kc áo đường

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Trng i Hc Cng Ngh GTVT

10.1.4 Thit k nn ng

10.1.4.1. Tc dng ca nn ng

- Khc phc nn ng thin nhin to nn mt di rng dc theo tuyn

ng c cc tiu chu!n " #$nh %& trc dc& trc ng'ng p (ng )c iu*i+n ,e chy 'n ton& m thu.n " *inh t/

- 0m c1 23 cho o ng4 56p ph7' trn c' nn ng c8ng "6i o ng

ch9u tc dng c' ,e chy do nn ng c nh h3ng r:t 56n n cng "

ch:t 5)ng *h'i thc c' c con ng/

10.1.4.2 Yu cu cu chung i vi nn ng

;n ng phi 5 nn tng "t Au tr$nh 2 dng/

10.1.4. !gu"n t#c thit k nn ng

L Mhi m #o *hu "Ec tc dng c' nn ng N*hi *hCng c t7nh ton Oc #i+t&

*hu "Ec ny c thF 5:y PQcm *F tR d6i :y 56p *t c:u o ng tr3 ,u>ngS 5uCn

t )c yu c=u nh 2'u4

- KhCng #9 Au !m " *hCng ch9u cc ngu%n !m tR #n ngoi Nn6c m'&

n6c ng=m& n6c #n cnh ngS

- TQcm trn c8ng phi m #o 2(c ch9u ti UVW t>i thiFu #Xng P >i "6i

ng c:p Y& c:p YY " #Xng Z >i "6i ng c:p *hc

- [Q cm tip theo phi m #o 2(c ch9u ti UVW t>i thiFu #Xng [ >i "6i

ng c:p Y& c:p YY " #Xng \ >i "6i cc c:p *hc/

]rong 4 UVW 5 ch^ 2> 2(c ch9u ti ,c 9nh trong ph_ng th7 nghi+m theo iu *i+n

m`u :t 3 chOt =m nan tiu chu!n& theo bb]U;TTb-Q[ " )c ngHm #@o h_' \

ngy m/

Sinh Vin : T Vn Linh

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L ;n p trn :t yu p dng theo bb]U; bZb

L ;n ng trong "8ng 9' ch:t ph(c tp& p dng theo bb ]U; b

L F hn ch tc hi ,:u n mCi trng & " cnh Au'n c=n ch? trng cc nguyn

tc 2'u4

- n ch ph hoi thEc ".t/ Khi c thF gom :t hng *inh t " ,@ hi c' c dHn nh gHy

ng.p 5t rung :t& nh c'/ Uc "9 tr7 " *h!u cCng tr$nh thot n6c phi F

*hCng ng.p d_ng 5G " gHy ph nn 3 chj *hc& trnh cn tr3 5u thCng ni # d9'

ph1ng& tCn trng Auy hoch thot n6c c' 9' ph1ng/

10.1.4.4 $i%i &h& thit k nn ng

- V rng nn ng k/Qm

- d>c mi t' 5uy nn o 4

- d>c mi t' 5uy p 4&[

a. '(t #& nn ng

l :t p nn ng )c 5:y tR m :t& tR th8ng :u& hoOc tR nn o/

]h8ng :u phi thit * c h$nh dng h$nh hc hon ch^nh *hCng 5m ,:u

cnh Au'n " *hi c thF t.n dng )c 2'u *hi 5m ng/

:t tR cc ngu%n phi )c 5m th7 nghi+m/

Uc 56p )c p ,en * nh'u nhng *hi 56p thot n6c 3 trn *h thot

n6c th$ mOt c' 56p d6i phi 5m d>c ng'ng b - \ F thot n6c/

l Khi nn ng p #Xng ct& nn ng phi )c #'o ph F ch>ng ,i 53

# mOt %ng thi m #o n6c trong nn ng thot )c r' ngoi/ ;u #'o #Xng

:t d7nh& ch^ 2> do Yp q th$ chiu dy #'o ph 7t nh:t 5 Q&[m " phi 5m t=ng 5c

ng)c F cho n6c thot r' )c/


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l Khi nn tE nhin c d>c ng'ng d6i bQ )c phap o # 56p :t hc ng'ng tR bQ - [Q phi o thnh #.c

c:p tr6c *hi p nn ng/ Khi nn :t tE nhin c d>c ng'ng 56n h1n [Q

phi thit * cCng tr$nh ch>ng Ntng chn ///S/

l chOt * s Q&kP "6i chiu dy :t p dy TQcm t7nh tR 56p *t c:u o

ng tr3 ,u>ng/ U_n 5i 5 cc 56p :t Kk[/

]r6c *hi p :t nn ng t' tin hnh #c 56p h 5oi :t 2'u4*. t ct

:t ct c cng c'o " Dn 9nh t>t >i "6i n6c Nh+ 2> m' 2t trong c' ct

t1ng >i 56n& t7nh th:m thot n6c t>t " m'o d`n *amS/ ;hng :t ct ri rc&

*hCng d7nh nn phi c 56p :t d7nh #c ,ung Au'nh F gi< cho nn ng *hCng #9

ph hoi c' m'& gi/// ]' c thF d8ng 2at trn "o ct F tng d7nh c' :t ct/

B$ nh

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B$ ".y >i "6i 5oi :t ny r:t #:t 5)i *hi ,Hy dEng nn ng " ch^ nn d8ng F

,Hy dEng cc 56p d6i c' nn ng N d6i *hu "Ec tc dngS/

]m 5i& 5oi :t ct 5 ".t 5i+u ,Hy dEng nn ng th7ch h)p nh:t& t>t nh:t/

x'u 5 5oi :t 2at/ :t ct c mt 2> ht 56n nh:t 9nh nn t yu c=u "

cng " Dn 9nh n6c t>t/ %ng thi 5i g%m mt 2> ht nh nh:t 9nh/

c. '(t nn tn tu"n v +a chn (t #& nn ng

t l vt liu ch yu xy dn! nn "#n!$ %&nh cht v t'(n! th)i c*

(t %nh h3ng (t +n n cng v /5c 6n 7nh ca nn ng.u' h% 21 *ho 2t on ng ny trn nn :t c zo s \[ {M'& nn :t ny

5 :t | ct nh} " ct/

Un c( "o cc ch^ tiu& t7nh ch:t c1 57 c' cc 5oi :t " t.n dng ".t 5i+u 9'

ph1ng 2~n cchn 5oi :t | ct nh} " ct F p/

Uh^ tiu c' :t | ct nh} " ct nh 2'u4

]n :t z N{p'S NS U N{p'S NS

| ct nh} " ct \[ bP Q/QP ZQ

8%ng 89.10.1. )%ng ch: tiu ca (t

10.1.; Thit k kt c(u , ng

10.1.;.1. Yu cu chung i vi kt c(u , ng

{Ot ng 5 cCng tr$nh #'o g%m nhiu 56p ".t 5i+u c c(ng " cng

56n h1n 2o "6i :t nn& )c ,Hy dEng trn nn ng nhXm F to nn #Xngphng 5oi trR cc #in dng c hi >i "6i ,e chy& c8ng "6i nn ng ch9u 5Ec "

F #o "+ cho nn ng *hCng phi ch9u 5Ec Au 56n d`n n ph hoi/

- Mhi c cng chung " Dn 9nh " cng / Ung mOt ng

)c Oc trng #Xng *h nng ch>ng nan 5?n/

- {Ot ng phi #Xng phng trong 2u>t thi *I t7nh ton "$ #Xng phng

nh h3ng n t>c c' ,e& tuDi th c' ,e& chi ph7 nhin 5i+u& chi ph7 ".n hnh/

- {Ot ng *hCng pht 2inh cc "t n(t gHy tHm 5 *h ch9u cho ngi 2dng hoOc m:t mJ Au'n/

- {Ot ng phi nhm F m #o t>c ,e chy 'n ton gi'o thCng/

- {Ot ng phi 7t #i& 7t ting %n/

- {Ot ng phi ch9u 2E #o m_n t>t/


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10.1.;.2. *c ngu"n t#c thit k /=t ng

Kt c:u mOt ng 5 # ph.n t tin nh:t c' ng C tC 3 n6c t'& chi ph7

,Hy dEng o ng chim t6i \[ - Z[ N>i "6i cc tuyn ng "8ng %ng #Xng

" C th9S& "6i TQ - \Q N>i "6i cc tuyn "8ng n?iS gi thnh ,Hy dEng ng C tC/

%ng thi o ng cGng trEc tip nh h3ng nhiu nh:t n iu *i+n chy ,e/ ]in# r' F 2 tr7 ph8 h)p cc 56p

*t c:u tuHn theo cc nguyn tc 2'u4

l ]heo nguyn tc thit * tDng thF tuyn ng& nn ng " mOt ng4

]iu

chu!n thit * tuyn& nn " mOt ng phi ph8 h)p "6i nh'u t(c 5 thit * tuynnn ,at t6i cng " Dn 9nh c' nn ng& h1n nc ,e chy t7nh ton/ Kh nng cung c:p ".t 5i+u& ph1ng ti+n thi cCng&

iu *i+n *h7 h.u " iu *i+n F duy tu #@o dng


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l >i "6i mng ng

- iu *i+n 9' ch:t thu "n& thD nhng

- ]$nh h$nh nguyn ".t 5i+u c 2~n

+ ,hn vt liu ch t.n! mt ) "#n!

B.t 5i+u 5m 56p mOt ch yu c=n d8ng 5oi 7t hoOc *hCng th:m n6c& c

cng " t7nh Dn 9nh " cng >i "6i n6c " nhi+t c'o& Oc #i+t c *h

nng ch>ng tc dng ph hoi # mOt cGng nh ch9u #o m_n t>t/ B$ ".y& nn d8ng

cc ".t 5i+u c c:u tr?c 5in *t t>t Nd8ng thm ch:t 5in *tS c chOt 56n& c c>t

5i+u )c chn 5c " h$nh dng " t$nh trng # mOt F #o m cng Nc " S

c=n thit " *7ch c ht nh F m #o ch>ng #ong #.t t>t /

+ ,hn vt liu ch t.n! m/n! ) "#n!

B.t 5i+u t=ng mng c thF d8ng c cc 5oi c:u tr?c ri rc& *7ch c 56n& 7tch9u )c #o m_n nh cc 56p dm& c:p ph>i& :t " gi' c> ch:t 5in *t "C

c1& 2i cui& #'& ph 5i+u cCng nghi+p& gch "/// Ung c' 56p mng cng

ph7' d6i th$ c cng th:p h1n F ph8 h)p "6i Auy 5u.t truyn (ng 2u:t do hot

ti/

>i "6i *h7 h.u 3 Bi+t ;'m Nnhi+t 6iS th$ *hCng nn chn ct 5m 56p mng

d6i c8ng "$ ct rjng to iu *i+n thu.n 5)i cho "i+c t7ch t !m& %ng thi ct c

cng th:p *hCng gp ph=n "o "i+c ch9u ti ng *F& 5i gHy *h *hn cho "i+c

thi cCng cc 56p #n trn/ ;u d8ng ct 5m 56p +m th$ phi ,Hy dEng h+ th>ng r@nh,1ng c th.t t>t F thot n6c 5_ng ng/

Un c( "o ngu%n ".t 5iu ti 9' ph1ng " *inh nghi+m 2 dng ".t 5i+u

5m 56p mng " cc d< 5i+u @ cho dE *in 56p mng nh 2'u4

06p mng d6i4 U:p ph>i dm 5oi Y dy TQm

06p mng trn4 U:p ph>i dm 5oi YY dy b\cm

x'u *hi 5E' chn *t c:u o ng t' tin hnh *iFm tr' ,em ,at *t c:u @

chn theo T trng thi gi6i hn @ t yu c=u c' Auy 9nh ch'/ %ng thi t7nh

ton ,c 9nh 5i # dy c=n thit c' mji 56p c:u to/Bi+c t7nh ton *t c:u o ng g%m ni dung *iFm ton theo T tiu chu!n

trng thi gi6i hn d6i Hy4

l ]7nh ton "ng n h%i thCng Au' *h nng ch>ng #in dng N#iFu th9

#Xng tr9 2> mC un n h%iS c' c *t c:u o ng " tr9 2> mC un n h%i c' *t

c:u phi 56n h1n tr9 2> mC un n h%i yu c=u Nzch zgcS/


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l ]7nh ton (ng 2u:t tr)t trong nn :t " cc 56p ".t 5i+u yu ,em c ")t

Au tr9 2> gi6i hn cho phap *hCng/

l ]7nh ton (ng 2u:t *ao u>n pht 2inh 3 y cc 56p ".t 5i+u ton *h>i nhXm

*h>ng ch *hCng cho phap n(t 3 cc 56p /

6.Quy trnh tnh ton - ti trng tnh ton:

Cn c vo lu lng xe hn h ! n" #$nh #o%n #& #$nh #o%n lu

lng c'& c%c xe ch( ! #$nh #o%n nh )&u*0 "#n! mm "1c t&nh

t)n thit 2 th3 4uy t'nh thit 2 ) "#n! mm 55 %,6 577-89$

a. T%i tng t?nh t,n.@ta tang AB22T*!211B0AC

]i trng trc Ntrc 1nS 4 M s QQ K;/

p 5Ec t7nh ton 5n mOt ng 4 p s Q&Z {p'/

ng *7nh "+t #nh ,e t1ng 1ng 4 s TT cm/

). Dc 7nh E tc FG t?nh t,n tn /t +n FG.

x> trc ,e t7nh ton ;tt 5 tDng 2> trc ,e @ )c Auy Di " trc ,e t7nh ton tiu

chu!n 2 thCng Au' mOt ct ng'ng on ng thit * trong mt ngy m trn 5n

,e ch9u Eng 56n nh:t "o thi *I #:t 5)i nh:t 3 cu>i thi hn thit */

c. Dc 7nh +Hng FG ca cc +,-i FG 3 nI/ cui thi h-n thit k0u 5)ng ,e chy t7nh ton 3 nm t1ng 5'i )c ,c 9nh theo cCng th(c4

;ts ;/NlASt- Nq/S

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l ;4 0u 5)ng ,e 3 nm =u tin cCng tr$nh )c ' "o *h'i thc/

l t4 x> nm *h'i thc Nt7nh tR nm =u tr3 iS/

l A4 + 2> tng tr3ng hng nm/

- ]heo 2> 5i+u @ cho t' c4 ;hhs qbQ ,ehhng/m/

- + 2> tng tr3ng ,e hng nm4 A sZ

- ]hnh ph=n d_ng ,e4

l e Khch nh4 k/bT

l e *hch 56n4 \/ZZ


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l e ti nh}4 [/[

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8%ng ^u" 6i +& kt c(u , ng

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T Vn Linh14

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c

c

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hc

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8%ng 89.10.1W 8%ng =c chng ca kt c(u 8T!

'i vi +& 8T! +& tn

T Vn Linh15

8/10/2019 kc o ng

16/27

c

c

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un n h%i trung #$nh

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K# 4+ 2> ,at n Oc iFm phHn #> (ng 2u:t 1n "9 f K#sQ/P[

T Vn Linh1

8/10/2019 kc o ng

17/27

2u

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iu *i+n *ao u>n m #o *hi

d

2u

tt

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c

A

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d

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4 + 2> m #o cng *ao u>n "6i tin c.y Q/k[ t' cd

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cB

s/Q

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T Vn Linh1!

8/10/2019 kc o ng

18/27

UM 5oi Y TQQ &b b\ Q&P[ [\ bq/[

V]; nhE' chOt

k

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d

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B

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sQ/k\

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8/10/2019 kc o ng

19/27

c b/ /2u 2u

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c

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s t

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Uc Oc trng c' ".t 5i+u nn " o ng nh 2'u4

T Vn Linh1#

8/10/2019 kc o ng

20/27

h. q.

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k

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8/10/2019 kc o ng

21/27

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k

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V]; nh' chOt

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sTZTT s /Qk tr' #ng T/Zs h+ 2> iu ch^nh s &q[

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n h%i trung #$nh

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c

b Q

Tcb/\q

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dc

t=;;

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sZ/k\

T Vn Linh21

8/10/2019 kc o ng

22/27

s bP

Q

tr' #iFu % h$nh T/T t' )c

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c

tt

t'

cd

,

2= =

{p'

s*x *v% %+ n 5n n # mOt

o ng

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hc

0oi ".t 5iu z N{p'S hi NcmSV]; nhE' chOt k PQQ [V]; nh' chOt b/[ ZQQ q

8%ng 89.10.22 8%ng =c tng kt c(u 8T! + gia c

'i vi +& 8T! +& tn

c

c

/cPQQ,[ cZQQ,q

cZPT/TTcb

;i hi

;h

+= = =

{p'

T Vn Linh22

8/10/2019 kc o ng

23/27

\& kt c(u

@t_ di +n

tnC

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aC TJQi

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l]7nhch;

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un n h%i trung #$nh

s zt#dcsTQQ , /QZZ sTk/q N {p'S

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Q \[ Q/c\Tck/qdct=

;

;= =


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]$m2u

3 56p y # tCng nhE'

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?@ = =

f

c cZPT/TT

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;

; = =tr' ton % h$nh T/[ t' c

2u

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psQ/Z {p'

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2u

4 (ng ,u:t *ao 1n "9


d

2u

tt2u 2u

c

A

B

T Vn Linh23

8/10/2019 kc o ng

24/27

d

2u

cB

4 + 2> m #o cng *ao u>n "6i tin c.y Q/k[ t' cd

2u

cB

s/Q

c b/ /2u 2u

ttA B B A=


2uAsb/Q


c Q/bb Z Q/bb

cc/cc cc/ccQ/[[q

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6= = =



s

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d

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Q/k\

2u

tt

2u

c

A

B= =

s

d

Q/k[ c/cP[2u

tt2u 2u

c

AC>* C>*

B = < =

s t'i vi +& 8T! +& di

\& kt c(u

@t_ di +n

tnC

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aC TJQi

@c/C JQt)

@c/C

L]t)

@M&aC


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l]7nhch;

sTTT s Q/kTk tr' #ng T/Zs h+ 2> iu ch^nh s &Qkq

T Vn Linh24

8/10/2019 kc o ng

25/27


un n h%i trung #$nh

s zt#dcs\kP/[P , /Qkq s[\q/T\ N {p'S

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;; = =


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3 56p # tCng nhE' 56p trn

[Q/c[c

TT

?

@= =

f

c cPQQ cQ/ZcZk/kq

ch

;

;= =

tr' ton % h$nh T/Z t' c2u

s/kb " "6i psQ/Z

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2u

4 (ng ,u:t *ao 1n "9


d

2u

tt2u 2u

c

A

B

d

2u

cB

4 + 2> m #o cng *ao u>n "6i tin c.y Q/kQ t' cd

2u

cB

sQ/k\

c b/ /2u 2u

ttA B B A=


2uAsb/PQ


T Vn Linh25

8/10/2019 kc o ng

26/27

c Q/bb Z Q/bb

cc/cc cc/ccQ/[[q

NQ/Pc/cQ S3B

6= = =



s

2uttA

sQ/[[q,,b/PQs/[Z

d

c/[Zc/ZZ

Q/k\

2u

tt

2u

c

A

B= =

sd

Q/kT c/ZZ2u

tt2u 2u

c

AC>* C>*

B = < =

s t

T Vn Linh2

8/10/2019 kc o ng

27/27

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