用偏心受压法求桥跨结构的横向分布系数,其广泛的适应性和计算的简捷,为任何弹性分布方法所不及。为了补救其计算结果偏大的缺陷,特别是对抗扭刚度特大的箱形断面,国内外广泛地研究考虑截面抗扭刚度加以修正。这种办法很好,既能使之不失偏压法的优点,又能对其结果偏大的弱点有所弥补。因此偏压修正法是一个具有较高实用价值的近似法。 Eccentric compression method is used to find the transverse distribution coefficient of bridge span structure. Its wide adaptability and simple calculation are beyond the reach of any elastic distribution method. In order to remedy the defect that the calculation result is too large, especially for the box-shaped section with large torsional stiffness, the torsional rigidity of section is widely studied and revised at home and abroad. This approach is very good, both to make it possible to offset the advantages of bias law, but also to remedy the weakness of their results. Therefore, bias correction method is a practical method of approximation.