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Approximate analysis of quadrilateral slabs having various cases of boundary conditions and aspect ratios
Advances in Structural Engineering ( IF 2.6 ) Pub Date : 2021-01-07 , DOI: 10.1177/1369433220982099
Mohammad A Alhassan 1, 2 , Rajai Z Al rousan 2 , Moheldeen A Hejazi 2 , Layla K Amaireh 1
Affiliation  

This paper provides an approximate analysis of quadrilateral slabs having various cases of aspect ratios and boundary conditions based on actual two-way action. Nine slabs with different boundary conditions, each having 11 aspect ratios were analyzed using SAP2000 software, thereafter, robustly validated against mathematical solutions. In this article, the hydrostatic point phenomenon was established as a reference point for identifying the slabs with actual two-way action and as a growth reference for other cases. This allows for the use of growth models for the hydrostatic and deviatoric moment tensors. The innovative selection of the extreme positive point moment facilitates the introduction of materials nonlinearity into the design. The plate shorter dimension was used for moment normalization in both directions to preserve the directional influence of the dimensions and to isolate the hydrostatic phenomenon. Through starting at a point of hydrostatic phenomenon occurrence and via fixing one of the plate’s dimensions and extending the other (for any boundary conditions), the extreme point’s Mohr circle develops from the hydrostatic point phenomenon as a growth in the hydrostatic component and drastic growth in the deviatoric component. Subsequently, the largest principal moment develops a higher magnitude as the aspect ratio increases. Furthermore, the non-identical boundary conditions on two perpendicular directions result in a deviation of the two-way action.



中文翻译:

具有各种边界条件和纵横比的四边形平板的近似分析

本文基于实际的双向作用,对具有不同长宽比和边界条件的四边形平板进行了近似分析。使用SAP2000软件分析了9个具有不同边界条件的平板,每个平板具有11个长宽比,然后针对数学解进行了稳健的验证。在本文中,建立了静水点现象作为识别具有实际双向作用的板坯的参考点,并作为其他情况下的增长参考。这允许将增长模型用于静水压和偏斜矩张量。极端正点力矩的创新选择有助于将材料非线性引入设计中。板的较短尺寸用于两个方向的矩量归一化,以保留尺寸的方向影响并隔离静水现象。通过在发生静水现象的某个点开始并固定一个板的尺寸并扩展另一个板的尺寸(在任何边界条件下),极端点的莫尔圆便从静水点现象发展为静水分量的增长,而静应力急剧增长。偏斜分量。随后,随着长宽比的增加,最大的主力矩会增大。此外,在两个垂直方向上的边界条件不同会导致双向作用的偏离。通过在发生静水现象的某个点开始并固定一个板的尺寸并扩展另一个板的尺寸(在任何边界条件下),极端点的莫尔圆便从静水点现象发展为静水分量的增长,而静应力急剧增长。偏斜分量。随后,随着长宽比的增加,最大的主力矩会增大。此外,在两个垂直方向上的边界条件不同会导致双向作用的偏离。通过在发生静水现象的某个点开始并固定一个板的尺寸并扩展另一个板的尺寸(在任何边界条件下),极端点的莫尔圆便从静水点现象发展为静水分量的增长,而静应力急剧增长。偏斜分量。随后,随着长宽比的增加,最大的主力矩会增大。此外,在两个垂直方向上的边界条件不同会导致双向作用的偏离。随着长宽比的增加,最大的主力矩会增大。此外,在两个垂直方向上的边界条件不同会导致双向作用的偏离。随着长宽比的增加,最大的主力矩会增大。此外,在两个垂直方向上的边界条件不同会导致双向作用的偏离。

更新日期:2021-01-08
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