摘要
无砟轨道铁路对线路的平顺性、稳定性和耐久性提出了严格要求,当其以路基形式修建在陡坡段时,需要选择合理的加固结构形式来解决路基填筑体的不均匀沉降、地基土的不均匀沉降及加固结构水平变形过大等难题。应用创新思维和创新方法来进行问题分析,可以有效克服思维定势,从而可以确保加固结构方案的选择更加具有系统性和科学性。应用创新方法进行问题分析,得出以下结论:(1)无砟轨道铁路陡坡路基存在问题的实质是出现过大的横向差异沉降;(2)陡坡路基出现过大横向差异沉降的冲突区域为陡坡填筑体;(3)板椅式桩板结构是目前技术条件下解决无砟轨道铁路陡坡路基不均匀沉降较好的加固结构形式。
Ballastless track railway has very strict demand for comfort, stability and durability. When it is constructed on steep slope section as subgrade, rational reinforcing structure should be selected to resolve the problems such as uneven settlement of subgrade fillings and foundation soil as well as excessive horizontal deformation of reinforcing struc- ture. Innovative thinking and approach can be used to overcome the mind-set, thereby to ensure more systematic and scientific selection of the scheme of reinforcing structure. By adopting innovative approach, the following conclusions are obtained ： excessive lateral differential settlement is the core issue for steep slope subgrade of ballastless track railway ; its conflict area is steep slope fillings; chair-shaped pile board structure is a better reinforcing structure for the steep slope subgrade of ballastless track railway under the present technical conditions.
出处
《高速铁路技术》
2015年第4期31-35,共5页
High Speed Railway Technology
关键词
创新方法
无砟轨道
陡坡路基
差异沉降
innovative approach
ballastless track
steep slope subgrade
differential settlement
