超材料混凝土减振性能研究现状与展望
Status and prospects of research on vibration reduction performance of metaconcrete
熊剑荣 1任凤鸣 1田时雨 1黎永盛1
作者信息
- 1. 广州大学 土木工程学院,广州 510006
- 折叠
摘要
超材料混凝土作为一种具有振动衰减效应的新型材料,由包裹弹性软涂层的金属重芯取代天然粗骨料,与砂浆搅拌而形成.当受动力作用时,超材料混凝土能够利用人工骨料局部共振产生的带隙,衰减混凝土的振动响应.近年来,超材料混凝土因其在高频动力作用下显著的减振性能,在结构抗爆抗冲击领域受到了高度关注,通过改变人工骨料的结构,已经研发出多种形式的超材料混凝土,并针对其振动衰减性能开展了系统的理论分析、数值模拟和试验研究.为推动超材料混凝土在土木工程领域的研究和应用,该研究对超材料混凝土减振性能的研究工作进行了系统地归纳总结,探讨了超材料混凝土在工程性能方面存在的问题和瓶颈,并对超材料混凝土减振性能的研究方向和应用前景进行了展望.
Abstract
Metaconcrete,a new type of material with vibration attenuation characteristics,is formed by replacing natural coarse aggregates with a heavy metal core wrapped with an elastic soft coating and mixed with mortar.When subjected to dynamic loads,metaconcrete could attenuate the vibration response of concrete using the bandgap generated by the local resonance of artificial aggregates.Recently,metaconcrete has received great attention in the field of blast and impact resistance due to its remarkable vibration reduction performance under high-frequency dynamic action vibration,and various forms of metaconcrete have been developed by changing the structure and arrangement of aggregates.Systematic theoretical derivation,numerical analysis and experimental studies have been carried out for the vibration attenuation performance of metaconcrete.In order to accelerate the research and application of metaconcrete in the civil engineering,the research work on its vibration reduction performance was systematically summarized,the problems and bottlenecks in the engineering performance were discussed,and the future vibration attenuation research and application prospects of metaconcrete were prospected in this paper.
关键词
超材料混凝土/人工骨料/局部共振/带隙特征/振动衰减Key words
metaconcrete/artificial aggregates/local resonance/bandgap feature/vibration attenuation引用本文复制引用
基金项目
国家自然科学基金(52338005)
国家自然科学基金(52178125)
出版年
2024
NETL
NSTL
万方数据