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为了适应制订《钢筋混凝土门式刚架》全国通用标准图的需要。本文结合18M跨度的各种门式刚架(二铰与三铰;立柱内斜与外斜等)进行了有限单元法计算和整体工作的光弹性试验研究,着重分析了门式刚架转角处应力分布的特点及该处产生较大裂缝的原因。文中所列结果对研究其他刚构节点处的受力特点也有一定价值。
In order to meet the need to formulate a “National Standard for Reinforced Concrete Portal Frames”. In this paper, the light elasticity test of the finite element method and the overall work of the various portal frames (two hinges and three hinges; two internal hinges and three external hinges) of the 18-meter span are studied, and the angles of the portal frame are analyzed. The characteristics of stress distribution and the reasons for the occurrence of large cracks there. The results listed in this paper also have some value for studying the stress characteristics of other rigid structures.