A net-shaped small hole is arranged on the seepage plate, and a longitudinal drainage groove and a groove which is vertically communicated with the drainage groove are arranged on the guided plate.

For the full development of beam ductility, different kinds of anchorage of beam reinforcements in the joint core and groove welded connction on longitudinal main beam b…

The bidirectional glass fiber drawing groove wedge has both longitudinal strength and latitudinal strength, and better thermal state performance;