In this paper, a improved geometric stiffness matrix of a column element considering axial force-lateral displacement effects is derived.

本文推导了柱单元受大轴力和单元变形过大两种情况下的单元几何刚度矩阵。

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For the dynamic behaviour of piles, a beam-column element was used for considering the axial force-dependency as well as the volume effect.

对于桩的动力本构行为，则采用了可以考虑体积效应和轴向力影响的梁—柱单元来模拟。

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In this paper, based on beam-column element and single slice wall, a tube wall element is proposed, and is applied to push-over analysis for tall concrete structures.

本文在梁柱单元、单片墙单元的基础上提出了一种筒体墙单元，并将此单元应用于高层混凝土结构推覆分析中。

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As for updating the periodic table, element 118 would slot in just below radon in the column that contains inert gases.

ECONOMIST: Nuclear physics