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1 Analyse av transmisjonsveier og refleksjoner for veitrafikkstøy i et byområde Jens Holger Rindel og Clas Ola Høsøien Multiconsult NAS Høstmøte 2012 Stavanger

Analyse av transmisjonsveier og refleksjoner for veitrafikkstøy …norskakustiskselskap.org/uploads/hostmote/2012/fredag4/3...NAS Høstmøte 2012 Stavanger 2 Grefsen, Oslo 3 Boligområde,

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  • 1

    Analyse av transmisjonsveier og refleksjoner

    for veitrafikkstøy i et byområde

    Jens Holger Rindel og Clas Ola Høsøien

    Multiconsult

    NAS Høstmøte 2012

    Stavanger

  • 2

    Grefsen, Oslo

  • 3

    Boligområde, som skal analyseres for endring av trafikkstøy

    Nye bygg

  • 4

    Modellering av bygninger

    Bygninger eksportert fra CadnA som dxf fil.

    Antall punkter: 33605

    Antall flater: 17265

  • 5

    Modellering av terreng

    Høyde-koter i 25 m grid (4 m over terreng)

    : Terrain

    NumbOffSet 100000

    MTranslate -599072.77 -6646586.16 -4

    Const z 115.0

    Pt 1 599189.53 6645916.75 95.58

    Pt 2 599189.53 6645941.75 97.08

    Pt 3 599189.53 6645966.75 97.58

    .

    .

    Pt 2392 600214.53 6647266.75 186.60

    Pt 2393 600214.53 6647291.75 189.00

    Pt 2394 600214.53 6647316.75 190.30

    BlockEnd

    X y z

  • 6

    Modellering av terræn

    Algoritme til å danne trekanter mellom gridpunkter:

    Layer "#4" Green

    Const Nx 42

    Const Ny 57

    For j 0 Nx-2

    For i 1 Ny-1

    Surf i+j*Ny Terrain

    i+j*Ny i+j*Ny+1 i+(j+1)*Ny

    Surf 3000+i+j*Ny Terrain

    i+j*Ny+1 i+(j+1)*Ny i+1+(j+1)*Ny

    end

    end

    1

    2

    3

    58

    59

    115

    116

    4

    6

    5

  • 7

    11 linjekilder, 7 mottaker punkter 0 200 400 600 800 1000 1200 1400 metres

    0

    200

    400

    600

    800 metres

    L1

    L2

    L3

    L4

    L5

    L6

    L7

    L8

    L9

    L10

    L11

    L12

    L13

    L14

    L15

    L16

    L17

    L18

    1

    2

    3

    4

    5

    6

    7

    Odeon©1985-2011 Licensed to: Odeon A/S

  • 8

    Veitrafikk støydata, LA,eq,10 m

  • 9

    Trafikkstøy spektrum

    Ref.: NORDTEST ACOU 061 (1987), Spektrum A1: Veitrafikk, By, 50 km/h

    Sammen spektrum brukes i: Byggforsk Håndbok 47 (1999) og ISO 717-1

    1/3 octave band

  • 10

    Trafikkstøy kilde i

    ODEON

    Kilde spektrum i 1/1

    oktavbånd til ODEON

    beregninger.

    Da 8 kHz ikke er med i

    referanse spektret, er denne

    verdi estimert ved

    ekstrapolasjon.

  • 11

    Test av linje- og punktkilde modell

    L1

    P2P3P4P5P6P7P8P9P10P11P12P13P14P15P16P17P18P19P20P21P22P23P24P25P26

    P27P28

    P29P30

    P31P32

    P33P34

    P35P36

    P37P38

    P39P40

    11 21 31 41 51

    Odeon©1985-2011 Licensed to: MULTICONSULT AS, Norway

    400 m lang kilde i fritt lydfelt. Mottagere i avstand 10, 20, 30, 40 og 50 m.

    • Linjekilde eller

    • 40 Punktkilder med 10 m avstand

    • 300 Punktkilder med 1 m avstand

  • 12

    Trafikkstøy kilder i ODEON

    Octave band spectrum, dB

    Freq. (Hz) 63 125 250 500 1000 2000 4000 8000

    Line source 21,8 15,5 12,1 9,6 9,7 6 1,1 -5

    Point sources, 10 m dist. 32,8 26,5 23,1 20,6 20,7 17 12,1 6

    Eq. Verdier for veitrafikk spektrum.

    LA,eq,10m = Overall Gain (dB/m) for linjekilde

    LA,eq,10m = Overall Gain (dB) for punktkilder med 10 m intervall

  • 13

    Linjekilde, LA,eq,10m = 70 dB

  • 14

    Punktkilde pr. 10 m, LA,eq,10m = 81,1 dB

  • 15

    Lydkilde modellert som punktkilder med 10 m

    interval, 0,5 m over bakken

  • 16

    292 point sources, 8 line sources

    0 200 400 600 800 1000 1200 metres

    0

    200

    400

    600 metres

    L2

    L6

    L11

    L14

    L15

    L16

    L17

    L18

    P19P20P21P22P23P24P25P26P27P28P29P30P31P32P33P34P35P36P37P38P39P40P41P42P43P44P45P46P47P48P49P50P51P52P53P54P55P56P57P58P59P60P61P62P63P64P65P66P67P68P69P70P71P72P73P74P75P76P77P78P79P80P81P82P83P84P85P86P87P88P89P90P91P92P93P94P95P96P97P98P99P100P101P102P103P104P105P106P107P108P109P110P111P112P113P114P115P116P117P118P119P120P121P122P123P124P125P126P127P128P129P130P131P132P133P134P135P136P137P138P139P140P141P142P143

    P144P145P146P147

    P148P149P150P151

    P152P153P154P155

    P156P157P158P159

    P160P161P162P163

    P164P165P166P167

    P168P169P170P171

    P172P173P174

    P175

    P176P177P178P179P180P181P182P183P184P185P186P187P188

    P189P190P191P192P193P194P195P196P197P198P199P200P201P202P203P204P205P206P207P208P209P210P211P212P213P214P215P216P217P218P219P220P221

    P222P223P224P225P226P227P228P229P230P231P232P233P234P235P236P237P238P239P240P241P242P243P244P245P246P247P248P249P250P251P252P253P254P255P256P257P258P259P260P261P262

    P263P264P265P266

    P267P268P269P270

    P271P272P273P274

    P275P276P277P278

    P279P280P281P282

    P283P284P285P286

    P287P288P289P290

    P291P292P293P294

    P295P296P297P298

    P299P300

    Odeon©1985-2011 Licensed to: Odeon A/S

  • 17

    Eksist. bygg

    Odeon©1985-2011 Licensed to: Odeon A/S

  • 18

    Alle bygg

    Odeon©1985-2011 Licensed to: Odeon A/S

  • 19

    Eksist. Bygg, mottakere 4 m over bakken

    67,3

    64,3

    61,3

    58,3

    55,3

    52,3

    49,3

    46,3

    43,3

    40,3

    37,3

    34,3

    31,3

    28,3

    25,3

    SPL(A) (dB) >= 72,5

  • 20

    Alle bygg, mottakere 4 m over bakken

    67,3

    64,3

    61,3

    58,3

    55,3

    52,3

    49,3

    46,3

    43,3

    40,3

    37,3

    34,3

    31,3

    28,3

    25,3

    SPL(A) (dB) >= 72,5

  • 21

    Eksist. bygg, LAeq,50 = 54 dB Cumulative distribution function (1331 of 1349 receivers included)

    X(5,95) = (31,3, 73,4) X(10,90) = (40,6, 68,3) X(25,75) = (47,1, 63,4) X(50) = (54,1)

    X(95)-X(5) = 42,0 X(90)-X(10) = 27,8 X(75)-X(25) = 16,3

    SPL(A) (dB)

    727068666462605856545250484644424038363432

    Perc

    ent

    95

    90

    85

    80

    75

    70

    65

    60

    55

    50

    45

    40

    35

    30

    25

    20

    15

    10

    5

    Odeon©1985-2011 Licensed to: Odeon A/S

  • 22

    Alle bygg, LAeq,50 = 55 dB Cumulative distribution function (1331 of 1349 receivers included)

    X(5,95) = (32,3, 73,4) X(10,90) = (42,1, 68,6) X(25,75) = (49,5, 63,6) X(50) = (55,1)

    X(95)-X(5) = 41,2 X(90)-X(10) = 26,5 X(75)-X(25) = 14,2

    SPL(A) (dB)

    727068666462605856545250484644424038363432

    Perc

    ent

    95

    90

    85

    80

    75

    70

    65

    60

    55

    50

    45

    40

    35

    30

    25

    20

    15

    10

    5

    Odeon©1985-2011 Licensed to: Odeon A/S

  • 23

    Alle bygg – 10 m grid – 5 dB trin i fargeskala

  • 24

    Eksist. bygg. – Pos. R1 0 25 50 75 100 125 150 175 200 225 250 275 300 325 350 375 400 metres

    0

    25

    50

    75

    100

    125

    150

    175

    200

    225

    250 metres

    P2 P3 P4 P5 P6 P7 P8 P9 P10 P11 P12 P13 P14 P15 P16 P17 P18 P19 P20 P21 P22 P23 P24 P25 P26 P27 P28 P29 P30 P31 P32 P33 P34 P35 P36 P37 P38 P39 P40 P41 P42 P43 P44 P45 P46 P47 P48 P49 P50 P51 P52 P53 P54 P55 P56 P57 P58 P59 P60 P61 P62 P63 P64 P65 P66 P67 P68 P69 P70 P71 P72 P73 P74 P75 P76

    1

    Source: 76Surface: *Receiver*Refl.: 1Path : 610.49Time : 1779Odeon©1985-2011 Licensed to: Odeon A/S Restricted version - research and teaching only!

    Diffraksjon fra punktkilder over

    en eller to kanter inkludert

  • 25

    Alle bygg. – Pos. R1 0 25 50 75 100 125 150 175 200 225 250 275 300 325 350 375 400 metres

    0

    25

    50

    75

    100

    125

    150

    175

    200

    225

    250 metres

    P2 P3 P4 P5 P6 P7 P8 P9 P10 P11 P12 P13 P14 P15 P16 P17 P18 P19 P20 P21 P22 P23 P24 P25 P26 P27 P28 P29 P30 P31 P32 P33 P34 P35 P36 P37 P38 P39 P40 P41 P42 P43 P44 P45 P46 P47 P48 P49 P50 P51 P52 P53 P54 P55 P56 P57 P58 P59 P60 P61 P62 P63 P64 P65 P66 P67 P68 P69 P70 P71 P72 P73 P74 P75 P76

    1

    Source: 29Surface: *Receiver*Refl.: 1Path : 456,97Time : 1331Odeon©1985-2011 Licensed to: Odeon A/S Restricted version - research and teaching only!

    Diffraksjon fra punktkilder over

    en eller to kanter inkludert

  • 26

    Pos. 3

  • 27

    Pos. R3

    Reflectogram

    Arrival time: 268,29 ms (0,00 ms rel. direct or f irst reflection)

    Level of: 36,09 dB (0,00 dB rel. direct)

    Azimuth angle: 164,18°, elevation angle: 0,34°

    Reflection: 0. order, 1. reflection of 140, source:224

    time (seconds rel. direct sound)

    3,83,63,43,232,82,62,42,221,81,61,41,210,80,60,40,20

    SP

    L (

    dB

    )

    35

    30

    25

    20

    15

    10

    5

    0

    -5

    -10

    -15

    -20

    Elevation

    20

    0

    -20

    20

    0

    -20

    20 0 -20

    200-20

    Azimuth

    20

    0

    -20

    20

    0

    -20

    20 0 -20

    200-20

    Frequency (Hz)

    63 250 1000 8000

    45

    40

    35

    30

    Odeon©1985-2011 Licensed to: Odeon A/S

    Reflectogram

    Arrival time: 268,29 ms (0,00 ms rel. direct or f irst reflection)

    Level of: 36,09 dB (0,00 dB rel. direct)

    Azimuth angle: 164,18°, elevation angle: 0,34°

    Reflection: 0. order, 1. reflection of 306, source:224

    time (seconds rel. direct sound)

    43,532,521,510,50

    SP

    L (

    dB

    )

    35

    30

    25

    20

    15

    10

    5

    0

    -5

    -10

    -15

    -20

    Elevation

    20

    0

    -20

    20

    0

    -20

    20 0 -20

    200-20

    Azimuth

    20

    0

    -20

    20

    0

    -20

    20 0 -20

    200-20

    Frequency (Hz)

    63 250 1000 8000

    45

    40

    35

    30

    Odeon©1985-2011 Licensed to: Odeon A/S

    L2

    L6

    L11

    L14

    L15

    L16

    L17

    L18

    P19P20P21P22P23P24P25P26P27P28P29P30P31P32P33P34P35P36P37P38P39P40P41P42P43P44P45P46P47P48P49P50P51P52P53P54P55P56P57P58P59P60P61P62P63P64P65P66P67P68P69P70P71P72P73P74P75P76P77P78P79P80P81P82P83P84P85P86P87P88P89P90P91P92P93P94P95P96P97P98P99P100P101P102P103P104P105P106P107P108P109P110P111P112P113P114P115P116P117P118P119P120P121P122P123P124P125P126P127P128P129P130P131P132P133P134P135P136P137P138P139P140P141P142P143

    P144P145P146P147P148

    P149P150P151

    P152P153P154P155

    P156P157P158P159

    P160P161

    P162P163

    P164P165

    P166P167

    P168P169

    P170P171

    P172P173

    P174

    P175

    P176P177P178P179P180P181P182P183P184P185P186P187P188

    P189P190P191P192P193P194P195P196P197P198P199P200P201P202P203P204P205P206P207P208P209P210P211P212P213P214P215P216P217P218P219P220P221

    P222P223

    P224P225

    P226P227

    P228P229

    P230P231

    P232P233P234

    P235P236

    P237P238

    P239P240

    P241P242

    P243P244

    P245P246P247P248

    P249P250P251P252

    P253P254P255P256

    P257P258P259

    P260P261P262

    P263P264P265P266P267P268P269P270P271P272P273P274P275P276P277P278P279P280P281P282P283P284P285P286P287P288P289P290P291P292P293P294P295P296P297P298P299P300

    3

    Source: 180Surface: *Receiver*Refl.: 1Path : 773,44Time : 2254Odeon©1985-2011 Licensed to: Odeon A/S

    L2

    L6

    L11

    L14

    L15

    L16

    L17

    L18

    P19P20P21P22P23P24P25P26P27P28P29P30P31P32P33P34P35P36P37P38P39P40P41P42P43P44P45P46P47P48P49P50P51P52P53P54P55P56P57P58P59P60P61P62P63P64P65P66P67P68P69P70P71P72P73P74P75P76P77P78P79P80P81P82P83P84P85P86P87P88P89P90P91P92P93P94P95P96P97P98P99P100P101P102P103P104P105P106P107P108P109P110P111P112P113P114P115P116P117P118P119P120P121P122P123P124P125P126P127P128P129P130P131P132P133P134P135P136P137P138P139P140P141P142P143

    P144P145P146P147P148

    P149P150P151

    P152P153P154P155

    P156P157P158P159

    P160P161

    P162P163

    P164P165

    P166P167

    P168P169

    P170P171

    P172P173

    P174

    P175

    P176P177P178P179P180P181P182P183P184P185P186P187P188

    P189P190P191P192P193P194P195P196P197P198P199P200P201P202P203P204P205P206P207P208P209P210P211P212P213P214P215P216P217P218P219P220P221

    P222P223

    P224P225

    P226P227

    P228P229

    P230P231

    P232P233P234

    P235P236

    P237P238

    P239P240

    P241P242

    P243P244

    P245P246P247P248

    P249P250P251P252

    P253P254P255P256

    P257P258P259

    P260P261P262

    P263P264P265P266P267P268P269P270P271P272P273P274P275P276P277P278P279P280P281P282P283P284P285P286P287P288P289P290P291P292P293P294P295P296P297P298P299P300

    3

    Source: 175Surface: *Receiver*Refl.: 2Path : 790,81Time : 2304Odeon©1985-2011 Licensed to: Odeon A/S

  • 28

    Eksist. bygg. – Pos. R3

    0 100 200 300 400 500 600 700 800 metres

    0

    100

    200

    300

    400 metres

    L2

    L6

    L11

    L14

    L15

    L16

    L17

    L18

    P19P20P21P22P23P24P25P26

    P27P28P29P30P31P32P33

    P34P35P36P37P38P39P40P41

    P42P43P44P45P46P47P48

    P49P50P51P52P53P54P55P56

    P57P58P59P60P61P62P63P64

    P65P66P67P68P69P70P71

    P72P73P74P75P76P77P78P79

    P80P81P82P83P84P85P86P87

    P88P89P90P91P92P93P94P95

    P96P97P98P99P100P101P102P103

    P104P105P106P107P108P109P110P111

    P112P113P114P115P116P117P118P119

    P120P121P122P123P124P125P126P127

    P128P129P130P131P132P133P134P135

    P136P137P138P139P140P141P142P143

    P144P145P146P147P148P149P150P151P152P153P154P155P156P157P158P159P160P161P162P163P164P165P166P167P168P169P170P171P172P173P174

    P175

    P176P177P178P179P180P181P182P183P184P185P186P187P188

    P189P190P191P192P193P194P195P196P197P198P199P200P201P202P203P204P205P206P207P208P209P210P211P212P213P214P215P216P217P218P219P220P221

    P222P223P224P225

    P226P227P228P229

    P230P231P232P233

    P234P235P236P237

    P238P239P240P241

    P242P243P244P245

    P246P247P248P249

    P250P251P252P253

    P254P255P256P257

    P258P259P260P261

    P262

    P263P264P265P266P267P268P269P270P271P272P273P274P275P276P277P278P279P280P281P282P283P284P285P286P287P288P289P290P291P292P293P294P295P296P297P298P299P300

    3

    Source: 180Surface: *Receiver*Refl.: 1Path : 773,44Time : 2254Odeon©1985-2011 Licensed to: Odeon A/S

    Refleksjoner mellom 1 og 2 sek.

  • 29

    Alle bygg. – Pos. R3

    0 100 200 300 400 500 600 700 800 metres

    0

    100

    200

    300

    400 metres

    L2

    L6

    L11

    L14

    L15

    L16

    L17

    L18

    P19P20P21P22P23P24P25P26

    P27P28P29P30P31P32P33

    P34P35P36P37P38P39P40P41

    P42P43P44P45P46P47P48

    P49P50P51P52P53P54P55P56

    P57P58P59P60P61P62P63P64

    P65P66P67P68P69P70P71

    P72P73P74P75P76P77P78P79

    P80P81P82P83P84P85P86P87

    P88P89P90P91P92P93P94P95

    P96P97P98P99P100P101P102P103

    P104P105P106P107P108P109P110P111

    P112P113P114P115P116P117P118P119

    P120P121P122P123P124P125P126P127

    P128P129P130P131P132P133P134P135

    P136P137P138P139P140P141P142P143

    P144P145P146P147P148P149P150P151P152P153P154P155P156P157P158P159P160P161P162P163P164P165P166P167P168P169P170P171P172P173P174

    P175

    P176P177P178P179P180P181P182P183P184P185P186P187P188

    P189P190P191P192P193P194P195P196P197P198P199P200P201P202P203P204P205P206P207P208P209P210P211P212P213P214P215P216P217P218P219P220P221

    P222P223P224P225

    P226P227P228P229

    P230P231P232P233

    P234P235P236P237

    P238P239P240P241

    P242P243P244P245

    P246P247P248P249

    P250P251P252P253

    P254P255P256P257

    P258P259P260P261

    P262

    P263P264P265P266P267P268P269P270P271P272P273P274P275P276P277P278P279P280P281P282P283P284P285P286P287P288P289P290P291P292P293P294P295P296P297P298P299P300

    3

    Source: 175Surface: *Receiver*Refl.: 2Path : 790,81Time : 2304Odeon©1985-2011 Licensed to: Odeon A/S

    Refleksjoner mellom 1 og 2 sek.

  • 30

    Eksist. bygg. – Pos. R3

    0 100 200 300 400 500 600 700 800 metres

    0

    100

    200

    300

    400 metres

    L2

    L6

    L11

    L14

    L15

    L16

    L17

    L18

    P19P20P21P22P23P24P25P26

    P27P28P29P30P31P32P33

    P34P35P36P37P38P39P40P41

    P42P43P44P45P46P47P48

    P49P50P51P52P53P54P55P56

    P57P58P59P60P61P62P63P64

    P65P66P67P68P69P70P71

    P72P73P74P75P76P77P78P79

    P80P81P82P83P84P85P86P87

    P88P89P90P91P92P93P94P95

    P96P97P98P99P100P101P102P103

    P104P105P106P107P108P109P110P111

    P112P113P114P115P116P117P118P119

    P120P121P122P123P124P125P126P127

    P128P129P130P131P132P133P134P135

    P136P137P138P139P140P141P142P143

    P144P145P146P147P148P149P150P151P152P153P154P155P156P157P158P159P160P161P162P163P164P165P166P167P168P169P170P171P172P173P174

    P175

    P176P177P178P179P180P181P182P183P184P185P186P187P188

    P189P190P191P192P193P194P195P196P197P198P199P200P201P202P203P204P205P206P207P208P209P210P211P212P213P214P215P216P217P218P219P220P221

    P222P223P224P225

    P226P227P228P229

    P230P231P232P233

    P234P235P236P237

    P238P239P240P241

    P242P243P244P245

    P246P247P248P249

    P250P251P252P253

    P254P255P256P257

    P258P259P260P261

    P262

    P263P264P265P266P267P268P269P270P271P272P273P274P275P276P277P278P279P280P281P282P283P284P285P286P287P288P289P290P291P292P293P294P295P296P297P298P299P300

    3

    Source: 226Surface: *Receiver*Refl.: 3Path : 1399,60Time : 4078Odeon©1985-2011 Licensed to: Odeon A/S

    Alle refleksjoner opp til 3. orden

  • 31

    Alle bygg. – Pos. R3

    0 100 200 300 400 500 600 700 800 metres

    0

    100

    200

    300

    400 metres

    L2

    L6

    L11

    L14

    L15

    L16

    L17

    L18

    P19P20P21P22P23P24P25P26

    P27P28P29P30P31P32P33

    P34P35P36P37P38P39P40P41

    P42P43P44P45P46P47P48

    P49P50P51P52P53P54P55P56

    P57P58P59P60P61P62P63P64

    P65P66P67P68P69P70P71

    P72P73P74P75P76P77P78P79

    P80P81P82P83P84P85P86P87

    P88P89P90P91P92P93P94P95

    P96P97P98P99P100P101P102P103

    P104P105P106P107P108P109P110P111

    P112P113P114P115P116P117P118P119

    P120P121P122P123P124P125P126P127

    P128P129P130P131P132P133P134P135

    P136P137P138P139P140P141P142P143

    P144P145P146P147P148P149P150P151P152P153P154P155P156P157P158P159P160P161P162P163P164P165P166P167P168P169P170P171P172P173P174

    P175

    P176P177P178P179P180P181P182P183P184P185P186P187P188

    P189P190P191P192P193P194P195P196P197P198P199P200P201P202P203P204P205P206P207P208P209P210P211P212P213P214P215P216P217P218P219P220P221

    P222P223P224P225

    P226P227P228P229

    P230P231P232P233

    P234P235P236P237

    P238P239P240P241

    P242P243P244P245

    P246P247P248P249

    P250P251P252P253

    P254P255P256P257

    P258P259P260P261

    P262

    P263P264P265P266P267P268P269P270P271P272P273P274P275P276P277P278P279P280P281P282P283P284P285P286P287P288P289P290P291P292P293P294P295P296P297P298P299P300

    3

    Source: 137Surface: *Receiver*Refl.: 3Path : 1504,94Time : 4385Odeon©1985-2011 Licensed to: Odeon A/S

    Alle refleksjoner opp til 3. orden

  • 32

    Left ear

    time (seconds incl. f ilter delay)

    2,42,221,81,61,41,210,80,60,40,2

    p (

    %)

    100

    80

    60

    40

    20

    0

    -20

    -40

    -60

    -80

    -100

    Right ear

    time (seconds incl. f ilter delay)

    2,42,221,81,61,41,210,80,60,40,2

    p (

    %)

    100

    80

    60

    40

    20

    0

    -20

    -40

    -60

    -80

    -100

    Odeon©1985-2011 Licensed to: Odeon A/S

    Left ear

    time (seconds incl. f ilter delay)

    2,42,221,81,61,41,210,80,60,40,2

    p (

    %)

    100

    80

    60

    40

    20

    0

    -20

    -40

    -60

    -80

    -100

    Right ear

    time (seconds incl. f ilter delay)

    2,42,221,81,61,41,210,80,60,40,2

    p (

    %)

    100

    80

    60

    40

    20

    0

    -20

    -40

    -60

    -80

    -100

    Odeon©1985-2011 Licensed to: Odeon A/S

    Pos. R3

    Eksist. Bygg. 51,7 dB(A)

    Alle Bygg. 56,7 dB(A)

    Refleksioner fra nye bygg

    Gir tillegg på 5,0 dB

  • 33

    Pos. 8

  • 34

    Pos. 8

    Eksist. bygg

    Alle bygg

  • 35

    Alle bygg - Pos. 8

    Refleksjoner mellom 0,8 og 1,1 sek.

  • 36

    Alle bygg - Pos. 8

    Refleksjoner mellom 1,1 og 1,4 sek.

  • 37

    Eksist. Bygg. 59,1 dB(A)

    Alle Bygg. 61,7 dB(A)

    Refleksjoner fra nye bygg

    Gir tillegg på 2,6 dB

    Pos. R8

  • 38

    7 mottaker punkter (100 m interval)

  • 39

    Sammenligning med CadnA

    7 mottaker punkter

  • 40

    Sammenligning med CadnA

    7 mottaker punkter

  • 41

    Nord2000 Road (2006)

    Lydutbredelse og meteorologiske forhold

  • 42

    Konklusjon

    Det er mulig at anvende ODEON til beregning av

    veitrafikkstøy i byområder, hvor der er mange

    refleksjoner

    Som støykilder kan anvendes linjekilder eller rekker av

    punktkilder med fx. 10 m avstand

    Kildespektrum for bytrafikk etter NORDTEST

    Overall gain settes lik LA,eq,10 m for hver veistrekning

    God overensstemmelse med CadnA i avstander ca.

    200 - 500 m.

    Manglende krumme lydbaner medfører for høye

    støynivåer i avstander over ca. 500 m