During the design process of monolithic ribbed slabs, engineers face a common issue how to correctly evaluate stiffness of the beams. When Bar and Plate elements are used for analysis of the slabs, the neutral axis of those members are in the same level, therefore the stiffness of (T) shape cross-section is not considered correctly in the calculations. In this case the internal forces are obtained incorrectly as well as deflections of the beams are overestimated. A simple method is discussed in this paper, which allows engineers to calculate internal forces and deformations of mentioned type slabs more accurately with FEM programs by using Bar and Plate elements. The method is based on Bar elements moment of inertia adjustment.
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机译：在整体式肋板的设计过程中，工程师面临一个共同的问题，即如何正确评估梁的刚度。当使用棒板元素分析板时，这些构件的中性轴处于同一水平，因此在计算中未正确考虑（T）形截面的刚度。在这种情况下，会错误地获得内力，并且梁的挠度也会被高估。本文讨论了一种简单的方法，该方法允许工程师使用FEM程序，通过使用Bar and Plate元素，更精确地计算上述类型平板的内力和变形。该方法基于Bar元素的惯性矩调整。
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