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变形模量Ev2是评价铁路路基压实质量的重要指标。通过试验原理与方法,分析了Ev2试验过程及荷载—沉降量曲线,并结合新建客运专线铁路路基Ev2测试资料,分析Ev2测试指标的分布规律以及对路基压实质量控制的作用,讨论了Ev2值、Ev2/Ev1值控制标准问题,并对Ev2测试的影响因素进行了分析探讨。
Deformation modulus Ev2 is an important index to evaluate the compaction quality of railway subgrade. Through the test principle and method, the Ev2 test process and the load-settlement curve are analyzed. Based on the Ev2 test data of the newly built passenger dedicated railway line, the distribution law of the Ev2 test index and its effect on subgrade compaction quality control are analyzed. The Ev2 value , Ev2 / Ev1 value control standard problems, and Ev2 test factors were analyzed.