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本文探讨了单侧突变截面处最为不利的斜截面的应力。属于这类常见的工程有桥墩台顶帽的托盘,铰支盖版涵侧墙的顶端,悬臂简支支承处,以及衡重式挡土墙的衡重平台处等等。特别是衡重式挡土墙在衡重平台处的某一斜截面的拉应力,在本文实例中达正截面的1.58倍。笔者认为凡是单侧突变截面处均应以斜截面来计算其最不利的各种应力。文中并附有衡重式挡土墙平台处的截面、铰支盖版涵侧墙顶部两个计算对比实例,供参考。
This article explores the most unfavorable oblique cross-section stress at unilateral mutant cross sections. Belongs to this common project bridge pier top hat tray, hinged cover version culvert side of the top of the cantilever simply supported, as well as the weight of the retaining wall of the counterweight platform and so on. In particular, the tensile stress of a diagonal section of the counterweight retaining wall at the counterweight platform reaches 1.58 times the normal cross section in this example. I believe that all unilateral mutant cross-section should be oblique section to calculate the most unfavorable variety of stress. The paper is attached with the cross-section of the gravity-type retaining wall platform, two comparison examples of the top of the hinged cover plate-type side wall for reference.