Prestress-free self-centering energy-dissipative tension-only brace

A prestress-free self-centering energy-dissipative tension-only brace, comprising a self-centering mechanism, an energy dissipation mechanism, a high strength steel cable (5), and a sleeve (1), wherein

• the self-centering mechanism comprises a sliding end plate (6), a spring (2), and a connection rod (7);
• one end of the spring (2) is connected with an inner wall of the sleeve (1), and another end of the spring (2) is connected with the sliding end plate (6);
• one end of the connection rod (7) is anchored to the sliding end plate (6), and another end of the connection rod passes through a fixed end of the spring (2);
• the energy dissipation mechanism comprises chains (4), a cross-shaped connecting piece (8), rotating shafts (9), rotating wheels (3) capable of rotating around the rotating shafts (9), and friction plates (13);
• the rotating shafts (9) are fixed to the sleeve (1);
• the friction plates (13) are arranged on two sides of the rotating wheels (3) to pre-press the rotating wheels (3) and are connected in series through the rotating shafts (9);
• the chains (4) are connected with the two rotating wheels (3);
• two sides of the cross-shaped connecting piece (8) are connected with the chains (4), respectively, and other two sides of the cross-shaped connecting piece (8) are anchored to the connection rod (7) and the high strength steel cable (5), respectively.