A kind of uplifting structure and construction method of cement poles for anti-sand soil backfill treatment

Abstract

The invention discloses a structure for preventing sand backfill and treating concrete pole up-pulling and a construction method thereof. The structure comprises a concrete pole, a fixing ring, a fixing pull line, a fixing base plate and an annular fixing piece. The construction method of the structure comprises the steps that 1, a concrete pole pit is excavated; 2, the upper edge of the annular fixing piece is fixedly connected with the bottom face of the fixing base plate; 3, the annular fixing piece and the fixing base plate are integrally placed into the bottom of the concrete pole pit; 4, the concrete pole is sleeved with the fixing ring; 5, the concrete pole is vertically placed in the concrete pole pit; 6, the fixing pull line is installed; 7, the concrete pole pit is filled with backfill soil and compacted, and therefore construction is finished. According to the structure and the construction method thereof, the concrete pole up-pulling problem caused by soil freezing in winter and melting in summer in the north area of China is fundamentally solved, the structure is simple, construction is convenient, the adopted materials are low in cost, the construction period is short, and the maintenance cost needed for solving the concrete pole up-pulling problem every year is reduced.

Description

[0001] Technical field: [0002] The invention relates to a structure for preventing cement rods from pulling up and a construction method thereof, in particular to a structure for preventing sand backfilling and controlling cement rods from pulling up and a construction method thereof. [0003] Background technique: [0004] In most areas of northern my country, the soil freezes in winter and thaws in summer, which leads to periodic uplifts of some cement poles on transmission lines, with an average maximum uplift of 16cm per year, and tilting and downturning of cement poles in some areas , which seriously threatens the safe operation of the line. Frost heaving of the soil is the prerequisite for the uplift of the cement pole. After the uplift occurs, the unfrozen mud, water and sand around the cement pole root will fall into the cavity to fill the cavity, so that the pole root cannot fall back to the original place after the second year of thawing. It is the root cause of the...

AI Technical Summary

Problems solved by technology

[0007] It is an urgent requirement to solve the problem of pulling up cement poles in power transmission lines in frost heaving areas by proposing a method for controlling the pulling out of cement poles that is convenient for construction, saves overall costs, increases the resistance to pulling out of shafts, and prevents backfilling of sand.

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