摘要
如何防治反射裂缝是旧水泥混凝土路面沥青加铺层需主要解决的问题之一。文章以广西南宁市某城市道路改扩建工程为例,采用有限元软件ABAQUS建立平面应变模型,分析层间接触状态变化对沥青加铺层应力强度因子的影响,结果表明:各接触层间粘结性能的增强可有效降低裂缝尖端应力强度因子。
How to prevent the reflection cracks is one of major problems required to be solved for the asphalt overlay of old cement concrete pavement.Taking a city road expansion and reconstruction pro- ject in Nanning as the example,this article established the plane strain model by using the ABAQUS fi- nite element software,and analyzed the impact of interlayer contact state changes on the stress intensity factor of asphalt oveday, and the results showed that the enhancement of adhesive properties among all contact layers can effectively reduce the stress intensity factor of crack tips.
出处
《西部交通科技》
2016年第5期10-12,112,共4页
Western China Communications Science & Technology
关键词
沥青加铺层
层间接触
反射裂缝
应力强度因子
Asphalt oveday
Interlayer contacts Reflection crack
Stress intensity factor
