Half-through bracket haunching type multibarrel tube-confined concrete column-steel beam node

Abstract

The invention discloses a half-through bracket haunching type multibarrel tube-confined concrete column-steel beam node, relates to a node connecting form of a multibarrel tube-confined concrete column and a steel beam, and belongs to the technical field of constructional engineering and bridge engineering. The node comprises the multibarrel tube-confined concrete column, the steel beam and a force-transmission component. The multibarrel tube-confined concrete column comprises an inner steel pipe, an outer steel pipe and poured concrete. The steel beam comprises upper and lower flanges and a web. The force-transmission component comprises a steel bracket and an oblique haunching plate. The steel bracket comprises upper and lower flanges and a web. One end of the steel bracket penetrates the outer steel pipe to be welded to the wall of the inner steel pipe, and the other end of the steel bracket is in bolt-weld connection with the steel beam. Meanwhile, the oblique haunching plate is welded between the steel beam and the multibarrel tube-confined concrete column. The half-through bracket haunching type multibarrel tube-confined concrete column-steel beam node is simple in structure, convenient in construction, high in rigidity and strength, good in anti-seismic property, clear in force transmission path, and the like. By the node, effective force transmission between the multibarrel tube-confined concrete column and the steel beam can be achieved.

Description

technical field [0001] The invention belongs to the fields of building structure engineering technology and bridge engineering technology, and in particular relates to a half-piercing corbel plus axillary composite steel pipe concrete column-steel beam joint design. Background technique [0002] Composite concrete-filled steel tube column is a new type of composite column developed on the basis of ordinary concrete-filled steel tube column. It can not only reduce the relative cross-sectional area, but also better restrain the core concrete, improve the bearing capacity, ductility and fire resistance of the column. purpose, and high-strength concrete can be used safely and reliably without considering the influence of the axial compression ratio limit. Therefore, the composite steel pipe concrete structure has sufficient anti-seismic and anti-collapse safety reserves, and can be applied to engineering structures in high-seismic fortification areas. As a key link in structura...

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Problems solved by technology

As a key link in structural design, joints have always been a work that cannot be ignored by engineers. However, the research on the joints of composite steel pipe concrete columns is still in its infancy. It is suitable for the joint form of composite steel pipe concrete structures, especially steel beams and composite The joints of CFST columns are still relatively few, so it is necessary to study the reasonable form of beam-column joints in order to popularize the application of the superior structural form of composite steel tube concrete structures in engineering practice

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