Construction method of steel reinforced concrete chimney

Abstract

The invention discloses a construction method for reinforced concrete chimney, which comprises a foundation construction and a chimney cylinder construction; wherein the chimney cylinder construction comprises the steps: the steel bars are arranged on the cylinder wall along the direction of the chimney cylinder body; the firebrick lining is built along the inner circumference of the chimney; a displacement formwork is arranged at the outer circumference of the chimney cylinder body; the concrete is poured between the firebrick lining and the displacement formwork; when the intensity of the concrete is over 1.2N / mm<2>, the displacement formwork can be removed; the removable displacement formwork is displaced upwards; the steps are repeated until the chimney reaches the design height; the construction method for reinforced concrete chimney has the advantages that: the construction cost is low; the construction measure cost can be reduced greatly; an installation and removal procedure of the inner chimney formwork is reduced; the construction difficulty is reduced; the construction speed is improved and the construction cost is lowered; the construction period for displacement formwork construction is shortened by 30 percent than that of the slip-form construction in the same project, and the construction cost is reduced by 60 percent; thereby the construction method for reinforced concrete chimney has significant integrated technical economic and social benefits.

Description

technical field [0001] The invention belongs to the field of building structure engineering, in particular to a construction method of a reinforced concrete chimney. Background technique [0002] A chimney is an exhaust tool used to remove gas or smoke caused by a fire. It is a towering structure that discharges smoke into the sky. It can improve the combustion conditions and reduce the pollution of flue gas to the environment. Therefore, chimneys are indispensable equipment for boilers, thermal power generation and other combustion furnaces. [0003] In the prior art, chimneys are mainly divided into two types: brick chimneys and reinforced concrete chimneys. Reinforced concrete chimneys are suitable for use in high temperature environments, and the project cost is relatively high. Slipform construction is adopted, and the construction period is long. The cost of general reinforced concrete chimney construction measures is more than 2 / 5 of the total cost, especially in t...

AI Technical Summary

Problems solved by technology

Although the cost of brick chimney is low, the construction work is heavy and the construction speed is slow. Due to the large load of brick masonry, the amount of foundation work is greatly increased, and the service life of the chimney is relatively short.

Need to shut down for maintenance, reducing production efficiency and wasting maintenance costs

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