Twisted forms have been widely employed in high‐rise buildings in recent years. The diagrid structural system is particularly suitable for twisted buildings because of its large lateral stiffness and unique architectural esthetics, but little research on twisted diagrid tube structures is currently available. This paper studies the influence of diagonal angle, twist rate, aspect ratio, corner column, and plan form on the lateral stiffness of twisted diagrids, and the optimal diagonal angle range is determined. Considering the stiffness and strength criteria, the design methodology of diagonal sizes of twisted diagrids is proposed, and the methodology is validated by finite element analysis. In addition, this paper presents a novel configuration of twisted diagrid, that is, the twisted diagrid with asymmetric diagonal angles. The influence of the left‐ and right‐inclined diagonal angle on the lateral stiffness of twisted diagrids is investigated. It is found that twisted diagrid structure with asymmetric diagonal angles exhibits larger lateral stiffness than the symmetric case. The results in this paper are useful for engineers to determine the configuration and diagonal sizes of the twisted diagrid tube structures.

中文翻译：

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斜斜管结构的侧向刚度和初步设计方法

近年来，扭曲形式已广泛用于高层建筑中。斜交结构结构系统由于其较大的侧向刚度和独特的建筑美学而特别适合于扭曲的建筑物，但是目前对扭曲的斜交管结构的研究很少。本文研究了斜角，扭曲率，长宽比，角柱和平面形状对扭曲斜锯齿的横向刚度的影响，并确定了最佳斜角范围。考虑到刚度和强度准则，提出了斜斜交桥对角线尺寸的设计方法，并通过有限元分析对其进行了验证。另外，本文提出了一种新型的扭曲斜交链结构，即具有不对称对角的扭曲斜交链结构。研究了左，右倾斜对角线对斜锯齿的横向刚度的影响。发现具有不对称对角的扭曲斜交链结构比对称情况具有更大的横向刚度。本文的结果对于工程师确定扭曲斜交管结构的配置和对角线尺寸非常有用。