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考虑自行车骑行者PM2.5吸入量的健康骑行速度识别方法

刘子逸 张传栋 朱才华 李昱燃 李岩

刘子逸, 张传栋, 朱才华, 李昱燃, 李岩. 考虑自行车骑行者PM2.5吸入量的健康骑行速度识别方法[J]. 交通信息与安全, 2024, 42(1): 124-130. doi: 10.3963/j.jssn.1674-4861.2024.01.014
引用本文: 刘子逸, 张传栋, 朱才华, 李昱燃, 李岩. 考虑自行车骑行者PM2.5吸入量的健康骑行速度识别方法[J]. 交通信息与安全, 2024, 42(1): 124-130. doi: 10.3963/j.jssn.1674-4861.2024.01.014
LIU Ziyi, ZHANG Chuandong, ZHU Caihua, LI Yuran, LI Yan. Determination of Healthy Cycling Speed Considering Individual PM2.5 Inhalation[J]. Journal of Transport Information and Safety, 2024, 42(1): 124-130. doi: 10.3963/j.jssn.1674-4861.2024.01.014
Citation: LIU Ziyi, ZHANG Chuandong, ZHU Caihua, LI Yuran, LI Yan. Determination of Healthy Cycling Speed Considering Individual PM2.5 Inhalation[J]. Journal of Transport Information and Safety, 2024, 42(1): 124-130. doi: 10.3963/j.jssn.1674-4861.2024.01.014

考虑自行车骑行者PM2.5吸入量的健康骑行速度识别方法

doi: 10.3963/j.jssn.1674-4861.2024.01.014
基金项目: 

国家自然科学基金项目 51408049

陕西省自然科学基础研究计划项目 2020JM-237

详细信息
    作者简介:

    刘子逸(1999—),硕士研究生. 研究方向:交通出行健康. E-mail: liuziyi@chd.edu.cn

    通讯作者:

    李岩(1983—),博士,教授. 研究方向:交通安全、交通控制等. E-mail: lyan@chd.edu.cn

  • 中图分类号: U491

Determination of Healthy Cycling Speed Considering Individual PM2.5 Inhalation

  • 摘要: 为降低空气污染时自行车骑行者的PM2.5吸入量,提升健康水平,其可采用减小行程暴露时间或呼吸速率2种方式。2种方式对骑行速度的要求相反,且PM2.5等污染物的吸入量因人而异,所以亟需建立考虑个体差异的PM2.5吸入量-骑行速度模型,以识别骑行者在PM2.5吸入量最小时的健康骑行速度。能量消耗模型以心率和个体特征指标为变量计算空气吸入量,并可结合PM2.5暴露质量浓度和骑行时间进而计算骑行者出行过程的PM2.5吸入量。根据个体骑行者的速度与心率的关联特征构建PM2.5吸入量-骑行速度模型,并通过求导方法获得健康骑行速度。对西安市173名被试试验结果的分析表明:健康骑行速度下男性、女性的PM2.5吸入量与最小和最大骑行速度下的PM2.5吸入量相比,降低比例分别为17.06%、8.57%和1.85%、2.50%。PM2.5吸入量和骑行速度之间呈“U”形曲线分布,“U”形曲线最低点对应于PM2.5吸入量最小时的健康骑行速度。男性健康骑行速度与年龄、体重和基础心率各变量间的相关关系均呈正相关,而女性健康骑行速度与年龄、体重和基础心率各变量间的相关关系分别呈正相关、负相关和正相关。健康骑行速度分布结果可为骑行者针对个体差异性特征提供参考,并建立污染天气下骑行者PM2.5吸入量减少的交通管控方法,提升居民在骑行过程中的健康水平。

     

  • 图  1  研究框架

    Figure  1.  Research framework

    图  2  被试个体特征分布

    Figure  2.  Distribution of individual characteristics of subjects

    图  3  试验路径示意图

    Figure  3.  Diagram of the experimental path

    图  4  数据选取

    Figure  4.  Data selection

    图  5  骑行速度与心率变化率拟合

    Figure  5.  Regression of cycling speed to variation rate of heart rate

    图  6  PM2.5吸入量趋势图

    Figure  6.  Trend of the PM2.5 inhalation

    图  7  健康骑行速度分布

    Figure  7.  Distributions of the healthy cycling speed

    表  1  骑行速度与心率

    Table  1.   Cycling speed and heart rate

    统计指标 男性 女性
    骑行速度/(km/h) 心率/(beat/min) 骑行速度/(km/h) 心率/(beat/min)
    均值 13.48 114.63 11.37 119.75
    标准差均值 3.03 11.95 5.38 13.95
    最大值 17.89 143.00 16.23 157.00
    最小值 7.32 70.00 6.87 75.00
    下载: 导出CSV

    表  2  有/无机非分隔带的非机动车道PM2.5暴露水平

    Table  2.   PM2.5 exposure level of non-motorized lanes w/wo physical separation  单位: μg/m3

    统计指标 支路 次干路 主干路
    路段 交叉口 路段 交叉口 路段 交叉口
    有机非分隔带 无机非分隔带 有机非分隔带 无机非分隔带 有机非分隔带 无机非分隔带 有机非分隔带 无机非分隔带
    均值 77.18 81.32 78.21 86.17 82.79 87.57 88.39 93.32 97.14 99.19
    标准差 18.98 20.72 19.20 19.98 22.03 21.81 20.56 18.63 21.77 24.10
    最大值 119.00 126.00 116.00 119.00 125.00 132.00 134.00 133.00 138.00 134.00
    最小值 43.00 42.00 42.00 51.00 42.00 47.00 51.00 60.00 59.00 50.00
    下载: 导出CSV
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  • 收稿日期:  2023-06-12
  • 网络出版日期:  2024-05-31

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