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- 湾 祁
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1 CECS 102:2002 Technical specification for steed structure of light-eight Buildings ith gabled frames
2 Technical specification for steed structure of light-eight Buildings ith gabled frames CECS102:
3 CECS 102: T [1986] CECS CECS102:
4
5
6 A B Z C D E F
7 t A1 A5 3t GB GB T50083 GB GB GB GB GB
8 2.1.1 opening opening building pariial1y enc1osed bulldinr enclosed building edge strip A A A end Zone A A effective ind 1oad area
9 F H M M M l f M M y0 N N E N 0 P P1 P f q y R u V Vd τ cr f f y fv f V A 9
10 a B bs d 0 d 1 e W e t H h h W h C he he1 h e2 I b I C I e I l I r L l fz S t W W We W el Wen Z K 10
11 K r Kσ β mx γ R λ P λ W µ γ ξ t ϕ b ϕ b γ 11
12 GB γ 0 γ 0 S R (3.1.3) S R GB S E R/ γ RE S E γ RE γ RE γ RE
13 GB GB ( ) 0.5KN/m 2 60m2 0.3KN m A GB GB
14 GB T 700 Q235 GB T 1591 Q345 2 Q235B Q345A Q235A 3 B C N/mm 2 f t mm f C f V f Q235 E Q345 E GB T 5293 GB/T GB f 14
15 8mm f C f t n/mm 2 C A B b f t f b V f b C f b t f Q235 Q345 b V Q235 Q A d 24mm l 10d l 50mm B d 24mm l>10d l 150mm d l 2 A B C GB f b C f a t f b t f b V f b C 15
16 4 GB GB mm GB C ) <20 = ) GB 500l7 16
17 / h h/60 h/100 h/400 h/ L/180 L/240 L/400 L/150 L/240 L/150 L/100 L/100 L/180 mm 1 L
18 mm 4mm 3mm 2 GB
19 a 4.1.2b 4.1.2c 4.1.2d 4.1.2e 4.1.2f H t 19
20 /8 1/ m mm 12m 6 9m m 20
21 m 150m
22 m 60m 3 60m t H O 60 O 45 O t
23 GB Hh µ = (2 + ξ t ) EI c µ t Hh 12EI c 3 + 2ξ 3 t = ξ = I L / hi c 6 + 2ξ b t h L 1:10 L I c 2s I b H
24 ξ t b I = ( I + I / I c0 I c 1 I c b ) c0 c1 = [ I b0 + βi b1 + (1 β ) I b2 ] / I I I b1 b H H=0.67W H=0.45W W = ω + )h ( 1 ω H H=1.15η P c H= η Pc W 24
25 ω kn m 1 ω 2 A P e L 2s I/2 H µ = K i K i 12EI ei = ( ) 3 h (2 + ξ ) i ti 25
26 I l ei i ξ ti = ( ) hi I bi I ei = I l + I 4 r + I l I l I r + I r i K i h li I ei I l I r I bi ξ ti
27 b t / f y h t / f f y y 2 h = ρh a e h c e h = ρh b c 3 3 λ p 0.8 = a 0.8 λ 1.2 =1-0.9( λ -0.8) b p p λ 1.2 = ( λ -1.2) c p p λ p 4 4 λ p = 28.1 h K σ / t 235 / f y K σ = ( ) 2 2 (1 + β ) (1 β ) + (1 + β ) 27
28 Kσ σ l f λ p γ Rσ l f y γ Q235 Q345 =1.1 γ h e 0 h h e1 e2 R 2 h /(5- ) a e b he h e 1 0 h h e1 e2 =0.4 h a e =0.6 h b e 6 60mm m V = h t f d v λ 0.8 f = f a V V 0.8 λ 1.4 f =[ λ -0.8 ] f ( b) V λ 1.4 f =( λ ) f ( c) V f V V h λ 7 f V a h 2 h 7 V R 28
29 = λ 37 K h τ / t 235 / f y a h l K =4+5.34(a/ h ) a h K =5.34+4(a/ h ) τ τ 2 2 ( a) ( a) K K =5.34 τ a V M V 0.5V d M M 0.5V V V d d e τ a V 2 M M f + ( M e M f )[1 ( 1) ] b 0.5V M f M d M e = A ( h + t f f f ) M W f e W e 29 e
30 A f Vd V M N V 0.5V d N e 0.5V V V d N M M e ( a) M = M NW / A d e e e ( b) N N N V 2 M M f + ( M e M f )[1 ( 1) ] ( c) 0.5V A e M N f N 3 d N S = V 0.9h t τ cr λ 1.25 τ = [ 1 0.8( λ 0.8)] f ( a) cr 2 λ 1.25 τ cr = fv / λ b N S τ cr λ V / f y hw
31 N β M + f ( ) ϕ ] W O mx 1 xy Ae0 [1 ( N O / N Exo) ϕ xy el 2 N = π EA Exo eo 2 / 1.1λ ( ) N O M l e0 A Wel ϕ β xy mx N Exo 2 GB M W l el 2 h = µ h h µ µ γ γ µ γ I C 0 I c1 K2/K γ 31
32 1 l µ γ K 1 K 2 I c0 K 1 = I cl / h K 2 = I b 0 /(2Ψs) I cl I b0 S D.0.2 a e = h =ηµ h o γ ( Pli / hli ) η = 1 + ( ) ( P / h ) li li J µ γ P li Pfi hli h fi µ γ 1.0 1:5 µ γ 32
33 e µ γ P P l f 2 K H u a 3 µ = 4.14 EI c0 /( Kh ) a γ 3 µ = 5.85 EI c0 /( Kh ) b h γ a b µ γ η = ( Pli / hli ) µ γ =1.0 ( P / h ) fi fi b 1.2 P E0i Pi µ γ = a K P h i i 1.2 P E0i Pi µ γ = b K P h e0i 2 0i 2 hi i i π EI P = ( ) hi Pi i Pe 0 i a b 33
34 P-u µ γ 2 µ γ = γ γ ( γ ) γ = ( d1 / d 0 ) h d o d d β mx N y o ϕ A eo β M t l + f ϕ W bγ el β = t N 2 1 / N Ex ( N / N Ex0 )
35 β = t ϕ y ϕ b γ GB N o M l β t N Exo l Ao h0 µ λ 4 yot S o 235 ϕ ( ) ( ) 2 b γ = + ( λ W µ 4.4h f ) yo yo x0 λ = µ l / i S S W yo o o f y ϕ bγ µ = γ lh / A µ = γ l / W i yo A h W t o o xo A f o i yo 1/3 y 35
36 l GB B-1 η ϕ 0.6 GB b ϕ br N Af f y N = cosθ 235 A f f y GB t 2 f 235 F 15 α mt f t f W y b 36
37 α m = 1.5 M /( We f ) F t f t W 16 α m α m 1.0 M W e / f y GB m Z m 6m mm 37
38 M x M x y + f W enx M W eny M y y W W J y enx eny GB M x + ϕ W bx ey M W y ey f W W X y ex ey ϕ bx GB GB E 38
39 E GB GB m 6m M X y + f W enx M W eny 39
40 3V y max 2h t o f V V X max f V 4b t o M M X Y x y Vx V y W W y enx eny b h 0 0 t 2 E
41 6.5.4 GB GB GRC mm GB mm 300mm
42 mm GB mm T 8mm F 3 GB hf 2 4mm a β f N τ = 0.8 f tl N t l 2 f b 42
43 N τ = 0.7 f ( ) tl 3 J 4mm 1) N τ = h 0.75 f f f l 2 N τ = h 0.7 f f h f f f f l t 40mm 15t 30t t 43
44 a 7.2.1b 7.2.1c 7.2.1d M16 M24 M d 44
45 ( 7.2.1a c) mm mm mm t t 6ei N bf 3e N t (0.5a + e t ) f ( ) ( ) t [ e 6e e b + 2e ( e f i f N t + e )] f ( a) 45
46 t [ e 12e e b + 4e ( e i f f N t + e )] f ( b) 4 t [ e 6e f e N ( b + 2b ) + 4e s t 2 f ] f ( ) N t e e f b b s a f f V M = d d t b c c 7.2.1O d d c t d b M f V 7.2.1O GB/T985 46
47 N t 2 0.4P 0.4P e t f N t 2 0.4P N t 2 f e t N t 2 P e t f Z a
48 o mm 5mm a b GB/T GB/T a b c d 200mm Q235 Q345 GB
49 mm (
50 JG
51 mm 100mm
52 mm mm 4 300mm l
53 53
54
55 GB
56 h
57 h
58 A A.0.1 ω = µ 2 kn m ω k ω o Z k S µ Z ω o A.0.1 GB µ GB m 10m µ S A.0.2 A o 18m 1 1 A A.0.2-1a A.0.2-1b 2 A A A A A A A A GB
59 A.0.2-1b 59
60 A B H Z 10% 0.4H 4% 1m A.0.2-2, A Z( ) 2Z 60
61 1 A A A A m2 A A A A1 1 A A A m2 A A A A 20 A
62 62
63 A m2 A A A A 1 1 A A 50 A 50 A 1 1 A 10 A logA logA logA A A A=lc l (A.0.3) c a+b /2 l/3 a b 2 c=l/3 3 A 1 63
64 B Z 64
65 65
66 66
67 67
68 C 68
69 69
70 70
71 D D L b 2 s s D d 1 = d 2 = D d 2-1 D d d 1 d 2 d 0 D
72 72
73 73
74 74
75 75
76 76
77 E E M M x N y ( + ) + χ W A W ex e M = η q = y M y0 x kq y R = Kl 4 l /π 4 EI fly fly f E E E E M x M ex 5.6 N A e M y M χ fly M y 1/6 y E.0.2 M y0 E E qx q y R 77
78 E K IXl E M M 2 - q xl y / 8 2 q xl y / 24 y0 y R R R R l y K E I fly 1 6 y 78
79 K E.0.3 E.0.2 X 2 λ n 2 χ = 1/[ φ + φ ] 1.0 χ (E.0.2-1) 2 φ = 0.5[1 + α( λ n 0.2) + λ n ] λ λ n = fly λ fly fly / λ 1 = l / i fly (E.0.2-2) E E l fly = 0.7l0 ( R0 ) 0 R E Kl0 = (E.0.2-6) π EI R0 4 fly fly fly i = I / A (E.0.2-7) y fl λ = E / f (E.0.2-8) 1 π 0.21 l 0 λ n λ fly A fl l fly i fly y-y 1 6 y E.0.3 K 1 K = 2 4(1 ν ) h ( h Et 3 d + e) h + C 2 t E e 6 79
80 f( E.0.1 h h = h d t 0.3 C E.0.4 t E.0.4 Ct C t = C t = C 1 1 C + 1 t1 C t (b /100) h d E (E.0.4-2) C =130n (E.0.4-3) t1 C = kei l / s t 2 (E.0.4-4) C t1 Nm m rad C Nm m rad t 2 b mm C 100 b 100mm n 1 k 2 4 I 1 S m E mm mm 3 a b-a 25mm( E.0.4) 80
81 81
82 F F.0.1 F F t W F.0.1 mm k H J
83
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