摘要
水泥混凝土道面修补砂浆在凝结硬化阶段,受到原混凝土道面的约束作用。为研究修补砂浆的约束变形特征,文中利用室内模型试验对修补砂浆的多个方向约束变形进行了实时监测,同时利用ABAQUS有限元软件对室内试验模型进行模拟。结果表明,约束变形模型中降温导致的温度应力不可忽略。同时通过界面应力计算分析了修补材料损坏率较大的原因和原混凝土损坏位置的分布特征。
The cement pavement repair mortar is constrained by the original concrete pavement in the setting and hardening stage.In order to study the constrained deformation characteristics of the repair mortar,indoor model tests were used to constantly monitor the constrained deformation of repair mortar in various directions,and ABAQUS was used to simulate the indoor test model.The results show that the temperature stress caused by temperature decrease in the constrained deformation model cannot be ignored.Through the calculation of the interface stress,the reasons for the easy damage of repair material was found and the distribution characteristic of repair structure damage positions was analyzed.
作者
张昊
陶泽峰
袁捷
ZHANG Hao;TAO Zefeng;YUAN Jie(Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 201804, China;The Key Laboratory of Infrastructure Durability and Operation Safety in Airfield of CAAC, Tongji University, Shanghai 201804, China)
出处
《交通科技》
2022年第1期1-4,共4页
Transportation Science & Technology
基金
国家重点研发计划(2019YFB1310600)
国家自然科学基金青年基金项目(51908427)资助。
关键词
水泥混凝土道面
修补砂浆
约束变形
有限元模拟
cement concrete pavement
repair mortar
constrained deformation
finite element simulation
