Experimental investigation and constitutive modelling of creep-damage behaviours in monzogranite

被引：8

作者：

Wang, Wei ^{[1
,2
]}

Cao, Yajun ^{[1
,2
]}

Zhu, Qizhi ^{[1
,2
]}

Xu, Weiya ^{[1
,2
]}

Shao, Jianfu ^{[1
,2
]}

机构：

[1] Hohai Univ, Key Lab, Minist Educ Geomech & Embankment Engn, Nanjing, Jiangsu, Peoples R China

[2] Hohai Univ, Geotech Res Inst, Nanjing, Jiangsu, Peoples R China

来源：

EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING | 2015年 / 19卷

基金：

中国国家自然科学基金;

关键词：

viscoplastic damage model; creep; discrete thermodynamics; monzogranite; DISCRETE THERMODYNAMIC APPROACH; TIME-DEPENDENT DEFORMATION; QUASI-BRITTLE ROCKS; CENTRAL JAPAN; GRANITE; GEOMATERIALS; COMPRESSION;

D O I：

10.1080/19648189.2015.1064620

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this study, the creep-damage behaviour of monzogranite is first investigated through triaxial creep tests under different confining pressures. Creep deformation and its rate in the whole creep process are compared and analysed on the basis of the experimental results. It is seen that the rate of creep strains is closely related to applied stress and can be described by an exponential function in terms of deviatoric stress. A discrete viscoplastic damage constitutive model is then formulated in the discrete thermodynamic framework and with micro-mechanical consideration. Comparisons between experimental data and numerical prediction show that the model can well describe the typical phenomena of creep behaviour.

引用

页码：S54 / S69

页数：16

共 30 条

[1]

[Anonymous], INT J FRACTURE

[2]

[Anonymous], 1997, INT J ROCK MECH MIN, DOI DOI 10.1016/S1365

[3] Time-dependent cracking and brittle creep in crustal rocks: A review [J].