An Optimal Design Method for Rigid Foundation of Tower

Abstract

The invention discloses a pole and tower rigid foundation optimum design method. According to the method, based on the mechanical property of mineral admixture concrete with a new formula, stress distribution of a pole and tower foundation and a surrounding soil body is calculated by means of the existing finite element method, shear capacity checking calculation of the soil body and shear capacity checking calculation of the foundation are conducted under the action of upward-pulling force by means of the mechanical parameters of the mineral admixture concrete and the electric transmission line pole and tower foundation optimum design method, tension capacity checking calculation of the bottom surface of the foundation and shear capacity checking calculation of the foundation are conducted under downward-pressing force, and the optimum load distribution angle is determined under the condition that the use amount of the foundation concrete is smallest. According to the simple and practical pole and tower rigid foundation optimum design method, the safety of the foundation under multiple working conditions is considered comprehensively, and the use amount the pole and tower foundation concrete is reduced by optimizing the load distribution angle.

Description

technical field [0001] The invention belongs to the technical field of electric power engineering construction, and in particular relates to an optimal design method for the rigid foundation of a tower. Background technique [0002] The tower foundation of the transmission line (English name foundation) refers to a structure buried underground, connected to the bottom of the tower, and stably bearing the applied load. [0003] Compared with general buildings, bridges and other structures, the tower foundation of transmission line has its own characteristics in the design and construction process. As far as the design process is concerned, the uplift load is often the controlling condition for the foundation design of various transmission line towers, but for buildings and bridges, the uplift force is a relatively secondary factor; in the construction process, due to the It is possible to use many basically identical towers, but their foundations are different due to differe...

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Problems solved by technology

[0009] However, the design and construction methods of tower foundations for reinforced concrete materials are only mentioned in passing in general foundation engineering textbooks, and cannot meet the needs of actual engineering

The results calculated by the empirical formula for bearing capacity calculation given in the foundation design code are not accurate enough and are too conservative. Although safety is guaranteed in most projects, it causes a waste of resources

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