摘要
该文在实测数据的基础上,通过有限元热-应力耦合计算,对影响沥青混凝土摊铺所形成的温度梯度的各种参数进行了分析,在此基础上提出了沥青混凝土摊铺所引起的截面上最不利温度梯度的简化模式,可以为沥青混凝土摊铺所引起的截面应力的计算提供参考,最后对防止沥青混凝土高温摊铺引起裂缝的措施提出了一些建议。
Based on the field data and after the finite element thermal-stress couple calculation,the article analyzes various parameters to influence the temperature gradient caused by paving of asphalt concrete.On this basis,the article puts forward the simplifying mode of the most disadvantage temperature gradient on the section caused by paving the asphalt concrete able to provide the reference for the calculation of section stress caused by paving the asphalt concrete,and finally puts forward some suggestions to prevent the high-temperature' paving asphalt concrete from the crack.
出处
《城市道桥与防洪》
2010年第9期294-298,共5页
Urban Roads Bridges & Flood Control
关键词
箱梁桥
沥青混凝土
高温摊铺
热-应力耦合分析
梯度温度
box beam bridge
asphalt concrete
high-temperature paving
thermal-stress couple analysis
gradient temperature
