1.A new point is put forward that transverse bimoment has different influence on the two kinds of cross section thin-walled beams, and on their St-Venant principle conditions. 2.
同时对外载等效经常
现的横向双力矩这一广义力进行研
,
它在开口
闭口
壁梁约束扭转问
圣维南原理适用条件
分别占有不同的地位。