摘要
为了扩大高速铁路路基基床底层填料的使用范围,进行了水泥改良土的动三轴试验,分析了水泥改良土在列车重复荷载作用下的动力特性,研究了水泥改良土的临界动应力、累计塑性变形、弹性变形和回弹模量的变化规律及影响因素,论证了水泥改良土作为高速铁路路基基床底层填料的可行性。
In order to enlarge the usage extent of base materials of rapid transit railway foundation, the dynamic triaxial test is made on cement-improved soil. The dynamic performance of cement- improved soil under repeated load of train is analyzed. The variation and influence factors of critical dynamic stress, accumulated plastic deformation, elastic deformation and resilient module of cement-improved soil are studied. It can be concluded that the dynamic performance of cement-improved soil meets the design demand of rapid transit railway subgrade.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2003年第7期1156-1160,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
中国铁道建筑总公司资助项目(G99-2-1A)
关键词
土力学
高速铁路
填料
动三轴试验
荷载
回弹模量
弹性变形
soil mechanics, cement-improved soil, high-speed railway, subgrade, dynamic performance
