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；实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。

In order to explore the impact of geometric parameters on the characteristics of the continuous barrier gap characteristics of cyclical ripple blocks, based on the theory of sound -crystal band gap, the finite element method is used to calculate the concrete as the base, the rubber as the parcel layer, and the natural soil as the core body as the core body. The band characteristics of the cyclical wave resistance block, which in turn, design the orthogonal experiment to analyze the influence of geometric parameters on the completely band, and combine the indoor model experiment to verify the effectiveness of the band"s characteristics. Results show that the effects of single cell constant, the thickness of the package layer and the core body have a greater impact on the width of the band, while the effect of the core shape is not obvious; The thickness of the parcel layer and the shape of the core; the attenuation domain of the experiment is high and the theoretical completely gap range is high, which confirms the band characteristics of the continuous barrier of the periodic wave block.

U 416?

重庆市自然科学基金(CSTB2023NSCQ-MSX0180)；安徽省建筑声环境重点实验室开放基金课题(AAE2022KF02)