摘要
根据路堤地基差异沉降的特性,建立了错台式和渐变式路堤地基差异沉降计算模型。运用有限元计算方法,对路堤地基差异沉降引起的路基面变形规律进行了讨论,并对有限元计算结果的可靠性进行了土工离心模型试验的验证。提出了基于路基面不均匀变形限值的地基差异沉降控制标准。分析表明:地基差异沉降限值受路堤高度、地基差异沉降渐变段长度影响;随着路堤高度的增加或地基差异沉降渐变段长度的加大,地基差异沉降限值均呈增大趋势。
Based on the property of differential settlement of embankment foundation, models of discontinuous and continuous settlement are established. Through finite element model calculation, the discipline of subgrade surface deformation caused by differential settlement of the foundation is studied, and the results of finite element calcula- tion are verified by centrifugal model tests. The limit value of differential settlement of the ground is established. The research results show that the limit value of differential settlement raises as the embankment height or transition length of differential settlement increases.
出处
《长江科学院院报》
CSCD
北大核心
2012年第2期90-94,共5页
Journal of Changjiang River Scientific Research Institute
关键词
路基面不均匀变形
路堤地基差异沉降
控制限值
uneven deformation of subgrade surface
differential settlement of embankment foundation
limit valuecontrolling
