Anti-slip and uplift pile in mountainous area and its design method

Abstract

The invention provides a mountainous area slide-preventing and pulling-resistant pile and a design method thereof. A pile body of the mountainous area slide-preventing and pulling-resistant pile is a filling pile of a cylinder structure, the expanded bore pile end is a filling pile of a circular truncated cone structure, the expanded bore pile end and an upper structure are fixedly connected through internal reinforcing steel bars, all sections of the pile body are coaxially arranged, and a steel reinforcement cage is arranged in the pile body; and the lower portion of the expanded bore pile body, the lower section pile body and the expanded bore pile end are arranged inside a stabilization body. The design method includes the steps of calculating the landslide thrust; determining the pile position and scope; protocoling the pile length, the anchoring depth, the sectional dimension and the pile interval; determining the calculation width and the ground coefficient of the pile; judging either the pile is designed according to an elastic pile or a rigid pile; calculating the deflection, the internal force and the lateral pressure of all cross sections of the pile body; conducting checking computations on the single pile pulling-resistant bearing force and the slide-preventing stability; checking the ground strength; designing the pile body structure; and analyzing the slope stability. According to the mountainous area slide-preventing and pulling-resistant pile and the design method, a pile foundation provides slide-preventing force while providing pulling-resistant force, and safety and normal use of a high voltage electric power pylon and a signal transmission tower on a slope are guaranteed; and the structure is simple, and construction is convenient.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and relates to a mountainous area anti-lift pile with anti-slip function and a design method thereof, which is suitable for the foundation of high-voltage transmission line towers and signal transmission towers built on potentially unstable slopes in mountainous areas. Background technique [0002] When constructing power and communication facilities in the mountainous areas of southwest my country, it is inevitable to build high-voltage transmission line towers and signal transmission tower foundations on potentially unstable slopes. Generally speaking, the high-voltage transmission line tower mainly bears the wind load, and the pile foundation under it plays the function of anti-lifting, so as to prevent the tower from overturning; but when building high-voltage transmission line towers and signal transmission towers on mountain slopes, the situation is even more serious. The pile fou...

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