qua song suOi cua h~ thOng tlIai tieu nong
nghi~p: ._-_.,..- -,.,--- --- ---
----:-fful-sudi thiItki, o/i.--- 0,10 0,5 1,00 1,50 2,00 0
---TlImig-fulg v6C~iiu-kff~pj~C;;fuii--- f---1000 ---,----20 --- --- ---100 67 50 0
---.---...•..---y----r-:--- ..---.,-.,--- --- ---"-" --- ---._---
- Tan suat kiem tra,% 0,02 0,1 0,20 0,50 1,0
0
--- .--_._- ...__._--_•.•.. --_..__.._.•..--- --- ---
Tmmg Ungvai chu ky I~p l~i, nam 5000 I 500 200 100 00
0 2. Cong trlnh dau m6i viIng tneu; cong trlnh
vaMthOng dannlIac lien quan trong h~ thOngt1IOOtieu nong nghi~p(trir cong trinh dannlIac t1IOOtieu nong nghi~p(trir cong trinh dannlIac
qua song suOi cuaMthOng t1IOOtieu nong
nghi~): 1--- --- ---
-.---.---'--.--r---...---r---.---- ..~---.-.---.--,"'.""'.""."- ..•_--,--,.,- -_._-
- Tiln suat thier ke,% 0,20 0,5 1,00 1,50 2,00
0
---Tumlg ungvai chu kfi~-i~C;;fuTI--- ._-,----_.---sao ---20 --- --- ----100 67 50 0 ---~-Tfulsudt"kf&n-tr~-%-'-.---.---.-- ".---_."."_.,.,._-_._ ..,_.--- ---,--- -_._-"--- ---.:-- 0,10 0,2 0,50 1,00 1,50 0 ---Tuang ung--v&ichu-kfi~pi~i~;;fuTI ---_._---_ .., --,--~---._.,., ..,.--- --_._-_.~--- ---,_..--- 1000 50 200 100 67 0 CHUTHICH:
I) LlIU 11Igng,m\l'cnlIac 16"11nhAt trong t~p hgp thOng ke lil llIU11Igng,mllc nlIac c6 tri s6 16'11nhAt xuilt hi~n trong tUngnam. ChAt 11Igngclia chu6i thOng ke (d('>dai, tinh d~i bi8u, thlri glan nhAt xuilt hi~n trong tUngnam. ChAt 11Igngclia chu6i thOng ke (d('>dai, tinh d~i bi8u, thlri glan thOng ke v.v ...) cAn phili thoa man cac yeu du quy dinh trong cac tieu chuAn tuang Ung. Cac sO li~u cAndlIqc xu lyva cling m(\t diau ki~n tmac khi ti8n hanh tinh toan;
2) Neu a phia thuqng ngulin c6 nhUng tac dl)ng lam thay doi di~;uki~n hinh thilnh dong chilyho~c c6 cong trinh di~u tiet thi khi xac dinh cac yeutbquy dinh trong (Ii~u nay cAn phili ke den ho~c c6 cong trinh di~u tiet thi khi xac dinh cac yeutbquy dinh trong (Ii~u nay cAn phili ke den kha nang di~u chinh Ilj.idong chay cua cac cong trinh do;
3) N~u aphia hlj.du dli co cong trinh di~u tiet thi mo hinh xa khOng duQ'cpha hOlj.iho~ vuQ'lqua kha nang di~u tiet cua c6ng trinh do; qua kha nang di~u tiet cua c6ng trinh do;
4) NhUng c6ng trinh thuy 19i cAp~c bi~ n~m trong nhomsb I cua bang nay, khi coll$l ch(mgtin c~y va duQ'ccbU ddu tu chdp thu~, Iii kiem tra c6 th~ tinh vm tAnsuAt 0,01% (tuang (mg vm tin c~y va duQ'ccbU ddu tu chdp thu~, Iii kiem tra c6 th~ tinh vm tAnsuAt 0,01% (tuang (mg vm chu ky I~p Ilj.i10 000 nam) holic Iii ClfChlj.n.
Ghi ehu:
I. Khi xac dinh cac chi tieu chlnh v~ dong chay b~g sb li~u thbng ke ho~c tinh toan, Clindlf bao kha nang dien bi~n cu. cac chi tieu do trong tuang lai sau khi xay d\fDg d~ co giili pMp ky dlf bao kha nang dien bi~n cu. cac chi tieu do trong tuang lai sau khi xay d\fDg d~ co giili pMp ky thu~t va quyet dinh dung d~ nh~ bao dam an toan cho cong trinh va nang cao hi~u qua ddu tu.
2. MlfCnu6c 1611nhAtd~ tinh toan ch~dl)khai tMc cua cac cong trlnh cAp nuac !If chily illhi!, ~p dang binh thuang duQ'c xac dinh theo bang PL3-1, trir wang hgp co nhilng quy dinh hi!, ~p dang binh thuang duQ'c xac dinh theo bang PL3-1, trir wang hgp co nhilng quy dinh khong cho phep khai thac acac mlfc nuac nay d~ phong ngira nii ro co th~ gay ra cho hlj.lau, ho~c trai vm nhUng quy dinh v~ bao v~ de di~u. Trong wang hgp docoquan tu vAnthi~t k~ phili ki~n nghi mlrc nuac khai thac an toan d~ cApco thfun quy~n quy~t dinh.
3. TAnsuAtmlfc nuac 1611nhAtasong nh~ nuac tieu d~ tinh tolin che dl) khai thac cho caccong trinh tieu khong 1611han cac trisbquy dinh sau day: cong trinh tieu khong 1611han cac trisbquy dinh sau day:
a) Tieu cho nong nghieP b~g bien phap !If chily ho~c dl)ng Ilfc: tAnsudt thi& k~ 10 % dambao tieu duQ'Cdu lau luqng thi~t k~; bao tieu duQ'Cdu lau luqng thi~t k~;
b) Tieu cho cac dbi tuqng khac n~m trong he thbng thuy IQ'i(khu dan eu d- thO -
gh" . ' 0 I, cong
n 1l'Pv.v...) theo quy dinh cua cbU dau tu vacoquan qulinly nhung khong 1611h t' ,
d. h ._ crn an suat quy
In heu cho nong nghieP. .
Bang PL3-2. LIfU h"'lng, mve D1••ue thdp nhdt di tlnh toaD an djnh k~t edu eong trinh, n~n m6ng (Theo QCVN 04-05-2012)
Lolj.icong trinh cdp cong trinh
Tan suat lau luqng, mlfCDIracthap nhat, %
Thiet k~ Kiem tra
I. Hi! chlr' I)~c biet, I, II, MlfCnuae
MlfC nuac thao Clj.Dthap III va IV ch~t nhdt d~ sir. chua, nan vet
v.v ...
I)~c biet 99
- -- --- --- --- ----- ---._--- -
I 97 Mlfc nuac trung blnh
2. Cong trinh tren --"----,.,--- .- -95.... ---.
II ngay thAp nhAtdli xay ra
song t(li tuy~n xay d\fDgcong
-,---.---,-_.. --- ----_._-- --- -- --
III 95 trinh
---_.- ---_._- --- ---_._---
IV 90
3. He thong thoat MlfCnuac
nuac va cong trinh I)~c biet, I, II, thApnhAtquy MlfC mrcrc thao Clj.Dd~
lien quan trong he III va IV dinh trong slra chua, nlj.ovet v.v ...
CHUTHICH:
I )Luu Im;mg,m\'c nuClcthdp nhdt dung trong t~p hQll th6ng ke h\ luu luqng, m\'c nuClcco trj s6 be!nhdt xudt hi~n timg nam;
2) Khi cac h(\ dung nuClcah(lluu yeu diu phili bao dam luu luqng t6i thieu 100 hcmluu luqng theoquy dinh abang 5 thi luu luqng thdp nhdt dugc chQn theo luu luqng t6i thieu do. M\fCnuClcthdp quy dinh abang 5 thi luu luqng thdp nhdt dugc chQn theo luu luqng t6i thieu do. M\fCnuClcthdp nMt tinh toan hic nay chinh la m\'c nuClc(mg vm luu luqng t6i thieu noi tren;
3) Khi thiat ke cac c6ng trinh tir cdp Itralen phili xet d€n kha nang m\'c nuClcnay co the h(l thdphcm do long dful h(l luu bi xoi sau ho~c do iInh huang dieu ti€t l(li Clla cac cong trinh khilc trong hcm do long dful h(l luu bi xoi sau ho~c do iInh huang dieu ti€t l(li Clla cac cong trinh khilc trong b~ thang sO!dugc xay d\'fig ti€p theo.
Ph\ll\lc 4. LlJlJ LUQNG MVC NUOC LON NHAT DE THIET ICE cAe CONG TRiNH T~ THm PHVC VV CONG TAc DAN DONG, CH~N DONG
(Theo QCVN 04-05-2012)
Tful sudt m\'c nuClcva luu luqng 100 nhdt de thi€t k€ cac c6ng trinh t(lIDthm ph\lcY\I dful dong thi c6ng (de quai, kenh dful... ), ch~ dong khong 100hcm trj s6 quy dinh abang PL4-1 va PL4-2.
Bang PL 4-1. TAn suAt luu hrvng va mlfC nu6l: Icm nhAtaethiSt kS dc cling trinh t(lm thili ph\lc Y\Icling tac din dong thi cling
cAp cong Tin sUIt luu luvng, mlfC nwc Icm nhAt de thiSt kS clIng trinh t(lmthili ph\lc Y\Idin dong thi cong, khong Icm han, % trinh
Din dong trong mqt mua kho Din dong tir hai mua khli trer len
D~c bi~t 5 2
I 10 5
II, III, IV 10 10
CHUTHICH:
I) Luu luqng, m\'c nuClclim nhdt trong t~p hQ'Pth6ng ke h\ luu luqng, m\'c nuClctucmg (mg YClitrj s6 100 nhdt trong cac luu luqng 100 nhdt xudt hi~n trong thOi dO(lDdful dong thi congo Mua dful dong la thm gian trong nam yeu diu cong trinh ph\lc V\lcong tac dfin dong cful phili tem t(li chAcchi\.nkhi xudt hi~n Iii thi€t k€;
2) Nhilng cong trinh phai dful dong thi cong tir hai nam tralen, khi co lu~ cu chAcchi\.nn€uthiat k€ xay d\'fig cong trinh t(lIDtMi dful dong thi cong vClitful sudt quy djnh trong bang 7 khi thiat k€ xay d\'fig cong trinh t(lIDtMi dful dong thi cong vClitful sudt quy djnh trong bang 7 khi xay ra s\' c6 co the gay thi~t h(li cho phful cong trinh chinh da xay d\'fig, lilm ch~ tien d(l, gay tbn thdt cho h(lluu .... lim hem nhieu so vClidliu tu them cho cong trinh dful dong thi co quan tu vdn thillt ke phm kien nghi !ling muc hilo dilm an toan tuemg (mg cho cong trinh nay;
3) Nhilng cong trinh be tong trQng I\'c co di€u ki~n n€n t6t cho phep trlin qua thi co quan thietke co the kii\n nghj h(l muc dam hilo cila cong trinh t(lIDthm de giilm kinh phi dAutu. Muc h(l ke co the kii\n nghj h(l muc dam hilo cila cong trinh t(lIDthm de giilm kinh phi dAutu. Muc h(l thdp nhi€u hay it tuy thu(lc s6 nam su d\lng dful dong t(lm thiTi it hay nhi€u va do chil dAu tu quyat dinh;
4) Khi b6 tri tran t(lIDxa Iii thi c6ng qua than d~p da dApxay da phm co bi~n phap hilo dam antoan cho ~J'va cong trinh h6 chua nuClC.Tful suat thiet k€ tran t(lIDtrong lrUang hQ'Pnay bi\.ng toan cho ~J'va cong trinh h6 chua nuClC.Tful suat thiet k€ tran t(lIDtrong lrUang hQ'Pnay bi\.ng tful sudt thiet ke cong trinh;
5) clin d\' kien bi~n phap d€ phOng tlin sudt th\'c te diln dong vuQl !lin sudt thiet ke de child(lng d6i pM neu lrUang hQ'Pnay xay ra; d(lng d6i pM neu lrUang hQ'Pnay xay ra;
6) Tdt ca kien nghi nang va h(l !lin sudt thiet ke cong trinh t(lIDtMi ph\lc Y\I dful dong thi c6ngd€u phili co lu~ ch(mg kinh te - ky thu~t chAcchAnva phm dugc co quan phe duy~t chdp nh~. d€u phili co lu~ ch(mg kinh te - ky thu~t chAcchAnva phm dugc co quan phe duy~t chdp nh~.
Bang PL4-2. Tin suAt dong chay Ian nhAtdEthi@tk@chin dong
cAp cong trlnh Tin suAt dong chay Ian nhAt d~ thi~t k~ chin dong, khong 100han,%
D,c bi~, I, II 5
III,IV 10
CHUTHICH:
1) Dong eMy trong ~p h<;rpth6ng ke la luu lu.;mgtrung binb ngay co tri s6 160nbat d6i v6i dongcMy khong bi iInb hu60g eua thuy trieu ho,e luu lu.;mg trung binb giiJ co tri s6 160 nbdt d6i v6i cMy khong bi iInb hu60g eua thuy trieu ho,e luu lu.;mg trung binb giiJ co tri s6 160 nbdt d6i v6i ~~~iInb~*~~~~~~~~ti_~*_
nam th6ng ke. Thm dOllDeh~ dong duge ehia 10 ngay milt IAntrong thang d\l"dinb eh~ dong, tu<mg(mg v6i thm kYluu lugng dang giam;
2) Ciin eiI"van s6 li~u do d\le th\l"Cta trong thm gian trucre thm diam fu1dinb tian Mnh eh~ dong(thuang tian hilnb do d"" lien !\Ietitthm diem kat thue mila Iii dan thm di€m fu1dinb ehiin dong), (thuang tian hilnb do d"" lien !\Ietitthm diem kat thue mila Iii dan thm di€m fu1dinb ehiin dong), d<mvi thi eong hi~u ehlnb I\li phu<mg an eh~ dong eho phil h<;rpv6i th\l"eta eua dong eMy, thm tiat, lieh trieu va trinh len ehUdAutu thOng qua.
Phy lye 5. xAc DINH H~ s6 AN TOA.N CHO PHEP CllA CONG TRiNH (Theo QCVN 04-05-2012)
1. H? s6 an taim cha phtip chung [K] eua cae c6ng trinh thuy 1(Ji va cae b(Jph(Jn cuachung tlu(lc xac tlinh thea QCVN-04-05-2012 nhu sou: chung tlu(lc xac tlinh thea QCVN-04-05-2012 nhu sou:
[K]= n,k, (PL5-1)
m
lie: H~ s6 t6 hgp tai trc;mg,ph1,1thulle van t6 h<;rptili trQng tinb. V6i t6 h<;rptili trQngca ban:
lie~I,O; v6i t6 hgp t:\i trQng d~ bi~t:lie ~ 0,90 va v6i t6 hgp l\l"etrong thm kY thi eong va sUa chua: lie ~ 0,95
Khi tinb toan theo tr\lng thai gi6i h\lOthiI"hai: n, = 1,00
K,: H~ s6 bac dam duge xeltheo quy mo, nbi~m V1,lella eong trinb:
- Khi tinb toan trllDgthai gicri h(ill theo nbom thiI"nbdt: Knduge xac dinh theo cdp eong trinb:
Cong trinb efrpd,e bi~t IfrY K, = 1,25;
Cong trinh efrpIidy K, = 1,20;
Cong trinb efrpII, III va IV Idy K, = 1,15; - Khi tinb toan theo tfllDgtMi gicrih\lOthiI"hal Ifry K, = 1,00 ;
- Khi tinb toan 6n dinb eho mai d6e tl,l"nhien, mai d6e nbiin t\lOnfun ke sat eong trinb khac co h~ s6 bao dam 160 h<m:pMi Ifryh~ s6 bao dam eua mai bfulg h~ s6 bao dam ella dIng trinb
do.
m: H~ s6 dieu ki~n lam vi~. H~ s6 m xet t6i 10\lihinh eong trinb, kat edu ho~ n€n, dllDgv~t li~u, tinb gAndung eua sa d6 tinb, nbom tr\lOgthai giai h\lOva cae yau t6 khae duge quy dinb v~t li~u, tinb gAndung eua sa d6 tinb, nbom tr\lOgthai giai h\lOva cae yau t6 khae duge quy dinb trong cae tili li~u tieu ehufrn thiat ka hi~n hanb cho mai lo\li eong trinb, kat edu va nen khae nhau (bang PL5-1).
Bang PLS-l. Hf s6 diEu kifn lam vifc cua mOt s6 lo,i cling trlnh th'uy •••••I .
Lo,i cling trlnh va lo,i nEn I Hf sll di~u kifn