摘要
湿陷性黄土路基的沉降是导致铁路工程建筑物破坏的一个重要原因.灰土挤密桩通过在地基中的挤土效应、灰土之间的物理化学反应,从而提高地基土的承载力和水稳性,桩体和挤密土组成复合地基.通过介绍处理湿陷性黄土的机理和一路基工程具体实例,采用有限元计算方法,探求灰土挤密桩复合地基中应力变形分布特征,得出的一些结论,为实际工程提供参考数据.
The sedimentation of collapsible loess subgrade is a important cause which results to breakage of railway structure. Lime-soil compaction pile improves the carrying capacity and water-stability of foundation soil by the squeezing effect in subgrade and the physical-chemic reaction utilized. The compound foundation is made up of the pile and the compact soil. Through introducing the theory of lime-soil compaction pile in collapsible loess disposal and a actual subgrade project, the characteristics of stress and deformation in lime-soil compaction pile compound foundation are sought by using finite element method, and some of the conclusions which offer the referenced data for practical construction are drawn.
出处
《兰州交通大学学报》
CAS
2004年第3期124-127,共4页
Journal of Lanzhou Jiaotong University
关键词
湿陷性黄土
灰土挤密桩
有限元方法
复合地基
collapsible loess
lime-soil compaction pile
finite element method
compound foundation