Steel-solid waste concrete combined bearing platform with composite structure and construction method thereof

Abstract

The invention provides a steel-solid waste concrete combined bearing platform with a composite structure and a construction method thereof. According to the steel-solid waste concrete combined bearing platform with the composite structure and the construction method thereof, six steel plates are adopted to form a closed box body, so that the tensile strength and the crack resistance of the outermost layer of the bearing platform are improved, and the bearing capacity and the rigidity of the bearing platform are greatly improved; a shear-resistant truss is arranged between a column foot and a pile body, and effective transmission of concentrated loads is achieved through the multiple pieces of profile steel arranged in the inclined direction; and stress coordination trusses are arranged between the adjacent concrete-filled steel tube piles to enhance the overall coordination between the concrete-filled steel tube piles, the shear-resistant trusses and the stress coordination trusses greatly increase the interface bonding degree of the steel tubes and the bearing platform, reinforcing connecting plates are arranged at the joints of the steel tubes and the steel plates to increase the connecting degree of the steel tubes and the steel plates, and the integrity of the whole combined bearing platform is greatly improved. Solid waste concrete with the solid waste replacement rate lower than 30% is adopted in the bearing platform box body, the adverse effect caused by shrinkage of mass concrete can be relieved, and the demonstration effect on engineering application and popularization of the solid waste concrete is achieved.

Description

technical field [0001] The invention relates to a steel-solid waste concrete composite cap with a composite structure and a construction method thereof, belonging to the technical field of steel-concrete composite structures. Background technique [0002] The cap is an important node connecting the superstructure and the foundation pile. On the one hand, it is necessary to reliably transmit the axial force, shear force and bending moment transmitted by the vertical member, and on the other hand, it is necessary to distribute and transmit these loads to different piles. The reliability of the cap is directly related to the safety of the structure, once damaged, it may cause the entire structure to collapse. For concrete-filled steel tube columns, the most commonly used method in engineering is to embed them in reinforced concrete caps, and set shear bolts on the outside of the steel tubes to improve the mechanical interlocking force of the interface, but local compression dam...

AI Technical Summary

Problems solved by technology

For concrete-filled steel tube columns, the most commonly used method in engineering is to embed them in reinforced concrete caps, and set shear bolts on the outside of the steel tubes to improve the mechanical interlocking force of the interface, but local compression damage still occurs, and the upper surface Failure modes such as steel bar yielding, local shear failure, column bottom shear failure, and overall punching shear failure

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