摘要
以既建高速公路地质资料为背景,通过通用的有限元程序,对高速公路拓宽工程中新、老路基采用不同处理方法的效果进行了数值模拟。结果表明:新路堤的堆载会引起老路基一定程度上的瞬时变形,新路基采用复合地基法处理能较好地解决不均匀沉降问题,且新路基施工前老路基的固结度对复合地基法的处理效果影响较小。
Based on the geologic data of a existing expressway, for its widening engineering, the improvement effect of new and old road foundations with different improvement methods is simulated numerically by popular FEM program. Result shows that the loading of new embankment will induce the instant deformation of old road to some extent; and the new road foundation with composite foundation method will produce less differential settlement; and the consolidation degree of old road foundation before constructing new one has less effect on the improvement effect of composite foundation method.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2006年第11期2066-2070,共5页
Rock and Soil Mechanics
关键词
高速公路
拓宽
数值分析
软土地基
沉降变形
expressway
widening
numerical analysis
soft soil
settlement and deformation
