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ͨLܵMΠȺо
ϢԴ“h   lrg2014-5-4   g[:

ͨLܵMΠȺо

    Lϵyǿ{ͨLҪһMɲͨrLܙMNΠ,AκͱA1960ǰˇ谲bg^С^󲿷ͨLϵyþLSALҲL͙CƳɹ̌CoՓڽ߀̅ALhھLČ@ЩоYMпYD^cڌLϵyĽԱ^ͬrͨr¸MռMñ^С@ֵMڱӑՓ

PI~ AL L L Ա^ Lϵy

1.

Lϵyǿ{ͨLҪһMɲĹҪnj{Ŀ՚ⰴOӋMܸЧʵĂ͵ĩOͨrLܙMNΠ,AκͱALܵͨͨ^ĉK䓰TӁAL܄tnjһʮߺ׌䓰͙C@ƶAL܄t^ҊһnjALMДDγ. 1960ǰˇ谲bg^С^󲿷ͨLϵyþLSAL͙ܳCƳɹ̌CoՓڽ߀̅ALܶhھLڇ؄eǚWLʹʶ׃ԽԽռҊһЇĿǰĈALʹñʓP߲{Hռٷ֮ʮٷ֮ʮ֮gЇ֮ŒALcLܵĹ̌оѳɞһ̲ݾn}

һL ALռЈ~

Ҽ؅^

1960

1965

1970

1975

1980

1985

1990

2000

W

5

15

40

60

70

80

85

90

‡

5

5

10

15

20

25

25

50

5

10

20

30

40

50

50

65

Ӣ

5

10

15

20

25

35

35

55


ĽĽǶȁvһȵLϵyʹÉеMÿɷ֞
1ͶYOӋMϼbMgM{ԇMȵ
2\MãˆTYԴSoM
3MãS޼QfM
оYScandiaconsult(1992), Bouwman(1992), Malmstrom et al (2001), Malmstrom et al (2002)TALϵyȾLϵyF郞Č@ЩоYMпYD^cڌLϵyĽԱ^ͬrͨr¸MռMñ^С@ֵMڱӑՓ

2 ͶY֣

ALϵyͶYȾLҪ͵IJԭ£

  • ALܸ\ݔ

  • ALܵĽMѱ߶Ș˜ʻ

  • ĽYvALܸܳ܉׃LҪ˨T֧ȼӏʩ

  • ͬˮֱALҪĽҪСھLLܵLԽtٺԽ

  • ALܵĵܘȾLܵİbͨLc{ʩҎGB502432002ͬrָL߅ߴ400mmľLܵg4mALgtL5m

  • yALܵLycСھLMLϵyƽr{ԇMҲСھL

  • AL@pٵl•҃˿Ԝp•O

Scandiaconsult(1992)һgͨLϵyքeÈALܺ;L˃ɂOӋ^ϵyĉp^PĽҊD1ע⣺ԮıWЈrMУӋYͬĩOlbMAL܃HLܵһͬrALܵIJMÞLܵ80%

ȫpʧPa: 150.0

ȫbMã0.51R

ȫMã0.8M

A

ȫpʧPa: 165.4

ȫbMãR

ȫMãM

B

D1Scandiaconsult(1992) LOӋ^ AAL BL


LϵyռgMнһ^y@ȡQڽĽY;һfþLܵҪһԭǾLܹsgHLȽӽľLܶռеČHeҪڈAL@ҪLҪm“Ym߅ĸ߶ͨ20mmҊD2AFLԁؘԒ“YҊD2B@NHҪgҸڰbˌLȽӽ1ľLALܵăcǟo

A

B

D2Scandiaconsult(1992) LBӷ^ AL BAL


LȵľLtԲÎ׸ALMҊD3@NʹLĿ׃øӺͬrbMҲpСmȻMÿܕJagemer1991һ{Yڴ˷ͶY~׺;Lһӵ


D3һ550mmX150mmľLܞD=200mmĈAL

3. \M

ͨr{ϵy\Mõ󲿷֞ԴԴMðӟs՚⼰@Щ՚͵ĩ˵OĵԴLϵyõM˱tL©LɞԴĵһҪԴ
LϵyLCѭhṩLCLһ㲻^650Paȥ՚̎CMĩOĉpʧLϵyõĉ^s200
300PaLϵyMдĉ^pʧͬr©LҲֱӰ푵LCĹxLCLCcLηL©Lʞ6%LCʌ20%ALܵ©LҪhhСھL

3.1
©L
Lܵ©LGʽMӋ㣺

1

fref= e©L
qvl= ©L

A= Lܱe

K= ©L

pref= Lcĉ
ښW©LLܵĚԱ֞ĂȼA,B,C,D2oȼS©L

Class A


KA=

0.02710-3 m3 s-1 m-2 Pa-0.65

Class B


KB=

0.00910-3 m3 s-1 m-2 Pa-0.65

Class C


KC=

0.00310-3 m3 s-1 m-2 Pa-0.65

Class D


KD =

0.00110-3 m3 s-1 m-2 Pa-0.65

2WLϵyԵȼ


cALLҪ˨cTBYҪö˲ɱ©LҲҪöD4rһMy@ʾLܵ©LƽȈALܸ7ͨLc{̎ʩҎGB50243-2002ҲָALܵS©LLܵ50


D4 21rL©LʵĜyCarri et al, 1999


3.2
^pʧ
ˮֱӱÁLܵɽypʧͬˮֱLMܙMΠͬȻͬس̉pʧD5^һΈALܣD=0.5m,U=5m/s,=0.15mmͬeľLܵĉpʧ@@NrLܵĉʧhhڈALSLLȵpʧҲԽҲζLCĹҲȻԽ


D5/پLcAL܉pʧ^=1 m3/s, v=5m/s


ˮֱĸǽؾL߅ƽБһµļOϵҲfپcL߅ƽnjHyYs@ʾھL،Ǿٶݶ˥pľٶݶ˥pՓˮֱЃɷNr‘֔

  • ̫С_ȫB

  • ܵMhxA^Lȵľ

򞔵ҲˮֱձԱʾˑJONES1976һϵеĹ⻬L܉pʧPߌČ򞔵M·ҊD6.10<L<25ĔD6ȻҰʾLȌˮֱpʧĆ{ӰGriggs et al(1992)ʹôֲھLČҲƵĽY


D6ͬLȵĹ⻬LcALܵĉpʧ^


3.3
SoM
˱ⲡBLҪM坍坍ɷʹmˢӣ񷨣ʹLϰѣ@ɷNrALܶȾLܸӺ

4.

LϵyĽԷһyĹҪ]NͬһLϵyĉпܕ^ʮ@NrһcСOӋ|ϵĸMпܼӴͶYӯ@cfALܑһ߽ԵĽQ
ҪָڰoͿgĿ]LϵyijЩPʹߴIJλLںͿ՚̎bóȻ]þL

Pc
“h
Sa
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