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工程案例|鄭州軌道交通噪音治理(一期工程)|
瀏覽: 發布日期:2021-01-05


其中設計要求:
(1)通孔型泡沫鋁,厚度不小于8mm,抗拉強度≥4MPa,斷裂載荷≥140N,NRC≥0.75;
(2)表面進行高溫氟碳噴涂,膜厚≥60μm;
(3)對聲屏障聲學性能進行計算,對安裝節點、結構構件進行深化設計,整體結構需經受住1.5KN/㎡風載荷。
方案設計:
(1)利用軌道防撞墻與國標Q235 H型鋼鏈接。
(2)使用新型材料通孔型吸聲泡沫鋁組合成吸聲材料與空腔的吸音板形式,最大程度發揮中低頻吸聲特性。
(3)該聲屏障工程在高振動環境下不失效,同時在積水環境中也不喪失吸聲性能。滿足工程維護維修需要。
(4)根據設計要求進行了結構深化設計,并對該工程案例進行了聲學計算、力學計算與風載荷測試。
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