就国内现有的薄壁钢梁弯扭失稳理论进行了分析，从薄壁杆件的一般理论出发，推导出荷载过截面弯心并与主轴平行的受弯钢梁的临界弯矩公式。
On the base of the general theory of thin-walled members, we deduce a new critical moment formula of steel beam under transverse loads which pass the shear center and parallel to the main axis.
从而突破了弯心不共线薄壁杆件体系计算困难的问题，显示了这种计算方法的优越性。
Some difficulties in calculation of thin-walled structures with "plane bending theory" and "constrict twist theory" are overcome, showing the advantages of this method.
本文分析了试验过程中摆杆形变对柔性接头摆心、摆角数据的影响。
This paper analyzes the influence on the pivot point and deflection angle from the pendulum shaft's deformation in course of the test.
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