高温作用后花岗岩力学性能试验研究  

Experimental Study on Mechanical Properties of Granite after High Temperature

作　　者：陈有亮[1] 邵伟[1] 周有成[1] 

机构地区：[1]上海理工大学土木工程系,上海200093

出　　处：《力学季刊》2011年第3期397-402,共6页Chinese Quarterly of Mechanics

基　　金：国家自然科学基金(10872133);上海市浦江人才计划(09PJ1407700)

摘　　要：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 experimental studies on the mechanical properties of granite after different high temperature were conducted by hydraulic servo testing system.The influence of different high temperatures on peak stress,peak strain,elastic modulus,stress-strain curve of granite was analyzed.The test results show that the mechanical properties of granite after high temperature deteriorated with the rise of temperature,and the peak stress and elastic modulus decreased with the rise of temperature,while the peak strain increased gradually.And the regularity and mechanism of peak stress,peak strain,elastic modulus,stress-strain curve of granite affected by different temperature was analyzed.And regression formulas of the regularity and mechanism of peak stress,peak strain and elastic modulus changing with different temperature were obtained by regression analysis.

关 键 词：花岗岩 高温 峰值应力 峰值应变 弹性模量 应力-应变关系 

分 类 号：TU452[建筑科学—岩土工程]