pile, including the first pile as the peripheral pile and the core pile as the second pi...

AI Technical Summary

Problems solved by technology

[0002] The existing construction techniques of immersed tube grouting piles, rammed piles, and prefabricated piles are generally difficult to construct and cross when encountering hard soil areas. Generally, soil borrowing holes are used, which lose part of the bearing capacity, and are often thankless; generally encounter soft soil areas. Land areas try their best to increase the lengthened piles to obtain bearing capacity, which often costs money and is not thankful