期刊论文

中文

硅酸盐通报

1001-1625

2019

38

2

482-487

10.16552/j.cnki.issn1001-1625.2019.02.031

湖南省自然科学基金面上项目（2018JJ2331）；

本校为第一机构

基岩与其上的混凝土结构组成的一体两介质结构的力学性能直接影响到上部工程结构安全性与可靠性。为了探讨岩石混凝土一体两介质结构在干燥与饱水状态下的损伤力学行为,开展了干燥与饱水状态下岩石、混凝土和岩石混凝土一体两介质三种材料在单轴荷载条件下声发射试验研究。根据声发射事件数表征损伤变量与本构关系,对比分析了岩石混凝土一体两介质材料的变形、损伤破坏特征。结果表明:干燥与饱水状态下三种结构的声发射特性大体相似,可按材料变形将声发射事件分成压密阶段、弹性阶段、塑性阶段和破坏阶段。在压密与弹性阶段,干燥一体两介质结构声发射特征与岩石类似,撞击数出现小幅阶跃现象,声发...

The mechanical properties of the bi-material structure composed of bedrock and its concrete structure directly affects the safety and reliability of the superstructure.In order to investigate the damage mechanics behavior of bi-material structure of rock-concrete under dry and saturated states,the acoustic emission test under uniaxial load was carried out.According to the number of acoustic emission events reveals the damage variable and constitutive relationship,the deformation and damage characteristics of bi-material of rock-concrete were compared and analyzed.The results show that the acou...