This paper provides a general perspective of the seismic performance of a nature-inspired, honey-comb grid structural system, known as a hexagrid, under near-field ground motions. Seismic performance of this skeleton is then compared to that of a bundled-tube, as a conventional and efficient load-resisting system in order to provide a better perception of the seismic behavior of a hexagrid skeleton. Two 20-story buildings with bundled-tube and hexagrid skeleton were studied. Nonlinear behavior of the structures was investigated through 3-D finite element computer models and nonlinear time history analyses by subjecting the models to seven three-component records of scaled near-field ground motions. Distribution of peak inter story drift and corner beam-column joint rotations were calculated and compared. Results indicated that by replacing the exterior columns of the bundled-tube system with inclined beam-column elements of nature-inspired hexagons, lateral stiffness of the building increased and it would tolerate less deformations before global dynamic instability is reached. The presence of inclined columns in the hexagrid skeleton helped to concentrate local nonlinearities in ring beams rather than exterior columns.

本文提供了一种受自然启发的蜂窝网格结构系统（称为六边形网格）在近场地面运动下的抗震性能的一般观点。然后将该骨架的抗震性能与束管的抗震性能进行比较，作为传统且有效的抗负载系统，以便更好地了解六边形骨架的抗震性能。研究了两栋20层的束管和六边形骨架建筑。通过 3-D 有限元计算机模型和非线性时程分析，通过对模型进行缩放的近场地面运动的七个三分量记录来研究结构的非线性行为。计算并比较了峰值层间漂移和角梁柱节点旋转的分布。结果表明，通过用受自然启发的六边形倾斜梁柱元件替换束管系统的外柱，建筑物的横向刚度增加，并且在达到全局动态失稳之前，它可以承受更少的变形。六角网格骨架中斜柱的存在有助于将局部非线性集中在环梁而不是外部柱中。