摘要
混凝土桥面沥青铺装层在使用期间产生的疲劳开裂是世界各地桥面铺装常见的问题，该文依托内蒙古教来河大桥采用有限元分析软件ANSYS对于高寒地区混凝土桥面沥青铺装层的疲劳开裂性能进行分析研究。分析提出高寒地区混凝土桥面沥青铺装层深度0～2cm区域可作为铺装层内部常温拉应力的峰值分布区域；铺装层内的常温拉应力均随着上面层／下面层厚度的增加而减小；通过增加高寒地区混凝土桥面沥青铺装层的厚度来改善桥面铺装层的抗疲劳性能。
It is a common problem that the fatigue cracking of asphalt pavements of all concrete bridge grows in service life. In tiffs paper, the fatigue cracking resistance of asphalt pavement was analyzed in cold region by ANSYS on basis of Jiaolai River from Innner Mongolia. The result indicates that the zone between 0 and 2 cm thickness of asphalt pavement can be the peak tensile stress in normal temperature; thicker the super or bottom asphalt is, less the tensile stress of asphalt pavement in normal temperature is; it can improve the fatigue cracking resistance of bridge pavement to increase the thickness of asphalt pavement in cold region.
出处
《国外建材科技》
2008年第4期66-69,共4页
Science and Technology of Overseas Building Materials
关键词
桥面铺装
疲劳开裂
有限元
拉应力
bridge deck pavement
fatigue cracking
finite element
tensile stress
