Calculation method for pre-stressed anchor cable embedded pile

Abstract

The invention provides a calculation method for a pre-stressed anchor cable embedded pile. The method comprises the steps of firstly, regarding the embedded pile and an anchor cable as a whole, then establishing a passive earth pressure fracture surface balance equation and a pile top surface balance equation according to the passive earth pressure fracture surface sliding and the pile top surfacesliding existing in a soil body behind the pile, and calculating the length of the embedded pile above a sliding surface; and finally, calculating the maximum shearing force and the maximum bending moment of the embedded pile under the action of landslide thrust. The method is based on a soil body molar coulombic failure criterion and a limit equilibrium method, reduces the calculation complexityof the pre-stressed anchor cable embedded pile, changes the pile length of a loaded section and reduces the internal force of a pile body, the pre-stressed anchor cable embedded pile can bear the larger thrust like an anchor cable common pile, but also the pile body materials can be saved, the manufacturing cost is reduced, and the reference is provided for the extra-large landslide disaster treatment in the important engineering construction in China.

Description

technical field [0001] The invention relates to the technical field of embedded piles, in particular to a calculation method for embedded piles with prestressed anchor cables. Background technique [0002] The retaining structure is an important measure often used in the prevention and control of landslides, and plays a decisive role in the safety of engineering construction. The retaining wall is the earliest retaining structure used in landslide prevention and control. The retaining wall mainly relies on its own gravity and the friction of the wall bottom to bear the thrust of the landslide, generally within 1000KN; The anchoring effect in the stable stratum is used to balance the thrust of the landslide. The greater the thrust, the larger the design of the pile section and the longer the anchorage section. The thrust of the landslide is generally within 2000KN; the prestressed anchor cable anti-slide pile was applied in the 1980s The most common form of the developed ant...

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Problems solved by technology

[0004] For the shortcomings in the above-mentioned background technology, the present invention proposes a calculation method for embedded piles with prestressed anchor cables. According to the Mohr-Coulomb failure criterion of soil and the limit equilibrium method, the calculation complexity is reduced, and the problems of buried piles in the prior art are solved. Technical Problems of the Risk of Exceeding Soil on Top of Pile Piles

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