Rheological constitutive model of rock mass based on viscoplastic theory

XU Yong-tie^1,2, ZHOU Xian-qi²

1.College of Civil Engineering,Harbin Intitute of Technology,Harbin 150080,China;2.Dept.of Civil Engineering and Architecture,Xiamen University of Technology,Xiamen 361024,China



Abstract:

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.

Key words:  viscoplastic theory  rheological constitutive  rheological medium  plastic potential theory

DOI£º10.11916/j.issn.1005-9113.2010.06.023

Clc Number:TU45

Fund: