Viscoelastoplastic constitutive model for creep deformation behavior of asphalt sand

摘要：

A uniaxial viscoelastoplastic model that can describe whole creep behaviors of asphalt sand at different temperatures was presented. The model was composed of three submodels in series, which describe elastoplastic, viscoelastic and viscoplastic characteristics respectively. The constitutive equation was established for uniaxial loading condition, and the creep representation was also obtained. The constitutive parameters were determined by uniaxial compression tests under controlled-stress of 0.1 Mpa with five different test temperatures of 20, 40, 45, 50 and 60℃. Expressions of the model parameters in terms of temperatures were also given. The model gave prediction at various temperatures consistent with the experimental results, and can reflect the total deformation characterization of asphalt sands.

关键词： asphah sand viscoelastoplastic model creep experiment model parameters

作者: YE Yong(叶永) YANG Xin-hua(杨新华) CHEN Chuan-yao(陈传尧)

作者单位: College of Civil Engineering and Mechanics, Huazhong University of Science and Technology,Wuhan 4300 College of Civil Engineering and Mechanics, Huazhong University of Science and Technology,Wuhan 4300

会议类型: 国际会议

会议名称: 第九届全国流变学学术会议

会议地点: 长沙

会议语种:英文

页码: 13-16

在线出版日期: 2008-09-28（万方平台首次上网日期，不代表论文的发表时间）