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汽车安全与节能学报

汽车安全与节能学报 ›› 2022, Vol. 13 ›› Issue (1): 95-103.DOI: 10.3969/j.issn.1674-8484.2022.01.009

• 汽车安全 • 上一篇    下一篇

自行车座高对骑车人脊背前倾角和头部损伤的影响

邹铁方1,2(), 吴良伟1,2, 胡林*1,2(), 聂冰冰3, 王方1,2   

  1. 1.长沙理工大学, 汽车与机械工程学院, 长沙 410114, 中国
    2.湖南省工程车辆安全性设计与可靠性技术重点试验室, 长沙 410114, 中国
    3.汽车安全与节能国家重点实验室 ,清华大学, 北京 100084, 中国
  • 收稿日期:2021-07-22 修回日期:2021-10-11 出版日期:2022-03-31 发布日期:2022-04-02
  • 通讯作者: 胡林
  • 作者简介:*胡林,教授。E-mail: hulin@csust.edu.cn。
    邹铁方（1982–）,男（汉族）,湖南,教授。E-mail:tiefang@163.com。
  • 基金资助:
    国家自然科学基金资助项目(51775056);长沙市重点研发计划项目(kq2004066);湖南省教育厅优秀青年项目(19B035)

Influence of bicycle seat height on the back lean forward angle and head injury of cyclists

ZOU Tiefang1,2(), WU Liangwei1,2, HU Lin*1,2(), NIE Bingbing3, WANG Fang1,2   

  1. 1. Changsha University of Science & Technology, School of Automotive and Mechanical Engineering, Changsha 410114, China
    2. Hunan Province Key Laboratory of Safety Design and Reliability Technology for Engineering Vehicle, Changsha 410114, China
    3. State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
  • Received:2021-07-22 Revised:2021-10-11 Online:2022-03-31 Published:2022-04-02
  • Contact: HU Lin

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摘要：

以46组物理试验和98组数字模拟试验,以自行车车型、座高、骑车人体型及汽车车型为变量,研究了自行车座高对骑车人脊背前倾角（背角）和头部损伤的影响。物理试验发现：影响背角的显著因素有自行车车型、座高及骑车人体型。数字模拟试验发现：座高与骑车人头部损伤显著相关,不同汽车车型、自行车车型与骑车人体型组合下的头部损伤随座高变化规律不同,存在头部损伤耐受座高。头部损伤降低的内因是头部与汽车相对碰撞速度的降低。该研究结果可为汽车与自行车仿真试验提供支持,为骑车人头部防护措施提供建议。

关键词: 交通工程, 骑车人安全, 脊背前倾角, 头部损伤, 非线性回归

Abstract:

The influence of bicycle seat height on the cyclist lean forward angle of back (back angle) and cyclist head injury was investigated by using bicycle type, seat height, cyclists’ body size and car type as variables with 46 groups of physical experiments and 98 groups of digital simulation experiments. The physical experiments show that bicycle type, seat height and cyclists’ body size are significant factors in the back angle. The digital simulation experiments show that the seat height is significantly related to cyclist head injury, and the change tendency of cyclist head injury with seat height is different under different combination of car type and cyclists’ body size, with being a tolerance limit seat height of the head injury. The internal cause of the decrease in cyclist head injury under the tolerance seat height is the decrease of the relative collision velocity between the head and the vehicle. These results will provide support simulation experiments for car-bicycle collision and provide recommendations for cyclist head protection measures.

Key words: traffic engineering, cyclist safety, lean forward angle of back, head injury, nonlinear regression

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