隔振屏障位置优化及多方案隔振效率对比研究

Position Optimization of Vibration Isolation Barriers and Comparative Study on Vibration Isolation Efficiency of Multiple Schemes

摘要: 本文利用SAP2000建立了三维土体有限元模型，分析了隔振屏障相对于振源不同距离(5 m, 10 m, 15 m, 20 m, 30 m)下的隔振性能，并对比了连续隔振沟与双排“梅花型”隔振孔两种方案的隔振效率。研究结果表明：在1~50 Hz频率范围内，屏障距振源30 m时表现出最佳的整体隔振效果；隔振沟与隔振孔方案均能显著衰减振动，但隔振沟减振效果优于双排隔振孔。本研究可为实际工程中隔振屏障的优化设计与方案选型提供理论依据与技术参考。

Abstract: This study employs SAP2000 to establish a three-dimensional finite element model of soil, analyzing the vibration isolation performance of barriers at varying distances (5 m, 10 m, 15 m, 20 m, and 30 m) from the vibration source. A comparative evaluation of the isolation efficiency between a continuous trench and a double-row quincunx arrangement of boreholes was conducted. The results indicate that within the frequency range of 1~50 Hz, the barrier placed 30 m from the source exhibits the best overall vibration isolation effect. Both the trench and borehole schemes significantly attenuate vibration, with the trench demonstrating superior performance over the double-row borehole configuration. This research provides theoretical and technical references for the optimal design and scheme selection of vibration isolation barriers in practical engineering.