Connection structure for concrete-filled circular steel tubular pier column and concrete cover beam

Abstract

The invention discloses a connection structure for a concrete-filled circular steel tubular pier column and a concrete cover beam. The connection structure comprises a reverse T-shaped steel beam, the concrete cover beam and the concrete-filled circular steel tubular pier column, wherein the reverse T-shaped steel beam is pre-buried at the lower end of the concrete cover beam. The connection structure is characterized by also comprising a steel tubular cover plate and a riveting rib with a nut, wherein the steel tubular cover plate is welded with the upper end of the concrete-filled circular steel tubular pier column; the hole on the web plate of the reverse T-shaped steel beam is connected with the concrete; a flange plate of the T-shaped steel beam is fixedly connected with the steel tubular cover plate through the riveting rib with the nut; and the two ends of the riveting rib with the nut are embedded in the concrete cover beam and the concrete-filled circular steel tubular pier column. The connection structure needs no complex arrangement of reinforcement, and each component can be processed in the factory and assembled on site. Only welding of a triangular supporting steel plate and the steel tubular cover plate is needed on site so as to ensure small workload and definite force transferring path. The connection structure has the advantages of simple and quick construction during the implementation.

Description

technical field [0001] The invention relates to the connection of pier structures in bridge engineering, in particular to the connection of circular steel tube concrete pier columns and concrete cover beams. Background technique [0002] Concrete bridge piers have a large cross-sectional area and require a large amount of road space, which cannot meet the increasingly busy urban traffic needs. However, the amount of steel used for steel bridge piers is too large, and the cost is high. Combining the respective advantages of steel and concrete, CFST is an ideal bridge pier structure with small cross-sectional area, low cost, high bearing capacity, good ductility, and construction without formwork. Concrete filled steel tubes are used for the pier columns of urban bridges, and reinforced concrete is still used for the bridge pier cover beams, which meets the needs of space and force, and the cost can be controlled within a reasonable range. [0003] Compared with square concr...

AI Technical Summary

Problems solved by technology

The force of the bridge pier joints is complex, and the form of beam-column joints in construction engineering cannot be applied to bridge pier joints

Literature search shows that there is no report on the structural design of the connection structure between the circular concrete filled steel pipe concrete pier column and the concrete cap beam joint

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