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采用液压伺服试验系统对经历不同高温后花岗岩的力学性能进行试验研究,分析了高温作用对花岗岩峰值应力、峰值应变、弹性模量、应力-应变曲线等力学性能的影响,结果表明:高温后花岗岩的力学性能随温度的升高而劣化,表现为随受热温度的升高,花岗岩峰值应力、弹性模量降低,峰值应变逐渐增大。此外本文还探讨了花岗岩峰值应力、峰值应变、弹性模量和应力-应变关系随温度的变化规律,并通过回归分析,得到了花岗岩峰值应力、峰值应变、弹性模量随温度变化的回归公式。
The hydraulic servo test system was used to study the mechanical properties of granite under different temperatures. The effects of high temperature on the mechanical properties of granite such as peak stress, peak strain, elastic modulus and stress-strain curve were analyzed. The results show that the granite The mechanical properties of the granite deteriorate with increasing temperature. The peak stress, the modulus of elasticity and the peak strain of the granite increase with the increase of the heating temperature. In addition, the relationship between peak stress, peak strain, elastic modulus and stress-strain of granite with temperature was also discussed. Through regression analysis, regression formulas of peak stress, peak strain and elastic modulus of granite with temperature were obtained.