Abstract: This paper proposed the simplified calculation scheme for analysis of transverse internal forces of single-cell box girder, and made out the numerical computer PC-1500 program using finit stripe method. Combined with the several box cross-sectional dimensions and National Load Standard of Highway Bridge Norm, the analysis was completed in detail. Based on the work, the author presented the additional recommendable formulas with respect to effective width of load-distribution, which may be used as a reference for design and modification of highway bridge norm.

摘要： 本文提出了分析单室箱梁横向内力的简化计算图式,编制了有限条法的PC-1500计算机程序,并结合几种箱梁截面尺寸和我国《桥规》的荷载标准作了详细分析,在此基础上,提出了荷载分布宽度的补充建议公式,可供设计及修订规范时参考。