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中国一般采用路基静态回弹模量作为道路结构设计的参数,然而由于车辆荷载作用下的路基为动态力学响应,因此采用静态回弹模量并不符合路基的实际运营状态。由于中国试验条件的限制,大规模地进行路基动态回弹模量测试并不可行。因此建立路基动静态回弹模量之间的关系具有十分重要的意义。该文以山西省为例,通过理论分析和室内外试验建立了山西省路基动静态回弹模量之间的相关关系,结果表明:不论室内还是现场环境下,动静态回弹模量均有较好的幂函数相关关系。
In China, the static rebound modulus of subgrade is used as the parameter of road structure design. However, because the subgrade under vehicle load is dynamic mechanical response, the static resilience modulus does not meet the actual operation status of subgrade. Due to the limitation of the test conditions in China, it is not feasible to carry out the dynamic modulus of elasticity test of subgrade on a large scale. Therefore, it is very important to establish the relationship between dynamic and static moduli of subgrade. Taking Shanxi Province as an example, the paper establishes the correlation between dynamic and static moduli of rebar in Shanxi Province through theoretical analysis and laboratory tests. The results show that the dynamic and static resilience modulus of Shanxi Province is higher Good power function correlation.