Fabricated concrete structure joint connection prefabricated part and connection mode thereof

Abstract

The invention provides a fabricated concrete structure joint connection prefabricated part, which includes a prefabricated upper truncated column and a prefabricated lower truncated column. The prefabricated upper truncated column is provided with a plurality of upper reserved longitudinal bars penetrating through the length direction of the prefabricated upper truncated column and extending out of the lower end face of the prefabricated upper truncated column, and the prefabricated lower truncated column is provided with a plurality of lower reserved longitudinal bars penetrating through thelength direction of the prefabricated lower truncated column and extending out of the upper end face of the prefabricated lower truncated column. The fabricated concrete structure joint connection prefabricated part is characterized in that the ends of the lower reserved longitudinal bars are provided with external threads, the upper reserved longitudinal bars are connected with the lower reservedlongitudinal bars through semi-grouted steel bar joints for vertical steel bar connection, and the semi-grouted steel bar joints for vertical steel bar connection are located between the prefabricated upper truncated column and the prefabricated lower truncated column. The invention further provides a fabricated concrete structure joint connection mode. According to the fabricated concrete structure joint connection prefabricated part, the upper reserved longitudinal bars are connected with the lower reserved longitudinal bars through the semi-grouted steel bar joints for vertical steel bar connection, on the one hand, the condition that an original connecting sleeve is located at a plastic hinge position of concrete, and the rupture degree during vibration is large due to the inconsistency of the ductility is avoided, and on the other hand, slurry filling can be ensured.

Description

technical field [0001] The invention belongs to the field of construction engineering, and in particular relates to an assembled concrete structure node connection prefabricated part and a connection method thereof. Background technique [0002] At present, the joint connection types between concrete columns mainly include sleeve connection and grout-anchor connection. In the existing sleeve connection, the grouting joint of the steel sleeve needs to be provided with a grouting port and a grouting port on the side wall of the steel sleeve. However, because it is poured entirely in the concrete prefabricated part, the grouting is performed through the grouting pipe exposed outside the concrete prefabricated part. On the one hand, the sleeve is poured at the plastic hinge of the concrete column. Due to the different ductility of the sleeve and the concrete, it is easy to break during vibration. The two ends of the sleeve are damaged intensively. On the other hand, the quality ...

AI Technical Summary

Problems solved by technology

[0002] At present, the joint connection types between concrete columns mainly include sleeve connection and grout-anchor connection. In the existing sleeve connection, the grouting joint of the steel sleeve needs to be provided with a grouting port and a grouting port on the side wall of the steel sleeve. However, because it is poured entirely in the concrete prefabricated part, the grouting is performed through the grouting pipe exposed outside the concrete prefabricated part. On the one hand, the sleeve is poured at the plastic hinge of the concrete column. Due to the different ductility of the sleeve and the concrete, it is easy to break during vibration. The two ends of the sleeve are damaged intensively. On the other hand, the quality of grouting is easily affected by factors such as the on-site operating environment, resulting in a decline in grouting quality. The connection strength cannot be guaranteed and needs further improvement

The quality of slurry anchor joints mostly depends on the operation level of on-site workers, and the connection quality cannot be verified one by one

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