保温材料在硫酸盐渍土路基中的应用

Application Research on Temperature of Sulfate Saline Soil Subgrade

聚苯乙烯泡沫板(EPS板)在国内外多年冻土区工程中的应用较为广泛,但对于在盐渍土中使用保温材料应用研究相对还比较少。为了研究随外界环境条件改变聚苯乙烯(EPS)盐渍土路基温度场变化特征,在新疆地区农二师21团-24团公路路段长期监测数据的基础上,运用ABAQUS有限元分析方法,对盐渍土EPS隔热路基的温度场进行数值模拟。通过对比分析,验证了模拟结果的准确性,研究了在硫酸盐渍土中EPS的保温效果;提出了保温板铺设的最佳位置及适宜厚度;总结分析了保温板铺设位置及厚度与路基填土高度的关系。

Expanded Polystyrene （EPS） boards has been widely applied in permafrost regions both at home and abroad , but the application research of thermal insulation materials applied in saline soil was relatively less. In or der to research the changes of subgrade temperature field with alterable environmental conditions, based on the longterm monitoring data of agricultural second division 21- 24 group road section in the Xinjiang, the method of finite element analysis was conducted by ABAQUS software to simulate thermal state of the roadbed with insulations in saline soil region . Through the comparison and analysis, the accuracy of the simulation result is verified , the insulation effect in sulfate saline soil of EPS is studied , the best position and thickness for insulation boards is pres ented and the relationship between the thickness and position of insulation and the height of embankment is ana lyzed .