噪声与振动控制2017，Vol.37Issue(5)：198-203,6.DOI:10.3969/j.issn.1006-1355.2017.05.041
聚氨酯硬泡连续屏障近场隔振效果分析
Analysis of Near-field Isolation Effect of Rigid Polyurethane Foam Continual Barriers
摘要
Abstract
The traditional continuous barrier has ideal effect for alleviating environmental vibration. However, its overall stability and the effect of low-frequency vibration isolation are poor. Based on this background, the polyurethane rigid foam continual barrier with anchor constraints is proposed in this paper. Through the finite element analysis, the vibration isolation performances of the polyurethane rigid foam continual barrier and the concrete continual wall barrier under the harmonic excitation of ground vibration source and pile vibration source are investigated respectively. The results show that under the excitation of the ground vibration source, both the continuous concrete wall and the continuous rigid polyurethane foam barrier have good vibration isolation effects for medium and high frequency vibration. The vibration isolation effect of the concrete continuous wall for low frequency (<10 Hz) is poor, and the continuous rigid polyurethane foam barrier has a good vibration isolation effect for 5 Hz-10 Hz low-frequency vibration. Under the pile vibration excitation, the vibration isolation effect of both barriers is better than that under the ground vibration source excitation. Both barriers have good vibration isolation effect for the middle and high frequency vibration and the low frequency vibration of 5 Hz-10 Hz.关键词
振动与波/连续屏障/低频振动/近场隔振/聚氨酯硬泡Key words
vibration and wave/continuous barrier/low-frequency vibration/near-field vibration isolation/rigid polyurethane foam分类
资源环境引用本文复制引用
常亮,曾松,朱先均,赵艳影,吴子祥..聚氨酯硬泡连续屏障近场隔振效果分析[J].噪声与振动控制,2017,37(5):198-203,6.基金项目
国家自然科学基金面上资助项目(11372125) （11372125）
江西省自然科学基金资助项目(20161BAB216103,20161BAB201005) （20161BAB216103,20161BAB201005）
