Clamping plate type lockable sliding joint suitable for laminated open-web truss

The invention relates to a clamping plate type lockable sliding joint suitable for a laminated open-web truss, which is used for connecting web members among all assembly type units, and the laminated open-web truss is split into the assembly type units at the midspan of chord members and the midpoint of every two layers of web members. The node comprises a web member, a sliding block, a clamping plate, a transverse end plate and a positioning plate. In the construction stage, the joint can adapt to bending deformation of the web member in the horizontal direction and transmit shearing force; the single-layer open-web truss can slide in the vertical direction, the adverse effects of accumulation of vertical loads of an upper unit to the bottom layer and compression deformation of a vertical component at the supporting end in construction are eliminated, the internal force of each single-layer open-web truss is uniform, the structural stress is improved, and the construction difficulty is lowered. The joint is