拓宽路基差异沉降有限元分析及控制技术研究

摘要

针对高速公路的扩建加宽中由于旧路路基已沉降多年基本趋于稳定，而新建路基沉降时间较短，新老路基结合部位常会产生差异沉降的现象，利用有限元方法进行了模拟分析，并在此基础上，从设计上提出了对差异沉降的控制措施，为公路拓宽的设计提供借鉴。%Widening the highway due to the old road embankment settlement for many years has been basically stable,and the new road embank-ment settlement time is short,old roadbed junction will produce uneven settlement,this process was researched using the finite element method, and based on this,from the design of the proposed control measures for the settlement of differences,to provide reference for the design of the road widening.