竖向人-结构相互作用体系理论模型研究

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (1) : 174-179.

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竖向人-结构相互作用体系理论模型研究

李寿涛1 任珉1 张芝芳1 徐梅玲2

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Theoretical models of a vertical human-structure interaction system

LI Shoutao1, REN Min1, ZHANG Zhifang1, XU Meiling2

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摘要

随着大跨度和柔性建筑结构的广泛应用，考虑到高密度人群对于结构稳定性及安全性的影响，人-结构相互作用体系的研究显得尤为重要。本文将串联和并联的两自由度人体模型分别作用于单自由度结构模型，得到三自由度人-结构相互作用体系模型。考虑人体的高阻尼特性，分析人-结构体系的受迫振动运动方程，通过加速度响应函数分析得到体系的共振频率。将模型结果与现有文献报道的试验数据进行对比，结果表明，通过单纯形法对人体参数进行针对性优化后，文中提出的串联三自由度理论模型可以较为准确地模拟试验结果。

Abstract

With wide application of large span and flexible structures, it is important to consider the effect of high density population on structural stability and safety, thus studying the interaction between human body and structure becomes critical.Here, the theoretical model of a 3-DOF human-structure interaction system was constructed with a 2-DOF human body model and a single-DOF mass-spring-damper structure model.The forced vibration of the 3-DOF human-structure interaction system was analyzed considering high damping ratio of human body, and the system’s resonant frequencies were obtained through analyzing its acceleration response function.The numerical simulation results of the system model were compared with the test data published in literatures.The results showed that the 3-DOF human-structure interaction system model proposed here can be used to simulate the test data with a satisfactory accuracy after optimizing parameters of the human body model with the simplex method.

Key words

human-structure system / mass - spring - damping model / resonance frequency / the simplex method / optimization

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李寿涛1 任珉1 张芝芳1 徐梅玲2. 竖向人-结构相互作用体系理论模型研究[J]. 振动与冲击, 2019, 38(1): 174-179

LI Shoutao1, REN Min1, ZHANG Zhifang1, XU Meiling2. Theoretical models of a vertical human-structure interaction system[J]. Journal of Vibration and Shock, 2019, 38(1): 174-179

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