摘要
半刚性基层沥青混凝土路面反射裂缝和水损坏问题加剧了南疆阿拉尔市道路盐胀-冻胀变形,严重影响了路面使用性能。针对道路破坏情况,阿拉尔市道路改建工程采用了级配碎石柔性基层,将道路两侧路缘石及中间带均改为高挡水墙。通过数值模拟分析对比可知,改建道路结构及设施在水影响和车辆荷载的作用下的应力场值、位移场变化均小于旧路结构。
Reflection cracks and water diseases which are caused by semi-rigid surface aggravate the deformation of salt - frost damage in the south of Xinjiang, and seriously affect the performance of pavement. According to the road damage conditions in Alar, graded aggregate base is adopted in urban road reconstruction project, and higher water-retaining wall in place of curb and median divider. Through numerical simulation and analysis, the study found that the changes of structure after reconstruction on stress field, displacement under water and vehicle loading are less than the old road.
出处
《公路》
北大核心
2014年第7期84-89,共6页
Highway
基金
国家自然科学基金项目
项目编号51168042
关键词
改建道路结构
力学特征
数值模拟
structure of road reconstruction
mechanical characteristics
numerical simulation
