All-steel four-steel pipe multistage mountable overlong buckling-restrained brace

Abstract

The invention discloses an all-steel four-steel pipe multistage mountable overlong buckling-restrained brace, and belongs to a novel energy dissipation and seismic mitigation component. On the basis of the traditional buckling-restrained brace, the steel core and the outer restraining component are manufactured and transported in stages and mounted at the construction site. By using the peripheral restraining mechanisms of four hollow steel pipes, the weight of the overlong buckling-restrained brace is effectively reduced so as to solve the difficulties that the general buckling-restrained braces are overlong to cause overlarge self-weight and the initial deflection cannot satisfy the existing requirements. The working section of the steel core is changed from one section to a plurality of sections, so that the stress of the steel core is more uniform and reasonable; the sections are connected to ensure that the length can be up to 30-50 meters; the all-steel four-steel pipe multistage mountable overlong buckling-restrained brace can be applied to the air cooling platform and special structures such as the large-scale industrial buildings and the like to improve the functionality of the buildings through increasing the structural rigidity, and can also be used for protecting the main structure under the design intensity, severe intensity and super-large earthquakes through self-buckling energy consumption.

Description

technical field [0001] The invention is an all-steel four-steel tube multi-segment assembling ultra-long anti-buckling support, which belongs to an energy-dissipating and shock-absorbing component, and is mainly used in the field of energy-dissipating and shock-absorbing control in building structures. Background technique [0002] In recent years, the construction of special industrial buildings such as large-scale air-cooling platforms, industrial plants, and large hangars has accelerated. These lifeline projects related to the national economy and the people's livelihood need new technologies to support them. Ordinary steel supports are prone to compression instability during earthquakes, resulting in a rapid decline in structural stiffness and bearing capacity, seriously affecting the safety of the structure. Buckling-resistant braces or buckling-restrained braces and unbonded braces are efficient energy-dissipating components that can yield without buckling under tensio...

AI Technical Summary

Problems solved by technology

If the inner-filled concrete steel casing is used as the anti-buckling brace of the constraining member, the self-weight has a great influence on the deformation, and the scope of application is limited; the buckling-resistant brace of the ordinary all-

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