摘要
针对高速公路路基差异沉降等问题,从软土路基本身物理力学指标差异考虑,借助有限元软件进行模拟计算沉降,通过控制变量法分析软土路基各物理力学指标对差异沉降的影响.得出的结论为:土体本身重度和黏聚力差异对路基差异沉降的影响不大,压缩模量和内摩擦角的不同对路基差异沉降影响较大.同时进一步证明对路基预压能有效地减小差异沉降.
Aiming at the problem of highway embankment settlement difference, considering the differences in basic body physical and mechanical indexes of soft soil of the road, with the help of finite element software to simulate the settlement calculation, by controlling variables influence of the physical and mechanical indexes of soft soil subgrade on the differential settlement is analyzed. The conclusions are as follows： the difference of soil gravity and cohesive force has little influence on differential settlement of subgrade; the difference of compression modulus and internal friction angle has great influence on differential settlement of s e. At the same time, it is further proved that the preloading can effectively reduce the differential settlement.
出处
《河南科学》
2017年第11期1813-1818,共6页
Henan Science
基金
国家自然科学基金青年基金(51609071)
江苏省自然科学基金青年基金(BK20140848)
广东省交通运输厅科技项目(科技-2015-02-013)
江苏省2015年度普通高校研究生科研创新计划项目(KYZZ15_0146)
关键词
软土地基
力学指标
数值分析
差异沉降
soft soil foundation
mechanical index
numerical analysis
differential settlement
