摘要
为减少季节性冻土地区公路在冻胀作用下产生的破坏,对公路路面抗冻设计方法进行了研究。通过对公路冻深和气象资料相关性的分析,提出了公路按冻结指数和潮湿系数进行二级区划的公路冻区划分;在分析各国已有研究成果的基础上,提出了改进的大地冻深和公路冻深计算公式;根据路面在路基土冻胀作用下的受力状态,提出了路面抗冻破坏的设计方法和计算公式。结果表明:公路冻区的划分明确了公路抗冻设计的目的;改进的公路冻深计算方法和路面抗冻设计方法用于路面抗冻设计更加准确,可有效减少路面冻胀破坏。
In order to reduce the destruction of pavement resulted by frost heaving in seasonal frost region, anti-frost design method was studied. Through the analysis of highway frost depth and coherent meteorological data, the highway frost region division of secondary zoning was put forward according to the freezing index and humidity coefficient. Based on the research results at home and abroad, the modified formulas for calculation of earth frost depth and highway frost depth were also suggested. In addition, according to stress state of pavement subjected to frost action in subgrade soil, the calculation formula and design method for pavement anti-frost damage were brought forward. Results show that highway frost region division makes the aim of the highway anti-frost design clear. The application of the modified method which is used to calculate highway frost depth and anti-frost design method for pavement makes anti-frost design more exact. It can effectively reduce the frost heaving damage in the pavement.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
2009年第5期34-40,共7页
China Journal of Highway and Transport
基金
交通部规范修订项目
关键词
道路工程
季节性冻土
回归分析
路面抗冻设计
二级区划
标准冻深
road engineering
seasonal frozen earth
regression analysis
anti-frost design for pavement
secondary zoning
standard frost depth
作者简介
陈志国（1965-），男，吉林公主岭人，吉林省交通科学研究所研究员，哈尔滨工业大学工学博士研究生，E-mail：jcczg@vip．sina．com。
