Framework thin wall type concrete chimney outer wall and building method thereof

Abstract

The invention discloses a framework thin wall type concrete chimney outer wall and a building method thereof. A bottom layer of a chimney in an existing mold overturning construction technology needsto completely achieve a corresponding hardening strength, then a wall body can be upwards built, lots of manual work and time are consumed during formwork erecting, and construction site management isnot facilitated due to small formwork accumulation. The framework thin wall type concrete chimney outer wall comprises a chimney body, and the upper portion of the chimney body is connected with a top hoop; the chimney body comprises a framework structure; the framework structure comprises cast-in-place horizontal concrete beams and concrete columns on bases of the cast-in-place concrete beams; thin wall arc-shaped prefabricated plates are installed between the concrete columns; the lower ends of the thin wall arc-shaped prefabricated plates are located on the horizontal concrete beams; the horizontal direction of the thin wall arc-shaped prefabricated plates is connected with the concrete columns, or the thin wall arc-shaped prefabricated plates are horizontally connected and then are connected with the concrete columns; the upper ends of the thin wall arc-shaped prefabricated plates are used for supporting the concrete beams on the upper portions; the curved faces of the thin wall arc-shaped prefabricated plates are part of the surface of a conical body; the concrete columns and the concrete beams jointly form a concrete net in a cone frustum shape; and the concrete net where the thin wall arc-shaped prefabricated plates are embedded forms the chimney outer wall. The framework thin wall type concrete chimney outer wall is used for chimney building.

Description

Technical field: [0001] The invention relates to a reinforced concrete chimney used in industry or power generation and drying equipment, in particular to a frame thin-walled concrete chimney and a construction method thereof. Background technique: [0002] A chimney is a ventilation structure for hot flue gas or smoke from a boiler, and it is also an exhaust tool for removing gas or smoke caused by 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. Chimneys are usually vertical, or as close to vertical as possible, to ensure a smooth flow of gases, drawing air into what is known as stack combustion or the stack effect. The space inside the chimney is called the flue. [0003] The height of a chimney affects its ability to transport flue gases to the outside environment through the stack effect. In addition, the use of chimneys for the dispersion of polluta...

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Problems solved by technology

[0004] The chimney of the existing overturning construction technology needs the bottom layer to reach the corresponding hardening strength before the wall can be built upwards. It takes a lot of labor and time to set up the formwork, and the accumulation of small formwork is not easy to manage on the construction site; while the slipform construction, the outer wall of the chimney is It is conical in shape and needs to be constantly adjusted in diameter to support the conical formwork. The support and movement of the formwork will take a lot of time and labor, and the construction is extremely difficult, and the daily construction height is generally below 3 meters. If the wall does not meet the requirements, it cannot be corrected, and it is a non-removable and non-replaceable structure; the existing research on the prefabricated construction method of chimneys shows that the assembly of prefabricated panels is difficult, and the mechanical properties of some nodes of the overall building structure are not ideal

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