Bending-type friction steel truss coupling beam for quick recovery after earthquake

A bending-type friction steel truss coupling beam for quick recovery after earthquake, wherein the bending-type friction steel truss coupling beam comprises an upper chord, a lower chord, diagonal web member, web member, T-plate and a friction device;

• the web member is vertically fixed between the upper chord and the lower chord;
• two diagonal web member, symmetrically with the web member as an axis, are fixed between the upper chord and the lower chord, upper end of the diagonal web member is fixed on end of the upper chord, lower end of the diagonal web member is fixed near lower end of the web member;
• flanges of the two T-plates are fixed on upper surface at both ends of the upper chord, respectively;
• the friction device comprises a T-type friction sliding plate, a friction plate, a cover plate and a friction type high-strength bolt;
• at both ends of lower surface of the lower chord, the friction plate, T friction sliding plate, friction plate and cover plate are installed in order;
• flange of the T-type friction sliding plate is provided with a long slot hole to enable slipping;
• same circular bolt hole is processed on the friction plate, cover plate and lower chord, and the position of the circular bolt hole corresponds to the position of the long slot hole on the T-type friction sliding plate;
• the friction device is connected and fixed with the lower chord by the friction type high-strength bolt and the nut;
• the cover plate, there is a gap between the cover plate, the lower chord and the flange end of the T-type sliding plate.