华南理工大学学报(自然科学版) ›› 2005, Vol. 33 ›› Issue (10): 62-66.

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三跨与单跨护栏系统的抗冲击性能比较

黄小清 张秀丽 汤立群   

  1. 华南理工大学 交通学院,广东 广州 510640
  • 收稿日期:2004-11-02 出版日期:2005-10-25 发布日期:2005-10-25
  • 通信作者: 黄小清(1945-),女,教授,博士生导师,主要从事路桥力学、复合材料力学方面的研究 E-mail:emqhuang@ scut.edu.cn
  • 作者简介:黄小清(1945-),女,教授,博士生导师,主要从事路桥力学、复合材料力学方面的研究
  • 基金资助:

    广东省自然科学基金资助项目(980577,011602);广东省交通厅资助项目(粤高路技[2000 3207号)

Comparison of Impact-Counteracting Capability Between Three·-Span and Single·-Span Guardrail Systems

Huang Xiao-qing  Zhang Xiu-li Tang Li-qun   

  1. College of Traffic and Communications,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China
  • Received:2004-11-02 Online:2005-10-25 Published:2005-10-25
  • Contact: 黄小清(1945-),女,教授,博士生导师,主要从事路桥力学、复合材料力学方面的研究 E-mail:emqhuang@ scut.edu.cn
  • About author:黄小清(1945-),女,教授,博士生导师,主要从事路桥力学、复合材料力学方面的研究
  • Supported by:

    广东省自然科学基金资助项目(980577,011602);广东省交通厅资助项目(粤高路技[2000 3207号)

摘要: 为了解波形梁护栏系统的冲击响应及各跨之间的相互作用对护栏系统变形和受力的影响,设计和实施了半刚性三跨缩比护栏系统冲击试验,各试件尺寸与实际尺寸的缩比比例为1:3.75.对三跨护栏系统与单跨护栏系统的变形、冲击力、速度、能量吸收等特性进行了比较,计算各部件对护栏系统能量吸收的贡献.结果表明:三跨护栏系统吸收了较多的能量,整体的能量吸收更加均匀、合理、试验方法和所得结论为进一步开展工程护栏的优化设计奠定了基础.

关键词: 三跨护栏系统, 波形梁护栏, 抗冲击性能, 能量吸收

Abstract:

In order to investigate the impact response of W-beam guardrail system and the influence of the interac-tion among the spans on the deformation and the impacting force,the impact experiment of the semirigid three-span scaled-down guardrail system was designed and executed,with a scaled-down ratio of the specimen size to the ac-tual size of 1:3.75.A comparison between the three-span and single-span guardrail systems was then ca~ied out in such aspects as the deform ation,the impacting force,the velocity and the energy absorption,etc.The contributions of each part of the guardrail system to the energy absorption were finally calculated.The results indicate that the three-span guardrail system absorbs more energy with greater uniformity and rationality than the single-span guard-rail system does.The proposed testing method and the corresponding conclusion lay a foundation for the optimiza-tion of gu ardrails in engineering.

Key words: three-span gu ardrail system, W-beam gu ardrail, impact-counteracting capability, energy absorption