A four-angle steel fully assembled anti-buckling bracing that can directly replace the cross-shaped core

Abstract

The invention relates to a four-steel-angle fully-assembled-type buckling-restrained brace with crossed inner cores capable of being directly replaced, and belongs to the field of structural engineering. The buckling-restrained brace comprises two crossed inner core components, a four-steel-angle assembled-type peripheral restraining device, four inner core outer side L-shaped connecting pieces and a first high-strength bolt group. On the basis of the inner core segmented-assembled-type design concept, axial pressure is transmitted through segmented jacking of the crossed inner core components, the inner core outer side L-shaped connecting pieces and the first high-strength bolt group transmit axial tension, dog-bone weakening areas or grooving weakening areas are arranged on the crossed inner core components to control an inner core component plastic development area, thus the buckling-restrained brace meets basic bearing and energy consumption, meanwhile, the two inner core components can be detached from the peripheral restraining device only by detaching the first high-strength bolt group and the inner core outer side L-shaped connecting pieces after an earthquake, the defect that a peripheral restraining device needs to be detached when inner cores of a traditional assembled-type buckling-restrained brace are replaced is effectively overcome, and post-earthquake restore work is optimized.

Description

technical field [0001] The patent relates to a fully-assembled anti-buckling brace of four-angle steel that can directly replace a cross-shaped inner core, and belongs to the technical field of structural engineering. Background technique [0002] The anti-buckling support is composed of inner core member and peripheral restraint device. The inner core member bears axial pressure, and the peripheral device constrains the lateral displacement of the inner core member, so that the 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,...

AI Technical Summary

Problems solved by technology

[0007] The present invention proposes a fully-assembled anti-buckling brace of four-angle steel that can directly replace the cross-shaped inner core, aiming to solve the problem that the existing assembled anti-buckling brace needs to be disassembled for repairing after an earthquake and cannot directly replace the inner core component. disadvantages, improve efficacy and timeliness, optimize post-earthquake repair work, and provide more options for prefabricated anti-buckling braces

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