半刚性材料温度应力分析研究

Study of temperature-stress about semi-rigid material

针对半刚性基层材料缺乏对因外界温度变化所产生应力问题的研究,采用了国内4个典型省份的夏季及冬季极限温度,计算了在不同典型结构及不同地区条件下,半刚性材料受温度影响产生的温度应力.研究结果表明,对不同面层结构,受外界温度影响所产生的温度应力值相差很大,对在高速公路以及一级公路中使用的半刚性材料,完全可减少对温度性能的要求.该研究成果将室内测试结果和实际应用加以联系,对完善半刚性材料温度开裂评价体系具有一定的意义.

Lack to the study for Semi-rigid material that the temperature-stress problem produced because of the external temperature changes. Basing on four-typical-provinces' summer and winter's limited-temperature, calculating the temperature-stress of Semi-rigid material which causes by temperature's influence, under different typical-structures and different districts. The study indicates under different layer-structure, the temperature-stress produced by external differing greatly. It proves that for semi-rigid material, in expressway and one-level highway, can decrease the requirement of temperature-function. It makes connection of indoor-test with the real-application, and is significance to semi-rigid material's Temperature-cracking-evaluation-system .