A four-steel steel-constrained segmental buckling-resistant brace with replaceable cross-shaped inner core

Abstract

The invention relates to a four-steel-pipe constrained segmented type buckling-restrained brace with cross-shaped inner cores capable of being replaced, and belongs to the field of structural engineering. The buckling-restrained brace is composed of two edge section cross-shaped inner core components, n middle section cross-shaped inner core components, two edge section peripheral constraining devices with flange plates, n-1 middle section peripheral constraining devices with flange plates, 4*(n+1) inner core outer side connecting cover plates, a first high-strength bolt group and a second high-strength bolt group. On the basis of a component segmenting fabricated type design idea, the super-long and overweight buckling-restrained brace is divided into a plurality of sections, so that a lot of inconveniences in the processing, transporting and mounting processes of the super-long and overweight buckling-restrained brace are overcome. By arranging the inner core outer side connecting cover plates and through segmented jacking of the inner core components, axial force is transferred; plastic damage control is achieved by arranging a weakening area on the inner core components, the inner core components can be detached and replaced only by needing to dismounting the high-strength bolt groups and the inner core outer side connecting cover plates after an earthquake, and the defectthat inner core components cannot be replaced after the whole constrained type buckling-restrained brace is damaged is overcome.

Description

technical field [0001] The patent relates to a four-steel steel restraint segmented anti-buckling support with replaceable cross-shaped inner core, which belongs to the technical field of structural engineering. Background technique [0002] The anti-buckling support is composed of inner core member and peripheral constraining member. The inner core member bears axial pressure, and the outer member constrains the lateral displacement of the inner core member, so that its full section yields under the action of axial pressure. Since the Hanshin Earthquake in Japan and the Northridge Earthquake in the United States in the 1990s, anti-buckling braces have undergone a lot of engineering practice in some developed countries such as the United States and Japan. " and "energy dissipation under large earthquakes", making it one of the best energy-dissipating and shock-absorbing components, and it has been rapidly popularized and applied in recent years. [0003] At present, for the...

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Problems solved by technology

[0008] The present invention proposes a four-steel steel restraint segmented anti-buckling support with a replaceable cross-shaped core, aiming to solve the inconveniences of the existing ultra-long and super-heavy anti-buckling supports in the process of processing, transportation, and installation, as well as the post-earthquake Irreparable disadvantages, reduce costs, improve efficacy and timeliness, and also provide more options for heavy-duty buckling-resistant supports

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