Formulation of human-structure interaction system models for vertical vibration
Formulation of human-structure interaction system models for vertical vibration
复制标题
DOI：
10.1016/j.jsv.2016.05.015
复制
发表时间：
2016-09
影响因子：
4.7
通讯作者：
C. Caprani;E. Ahmadi
中科院分区：
文献类型：
--
作者：
C. Caprani;E. Ahmadi
本文考虑竖向振动的人-结构相互作用系统模型。这项工作组装从文献中的各种移动荷载模型，并提出了扩展的单个行人人群的行人的人群-结构相互作用系统的有限元制定。步行行人的垂直力被表示为一般的时间相关的力，和行人反过来建模为移动力，移动质量，和移动弹簧质量阻尼器。任意梁结构建模使用模态坐标或有限元公式。在每种情况下，人-结构交互（HSI）系统首先制定为一个单一的步行行人，然后扩展到考虑人群的行人。最后，单个行人和人群负载的情况下，示例应用程序进行检查。它示出了如何使用模型来量化人群和桥梁结构之间的相互作用。这项工作应用于评估现有和新建的人行桥。
In this paper, human–structure interaction system models for vibration in the vertical direction are considered. This work assembles various moving load models from the literature and proposes extension of the single pedestrian to a crowd of pedestrians for the FE formulation for crowd–structure interaction systems. The walking pedestrian vertical force is represented as a general time-dependent force, and the pedestrian is in turn modelled as moving force, moving mass, and moving spring–mass–damper. The arbitrary beam structure is modelled using either a formulation in modal coordinates or finite elements. In each case, the human–structure interaction (HSI) system is first formulated for a single walking pedestrian and then extended to consider a crowd of pedestrians. Finally, example applications for single pedestrian and crowd loading scenarios are examined. It is shown how the models can be used to quantify the interaction between the crowd and bridge structure. This work should find use for the evaluation of existing and new footbridges.