论文部分内容阅读
一、前言想要掌握钢筋混凝土板在弹性阶段之后的力学性能的愿望,很久以来,是许多结构设计人员和研究工作者最关心的事。他们最初的兴趣,是针对板的极限承载能力的予测,其成果使1943年K.W.Johansen的屈服线理论系统化了。但是,这个理论只仅仅给出极限承载力,所以,对于破坏前板的力学性状,未能提供任何种情报。近年来,随着电子计算机的发展,复杂结构的弹塑性分析已成为可能,特别是由于有限单元法的引入,钢筋混凝土板和曲面板从弹性阶段到极限的性状,已经提供了好多的成果。有限
I. INTRODUCTION The desire to master the mechanical properties of reinforced concrete slabs after the elastic stage has long been a concern for many structural designers and researchers. Their initial interest was to predict the ultimate bearing capacity of the board, and the result was the systematicization of K.W. Johansen’s yield line theory in 1943. However, this theory only gives the ultimate bearing capacity. Therefore, it failed to provide any kind of information on the mechanical properties of the damaged front plate. In recent years, with the development of electronic computers, elasto-plastic analysis of complex structures has become possible. In particular, due to the introduction of the finite element method, the characteristics of reinforced concrete slabs and curved panels from the elastic stage to the limit have provided a lot of results. limited