Connection of prefabricated concrete-filled steel tubular column and sandwich concrete composition board and construction process

Abstract

The invention provides a connection of a prefabricated concrete-filled steel tubular column and a sandwich concrete composite board as well as a construction process. The connection comprises a concrete-filled steel tubular column body, a steel plate sandwich concrete composite board body and a connection assembly, wherein the concrete-filled steel tubular column body comprises a steel tube and anoutwards-extending composite board, pouring concrete is arranged in the steel tube, the outwards-extending composite board comprises an outwards-extending composite board steel plate, a first connecting hole is formed in the middle of the outwards-extending composite board steel plate, the steel tube penetrates through the first connecting hole and is welded to the outwards-extending composite board steel plate, the concrete is poured into the steel tube and the outwards-extending composite board steel plate, the steel plate sandwich concrete composite board body comprises an upper steel plate and a lower steel plate, the pouring concrete is arranged between the upper steel plate and the lower steel plate, a second connecting hole is formed in the steel plate sandwich concrete composite board body, and the steel tubular column body penetrates through the second connecting hole and is connected to the steel plate sandwich concrete composite board body through the connecting assembly. The lateral rigidity of a column plate structure is large, the column body and the board body are tightly connected, and internal force can be well transmitted.

Description

technical field [0001] The invention belongs to the field of building structures, and in particular relates to a connection between a prefabricated steel pipe concrete column and a sandwich concrete composite plate and a construction process. Background technique [0002] In construction engineering, in order to save the space occupied by the primary and secondary beams, make the structural space layout more flexible and the plane layout more diverse, the column-slab composite structure can be used for design and construction. The column-slab composite structure is composed of floors and columns. Load-bearing system of the house structure. At this stage, the column-slab composite structure is mainly constructed by the cast-in-place method, that is, the column-slab joints are formed by cast-in-place concrete. The joints of this construction method are prone to stress concentration, and the stress danger area is prone to fracture under the load, and the existing The pouring m...

AI Technical Summary

Problems solved by technology

However, the ordinary prefabricated concrete column-slab composite structure has the disadvantages of small lateral stiffness, poor ductility, poor shear capacity, unbalanced bending moment between the slab and the column, etc., and is prone to brittle failure under the action of earthquake load, so it is suitable Choose a composite structure with better mechanical properties to make the slab-column members of the system and connect the nodes in a reasonable way so that the two can work together

Images