考虑结构性的天然软粘土流变特性研究  

STUDY ON RHEOLOGICAL BEHAVIOR OF UNDISTURBED SOFT CLAY IN WENZHOU CONSIDERING STRUCTURAL PROPERTY

作　　者：魏新江[1,2] 唐杰[1] 孙苗苗[2] 方华建[3] WEI Xinjiang;TANG Jie;SUN Miaomiao;FANG Huajian(Anhui Univ. of Science and Technology, Anhui Huainan 232000, China;Zhejiang Univ. City College, Hangzhou 310015, China;Zhejiang Institute of Hydraulics ＆ Estuary, Hangzhou 310020, China)

机构地区：[1]安徽理工大学,安徽淮南232000 [2]浙江大学城市学院,杭州310015 [3]浙江省水利河口研究院,杭州310020

出　　处：《低温建筑技术》2018年第5期94-97,共4页Low Temperature Architecture Technology

基　　金：国家自然科学基金项目(51408549);浙江省自然科学基金(LY16E090005;LY18E080024)

摘　　要：基于边界面弹塑性理论,提出一种可同时考虑软土结构性与长期变形特性的边界面弹塑性本构模型。通过对温州某海堤工程天然软土的原状样分别进行一维压缩试验和三轴流变试验,考查了多组不同加载等级、围压和固结应力比下,温州天然结构性软粘土的流变变形特征。采用该模型对三轴流变试验进行了数值模拟验证其正确性。Based on elastoplastic theory on the boundary surface,a boundary elasto-plastic constitutive model considering both structural and long -term deformation characteristics of soft clay isproposed. With several one-dimensional compression tests and triaxial rheological tests on undisturbedsoft clay of a certain seawall project in Wenzhou,the rheological behavior of undisturbed soft clay isinvestigated under various kinds of load level,confining pressure and consolidation stress ratio. Theconstitutive model is validated by numerical analysis of triaxial rheological tests.

关 键 词：本构模型 温州软粘土 结构性 三轴流变试验 数值模拟 

分 类 号：TU435[建筑科学—岩土工程]