GB12524-90建筑施工场界噪声测量方法免费下载.pdf

???¨?????¤???????ù????·?·¨?· GB12524-90 ±?±ê×????????????¨?????¤×÷???????????¨?????¤?????ú?ú?????ù?????? 1 ???????? 1.1 ?¨?????¤??????±??? ?????????????????¨???¨?????¤????×???????±??????? 1.2 ?¨?????¤???? ?????¤?????¨??±???·??§?????????ò?? ???°???¨???????????·???????¨???ò?????????????? ×?±????ò?? 1.3 ???ù???????ò ?????¨?????¤???ù?°?ì??×??????? ?ú???? ?§???? ?????????°???????ù???? ??±??°???ù±??¨?? ???¤?????ú?ú?????ù?????????ò?? 1.4 ±??°???ù ?±?¨?????????????¤?±?????????ò???·?????ù?? 2 ???????·?¨ 2. 1 ?ù?? ?? ???¨?è ???? ?á???? ?¨?? ·?°??? ???? ?????¤ ???? ?é???? ???? ?????· ?¨?¨ ?????¤?? ??±?????????????????±í??±ê??±??????????ù???????ò???????à???? 2. 2 ?ù??±? ???¨?????¤???????¨??×÷??·????????????????·?¨???ù?????¨???ò???ò??·????? ?????¨?????¤????±??????????????????¨?????ò???ò×??ü????×÷???????? ?????????¨????·??????????????????¨?????¤???????????±???????????? 3 ???????? 3.1 ???????÷ ???????÷????·??ù??????????????????·??? GB 37 85 ???ù?? ?????????ù?????°????·?·¨?·?? ???ò?????÷?????ó?????????°?ó???????????ù??????????×??? ?????????? ?????????? ?·?????ù×? ???à?????? ?????÷???? ??·??§???? ???? 50 dB ?? ??±??¤ ?? ????????×??·???? 3.2 ???ù?÷?è?? ?????±?ù?????ò???ù?÷???????????????????¨???????????????ù?÷?????à?????? 1.2m ??±? ×???×????¨?è???????í×??????????? 1 ????????????????±????????§???????????ó?à??·??§?????????ù?÷???? 1.2m ???? ???????? ??????????±¨????????×??÷?? 3.3 ???ó?????? ?????????????ê???????????ò?±???????±·??????? 1m/s ? ?????ó???????±??·?·???????·? ?????? 5m/s ?±?????????????? 3.4 ?????±?? ·?????????????????·????±??????·??????±???????????·?¨?? 4 ???????????¨?? ?????????????§???? A?ù?? Leq???????? dB(A) ?? ???§?????ù???ú±í?ù???????????ù?????????±??±??????ù?????????????ù???? °??¨?????????? Leq=10lg*[ 1/T ?? r010 0.1LA(t)dt ] ............... (1) ???????? LA(t) ???????????±?? t?????± A?ù???? dB ?? ?? T???????¨???????±???? s?? ?±?????????ù???????????ù???±?????????¨?±???? (1) ??±í?????? Leq =10lg*[ 1/n ?? ni=110 0.1Li ] ...............(2) ?????? n?????ù???¨???±?? T?????ù??×????? ?? Li ?????? i???????? A?ù???? dB ?? 5 ????·?·¨ 5. 1 ?ù???? 2????·?·¨?? ???¤?????????§?·???????????? ?·?¨???ù???????? ??????????·??? ±????? 3???????????¨?? 5. 2 ?????· ?????ù×????à?????????????±?? ???÷?????????? ?°?ì?± ?ì?? ?????ù?±?????????ó ?? 1s ??°× ?ì ?? 20 mi n???? Ч A?ù?? ±í?÷?????????????ù???? ?????? 8h ?????ù???§ A?ù??±í ?÷???????????ù???? 5. 3 ?????? ???? ?÷???¤?ú????????????????×????? ????°ü?¨?????????ò???????????????? ?? ???? ?¨???? ? ?¤?ú???????? ??°è?ú (?? )???? ???°?????¤????????×????????? ?????????????¤ ????·??§???????¨?????¤?????? 5. 4 ±??°?? ?ù??±????????ù?? 10d B( A) ???????? ????????±??°???ù???à?????? 10d B( A) ??°? ??±í?????? ×???×????¨?è???????í×??????????? 2 dB ???? 3 4?? 5 6?? 9 ?????? -3 -2 -1 6 ????±¨?? ????±¨??????°ü?¨?????????? a. ?¨?????¤?????°±????????????? b. ?????¨??????·??????à???°?à??±????????????? c. ?÷?????????§???? A?ù?? Leq?? ???? A ????????±í (?????? ) ?¨?????¤???????ù????????±í ?ê ?? ?? ?¤?????? ?? ?? ? ·? ?? ? ·? ???????÷???? ???ó???? ?????? ?? ?? ???§???? A?ù?? ?¨?????¤???????????¨?????¤?????°??±??????????????? ±? ? ???????÷?? ±?±ê×????ú???·??±??¤???á???? ±?±ê×??÷???????????????????ê?????ì?????????í?????????? ±?±ê×????ú???·??±??¤???????????? ×???×????¨?è???????í×??????????? 3