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.
同时对外载等效中常出现的横向
力矩这一广义力进行研究,指出它在开口和闭口
壁梁约束扭转问题中和圣维南原理适用条件中
别占有不同的地位。