四川建材
四川建材
사천건재
SICHUAN BUILDING MATERIALS
2013年
5期
96-97
,共2页
岩石断裂韧度%SHPB系统%温度
巖石斷裂韌度%SHPB繫統%溫度
암석단렬인도%SHPB계통%온도
Rock Fracture Toughness%SHPB System%Temperature
根据Central Cracked Circular Disk-Split Hop-kinson Pressure Bar ( CCCD-SHPB)测试原理，采用平台巴西圆盘开展温度对岩石类材料动态断裂性能影响的实验研究。实验中控制加载速率基本一致，仅改变试件测试的温度，实现了岩石材料在同一加载速率、不同温度下的动态断裂实验，进而开展岩石材料动态断裂韧度的温度相关性研究。实验结果表明，当温度处于8~100℃时，动态断裂韧度随着温度的升高而逐步下降，近似呈线性关系。
根據Central Cracked Circular Disk-Split Hop-kinson Pressure Bar ( CCCD-SHPB)測試原理，採用平檯巴西圓盤開展溫度對巖石類材料動態斷裂性能影響的實驗研究。實驗中控製加載速率基本一緻，僅改變試件測試的溫度，實現瞭巖石材料在同一加載速率、不同溫度下的動態斷裂實驗，進而開展巖石材料動態斷裂韌度的溫度相關性研究。實驗結果錶明，噹溫度處于8~100℃時，動態斷裂韌度隨著溫度的升高而逐步下降，近似呈線性關繫。
근거Central Cracked Circular Disk-Split Hop-kinson Pressure Bar ( CCCD-SHPB)측시원리，채용평태파서원반개전온도대암석류재료동태단렬성능영향적실험연구。실험중공제가재속솔기본일치，부개변시건측시적온도，실현료암석재료재동일가재속솔、불동온도하적동태단렬실험，진이개전암석재료동태단렬인도적온도상관성연구。실험결과표명，당온도처우8~100℃시，동태단렬인도수착온도적승고이축보하강，근사정선성관계。
Based on the principles of Central Cracked Cir-cular Disk -Split Hopkinson Pressure Bar ( CCCD - SHPB ) test, platform Brazilian disc was used to study temperature effect on rock fracture properties. In the experimental by controlling the pulse load, the testing temperature is the only change condi-tions, realized the rock material at the same loading rate, dy-namic fracture experiment of different temperature, and then to carry out the dynamic fracture toughness of rock material temper-ature correlation studies. Test results show that the temperature is 8℃ to 100℃, the dynamic fracture toughness increased with the temperature gradually decreased, approximate linear rela-tionship.
