Rod type core bar bending restrain steel support

Abstract

The invention relates to a rod type core bar bending restrain steel support which solves the problems of large difference of rigidity and stability of all directions of an energy dissipation section of the traditional bending restrain support, difficult support installation and complex restrain construction. A core main stress part comprises an energy dissipation section, conversion sections and an installation section, wherein the energy dissipation section is a solid steel bar or hollow steel pipe; an outer restrain steel part comprises a local restrain steel member and an integral restrainsteel member, the local restrain steel member comprises a core bar steel sleeve, the integral restrain steel member comprises a delay steel frame fixed outside the core bar steel sleeve and an auxiliary steel cylinder; one section of the two conversion section is in friction contact with the steel cylinder of the conversion section and a gap is remained between the core bar steel sleeve and the delay steel frame. The section of the energy dissipation section of the support has uniform size in all directions, which eliminates the difference of the rigidity and the stability of different directions, thus the local stable bearing capacity and the integral bending-preventing capacity are high, and the working reliability under large axial direction strain and strong shock is high; and the rodtype core bar bending restrain steel support is convenient for installation, and is suitable for engineering earthquake fortification and reinforcement.

Description

technical field [0001] The invention relates to the field of anti-seismic and disaster prevention of structural engineering, in particular to a buckling-constrained support in an engineering structure, in particular to a buckling-constrained steel support of a rod-type core rod. Background technique [0002] Traditional steel braces can yield and dissipate energy when under tension, but buckling instability occurs when under compression, and the bearing capacity under compression is low, unable to yield and dissipate energy, and its seismic performance is not good. The buckling-restrained brace is an axially stressed member that does not buckle and become unstable under compression, also known as the anti-buckling brace. It will not cause buckling instability, so as to achieve the plastic yield of the whole section. Under the reciprocating action of horizontal earthquakes, the main stress-bearing parts of the buckling-restrained bracing can yield not only when the axial cen...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problems that the existing energy-dissipating section steel limbs supported by buckling constraints have large differences in stiffness and stability in different directions, and the resulting poor local stability, difficult support construction and installation, and complex constraint structure structures, the present invention provides A buckling-constrained steel support with rod-type core rods with uniform stiffness stability in all directions, excellent performance, easy installation and connection, and simple structure

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