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¡ʿD푘(l )d•(chng)ģM

(li)ԴϾh(hun)Ƽ޹˾ r(sh)g2019-02-14 c(din)


   ʿD푘(l )dλR_TݲʿDЃ190010151999걻ָćҚvʷؘҲDzʿDĘ־Խr(sh)R\•W(xu)ԭָ(l )dOӋƸՈW(xu)W(xu)e•W(xu)(wn)ʿD푘(l )d\ìF•W(xu)ԭOӋ(l )d•W(xu)vʿD푘(l )d(l )d֮һõ(l )dҲܵA֮_(ki)^֮@푘(l )dЧVٝu(y)u(y)郞(yu)(dng) (tng)Ĺŵ(l )(hu )(chng)^֮һĿǰDzʿD푘(l )FcʿDИ(l )Fv
ʿD푘(l )dԵڶбRa(l )dԭͽcķ˹ص(l )d;SҲ{ɫdһΞML(chng)ġЬСҊ(jin)D1̤뽻푘(l )dȱ(hu )bһ僽L(fng)ܵĹL(fng)٣4 800ܣ_ͬȵĻɫSɫ僽_ڰtɫ_ɫκͼtɫĵ̺Ԫʹd19o~ĽL(fng)16ϣD_RƷڴdĉӡCʿDV֪ġ޵ŵ䡱ķQ(chng)ֵ̖һ(l )d_睿(zh)ؐҵΨһһλһͬ⌢睿ڽ푘(l )d(l )
1 푘(l )dśr 푘(l )r(sh)ʿD푘(l )dݼ{2 625И(l )r(sh)ݼ{2 371e(hu )r(sh)ݼ{8 0 0 dL(chng)߷քe39 m22.9 m18.6 mwe18 750 m3ÿݷe7.14 m3/ bεĵذe1 056 O푘(l )r(sh)ÿ(g)ռe0.40 O/ 2 •(chng)ģM 2.1 ʴ_SӋCģ ӋCģMܛODEON汾14.00Combinedܜʴ_ҳʿD푘(l )dwă(yu)PڵĈF꠱MܵذѸ(g)Ҫwڵ̫sͨ^(gu)ߵĔUɢϵ(li)_•W(xu)ҪMpٌ|(zh)ģMȵӰD6͈D7鲨ʿD푘(l )dӋCģ͈D4 977(g) 2.2 ӋCģMYR ʿD푘(l )dČ(sh)y^ȡ԰{(zh)ġ(l )d͸脡Ժڶ[2]]ֵM(jn)˱^ 2.3 •W(xu)IJɫW(wng)D ʿD푘(l )dӋCģM•W(xu)ɫW(wng)D 2.4 yc(din)ķ• •y܉ܺõطӳ(l )d|(zh)ЧD15D20г˳_ӘԼӘyc(din)ķ•У෴Δ4ķ•пԿķ•ӘٵǶӘӘ80 msԺķ•^
3 ʿD푘(l )d•(chng)c(din) (l )d•W(xu)ČҊ(jin)2пԿʿD푘(l )dcķ˹ص(l )dwஔȾSҲ{ɫdҎģҪһЩmȻʿD푘(l )dͰķ˹ص(l )dwஔʿD푘(l )dλs@Ȱķ˹ص(l )dλҪ 3.1 ^͵SM(mn)Ⱥ^ߵ ı2 Կ(l )dʿD푘(l )dM(mn)(chng)RT midEDT midСȾ]푸ʮ@•W(xu)Ұ{J飺ֻھSҲ{ɫdķ˹ص(l )d(l )dKĴ(l )dвʿD푘(l )dǷN_߷q^(gu)̺ͻ|(zh)ڴ (tng)(l )(sh)һNܡָ]ҿPڌʿD푘(l )dcSҲ{ɫdM(jn)б^r(sh)ʾܶ(l )ʿD푘(l )d푕r(sh)gԵ 3.2 ^͵^(gun)d푶lȺ^ߵ_•_ֶ֧ ^(gu)ȥL(chng)һΕr(sh)gһֱJdlcl֮țQdĵlо@ӵĹBeranek[4]J飺l125 HzGֵpȥl500 Hz1 kHzɂ(g)lGֵ֮G125CGlĵȣbass indexҪı3пԿ(l )dвʿD푘(l )do(w)ՓǿՈ(chng)߀ǝM(mn)(chng)GmidG125-GmidС푶ƫ͵ԭҪͬĿgȲ^^(gun)ϯ•^푶Ȼ͵lƫСԭ20%_•֞13 mm25 mmľģܶȱ^ɵl^ľʿD푘(l )ddΨһзָʽ_g(li)(l )•֣Ĵd_g^С](mi)һ(l )cָ]_֮gx9.2 mҪL(fng)²ĔUɢԌ•ܷ݆T•W(xu)yw1989Ͳ1994x(l )߅1 mĘ(l )l(f)•(jng)dĺ•ʿD푘(l )dȾSҲ{ɫd1 dBȰķ˹ص(l )d4 dB 3.3 ^õҕ•ԴȺ^͵ĭh(hun)@ gа•µҕ•ԴȣASWͻ•µĭh(hun)@УLEVı4Կ(l )dʿD푘(l )dҕ•ԴASW;SҲ{ɫdIJ^h(hun)@Ѕs(g)(l )dСh(hun)@УLEVǸ{˵ġ(l )d͸脡Ժڶ棩[2]LEVʽӋ](mi)ֱӲá(l )d•W(xu)|(zh)cdΠP(gun) Ьh(hun)@ȡ[5]Ĕһ`ҪԔLEVƫԭӋ㹫ʽ Ӌ㹫ʽпԿLEVcl푶pP(gun)P(gun)ı5Ӌ㔵Կ(l )dֵʿD푘(l )dGLateֵСֱӌ­h(hun)@УLEVҲС 3.4 õHи Hиоڴg (tng)(l )sСg^(gun)X(ju){ˌdλõijʼr(sh)g϶ITDGHиеdλöx_ǰغ͵һ_ڰ֮gİλãƫxS(xin)1 mĈD22λÜyc(din)ķ•пԿһη•(li)ԴڳĂȉҊ(jin)D23ITDG28 msȻϽ푘(l )d25 ms]ֵʿD푘(l )dѽ(jng)^խˣHs22.9 m(sh)yֵH15 ms•Q(chng)H0.015 m340 m/s=5.1 mӋͨ^(gu)_Ϙ(l )Vܻα巴ݳr(sh)_M(mn)ˆT(hu )ֻȫړα(l )Vʹ](mi)ړ•Ҳ(hu )S(zh)(l )꠵IJ÷ʽͬл](mi),ݳr(sh)(li)_Ϙ(l )Vܻαķ•ǿпɟo(w)ǂ(g)׃o(w)OӋڜyr(sh)hm{_Ϙ(l )VܻαĽǶĶ@ЩǷB(ti)ķ• 3.5 ĔUɢ HannFricke(jng)ͨ^(gu)P(gun)оó½YՓur(ji)郞(yu)cur(ji)ûеȵ(l )dUɢԳ̶ƺ@NeشԭһԔطʿD푘(l )dĔUɢ(g)픲M(mn)͹b(xin)l微𵽺ܺõĔUɢЧ_Uյ僽ٸţ͸ʼs50%𲻵ʲôUɢȉӘςȉĔUɢЧ^16ϣD_RƷډʹUɢЧOQRDUɢwUɢЧ^Ͷӵĉ^ƽUɢЧ_^ľ肰͹L(fng)ىİ͹׃ʹ_UɢЧdz_еf(shu)ʿD푘(l )d^(gun)d°ΔUɢϰΣ픲Uɢ ʿD푘(l )dȉes1 470 OͶӘ](mi)Uɢes460 OӘUɢĂȉe1 010 OȫUɢes1 100 OӘȉﶼǸߔUɢSDI=11 010+11 110/1 470+1 100=0.82{(zh)ġ(l )d͸脡Ժһ[1]͵ڶ[2]SҲ{ɫdSDI0.96ķ˹ص(l )dĔUɢԺ;SҲ{ɫdһӺSDIҲs0.96
4 w CʿD푘(l )d푕r(sh)g^mL(chng)һc(din)ҲS(hu )ãw(hu )ǷN_߷q^(gu)̺ͻ|(zh)^ɴ(l )dʿD푘(l )d^(gun)d푶ƫlҲ_^ʘ(l )ΠˆT_ֶ֧Ⱥܺ_•Hиб^ڿgзʿD푘(l )dкܺõҕ•Դh(hun)@Л](mi)ɴ피(l )d@ā(li)f(shu)ʿD푘(l )ddzmŵ(l )(hu )
2017616PڲʿD푘(l )d^(gu)һ(chng)ݳݳ漰~˹ٷҡɣºķƽBƷн푘(l )ҲЪ߀ʹÔU•ϵyĂ(g)ƽB푘(l )dϲϹҒ9Kɫzq•Ļ^(gun)M(mn)ӋM(mn)(chng)푕r(sh)g1.6 s1.7 s푘(l )r(sh)•ЧʮSM(mn)](mi)еǷN_߷q^(gu)̺ͻ|(zh)ʹÔU•ϵyZ(y)ԽB (tng)(li)^ҾһSM(mn)ȺSM(mn)ȵ

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