摘要
根据传热学相关理论,应用大型有限元软件ANSYS10.0对夏季高温条件下CRCP+AC复合式路面瞬态温度场进行了模拟,利用温度-结构耦合原理计算了日周期气温下路面结构的温度应力.分析过程中,考虑了温度沿路面深度方向分布的非线性特征及初始参考温度的非均匀性,对CRCP+AC复合式路面温度应力的影响因素进行了分析.研究结果表明,AC层厚度、CRC层厚度、CRC与基层接触条件的改变对路面结构温度应力的影响较大.当AC层厚度小于6 cm后,改变CRC层厚度对混凝土板温度应力影响不大.
Based on the heat conduction theory, the transient thermal field of CRCP＋AC composite pavement on high-temperature was simulated with ANSYS10.0. The thermal stress of pavement on daily cycle temperature was calculated by using thermal-structure coupling theory. In the analysis, the impact factors of the thermal stress were studied for CRCP＋AC composite pavement to consider the nonliner distribution feature of temperature along the pavement depths and the initial nonhomogeneous reference temperature. The results have shown that the thickness of AC layer and of CRC layer, and the contact conditions between CRC and basecouse have great influence on the thermal stress of pavement structure. The change of the thickness of CRC layer has little influence on the concrete thermal stress when the thickness of AC layer is less than 6 cm.
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第10期13-18,共6页
Journal of Hunan University:Natural Sciences
基金
西部交通建设项目(20090000044)
