Due to the increasing number of people and activities within the cities, tall buildings are exploited worldwide to address the need for new living and commercial spaces, while limiting the amount of used land. In recent decades, the design of tall buildings has undergone a remarkable improvement, thanks to the development of new computational tools and technological solutions. This has led to the realization of innovative structural systems, like diagrids, which allow the achievement of high structural performances and remarkable architectural effects. In this paper, a thorough and updated review of diagrid structural systems is provided. Simplified methodologies for the preliminary design and structural analysis are reported. Special attention is also paid to the optimization of the structural response based on the geometrical pattern. A discussion of the effect of local deformability, stability and shear-lag phenomenon is carried out. Results from nonlinear and dynamic analyses for the seismic assessment of diagrid systems are reported, and attention is also paid to the recent research on diagrid nodes. Eventually, an overview of twisted, tapered, tilted and freeform diagrid towers is carried out, with a final mention of hexagrids, another recent evolution of tubular systems for tall buildings.

中文翻译：

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提高高层建筑结构效率和美学潜力的新趋势：斜肋板案例

由于城市内人口和活动的数量不断增加，世界各地都在开发高层建筑，以满足对新生活和商业空间的需求，同时限制已用土地的数量。近几十年来，由于新计算工具和技术解决方案的发展，高层建筑的设计有了显着的改进。这导致了创新结构系统的实现，如斜肋板，它可以实现高结构性能和显着的建筑效果。在本文中，提供了对斜肋结构系统的彻底和更新的审查。报告了初步设计和结构分析的简化方法。还特别注意基于几何图案的结构响应的优化。讨论了局部变形性、稳定性和剪切滞后现象的影响。报告了斜交网格系统地震评估的非线性和动力分析结果，同时也关注了近期对斜交网格节点的研究。最后，对扭曲的、锥形的、倾斜的和自由形状的斜向网格塔进行了概述，最后提到了六边形，这是高层建筑管状系统的另一个最新发展。