几何参数对周期性波阻块连续屏障带隙特性的影响OA
Influence of geometric parameters on the band-gap characteristics of perodic wave barrier blocks
为探究几何参数对周期性波阻块连续屏障带隙特性的影响,基于声子晶体带隙理论,提出了以混凝土为基体、橡胶为包裹层、天然土体为芯体的周期性波阻块结构设计方案,采用有限元法对周期性波阻块的带隙特性进行了计算,系统分析了几何参数对带隙特性的影响机制,并结合室内模型对周期性波阻块的带隙特性进行了验证.结果表明:基体常数、包裹层厚度和芯体尺寸对带隙宽度的影响较大,而芯体形状的影响则不明显;影响带隙特性的主要因素依次为基体常数、芯体尺寸、包裹层厚度、芯体形状;试验所得衰减域与理论完全带隙区间契合度较高,证实了周期性波阻块连续屏障的带隙特性.
To investigate the influence of geometric parameters on the band-gap characteristics of periodic wave barrier blocks,this study analyzes a periodic barrier structure based on phononic crystal band-gap theory.Using the finite element method,a periodic wave barrier block composed of a concrete matrix,a rubber coating layer,and a natural soil core is modeled to evaluate its band-gap characteristics.Orthogonal experiments are subsequently designed to analyze the effects of geometric parameters on the complete band gap,and indoor model experiments are conducted to verify the effectiveness of the proposed barrier structure.Results show that the lattice constant,coating layer thickness,and core size significantly affect the band-gap width,whereas the influence of core shape is relatively insignificant.The main factors affecting the band-gap characteristics,in descending order of influence,are:lattice constant,core size,coating layer thickness,and core shape.The experimentally observed attenuation zones agree well with the theoretically predicted complete band-gap ranges,thereby confirming the band-gap characteristics of the periodic wave barrier blocks.
王海洋;尹洪山;许汝杭;王珠;杨焱淞
重庆交通大学交通土建工程材料国家地方联合工程实验室,重庆 400074||重庆交通大学 土木工程学院,重庆 400074湖北交投鄂西高速公路建设管理有限公司,武汉 430051重庆交通大学 土木工程学院,重庆 400074重庆交通大学 土木工程学院,重庆 400074重庆交通大学 土木工程学院,重庆 400074
交通工程
几何参数连续屏障周期性波阻块带隙特性
geometric parameterscontinuous barriersperiodic wave blocksband-gap characteristics
《重庆大学学报》 2026 (8)
23-32,10
重庆市自然科学基金项目(CSTB2023NSCQ-MSX0180)重庆交通大学交通土建工程材料国家地方联合工程实验室开放基金项目(LHSYS-2021-006)安徽省建筑声环境重点实验室开放基金项目(AAE2022KFO2)重庆交通大学-四川路桥研究生联合培养基地项目(JDLHPYJD2020015).Supported by Natural Science Foundation of Chongqing(CSTB2023NSCQ-MSX0180),the Open Fund Project of National and Local Joint Engineering Laboratory of Transportation Civil Engineering Materials of Chongqing Jiaotong University(LHSYS-2021-006),the Open Fund Project of Anhui Provincial Key Laboratory of Building Acoustic Environment(AAE2022KFO2),and the Graduate Joint Training Base Project of Chongqing Jiaotong University and Sichuan Road and Bridge(JDLHPYJD2020015).
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