加载速率对岩石抗压和抗拉强度的影响

加载速率对岩石抗压和抗拉强度的影响 English Version

摘要: 采用气-液式压缩联动系统的快速加载机,在加载速率为1×10~(-1)～1×10~5(kg·cm~(-2))·s~(-1)范围内对两种花岗岩进行单轴抗压和抗拉试验研究。试验结果表明:花岗岩的破坏强度随加载速率的提高而明显增加,同时抗压与抗拉强度之比值,并非一个恒定值,它随加载速率的提高略有增大。
- 加载速率 /
- 岩石 /
- 抗拉强度 /
- 冲压试验 /
- 直接拉伸试验 /
- B类 /
- 锥形楔 /
- 快速加载 /
- 间接拉伸试验 /
- 压头
Abstract: This paper presents the results of uniaxial compressive and tensile test for two different kind of granites. The test were conducted by the complex liquid-gas pressure system under the loading rate from 1 × 10-1 （kg · cm-2） · s-1 to 1 × 10⁵（kg · cm-2） · s-1. The results of test show that compressive and tensile failure strength of rocks notably increase with the rate of loading of specimens. Also, the strength ratio of compression-tension of rocks is not a constant. It increase slightly with the loading rate.