摘要
以某人车共用的双层钢桁架梁桥为研究对象,运用ANSYS软件建立桥梁-人体有限元分析模型。基于车辆荷载引起的行人振动加速度响应,采用均方根加速度、烦恼率和频域分析等3种人体舒适性评价方法对行人舒适性进行评价,分析车速、车重和行车间距等因素对行人舒适性的影响。计算结果表明:3种行人舒适性评价方法的评价标准虽不同,但能得出一致的评价结论;在车速为45 km/h时,人体会感到由车辆荷载引起桥梁振动所带来的不舒适感;人体舒适性随车重的增加而降低,当车重超过10 t时,人体会出现较为明显的不舒适性;增大行车间距对人体舒适性的影响较小,但可能使行人产生不良的生理反应。
Taking a double-layer steel truss girder bridge shared by someone's car as the research object,the bridge-lhuman finite element analysis model is established by using ANSYS software.Based on the response of pedestrian vibration acceleration caused by vehicle load,three human comfort evaluation methods were used to evaluate pedestrian comfort,including root mean square acceleration,annoyance rate and frequency domain analysis,and the influence of factors such as speed,vehicle weight and distance between vehicles on pedestrian comfort was analyzed.The calculation results show that the three kinds of pedestrian comfort evaluation method and evaluation standard are different,but it can consistent evaluation conclusion;When the vehicle speed is 45 km/h,the human body will feel the discomfort caused by the bridge vibration caused by the vehicle load;human body comfort decreases monotonously with the increase of vehicle weight.When the vehicle weight exceeds 10 t,the human body will have obvious discomfort;Increasing the distance between vehicles has little influence on the comfort of human body,but it may cause adverse physiological reactions of pedestrians.
作者
陈代海
周帅
李整
许世展
房益林
CHEN Daihai;ZHOU Shuai;LI Zheng;XU Shizhan;FANG Yilin(School of Civil Engineering, Zhengzhou University, Zhengzhou,Henan 450001, China;Henan Expressway Development Corporation Ltd., Zhengzhou,Henan 450052, China)
出处
《公路工程》
2022年第2期7-13,共7页
Highway Engineering
基金
国家自然科学基金项目(51408557)
中国博士后科学基金项目(2013M541995)
河南省交通运输科技计划项目(2020J-2-6)。
关键词
人车共用桥梁
行人舒适性评价
车速
车重
行车间距
bridges shared by people and vehicles
evaluation of pedestrian comfort
vehicle speed
vehicle weight
distance headway
作者简介
陈代海(1982—),男,湖南邵阳人,副教授,博士,主要从事车桥耦合振动研究工作。
