通过弯曲梁流变试验（BBR）得到的蠕变劲度指标，是表征沥青胶结料在低温条件下变形和拉应力的可靠指标。通过不同低温条件下得到的蠕变劲度模量，推导橡胶沥青在 BBR试验中的蠕变规律，并建立模型对结果进行模拟分析，最后通过理论模型与试验结果的对比，认为所建立的本构模型能够较准确的反映橡胶沥青的粘弹性能，具有非常明确的物理意义。%The creep stiffness index which obtained by bending beam rheological test(BBR)is a reliable indicator to characterize deformation and tensile stress at low temperature of asphalt binder.Based on the creep stiffness modulus that obtained under different low temperature test,this paper mainly wants to derived rubber asphalt creep law in BBR tests,and modelling constitutive model to analyze the test re-sults. Finally,by comparing the experimental results and theoretical model that established the constitu-tive model can accurately reflect the viscoelastic properties of rubber asphalt,has a very clear physical meaning.
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