Rheological constitutive model of rock mass based on viscoplastic theory

• 作 者: 许勇铁 周先齐
• 机 构: College of Civil Engineering,Harbin Intitute of Technology,Dept.of Civil Engineering and Architectur
• 出 处: Journal of Harbin Institute of Technology
• 发表日期: 2010年06期
• 关键词: constitutive rock rheological creep verified rationality validity behaviour rheo

With many major projects under construction,more and more attention is paid to rheological mechanical properties of rock mass,and extensive researches are carried out for rheological constitutive modeling of rock mass.Based on viscoplastic theory,a new rheological constitutive model is proposed.The rationality and validity of proposed model are verified through the creep test data.The results show that the rheological constitutive model based on viscoplastic theory is able to simulate the typical creep curves of rock mass and the identified parameters are reasonable.Therefore,the rheological constitutive model could be used to describe the rheological mechanical behaviour of rock mass.

With many major projects under construction, more and more attention is paid to rheological mechanical properties of rock mass, and extensive researches are carried out for rheological constitutive modeling of rock mass.Based on viscoplastic theory, a new rheological constitutive model is proposed.The rationality and validity of proposed model are verified through the creep test data.The results show that the rheological constitutive model based on viscoplastic theory is able to simulate the typical creep curves of rock mass and the identified parameters are reasonable.Therefore, the rheological constitutive model could be used to describe the rheological mechanical behavior of rock mass.