ICS 07.060 A 47 DB46 DB 46/ T 469—2018 Data processing norms of meteorological conditions assessment for major construction projects 2018 - 10 - 23 2018 - 12 - 01 DB46/T 469—2018 GB/T1.1-2009 I DB46/T 469—2018 1 2 DL/T5252-2010 QX/T 22-2004 QX/T 45-2007 30 3 3.1 reference stations 3.2 the distance between the reference stations 3.3 typical months 10 3.4 recurrence period 1 DB46/T 469—2018 4 30 1 km >15 5 15 <5 5 5.1 QX/T 45-2007 5.2 5.2.1 QX/T 45-2007 5.2.2 5° 500m 5.2.3 5° 5° 5.2.4 5km 5.3 02:00 05:00 08:00 11:00 14:00 17:00 20:00 23:00 2 DB46/T 469—2018 5.4 10m 5.5 5.6 DL/T 5252-2010 6 6.1 a) b) c) d) e) f) g) h) 6.2 a) b) c) 6.3 a) b) c) 6.4 a) 3 DB46/T 469—2018 b) c) 15 QX/T45-2007 d) 7 7.1 a) b) c) d) 7.2 7.2.1 QX/T 22-2004 7.2.2 7.2.3 7.2.3.1 7.2.3.1.1 7.2.3.1.2 III 7.2.3.2 7.2.3.2.1 7.2.3.2.2 III -1 7.2.3.3 7.2.3.3.1 4 DB46/T 469—2018 a) b) 10 10 c) 10 d) 7.2.3.3.2 10m V V1 V V1 Z1 Z0 z z0 z ln 1 z0 ln Z=10m Z1 7.2.3.3.3 a) b) 10 c) a=0.05 10 7.2.3.3.4 III 7.2.3.4 a) b) III 5 DB46/T 469—2018 AA A A.1 III P-III a f x a a a x 0, a 1 a0 x a0 e a a0 a 0 x Cs Cv a 4 Cs2 2 x C vC s a0 Cv Cs 2C v Cs x 1 1 1 x n x xi x i 1 n 1 n n xi 3 i 1 x 3 2 1 n 1 3 n Cv n Ki 1 2 i 1 n Ki 1 3 i 1 Cv 6 DB46/T 469—2018 Cv x Cs Cs 0(P Cs ) xp , P a p p x xp a x f p a 1 e x a0 dx xp xp p a0 P P Cs d p Cs x 0 Cs 1 Cs p x x xCv Cv p p p p x x x 1 Cv A.2 I Gumbe1 7 DB46/T 469—2018 F ( x) exp exp ax u a a 0, u y a u u R XR 1/R u 1 R ln a R 1 E ( x) 0.57722 y 2 : a u E ( x) 2 6a 2 1.28255 0.57722 a x1 x 2 F * xi i n 1 yi a u i 1,2, xn ,n 1n 1n(F * xi ) i 1,2, , n y (x) E x E ( y) a 8 DB46/T 469—2018 F' x f x a exp a x u exp a x u x1 , x2 , , xn n 1nl n1na n a xi u exp i 1 a a xi u i 1 u a u n n exp au exp ax i i 1 a n x u 1 exp a 1 x i exp au ax i i 1 9 DB46/T 469—2018 [1] [2] [3] [4] 2001. 2014. 2008. 2010. _________________________________ 10