温度围压影响下盐岩的SHPB实验  

SHPB Experimental Research of Rock Salt Under the Effect of Temperature and Confining Pressure

作　　者：张凯 陈荣刚[1] 

机构地区：[1]陆军军官学院,合肥230031

出　　处：《重庆理工大学学报（自然科学）》2012年第12期36-39,共4页Journal of Chongqing University of Technology：Natural Science

基　　金：国家重点基础研究发展计划(973计划)项目(2009CB724608)

摘　　要：为了模拟地下工程中盐岩材料所处的环境,在高温分离式Hopkinson压杆(SHPB)实验的基础上设计了一种温度围压装置,用于进行盐岩材料的高应变率实验。针对试件中心温度难以直接检测的问题,首先利用有限元仿真程序对此装置进行了稳定温度场的分析,然后对盐岩试件进行了加温测试验证。实验中得到了试件内部稳定温度的时间历程曲线,并通过对温控仪的设定来控制试件的中心温度。得到了适合研究盐岩在高应变率、温度围压耦合条件下本构关系的一种实验方法。To simulate the environment of rock salt materials in the underground engineering,this work puts forward a temperature and confining pressure based on the high temperature split Hopkinson pressure bar（SHPB）,which is used for the high strain rate experiment of rock salt.To solve the problem that the inner temperature of the specimen is hard to test directly,the static temperature field is analyzed by the use of finite element simulation program firstly,and then we proceed a warming test for rock salt specimen.An inner temperature and time process curve of the rock salt specimen is got by the experiment,and we control the temperature controller to limit the specimen＇s inner temperature.An experimental method appropriated for the rock salt＇s constitutive relation study with high strain rate condition coupled with temperature and confining pressure is achieved.

关 键 词：SHPB 盐岩 三向围压 加温实验 

分 类 号：TU55[建筑科学—建筑技术科学]