Self-recovering energy dissipation steel support with shape memory alloy damper

A self-recovering energy dissipation support with a shape memory alloy damper, comprising a shape memory alloy damper (1) and cross-shaped steel columns (2), wherein the shape memory alloy damper (1) comprises two sets of rectangular steel-tube inner sleeves (3) and two sets of outer sleeves (4);

• a damper inner end plate (7) with holes (14) is arranged in each inner sleeve (3);
• the two sets of inner sleeves (3) are connected by inserting shape memory alloy ribs I(10) into the damper inner end plates (7) with holes in a stretching and anchoring manner;
• the two sets of inner sleeves (3) and outer sleeves (4) are respectively connected by inserting shape memory alloy ribs II(11) into inner sleeve connecting plates (6) with holes (15) and outer sleeve connecting plates (9) with the holes (16) in a stretching and anchoring manner;
• the outer sleeves (4) of the shape memory alloy damper are connected with cross-shaped steel column end plates (12);
• and the cross-shaped steel columns (2) are connected with an external building structure through a semicircular connecting plate (13) with a bolt hole (17) at an end.