岩土工程学报2023，Vol.45Issue(z2)：55-60,6.DOI:10.11779/CJGE2023S20001
空沟-波阻板联合隔振屏障的试验研究与数值分析
Experimental research and numerical analysis of an open Trench-WIB barrier
摘要
Abstract
The vibration isolation effects of an open trench-WIB barrier on the vertical harmonic loads are studied by using the combined method of model tests and numerical simulations.Firstly,the vibration isolation effects of the open trench-WIB barrier and the open trench are compared.The experimental results show that the vibration isolation effects of the combined barrier are better than those of the open trench barrier at each excitation frequency and the most obvious in the low frequency.Then,combined with the perfectly matched layer absorption boundary,a three-dimensional finite element model is established using the COMSOL to set up the open trench-WIB barrier in an elastic half space under harmonic loads.The vibration isolation effects are evaluated through the acceleration amplitude attenuation coefficient,and the influences of the geometric parameters of the combined barrier on the isolation effects are studied.The results show that the geometric parameters of the combined barrier have a great influence on the vibration isolation effects.The larger the depth of the open trench,the better the isolation effects,but different in the low frequency.Meanwhile,the larger the depth and length of the WIB,the better the vibration isolation effects of the combined barrier.Moreover,the open trench-WIB barrier is more suitable for the near-field active vibration isolation.关键词
地基隔振/空沟-波阻板联合屏障/模型试验/相似理论/数值模拟Key words
vibration isolation of foundation/open trench-WIB barrier/model test/similarity theory/numerical simulation分类
建筑与水利引用本文复制引用
周凤玺,周志雄,梁玉旺,刘佳,马强..空沟-波阻板联合隔振屏障的试验研究与数值分析[J].岩土工程学报,2023,45(z2):55-60,6.基金项目
国家自然科学基金项目(12362032,51978320) （12362032,51978320）
甘肃省重点研发计划项目(23YFFA0063) （23YFFA0063）
