高速客运专线路基改良填料的试验研究

Experimental Study on Improved Loess for Subgrade of High-speed Dedicated Passenger Special Lines

基于高速客运专线对路基变形的严格要求,路基填料改良已成为高速铁路必须解决的问题。本文通过大量的土工试验和理论分析,研究了石灰改良黄土和水泥改良黄土的强度机理、压缩特性、水稳定性、强度特性以及影响这两种改良材料工程力学特性的主要因素,并进行了对比分析,为黄土地区高速客运专线路基填料的选择和应用,提供了参考依据。

Improving roadbed filling has become a critical problem to be solved in respect of high-speed railways since high-speed dedicated passenger lines have strict requirements to roadbed deformation. Through a large number of soil tests and theoretical analyses, the intensity mechanism, compactness, water-resistance and strength of improved-loess and major factors influencing their engineering mechanical properties are studied and compared. This gives reference to choice and application of roadbed filling for high-speed dedicated passenger lines in the loess region.