A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A high energy dissipation self-resetting beam-column joint based on shape memory alloy screws comprises a beam end assembly, a column end assembly, an energy-dissipating element, a self-resetting element and a shear-resistant element. The energy-dissipating element is made of a low-strength high-energy-dissipation steel angle, and two limbs of the steel angle are connected with a column flange and a beam flange through high-strength bolts, respectively. The self-resetting element is made of a shape memory alloy screw having super elasticity, one end of the screw is connected with a column, and the other is connected with a beam. The shear-resistant element is made of a double-side shear-resistant plate having an elongated bolt hole. The shape memory alloy screw needs to be applied initial prestress to ensure that the screw is constantly stressed during operating. The invention further provides a method of thermally treating and training the shape memory alloy screw and a method of applying the initial prestress to the shape memory alloy screw. The invention has the advantages that higher initial screw prestress may be applied, initial rigidity is higher, self-resetting capacity is excellent, and hysteretic energy capacity is better.
A high energy dissipation self-resetting beam-column joint based on shape memory alloy screws comprises a beam end assembly, a column end assembly, an energy-dissipating element, a self-resetting element and a shear-resistant element. The energy-dissipating element is made of a low-strength high-energy-dissipation steel angle, and two limbs of the steel angle are connected with a column flange and a beam flange through high-strength bolts, respectively. The self-resetting element is made of a shape memory alloy screw having super elasticity, one end of the screw is connected with a column, and the other is connected with a beam. The shear-resistant element is made of a double-side shear-resistant plate having an elongated bolt hole. The shape memory alloy screw needs to be applied initial prestress to ensure that the screw is constantly stressed during operating. The invention further provides a method of thermally treating and training the shape memory alloy screw and a method of applying the initial prestress to the shape memory alloy screw. The invention has the advantages that higher initial screw prestress may be applied, initial rigidity is higher, self-resetting capacity is excellent, and hysteretic energy capacity is better.
High energy dissipation self-resetting beam-column joint and methods based on shape memory alloy screws
2016-01-20
Patent
Electronic Resource
English
IPC:
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
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