| 摘要: |
| 用卡波姆凝胶配制与流变混凝土浆体流变性能等效的透明浆体，通过可视化物模试验模拟得到流变混凝土骨料的运动规律.基于真实与模拟介质流动图像、振动骨料分布实时一致性原则，分析了拌和物流动过程形变、振动骨料沉降特点及其形成机理.结果表明：流变混凝土基于等效流变性能的可视化模拟方法独特可行，可直观获取骨料沉降运动规律以及速度场、位移场等运动形态参数，为进一步研究流变混凝土的本构关系及颗粒接触模型提供基础. |
| 关键词: 流变混凝土 可视化模拟 透明浆体 运动形态参数 |
| DOI：103969/j.issn1007 9629201601004 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目（51279054） |
|
| Experimental Simulation Study on Aggregate Motion of Rheological Concrete |
|
TIAN Zhenghong1, LI Xuhang2, ZHU Feipeng3, PENG Zhihai4
|
|
1.State Key Laboratory of HydrologyWater Resources and Hydraulic Engineering, Hohai University,Nanjing 210098, China;2.College of Water Conservancy and Hydropower Engineering, Hohai University,Nanjing 210098, China;3.College of Mechanical and Materials, Hohai University, Nanjing 210098, China;4.Sinohydro Bureau Seventh Co., Ltd., Chengdu 610081, China
|
| Abstract: |
| Visual physical model experiment of aggregates motion law were carried out via transparent adhesive prepared from carbomer gel with equivalent rheological properties of fresh concrete. Based on the principle of consistency in both real time image of flow process and real aggregate distribution from fresh mortar and transparent adhesive, the mechanism of rheological deformation of mortar and aggregate settling characteristics forced vibration was analyzed. Results indicate that visual simulation method of fresh concrete based on equivalent rheological properties is unique and feasible, and from the experiments the aggregates settlement motion law i.e., displacement fields, velocity fields and other motion morphological parameters can be directly obtained，which provide vital foundation on the analysis of constitutive relationship and grain contact model of rheological concrete. |
| Key words: rheological concrete visual simulation transparent adhesive motion morphological parameter |
