低温下G45通辽至下洼段桥梁桥面铺装开裂探究

Exploration on Bridge Deck Pavement Cracking of G45 Tongliao-Xiaowa Section at Low Temperature

根据G45通辽至下洼段桥梁实地检测和后期汇总的资料,对176座桥梁桥面沥青混凝土铺装层裂缝分类进行统计,并查阅整理工程检测地的气候特点;根据统计结果分布情况,分析阐述了道路桥梁沥青混凝土铺装层裂缝产生的理论,分析各种裂缝产生的原因,得出了横向裂缝占比过高主要是低温造成的结果,指出了低温与裂缝间的因果关系,为以后该种低温情况下桥梁沥青混凝土铺装层养护维修提供参考。

According to the G45 Tongliao to Xiawa section of the bridge detection site measurements and summary of the data,the number of cracks in asphalt concrete pavement of 176 bridge decks was classified,and check the climate characteristics of the project site was examined; according to the distribution of statistical results,it analyzes and explains the theory of crack generation in asphalt pavement of road and bridge,analyzes the causes of various cracks,draw the conclusion that the proportion of transverse cracks is mainly caused by the low temperature. The causal relationship between the low temperature and the cracks is pointed out,which provides a reference for the maintenance and repair of bridge asphalt concrete pavement under such low temperature conditions.