The investigation and analysis of city road asphalt pavement damage in Hohhot

摘要

With the development of local economy, the increase of urban population and the poor infrastructure in old urban area can't meet the development of the modern city. Small and medium-sized city traffic problems have gradually become the negative factors which hinder and restrict the city social economy development. As viewed from Hohhot, this article mainly aims at the urban road asphalt pavement damage condition, analyses the main damage types and puts forward to the renovation and maintenance programs. The city of Hohhot is located in TuMoChuan Plain which in the central of China's northern Inner Mongolia Autonomous Region, belongs to the seasonal frozen region. With the rapid growth of economy, the urban traffic volumes increase year by year. Most of urban roads have varying degrees of damage under great traffic pressure. Especially the natural gas replacement, water supply, heating and other city infrastructure construction projects are relatively concentrated lead to the traffic volumes increase abruptly. Besides of the unique climate of Hohhot that cold in winter and warm in spring, the urban roads easily appear the frost boiling of subgrade, pavement cracks, loose, deformation and other different types of damages[2]. The urban road diseases not only increase the operation time and cost, but also require the traffic department puts out a lot of money to maintenance every year. Therefore, for the city road diseases, carrying on the investigation into the cause of the disease breakage, researching, proposing the practical and feasible renovation and maintenance programs to improve the road quality, prolong road service life, truly achieve the idea that "giving priority to prevention, combining prevention with treat", appear particularly important[3].