Assembly type prefabricated vertical member sleeve electric tracing heating system and using method thereof

Abstract

The invention discloses an assembly type prefabricated vertical member sleeve electric tracing heating system and a using method thereof. The assembly type prefabricated vertical member sleeve electric tracing heating system comprises a sleeve which is abutted to a steel bar which is arranged in an upper prefabricated member and extends outside downward and a steel bar which is arranged in a lower prefabricated member and extends outside upward; a grouting hole is formed in the lower half part of the sleeve; a slurry overflow hole is formed in the upper half part of the sleeve; the sleeve is provided with an electric tracing heating device which is composed of an electric heating element, a temperature sensor and a temperature controller which is connected with the electric heating element and the temperature sensor simultaneously; the electric heating element are wound on the outer surface of the sleeve to form a thermal resistance heat strip which is composed of two parallel metal wires, conductive plastic wrapping the two parallel metal wires and an external insulating layer wrapping the conductive plastic; and a probe of the temperature sensor measures current temperature of the sleeve or concrete in the sleeve and outputs the current temperature to the temperature controller. According to the assembly type prefabricated vertical member sleeve electric tracing heating system and the using method, the sleeve grouting technology can normally carry out construction at negative temperature, and the technical barrier that a prefabricated vertical member cannot carry out normal construction in winter is broken through.

Description

technical field [0001] The invention belongs to the field of construction engineering, and in particular relates to an assembly-type prefabricated vertical member sleeve electric heat-tracing heating system and a use method thereof. Background technique [0002] Sleeve grouting technology is the core key technology of residential industrialized prefabricated buildings, which solves the core problem of vertical structural steel bar connection, and organically integrates steel bar mechanical connection technology and special grouting materials. At present, the general connecting sleeve is made of high-quality structural steel, both ends of which are cavities (or a cavity at one end and a straight thread at one end), and are connected to the threaded steel bars by pouring special cement-based high-strength non-shrinkage grouting materials. Sleeve grouting material is a kind of dry mixture based on cement, with appropriate fine aggregate and a small amount of admixture and other...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an assembled prefabricated vertical member sleeve electric heating heating system and its use method, to solve the problem that the strength of cement-based high-strength non-shrinkage grouting materials cannot be guaranteed under negative temperature, and the sleeve grouting technology in winter cannot Construction, resulting in the failure of normal installation and construction of residential industrialized prefabricated components, and serious delays in the technical problems of the construction period

Images