Semi-precast concrete filled steel tubular column with built-in high-strength structural steel and manufacturing method thereof

Abstract

The invention discloses a semi-precast concrete filled steel tubular column with built-in high-strength structural steel and a manufacturing method thereof. The semi-precast concrete filled steel tubular column comprises a steel pipe and a plurality of precast concrete segments sequentially arranged in the steel pipe at intervals in the vertical direction; gaps are reserved between the inner wall of the steel pipe and the outer walls of the precast concrete segments; a vertical through structural steel channel is reserved in the middle of each precast concrete segment and used for mounting the structural steel; gaps are reserved between the walls of the structural steel channels and the outer surface of the structural steel; grouting materials are poured in the steel pipe; and the gaps between the precast concrete segments, the gaps between the walls of the structural steel channels and the outer surface of the structural steel and the gaps between the outer walls of the precast concrete segments and the inner wall of the steel pipe are all fully filled with the grouting materials. According to the manufactured semi-precast concrete filled steel tubular column with the built-in high-strength structural steel, under the requirement for the same bearing capacity, the sectional dimension of the column can be remarkably reduced, and therefore the usable area of a building is enlarged, and good economic and social benefits are achieved.

Description

technical field [0001] The invention relates to a concrete column, in particular to a semi-prefabricated steel tube concrete column with built-in high-strength section steel and a preparation method thereof. Background technique [0002] Due to the huge vertical loads of the lower columns of super high-rise building structures, their cross-sectional dimensions are usually large, which not only occupies more building space and affects the use of buildings, but also increases the seismic action of the structure due to the increase in the self-weight of the components. , which is detrimental to the seismic resistance of the structure. [0003] In recent years, the production and application of high-strength steel have become increasingly mature, and the use of this type of material is undoubtedly beneficial to reducing the cross-sectional size of the column. However, since the compression buckling of high-strength steel is often earlier than its compression yield, the advantag...

AI Technical Summary

Problems solved by technology

However, if the column is prefabricated as a whole, due to its heavy weight, it will bring great difficulties to subsequent transportation and hoisting; if the column is prefabricated in sections and then spliced ​​on site, it may be weakened due to the integrity of the column. Reduced force performance

Images