The familiar teaching mode is injected with renewed spirit while Tri-component theory is applied in compiling of information technology teaching material.

The thesis come from the analysis of stationary type tri-oil wedge dynamic-pressure sliding bearing dynamic working condition, analyse its elements and stress in variable-load operating mode.

The distinctive working mechanism of HFRP strengthening columns was analyzed, and an ultimate strength mode and a tri-liner stress-strain model were put forward correspondingly.