Bilingual teaching of the principles of steel structure design should solve the difficult problem that the course teaching is out of the practice,and select the teaching material for audiovisual bilingual teaching and teaching practice base to improve teaching effect.

Against to the light weight steel structure irrational problems in practical design process,through analyzing the pillar calculated length formula in portal rigid regulation,the drawbacks of existing steel structure design method were reflected,the urgency of adopting high grade analyzing method was proposed so as to complete steel structure design.

Study on the introduction of the course of the design theory for concrete structure;