基于人体适应性的悬浮隧道抑振指标限值研究

Research on the Limits of Vibration Suppression Index forSuspension Tunnels Based on Human Adaptability

为了能有效抑制波流耦合作用下悬浮隧道振动对人体适应性的影响,提出一种基于人体适应性的悬浮隧道振动指标限值获取方法。综合不同振动特性下人体适应性评估的经验、标准以及研究,提出悬浮隧道下人体适应性的加速度限值;同时通过数值仿真模拟悬浮隧道与人体振动特性,分析悬浮隧道振动条件下人体各部位受到加速度,并以人体加速度极限标准为基础,对悬浮隧道振动指标进行解析,提出抑振指标限值。结果表明:悬浮隧道下人体适应性的加速度为0.2 m/s^(2);人体仿真中腹部所受加速度最大,根据人体适应下的最大加速度,制定悬浮隧道不同振动频率与振幅人体适应性限值表,提出在保障人体适应基础上悬浮隧道允许的最大振动与振幅。该结果可为后续悬浮隧道实例工程抑振指标取值提供数据参考,保障悬浮隧道人员通行的适应性。

In order to effectively suppress the impact of suspension tunnel vibration on human adaptability under wave current coupling,this paper proposes a method for obtaining vibration index limits of suspension tunnels based on human adaptability.Based on the experience,standards,and research of evaluating human adaptability under different vibration characteristics,acceleration limits for human adaptability under suspended tunnels are proposed.At the same time,numerical simulation is used to simulate the vibration characteristics of the suspended tunnel and the human body,analyze the acceleration of various parts of the human body under the vibration conditions of the suspended tunnel,and analyze the vibration indicators of the suspended tunnel and propose the limit values of the vibration suppression indicators based on the human body acceleration limit standard,.The results show that the acceleration of human adaptability under the suspended tunnel is 0.2 m/s^(2).In human simulation,the abdomen experiences the maximum acceleration.Based on the maximum acceleration under human adaptation,a table of human adaptation limits for different vibration frequencies and amplitudes of the suspension tunnel is formulated,and the maximum vibration and amplitude allowed for the suspension tunnel are proposed on the basis of ensuring human adaptation.The results can provide data reference for the vibration suppression index values of subsequent suspension tunnel engineering examples,ensuring the adaptability of personnel passing through the suspension tunnel.