路面典型局部变形激励下的振动舒适性评价

郭雄峰; 陈长; 冯奇

doi:10.3969/j.issn.0258-2724.20200041

路面典型局部变形激励下的振动舒适性评价

doi: 10.3969/j.issn.0258-2724.20200041

郭雄峰^1,,
陈长^2, ,,
冯奇¹

1.
上海市城市建设设计研究总院（集团）有限公司, 上海 200125
2.
同济大学道路与交通工程教育部重点实验室, 上海 201804

基金项目: 国家自然科学基金（71471134）

详细信息

作者简介:
郭雄峰(1992—)，男，工程师，硕士，研究方向为路面养护与管理，E-mail：tjrommel@163.com

通讯作者:
陈长(1977—)，男，副教授，博士，研究方向为交通基础设施养护与管理，E-mail：gxf@tongji.edu.cn

中图分类号: U418
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- 文章访问数: 214
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- PDF下载量: 10
- 被引次数: 0
出版历程
- 收稿日期: 2020-02-15
- 修回日期: 2020-07-28
- 刊出日期: 2020-08-24

Vibration Serviceability Evaluation Under Typical Local Deformations of Pavement

GUO Xiongfeng^1
,,
CHEN Zhang^{2
, ,},
FENG Qi¹

1.
Shanghai Urban Construction Design & Research Institute (Group) Co., Ltd., Shanghai 200125, China
2.
Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 201804, China

摘要

摘要:
为研究沥青路面局部变形对行驶质量的影响，对路面养护管理中常见的错台型、双断面型和曲面型3类局部变形激励下的振动舒适性进行了评价. 首先，建立了局部变形的纵断面简化模型，并基于1/4车理论推导出路面局部变形激励下的人体竖向加速度时域表达式；其次，设计频率加权滤波器对竖向加速度进行滤波，得到瞬时频率加权加速度，从而求解出不同工况下均方根加速度，实现了振动舒适性的时域加权评价；最后，提出了局部变形的评价标准. 分析结果表明：均方根加速度与局部变形高差呈正比关系；同等变形程度下，双断面型变形的行驶感受最差；当错台型、双断面型及曲面型3类局部变形分别达到4.76、2.78、3.26 cm时，行驶质量均达到极不舒适状态.
- 行驶舒适性评价 /
- 频率加权滤波器 /
- 路面局部变形 /
- 竖向加速度 /
- 高差
Abstract:
To study the influence of local deformation of asphalt pavement on riding quality, the vibration serviceability under three types of local deformation, joint faulting type, double-section type and curved surface type, which are common in pavement maintenance management, was evaluated. Firstly, simplified profile model of local deformations are established, and vertical vibration accelerations of human body with the excitation of local deformations are derived, based on the quarter car model. Then, the vertical accelerations are filtered with designed frequency-weighted filter, and instantaneous frequency-weighted accelerations are hence obtained, root-mean-square accelerations under different working conditions are calculated, and weighted vibration serviceability evaluation in time-domain is achieved. Finally, evaluation criteria of local deformations are proposed. The results show that, root-mean-square acceleration is directly proportional to height difference of local deformation. Under the same deformation degree, the driving experience of double-section deformation is the worst. When local deformation height difference of joint faulting, double-section and curved surface reaches 4.76, 2.78 and 3.26 cm, respectively, riding quality reaches extremely uncomfortable states.
- riding serviceability evaluation /
- frequency-weighted filter /
- local deformation of pavement /
- vertical acceleration /
- height difference

HTML全文

图 1 路面局部变形因素统计

Figure 1. Statistical factors of local deformation in pavement

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图 2 典型路面局部变形纵断面示意

Figure 2. Profile diagrams of typical local deformation

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图 3 1/4车模型

Figure 3. Quarter car model

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图 4 竖向加速度的频率加权曲线

Figure 4. Frequency weighting curves of vertical acceleration

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图 5 竖向加速度频谱

Figure 5. Spectrum of vertical acceleration

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图 6 滤波前后的竖向加速度对比

Figure 6. Vertical acceleration comparison before and after filtering

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图 7 均方根加速度与局部变形高差的关系

Figure 7. Relationship between root-mean-square acceleration and height difference of local deformation

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图 8 变形长度与比例系数的关系

Figure 8. Relationship between length of deformation and evaluation coefficient

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表 1 局部变形高差评价标准

Table 1. Evaluation criteria for height difference of local deformation

均方根加速度/ (m • s⁻²)	振动感受	△g 范围/cm
均方根加速度/ (m • s⁻²)	振动感受	错台型	双断面型	曲面型
< 0.315	没有不舒适	< 0.75	< 0.45	< 0.51
0.315～0.630	有些不舒适	0.75～ 1.50	0.45～ 0.87	0.51～ 1.03
0.500～1.000	比较不舒适	1.19～ 2.38	0.69～ 1.39	0.82～ 1.63
0.800～1.600	不舒适	1.90～ 3.81	1.11～ 2.22	1.31～ 2.61
1.250～2.500	很不舒适	2.97～ 5.95	1.73～ 3.47	2.04～ 4.08
> 2.000	极不舒适	> 4.76	> 2.78	> 3.26

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