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遮阳板护坡工程措施作为调控冻土路基稳定的工程措施已被进行应用研究,实测监测数据表明:遮阳板工程措施能大大减少板体下路基体吸热,显著抬升冻土人为上限,降低上限附近土体温度,调控路基阴阳面吸热不均的差异,使路基温度场向有利于冻土稳定的趋势发展,其应用效果显著;但是现有结构形式温缩变形等损坏较严重,耐久性不理想,其结构形式有待改进。在实地调查研究的基础上,针对试验工程出现的结构问题,对遮阳板护坡工程措施的结构形式进行了优化探讨,并给出了相应的结构设计建议。
The engineering measures of sunshade slope protection have been applied and researched as engineering measures to control the stability of subgrade of frozen soil. The monitoring data show that the sunshade engineering measures can greatly reduce the heat absorption of the subgrade body, significantly raise the artificial upper limit of the permafrost and lower the upper limit Soil temperature and unevenness of heat absorption in the yin and yang of the embankment are controlled so that the temperature field in the embankment tends to be favorable to the stability of the frozen soil and the application effect is remarkable. However, the existing structural forms such as temperature shrinkage deformation are more serious and the durability is not Ideal, its structure needs to be improved. On the basis of the field investigation and study, in view of the structural problems appearing in the experimental project, the structural forms of the sun protection engineering measures are optimized and the corresponding structural design recommendations are given.