加筋人工冻结路面力学性能试验研究

Experimental Research on Mechanical Property of Reinforced Artificial Freezing Pavement

摘要: 目前在工程建设中，人工冻结法被用于临时土体强度加固，使土层在冻结期间强度大大提高，满足工程需求，融化后可恢复原状，降低对环境的污染和破坏。为探索在环保要求较高的地区人工冻结法在输电线路施工便道中的应用，开展了人工注水冻结路基力学性能试验，在人工冻结体中添加不同类型的加筋体，进行了不同加筋体对人工冻结体承载性能的对比。试验结果表明：人工注水冻结路面厚度越大，在相同荷载作用下，冻结路面和路基的整体位移越小；不同加筋体对冻结路基承载性能的影响不同，双向土工格栅对于人工冻结路基承载性能的提高最为有利。

Abstract: At present, artificial freezing method is used for temporary soil strength reinforcement in construction which greatly increases the strength of the soil during freezing to meet the engineering needs. Melting can be restored to its original state to reduce pollution and damage to the environment. In order to explore the application of artificial freezing method in transmission line construction for construction access road in areas with high environmental protection requirements, the mechanical performance tests of artificial water injection frozen subgrade are carried out. Adding different reinforcement material of stiffeners to the artificial frozen body, the bearing capacity of artificial frozen body is compared with different reinforcement materials. The test results show that: under the same load, the greater the thickness of frozen pavement by artificial water injection, the smaller the overall displacement of frozen pavement and subgrade. Different reinforcement materials have different effects on the load-bearing performance of frozen roadbeds. The two-way geotechnical grille is the most favorable to improve the bearing capacity of artificially frozen subgrade.