Novel self-balancing multi-stage energy-consuming anti-buckling support and manufacturing process

Abstract

The invention provides a novel self-balancing multi-stage energy-consuming anti-buckling support. The novel self-balancing multi-stage energy-consuming anti-buckling support comprises a core material,a casing pipe, first stiffening plate components, second stiffening plate components, first anti-buckling plates, second anti-buckling plates, connecting pieces, connecting plates and cover plates, wherein the core material comprises non-yielding sections, third yielding sections, second yielding sections and a first yielding section; the first yielding section is located in the middle of the core material; the second yielding sections, the third yielding sections and the non-yielding sections are respectively arranged at the two sides of the first yielding section; the first stiffening platecomponents, the second stiffening plate components, the first anti-buckling plates and the second anti-buckling plates are connected to the interior of the casing pipe, and then are arranged throughthe connecting pieces and the connecting plates to form a restraint device of the core material; the core material is located inside the restraint device; and the cover plates are located at the two ends of the casing pipe and are connected to the casing pipe. The invention also provides a manufacturing process of the novel self-balancing multi-stage energy-consuming anti-buckling support. The novel self-balancing multi-stage energy-consuming anti-buckling support has the advantages of uniform energy consumption, good ductility, excellent energy consumption, multi-stage energy consumption, andrelatively slow stiffness degradation after buckling.

Description

Technical field [0001] The invention belongs to the technical field of building structural engineering and bridge engineering structural vibration reduction, in particular to a novel self-balancing multi-stage energy-consuming anti-buckling support and manufacturing process. Background technique [0002] Earthquakes are one of the main natural disasters that threaten the safety of human life and property. In addition to direct damages such as house collapses and casualties, earthquakes can also cause fires, diseases and other secondary disasters, causing huge economic losses. The anti-buckling support as an excellent energy dissipation shock absorber has been widely used in the United States, Japan, China and other countries. When the structure with anti-buckling energy dissipation supports is subjected to dynamic loads such as earthquakes, the peripheral restraint elements can ensure that the internal core force element can reach the state of full-section yield under compression...

AI Technical Summary

Problems solved by technology

(1) The weaker yielding section in the buckling-resistant brace enters energy consumption under the action of small earthquakes and typhoons, and the stronger yielding section is in the elastic stage; under fortified earthquakes and rare earthquakes, the weaker yielding section in the buckling-resistant brace Displacement can still occur and continue to consume energy. If the stronger yield section reaches the ultimate stress, the weaker yield section will experience fatigue damage. The stress of the stronger yield section needs to be strictly controlled during design, which will lead to poor performance utilization of the material. Low, with certain potential safety hazards, not conducive to engineering applications

(2) The weaker yield section of the buckling-resistant brace is not constrained enough, and the weaker yield section is prone to out-of-plane instability, which will greatly affect the energy dissipation performance of the brace and the safety of the brace

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