干燥和饱水状态下岩石混凝土一体两介质受力特征试验研究  

Mechanical Performance of Uni-body Bi-material Model for Rock-concrete under Dry and Saturated States

作　　者：曾晟[1] 张妮[1] 孙冰 袁登 ZENG Sheng;ZHANG Ni;SUN Bing;YUAN Deng(Nuclear Resources Engineering College,University of South China,Hengyang 421001,China;Civil Engineering College,University of South China,Hengyang 421001,China)

机构地区：[1]南华大学核资源工程学院,衡阳421001 [2]南华大学土木工程学院,衡阳421001

出　　处：《硅酸盐通报》2018年第7期2206-2209,2213,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(51204098);湖南省自然科学基金(2018JJ2331);湖南省科技厅重点研发计划(2015SK2058-4)

摘　　要：为了研究干燥和饱水状态下岩石-混凝土一体两介质损伤破坏特征,揭示饱水作用下一体两介质的破坏机理,开展了砂岩、混凝土和砂岩混凝土一体两介质三种模型试件在干燥和饱水状态下单轴压缩试验研究。结果表明:岩石-混凝土一体两介质表现出单一介质模型连续性的力学特性;干燥和饱水状态下岩石-混凝土一体两介质强度介于岩石和混凝土单一介质之间,且更接近强度更低的混凝土试件;三种模型试件在干燥状态下破坏形式为脆性破坏,而饱水状态下破坏形式为延性破坏。The uniaxial compression tests under dry and saturated states were carried out with sandstone,concrete and uni-body bi-material model for rock-concrete,in order to study the damage characteristics of uni-body bi-material model under dry and saturated states,and reveal the damage mechanism. The results show that uni-body bi-material model for rock-concrete exhibit a mechanical property of continuity of single medium model. The strength of uni-body bi-material model for rock-concrete is between rock and concrete,and more close to the concrete samples with lower strength. The failure modes of three types of model samples under dry states are all brittle fracture,but under saturated states it is ductile damage.

关 键 词：岩土工程 岩石混凝土一体两介质 干燥和饱水状态 受力特征 

分 类 号：TU528[建筑科学—建筑技术科学]