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本文所述的有限分段法,其优点是:(1)所需的计算机内存少,适于在目前国内常用的中小型计算机上使用;(2)对于变高度箱梁,考虑了将各梁段按等高度梁段计算所产生的影响;(3)只要求箱梁横截面具有一个竖向对称轴;(4)适用于多室箱梁和梯形截面箱梁。对于小曲率的单室曲梁也可作近似计算。本文在叙述了此方法基本原理后,还分析了箱梁约束扭转计算中的一些问题。
The finite segmentation method described in this paper has the following advantages: (1) less computer memory is required and suitable for the small and medium-sized computers commonly used in China at present; (2) (3) It is only required that the cross section of box girder has a vertical axis of symmetry; (4) It is applicable to multi-room box girder and trapezoidal section box girder. For small curvature single-chamber curved beam can also be approximated. After describing the basic principle of this method, this paper also analyzes some problems in the calculation of box girder constrained torsion.