Building construction method of earth-covered oil tank, hoisting device and using method of hoisting device

Abstract

The invention provides a building construction method of an earth-covered oil tank, a hoisting device and a using method of the hoisting device. The construction method comprises the steps: a, a deeppit is dug in the ground of a proposed area, and a concrete platform is poured at the bottom of the deep pit; b, spliced and welded pieces of a steel storage tank are hoisted to the concrete platform,and a pouring formwork is set up; c, concrete is poured on the pouring formwork; d, the pouring formwork in the earth-covered oil tank is dismantled; e, a tank bottom of the steel storage tank and aside wall of the uppermost circle of the steel storage tank are spliced and welded on the concrete platform, and a tank top of the steel storage tank is spliced and welded on the side wall of the uppermost circle of the spliced and welded steel storage tank; f, the hoisting device is mounted at the tank top; g, the side wall of the uppermost circle of the steel storage tank provided with the tanktop is overall lifted, the other spliced and welded parts of the steel storage tank are hoisted to the corresponding position of the steel storage tank through the hoisting device to be spliced and welded; h, the step g is repeated till the side wall of the steel storage tank is spliced and welded; and i, finally a temporary entrance-exit is blocked by concrete.

Description

technical field [0001] The invention relates to the construction field of an oil storage depot, in particular to a construction method, a hoisting device and a use method of a soil-covered oil tank. Background technique [0002] In recent years, with the continuous deepening of my country's industrialization and the continuous improvement of the industrial level, large storage tanks have been used in various industries due to their low cost and large capacity. Among them, soil-covered steel storage tanks are the most common type of large storage tanks. Because of their high concealment, safety, and long service life, they are mainly used in the storage of crude oil and refined oil. The soil-covered steel storage tank consists of two parts, the exterior is a concrete tank, and the interior is a steel vault tank. The horizontal elevation of the foundation of the soil-covered steel storage tank is generally 3-4m lower than the normal ground. The construction is difficult and th...

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Problems solved by technology

[0003] One of the purposes of the present invention is to provide a construction method for soil-covered oil tanks to solve the problem that the pouring formwork for concrete tanks is not easy to build and the volume of steel storage tanks is too large to facilitate hoisting when using the existing methods for construction of soil-covered steel storage tanks The problem

[0004] The second object of the present invention is to provide a hoisting device for the construction of soil-covered oil tanks, so that when the concrete tank is poured first and then the steel storage tank is hoisted, the existing equipment cannot enter, which leads to difficulties in tailoring and welding of the steel storage tank question

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