多孔混凝土材料应力-应变损伤演化规律仿真
Simulation of stress-strain damage evolution law of porous concrete materials
马腾飞 1吉卓礼 2李涛 3杨方2
作者信息
- 1. 六盘水师范学院 土木与规划学院,贵州 六盘水 553000;云南大学 建筑与规划学院,云南 昆明 650000
- 2. 六盘水师范学院 土木与规划学院,贵州 六盘水 553000
- 3. 六盘水师范学院 矿业与机械工程学院,贵州 六盘水 553000
- 折叠
摘要
混凝土材料由于自身结构问题,导致影响混凝土材料损伤的因素较为复杂,为有效监测多孔混凝土材料损伤程度,需对路面面层用多孔混凝土材料损伤规律展开演化分析,为此提出路面面层用多孔混凝土材料损伤演化规律仿真方法.对路面面层用多孔混凝土材料应力-应变关系展开具体分析,以此建立流动准则,结合有限元软件完成多孔混凝土材料损伤演化模型的建立,通过建立的演化模型实现路面面层用多孔混凝土材料损伤规律演化分析,获取多孔混凝土材料损伤演化规律.研究结果表明,多孔混凝土材料会随着时间的延长、温度的变化、载荷值的增长损伤程度不断增加;与此同时,路面面层厚度、裂纹扩展系数的增加以及位移值的增大,同样会增加多孔混凝土材料的损伤程度.
Abstract
In order to effectively monitor the degree of damage to porous concrete material,it is necessary to con-duct an evolution analysis of the damage law of porous concrete materials used in pavement surface layers.To this end,a simulation method for the evolution law of the damage of porous concrete materials used in pavement surface layers was put forward.Firstly,the stress-strain relationship of porous concrete materials used in pavement surface layers was analyzed in detail.Based on this,a flow criterion was established.Then,finite element software was used to construct a damage evolution model for porous concrete materials.Moreover,the evolution analysis was completed by the model.Finally,the evolution law of the damage of porous concrete materials was obtained.The following conclu-sions can be drawn from the simulation results.The damage degree of porous concrete materials increases with the ex-tension of time,temperature changes,and increases in load values.Meanwhile,the increase of the thickness in pave-ment surface layer and crack propagation coefficient,as well as the increase of displacement value also increase the degree of damage of porous concrete materials.
关键词
路面面层/多孔混凝土材料/损伤演化规律/应力-应变关系Key words
Pavement surface/Porous concrete/Damage evolution law/Stress-strain relationship引用本文复制引用
基金项目
贵州省教育厅青年科技人才成长项目(黔教合 KY 字[2020]119)
六盘水师范学院学科(培育)团队项目(LPSSY2023XKPYTD01)
贵州省教育厅青年科技人才成长项目(黔教合KY字[2022]045)
贵州省教育厅青年科技人才成长项目(黔教合KY字[2022]057)
贵州省科技计划(黔科合基础-ZK[2022]一般529)
六盘水师范学院校级项目(LPSSYYBZK202213)
出版年
2024
NETL
NSTL
万方数据