脉冲法对隔声屏障顶端式样的衍射分析  

DIFFRACTION ANALYSIS OF “ADDED DEVICE” OF NOISE BARRIER USING IMPULSE METHOD

作　　者：朱晓天[1] 侯秋文[2] 

机构地区：[1]中国矿业大学建筑系,江苏221008 [2]中国矿业大学数力系,江苏221008

出　　处：《环境工程》2006年第3期54-56,共3页Environmental Engineering

摘　　要：介绍了声屏障顶部结构衍射的评价标准和计算方法。给出了具有T型、橄榄型、弧型、L型等4种不同顶端式样声屏障的衍射声场有限元分析,以及使用脉冲方法得到的各种顶端式样在隔声屏障铺设吸声材料和不铺设吸声材料两种情况下插入损失的计算结果。The evaluation standard and testing method for “added device” of a noise barrier were introduced.Four barriers with different added device were studied and the diffraction fields were visualized using finite element analysis.The insertion losses of four added devices installing on the barriers with and without absorbent material were calculated and compared.

关 键 词：隔声屏障 顶端结构 衍射 插入损失 

分 类 号：TB535.2[理学—物理]