Assembly-type cone-column-plate-column-combined foundation for electric transmission line and construction method thereof

Abstract

The invention discloses an assembly-type cone-column-plate-column-combined foundation for an electric transmission line and a construction method thereof. The assembly-type cone-column-plate-column-combined foundation comprises a base and a supporting section connected onto the base. The supporting section comprises a cone column section and a hollow section which are sequentially arranged from top to bottom, and an embedded part is connected to the top end of the cone column section. The base comprises a middle concrete crossbeam connected with the supporting section through a flange, external concrete crossbeams are arranged on the two sides of the long edge of the middle concrete crossbeam in parallel, and the middle concrete crossbeam and the external concrete crossbeams are fixed together through a plurality of concrete battens arranged in parallel. A steel reinforcement cage is poured with concrete in the cone column section, and the steel reinforcement cage and the flange are welded or mechanically connected together. By means of the foundation, frozen-earth and frost-heaving damage can be avoided, self-weight is small, the size of jointed components is small, the transportation cost is saved, lifting difficulty is lowered, the quantity of concrete materials and the structural self-weight are reduced, and structural design is more economical; due to prefabricated concrete components, the construction period is shortened, and concrete quality is guaranteed.

Description

technical field [0001] The invention relates to the field of power transmission line engineering, in particular to an assembled cone-column-slab-column composite foundation for power transmission lines and a construction method thereof. Background technique [0002] Qinghai-Tibet, Northeast, and Xinjiang regions are distributed with perennial or seasonal permafrost, with significant frost heave effects, severe cold in winter, and difficulties in concrete pouring and maintenance. The transformation of the method requires that more and more prefabricated foundations are used in engineering construction, which can overcome the difficulty of forming or maintaining foundation pits in these special areas by quickly excavating and backfilling foundation pits, while ensuring the quality of concrete and shortening the construction period. [0003] The cone-column foundation can completely or partially eliminate the tangential frost heaving force depending on its own section type. It...

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Problems solved by technology

[0006] The object of the present invention is to provide an assembled cone-column-slab-column composite foundation for power transmission lines and its construction method for the problems of large solid concrete main columns and difficult transportation in perennial or seasonal frozen soil areas. The form of the main column is reasonable, and the tangential frost heaving force can be completely or partially eliminated by its own section type; in addition, it has the characteristics of light weight of the overall structure and miniaturization of assembled components, and the amount of concrete used in the process of use is small, which can effectively save materials and Comprehensive project cost, low transportation cost, and convenient construction

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