摘要
裂缝是沥青混凝土路面的主要缺陷之一。早期裂缝对路面使用性能不会产生明显影响。然而,裂缝的扩展最终会导致沥青路面结构性破坏。引起沥青混凝土路面裂缝的原因错综复杂,不过可以将这些复杂原因引起的裂缝归结为荷载性裂缝和非荷载性裂缝两大类。温度裂缝和反射裂缝是非荷载裂缝的两种主要形式。从非荷载性裂缝的角度出发,详细分析了温度收缩裂缝、温度梯度裂缝和反射裂缝形成的机理,指出温度梯度是引起路面横向裂缝的主要原因,而反射裂缝是半刚性基层裂缝和温度裂缝综合作用的结果。
Crack is one of the mainly disfigurement of asphalt concrete pavement. Early cracks dont obviously effect the using properties of the pavement, but the enlarging will result in the structural damage to asphalt concrete pavement. Although the cause is complex, they can be sum up in two types： load crack and no - load crack. Temperature crack and reflect crack are the mainly types of no - load crack. From the view of the no - load crack, the forming mechanism of temperature contraction cracks, temperature grads crack and reflection cracks are particularly analyzed. Finally, temperature grads are thought to be the mainly cause that result in transverse cracks in the pavement, and reflect cracks are the compositive result of temperature cracks and semi - rigid base course cracks.
出处
《四川建筑科学研究》
北大核心
2006年第3期82-84,共3页
Sichuan Building Science
关键词
道路工程
沥青混凝土路面
温度裂缝
反射裂缝
收缩应力
极限强度
highway engineering
asphalt concrete pavement
temperature crack
reflection crack
contraction stress
limit strength
