[1] Chen Xiaobing, Wang Juntian, Liu Han, Xu Libin, et al. Influence of rainfall on skid resistance performanceand driving safety conditions of asphalt pavements [J]. Journal of Southeast University (English Edition), 2019, 35 (4): 482-490. [doi:10.3969/j.issn.1003-7985.2019.04.011]

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Influence of rainfall on skid resistance performanceand driving safety conditions of asphalt pavements()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

35

Issue:

2019 4

Page:

482-490

Research Field:

Traffic and Transportation Engineering

Publishing date:

2019-12-30

Info

Title:

Influence of rainfall on skid resistance performanceand driving safety conditions of asphalt pavements

Author(s):

Chen Xiaobing;  Wang Juntian;  Liu Han;  Xu Libin;  Zhao Ronglong

School of Transportation, Southeast University, Nanjing 210096, China

Keywords:

rainfall intensity;  pavement transverse and longitudinal slopes;  skid resistance;  driving safety;  water film thickness(WFT);  British pendulum number(BPN);  stopping sight distance(SSD)

PACS:

U416.217

DOI:

10.3969/j.issn.1003-7985.2019.04.011

Abstract:

To study the influence of rainfall on pavement skid-resistance performance and driving safety, the water film thickness(WFT)concept considering the longitudinal and transverse slopes of the pavement was utilized based on the total discharge formulation and turbulence theory of slope flow. Using experimental data measured using the British pendulum test under varying WFT levels, a model for calculating the skid resistance, namely the British pendulum number(BPN), was formulated and used to quantitatively evaluate the effects of rainfall intensity, transverse, and longitudinal slopes on the computed BPN. The study results reveal that skid resistance is linearly proportional to the pavement transverse slope and inversely proportional to the rainfall intensity and the pavement longitudinal slope. In particular, rainfall intensity, along with pavement texture depth, exhibited a significant impact on the tire-pavement friction and skid-resistance performance. The results further indicate that driving safety under wet weather is predominantly governed by skid resistance and visibility. The BPN and sideway force coefficient(SFC₆₀)values for new asphalt pavements under different rainfall intensities are provided along with some modification to the stopping sight distance(SSD)criteria. Safe driving speed limits are also determined using a safe-driving model to develop the appropriate speed limit strategies. The overall study results provide some insights, methodology approach, and reference data for the evaluation of pavement skid-resistance performance and driving safety conditions under different pavement slopes and rainfall intensities.

References:

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Memo

Memo:

Biography: Chen Xiaobing(1973—), male, doctor, associate professor, xbchen@seu.edu.cn.
Foundation item: The National Natural Science Foundation of China(No.51478114).
Citation: Chen Xiaobing, Wang Juntian, Liu Han, et al. Influence of rainfall on skid resistance performance and driving safety conditions of asphalt pavements[J].Journal of Southeast University(English Edition), 2019, 35(4):482-490.DOI:10.3969/j.issn.1003-7985.2019.04.011.

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