Shape memory alloy ring spring set and assembly type self-resetting pier system

Abstract

The invention relates to a shape memory alloy ring spring set and an assembly type self-resetting pier system. The invention aims to provide the shape memory alloy ring spring set which is simple in structure, relatively low in cost and reasonable in stress and the assembly type self-resetting pier system. According to the technical scheme, the shape memory alloy ring spring set is characterized in that the shape memory alloy ring spring set is provided with a steel bar, the steel bar is sleeved with an upper gasket and a lower gasket, an energy consumption and self-resetting mechanism is arranged between the upper gasket and the lower gasket, and a nut connected to the steel bar in a threaded mode is arranged above the upper gasket; the energy dissipation and self-resetting mechanism is provided with a plurality of refined steel inner rings arranged on the steel bars in a sleeving mode, and the two adjacent refined steel inner rings are jointly sleeved with a shape memory alloy outerring which can enable a certain gap to be kept between the two adjacent refined steel inner rings in the initial state and can be extruded and expanded by the refined steel inner rings when the refined steel inner rings are pressed and the gap is reduced. The method is suitable for the field of bridge engineering.

Description

technical field [0001] The invention relates to a shape memory alloy ring spring group and an assembled self-resetting pier system. Applicable to the field of bridge engineering. Background technique [0002] Although the bridge piers designed by the ductile design method can guarantee effective deformation and energy dissipation capacity, the bridge piers will produce permanent damage that is difficult to repair or even irreparable, and the social impact and economic impact caused by the maintenance or replacement of the damaged bridge Losses are even more unpredictable. [0003] In order to reduce the permanent deformation of bridge piers after earthquakes, many design concepts have been proposed, among which the rocking-self-resetting structure is considered to be one of the effective solutions. Compared with traditional fixed-foundation piers, the rocking-self-resetting bridge piers allow uplift under earthquake action, and the opening and closing of the rocking interf...

AI Technical Summary

Problems solved by technology

[0005] Most of the existing self-resetting bridge piers made of superelastic properties of shape memory alloys use shape memory alloys as shape memory alloy steel bars or shape memory alloy shock isolators. Doing so will greatly increase the amount of shape memory alloy used, resulting in high cost, and there will be material cutting in the process of making shape memory alloy steel bars, which will generate a large amount of material residue and cause waste

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