Specification for structura design of buried prestressed concrete pipeine of water suppy and sewerage engineering CECS 40:

Size: px

Start display at page:

Download "Specification for structura design of buried prestressed concrete pipeine of water suppy and sewerage engineering CECS 40:"

唤暴
5 years ago
Views:

1 CECS 40:2002 Specification for structura design of buried prestressed concrete pipeine of water suppy and sewerage engineering 2003

2 Specification for structura design of buried prestressed concrete pipeine of water suppy and sewerage engineering CECS 40:

3 GBJ GB GBJ 53 GBJ [986]649 CECS CECS/TC

4 A B

5 C D E

6 GB

7 ep, fw, p sv, w wd, M max N Q v q m q v pe f mc, f mt, E m E c ε mt A c0 7

8 A sc A cm A n A p a b D H s C c C d C j α ct r µ d ω 8

9 C GB 5000 GB CECS GB mm GB/T mm mm5mm 8 6mm7mm mm GB mm GB/T GB 9

10 f mt, 0.58 f mc, 3.4. MPa f mt, f mc, MPa E m MPa E = ( ) 0. 3 m 8247 f mc, ε mt ε mt = f mt, E m

11 N/m A B sv, ep, p

12 pe con s s2 s3 s λ = s E s λ mm.omm mm Es N/mm N/mm 2 2 s2 s 2 = s2, i s2, i = con φ φ t ni i N/mm 2 s 2,i con 2

13 φ t.0.2 φ ni i ρ ρ.0. ρ ρ 2 2 φap + φ2 Ap2 φ n φn = A p A p 2 A + A mm 2 /m s3 p N/mm 2 p2 p f cu p f cu p + p = p p2 c p p2 = = A A p A 0.75 f ( ) A p2 cy cy con + na s2. p ( ) + n con ( A + A ) p s2.2 p N/mm 2 p p N/mm 2 3

14 p2 N/mm 2 s2. s2. 2 N/mm 2 A mm 2 p A p2 A cy A cy mm 2 mm 2 f c N/mm GB C N/m m q v wd, wd, =. 4 w w MPa

15 G sv G w ep p pe wd q, q v m q gw G sv, q gw, G Gw sv, ep, wd, p.2g.27g.27 w sv,.0 ep,.4 wd,.4q v.4q m. 5

16 γ S 0 R γ 0..0 S R GB S = γ m n GCGG + γ GiCGiGi + ψ c γ Qj i= 2 j= C Qj Q j γ G γ Gi γ Qj C C C G Gi Qj i.27.0 j. 40 i j G G i 6

17 Q j j ψ c K f S d = C m GG + CGiGi + ψ c i= 2 n j= C Qj Q j S d S d = C m n GG + CGiGi + CQjψ qj i= 2 j= Q j ψ qj j 4.3 7

18 G + fw, sv, K f 6.. N/m sv, fw, N/m K f p ep, + wp, f K s p f a p min pmax.2 f a N B p ep, N B f N wp, N K s p N pmin N p max N 8

19 f a N GB GB N A p Q λ y f py wd, N 0 M + d max 0 ( ψ q ) = ψ γ γ D c [ ( γ + ψ γ q D ) + γ D + γ G γ G ] = γ + Mmax 0 vm G3 sv, c Q2 v hm G4 ep, wm G2 w gm G A p sv, c v mm 2 /m N N/m M max Nmm/m d 0 mm f py N/mm 2 GB 5000 λ y γ mm vm hm wm gm E 20º gm D mm γ Gi γ i j Qj qv N/m 2 m, m, 9

20 sv, ep, G w N/m G N/m wd, N/m N/m N/m λ y Ap N f pv M max + A f sc d mm 2 /m A sc f N/mm 2 GB pc A p A co pc pe pe = con s mm 2 /m A p pe pc N/mm 2 N/mm 2 s N/mm 2 A co mm

21 A p Acm ( α cp ss ft pe N ps M ss = + A γw cm pms cm pms N = ψ ps c wd, γ 0 0[ vm sv, + cqv D + hmep, D + wmgw gmg M = ψ γ z() ] mm 2 /m A cm M pms Nmm 2 /m N ps N/m W mm 3 /m cm f t α cp γ pe ss N/mm 2 N/mm An A p ( ss λc f t ) n p pe N ps M pms ss = A γωw mm 2 /m A n λ c.5 W p mm 3 /m 2

22 ω D A p Acm ( ss α mε mt Ec pe N ps ss N = A cm M + γw wd, r0. 5 max cm ( ψ q ) = ψ 0 + D c sv, [ ( + q D ) + D + G G ] Mpms = r0 vm sv, ψc v hm ep, wm w + gm c v N/mm 2 ss N N/m M max Nmm/m E c N/mm 2 ε mt α m.5 2 An A p ( ss α mε mt Ec ) ss N = A n pe M + γωw max p Acm A p ( s ε mt Ec ) pe N s = + Acm M γw max cm

23 N wd, r0. 5 ( q ) = ψ 0 +ψ D qw sv, qv v ψ qw max ( + q D ) + D + G G ] M = r ψ s 0[ vm sv, qv v hm ep, wm w gm N/mm 2 N p N/m M pm N mm/m ψ qv 2 An Ap ( s ε mt Ec ) pe N s = + An M γωw max p

24 mm mm 6mm 25mm cm 4mm mm a 2a 90º 20º 5º a 35º a 20º mm mm mm

25 mm00 mm mm mm mm mm

26 A A.0. = C γ H sv, d s s D A.0. sv, N/M C d.2 H s m D m γ s 8N/m 3 A.0.2 = C γ H sv, c s s D A.0.2 C c.4 26

27 B B.0. Z ep, = γ s 3 B.0. ep, N/m 2 Z m B.0.2 ep, = s w γ s 3 [ γ Z + ( Z Z )] w B.0.2 0N/m 3 γ s Z w m B.0.3 p = γ ztg s 2 φ (45º + 2 ) B.0.3 φ 30º 27

28 C C.0. C.0. q s C.0. C.0.2 q v = µ Q d ( a +.4H )( b +.4H ) s v s C.0.2 q v N/m 2 µ d C.0.3 Q v 20 60N 20 70N a m b m H s m C q v = ( 2a + 2d +.4H )( 4b + d + 2d +.4H ) a 8µ Q s d v v b s C.0.3 d a.2m db.2m 28

29 dv.7m C.0.3 µ d H s µ d C.0.4 C.0.2 C.0.3 C.0.5 /3 29

30 D D mm ω D ω mm ω

31 E E E vm hm wm 20º 90º 20º 35º gm

32 2 3 32

GF

P GB 500692002 Structural design code for special structures of water supply and waste water engineering 20021126 200231-1 - Structural design code for special structures of water supply and waste water