玄武岩纤维树脂混凝土单轴抗压本构模型

Uniaxial compression constitutive model of basalt fiber nesin concrete

为探讨玄武岩纤维树脂混凝土材料在机械结构中应用的理论依据,首先对前期研究制备的最佳组分配合比的玄武岩纤维树脂混凝土进行了单轴抗压试验,获得了玄武岩纤维树脂混凝土的准静态应力-应变曲线。然后,应用损伤力学理论并结合试验数据建立了玄武岩纤维树脂混凝土的单轴抗压本构模型。最后将试验获得的应力-应变曲线与模型曲线进行比较。结果表明,两曲线吻合良好,证明所建立的本构模型可以较好地描述玄武岩纤维树脂混凝土的单轴抗压的力学行为,可为玄武岩纤维树脂混凝土材料的结构设计分析和工程应用提供理论依据。

In order to explore basalt fiber resin concrete material application theory in mechanical structure.Firstly,the uniaxial compressive test of the pre-research and preparation optimal composition basalt fiber resin concrete is performed,and the quasistatic stress-strain curves of basalt fiber resin concrete are obtained.Then,utilising the theory of damage mechanics and the experimental data,the uniaxial compressive constitutive model of basalt fiber resin concrete is established.Finally,comparing the test stress-strain curves with the model curves,the results demonstrate that the two curves can match each other well.It shows that the constitutive model established can well describe the mechanical behavior of uniaxial compression,which provides a theoretical basis on basalt fiber resin concrete material structural analysis and design and engineering applications.