高速铁路路基改良填料的试验研究

Experimental study on improved soil for high-speed railway subgrade

改良土问题是高速铁路路基的重要内容。通过室内试验 ,进行了水泥土、石灰土、石灰粉煤灰土的物理力学特性研究 ,给出了满足高速铁路要求的各改良土的最佳配合比。动三轴试验的结果表明该设计值是正确的。

The problem of improved soil is important for hig h-speed railway subgrade. The physico-mechanical properties of cement-improve d soil, lime-improved soil, and lime-flyash-improved soil are studied in laboratoy test. The optimum mix ratio of improved soil is put forward for high-speed ra ilway subgrade in this paper. The result is confirmed by dynastic triaxial test.