In-situ experiment investigations of hydrothermal process of highway in deep seasonal frozen soil regions of Inner Mongolia, China

作     者：ZHANG Hong-wei WANG Xue-ying ZHAO Xin LIU Peng-fei 张洪伟;王学营;赵鑫;刘鹏飞

作者机构：Key Laboratory of Transport Industry of ManagementControl and Cycle Repair Technology for Traffic Network Facilities in Ecological Security Barrier AreaHohhot 010051China Inner Mongolia Transport Construction Engineering Quality Supervision BureauHohhot 010051China Institute of Highway EngineeringRWTH Aachen UniversityAachen 52074Germany 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2020年第27卷第7期

页      面：2082-2093页

核心收录：

学科分类：081401[工学-岩土工程] 08[工学] 0814[工学-土木工程] 

基　　金：Project(2018-MSI-018) supported by the Key Science and Technology Project of the Ministry of Transport of China Project(NJ-2018-28) supported by the Construction Science and Technology of the Department of Transport of Inner Mongolia Autonomous Region of China Project(2019MS05029) supported by the Natural Science Fund Project of Inner Mongolia Autonomous Region of China Project(2020MS05077) supported by the Natural Science Fund Project of Inner Mongolia Autonomous Region of China Project(NJ-2020-05) supported by the Research on Complete Survey Technology of Highway Road Area in High-latitude Permafrost Region, China 

主　　题：subgrade engineering hydrothermal process field observation seasonal frozen soil regions freezing-thawing disease 

摘      要：To reveal the influencing factors and changing rules for the hydrothermal interaction process of highway subgrade, the field measurements of Shiwei-Labudalin Highway in Inner Mongolia, China was conducted for 3 years, based on which the freezing-thawing rules and water content changing characteristics were analyzed. The main results show the subgrade presents a frequent freezing-thawing alternation, and the water content of subgrade exhibits an obvious seasonal alternation. The subbase has the maximum water content, while the base has the minimum water content. The change of water flux is concentrated in the thawing period and consistent with the change of temperature gradient. The subbase layer has the most active water flux due to the heat absorption and impermeability of pavement that easily causes the water accumulation in this layer. Therefore, the prevention and treatment for the freezing-thawing disease should be started from heat insulation and water resistance.