Prefabricated rotary drilling compound pile and construction method thereof

Abstract

The invention relates to a prefabricated rotary drilling compound pile and a construction method thereof and belongs to the technical field of a construction foundation component. The prefabricated rotary drilling compound pile comprises a pile body and a pile tip, wherein the pile tip is taper-shaped; a blade, which forms an acute angle together with a horizontal cross section of the pile body, is arranged on the outer surface of the pile body; the number of the blade is at least one; the blade is spiral, fan-blade-shaped or coulter-shaped; the blade is continuously or discontinuously distributed on the outer surface of the pile body along the axial direction of the pile body; spiral plates are arranged on the outer surface of the pile body at intervals; and the spiral plates are continuously or discontinuously arranged in a 360-degree range on the outer surface of the pile body. The spiral plates are arranged on the outer surface of the pile body, outer packing slurry is poured outside the pile body and inner core slurry is poured in the pile body, thereby forming the expanded head type prefabricated compound pile, further greatly increasing bearing capacity of a pile and expanding the application range of the prefabricated pile. The prefabricated rotary drilling compound pile has the advantages of strong applicability, high construction efficiency, environmental protection,and the like, and can be applied to foundations of engineering fields, such as industrial and civil architectures, municipal architectures, bridges and roads, railways, water conservancy projects, mines, ports, and the like.

Description

technical field [0001] The invention relates to a prefabricated pile and a construction method thereof, in particular to a rotary drilling prefabricated pile and a construction method thereof. Background technique [0002] In order to ensure the safety and normal use of buildings (structures), the structural design must consider the bearing capacity of the foundation soil and its deformation characteristics. If the bearing capacity or settlement deformation of the foundation does not meet the design requirements, artificial reinforcement of the foundation is required. As one of the methods of artificial reinforcement, pile foundation is widely used. Especially in design requirements (such as large single pile bearing capacity, easy control of construction quality, horizontal piles or inclined piles, and foundation piles subject to vertical pressure, vertical uplift force and horizontal load, etc.), construction conditions are increasingly demanding (such as When the constr...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a rotary drilling prefabricated composite pile, to solve the technical problems of the existing prefabricated piles such as small bearing capacity, slow construction progress, inflexible construction, limited pile angle, and unenvironmental construction

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