Abstract
Intense rainfall induced by climate warming is causing more common extreme meteorological events such as urban waterlogging in recent years. The urban waterlogging often has a wide-ranged severe impact on urban traffic. General intense rainfall weather makes urban transportation frequently be served in an environment with abundant water, which not only affects its operation safety but also challenges the service life of urban asphalt pavement. This paper presents a comprehensive survey on the influence of intense rainfall on urban transportation. The characteristics of meteorological phenomena such as climate warming, intense typhoon and rainfall, and urban waterlogging are firstly discussed. Then, Shenzhen, the city in south China, is chosen to analyze its historical meteorological variation in recent years, which was recently affected by a typhoon name Ewiniar in 2018 and caused severe waterlogging throughout entire city. Further, the operation safety of urban traffic is investigated with an increasing depth of surface runoff in intense rainfall weather, followed by the service life of asphalt pavement related to the moisture damage induced by dynamic pore water pressure. Finally, a series of measures to alleviate the effects of intense rainfall induced by climate warming on urban waterlogging and long service life of asphalt pavement are recommended.
Highlights
Global climate warming is a fact that has been widely recognized and accepted by various countries in the world, while a series of climatic disasters caused by the global climate warming is the reality that human has to face
The study reviewed the characteristics of intense rainfall induced by climate warming and its influence on urban asphalt pavement
The following conclusions can be drawn as below: 1) Global climate warming accompanied by the accelerating water evaporation of land and sea surface in recent years promotes the formation of typhoons
Summary
Global climate warming is a fact that has been widely recognized and accepted by various countries in the world, while a series of climatic disasters caused by the global climate warming is the reality that human has to face. For common intense rainfall weather, the increase in its frequent occurrence and precipitation intensity will affect the operation safety and service life of urban asphalt pavement. The increasing thickness of surface runoff on asphalt pavement induced by intense rainfall undoubtedly causes greater safety risks to driving. The repeated interaction between vehicle tires and asphalt pavement with surface runoff often generates dynamic pore water pressure. The conclusion of the field survey is one of the evidences to show the obvious influence of moisture damage concerning dynamic pore water pressure on service status for asphalt pavement. The frequent occurrence of intense rainfall induced by climate warming aggravates the influence of dynamic pore water pressure on moisture damage, which increases the adverse effect of water on service life of asphalt pavement
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