Node for connecting prefabricated concrete beam with round steel tube concrete column through unbonded prestressed ribs

Abstract

The invention provides a node for connecting a prefabricated concrete beam with a round steel tube concrete column through unbonded prestressed ribs, and belongs to the technical field of building structures. The node comprises the round steel tube concrete column, the reinforced concrete beam, the unbonded prestressed ribs, an annular plate and channel steel. The round steel tube concrete column (1) and the reinforced concrete beam (2) are both prefabricated; the positions, corresponding to beam sections, of the reinforced concrete beam and of the round steel tube concrete column are provided with hole channels; metal corrugated tubes (4) are pre-buried in the hole channels; the portion, connected with the reinforced concrete beam (2), of the round steel tube concrete column (1) is provided with the annular plate in a welded mode; the channel steel (6) is welded to a round steel tube; the unbonded prestressed ribs (3) penetrate through the metal corrugated tubes (4) and are tensioned so that the beam and the column can be connected into a whole. The construction speed is high, the onsite welding process is needless, reliability of node connection can be guaranteed, good anti-seismic performance is achieved, the node connection mode can be used for a side column node in a structure and can also be used for a middle column node and application prospects are wide.

Description

technical field [0001] The invention relates to a joint of a prefabricated concrete beam circular steel tube concrete column connected by unbonded prestress, and belongs to the technical field of building structures. Background technique [0002] Concrete filled steel tubes have been used in construction projects for more than 100 years. Circular concrete filled steel tube has been valued by engineering circles because of its advantages of high bearing capacity, good plasticity and toughness, good economic effect and convenient construction. Circular concrete filled steel tubes can adapt to the needs of modern engineering structures to develop towards large spans, high towers, heavy loads and withstand harsh conditions, and meet the industrial requirements of modern construction technology, so they are being more and more widely used in single-story and multi-story industrial factory building columns , Equipment frame columns, trestle columns, piles, space structures, comme...

AI Technical Summary

Problems solved by technology

There are many forms of existing CFST joints, most of which are complex in structure, difficult in construction, unclear in force transmission, and unclear in joint calculation models. Up to now, there is no relatively complete set of joint calculation theory and design methods in our country.

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