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引用本文:	孙雅珍,朱传江,王金昌,顾章义.高黏弹沥青砂蠕变损伤模型[J].建筑材料学报,2016,19(2):404-407

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高黏弹沥青砂蠕变损伤模型
孙雅珍¹, 朱传江², 王金昌³, 顾章义⁴
1.沈阳建筑大学交通工程学院,辽宁沈阳110168;2.浙江省交通工程建设集团有限公司设计分公司,浙江杭州310051;3.浙江大学交通工程研究所,浙江杭州310058;4.沈阳建筑大学理学院,辽宁沈阳110168

摘要:

应用Kachanov损伤模型表征沥青砂损伤的增长变化律，将Burgers模型与损伤因子进行耦合，构建出能够描述高黏弹沥青砂3阶段蠕变全过程的蠕变损伤模型.借助高黏弹沥青砂的弯曲蠕变试验数据，利用最小二乘法，得到相关模型系数和蠕变损伤演化曲线.将此蠕变损伤模型曲线与试验结果及Burgers模型曲线进行对比研究.结果表明：该蠕变损伤模型能准确描述高黏弹沥青砂的蠕变3阶段特性，拟合相关系数达到0998.

关键词: 蠕变损伤模型黏弹性与损伤耦合模型高黏弹沥青砂蠕变试验模型参数

DOI：103969/j.issn1007 9629201602033

分类号:

基金项目:国家自然科学基金资助项目(51478276)；辽宁省自然科学基金资助项目(2014020070)；辽宁省教育厅项目(L2014234)

Creep Damage Model of High Viscoelastic Asphalt Sand Mixture

SUN Yazhen¹, ZHU Chuanjiang², WANG Jinchang³, GU Zhangyi⁴

1.School of Transportation Engineering, Shenyang Jianzhu University, Shenyang 110168, China;2.Design Branch, Zhejiang Communications Construction Group Co., Ltd., Hangzhou 310051, China;3.Institute of Transportation Engineering, Zhejiang University, Hangzhou 310058, China;4.School of Science,Shenyang Jianzhu University, Shenyang 110168, China

Abstract:

Kachanov damage model was used to describe the growth rate of damage. Coupled with the Burgers model, the model parameters and the creep damage curve were obtained through the high viscoelastic bending creep tests with least square method. The comparison among the Burgers model, creep test and creep damage model was studied. The results indicate that the new creep damage model for the high viscoelastic asphalt sand mixture can describe accurately three stages of creep performance, fitting correlation coefficient is 0998.

Key words: creep damage model coupling model of viscoelastic and damage high viscoelastic asphalt sand mixture creep test model parameter