%0 Journal Article
%T CONSTITUTIVE MODEL OF STRUCTURAL LOESS<br>结构性黄土的本构模型
%A HU Zai-qiang
%A SHEN Zhu-jiang
%A XIE Ding-yi
%A <br>胡再强
%A 沈珠江
%A 谢定义
%J 岩石力学与工程学报
%D 2005
%I 
%X Natural sedimentary loess has structural properties,and it shows different mechanical properties before and after structural failure. Laboratory tests are performed to reveal the structural properties and collapsible deformation characteristics. The yield function and damage function of the unsaturated loess are established based on the principle of loess damage evaluation principle,the relationship between stable porous ratio and stable state of wholly-disturbed saturated clay,and the fact that inverse deformation is caused by the slip and crash among masses. The constitutive mathematical model of unsaturated natural loess is set up,by which loading process and other properties can be simulated. This model has clear physical meaning and the numerical calculation by it agrees well with tests.
%K rock and soil mechanics
%K natural loess
%K structural property
%K collapsible deformation
%K damage
%K function
%K damage evolution principle
%K constitutive model<br>岩土力学
%K 原状黄土
%K 结构性
%K 湿陷变形
%K 损伤函数
%K 损伤演化律
%K 本构模型
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=D3421FAA1A0A0F0C&jid=35E747D791A1346351AFB523B7FA35CB&aid=CA0F8E3273C07F13&yid=2DD7160C83D0ACED&vid=B91E8C6D6FE990DB&iid=E158A972A605785F&sid=90075EB19043D533&eid=1FA4E9C3E6E88FC8&journal_id=1000-6915&journal_name=岩石力学与工程学报&referenced_num=17&reference_num=13