do an thep 2

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O AN THEPNHA CONG NGHIEP MOT TANG, MOT NHP

E BAI: Gia TrThiet ke khung ngang nha xng 1 tang, 1 nhp. Gia Tr

1. So lieu thiet keCao Trnh

Nhp Bc Cot Mat at Ap lcL (m) B (m) t nhien Mat nen Mat ray Cau truc io cao

(m) (m) (m) Q (KN) o 10m

27 6 -0.6 0 14.2 700/200 95

Phan vung gio:o doc cua mai chon i = 0.1 a = 5.710593 ( chon theMoun an hoi E E = 2100000 daN/cm2 2.1E+08 KN/m2Vat lieu thep CCT34 f = 2100 daN/cm2 210000 KN/m2

fwv = fv = 1200 daN/cm2 120000 KN/m2fwf = 1800 daN/cm2 180000 KN/m2Han tay, dung que han N42

2.1 XAC NH CAC KCH THC CHNH CUA KHUNG NGANG2.1.1 Theo phng ng

Sc nang Q(T) = 700/200 , che o lam viec trung bnh ( 6.1.1 _ 3_ tai lieu )750 mm, Khi nha co cau truc Q =< 75 T ( 6.2.4.1 _ 14_ ta25.5 m, Nhp cau truc

Tra Phu Luc VI cua oan nh Kien ta co thong so cau trucQ (KN) Lcc Cac kch thc c ban (mm) Kieu

(m) B K HK B1 F ray

700/200 25.5 8800 4560 3700 400 250 KP100Chieu cao t mat ray cau truc en ay xa ngang

4 m0.3 m khe h an toan gia cau truc va xa ngang

Chieu cao cua cot khung, tnh t mat mong en ay xa ngang:18.8 m

Trong o H1 - cao trnh nh ray 14.2 mH3 - phan cot chon di nen 0.6 m (oan nh Kien 9)

Chieu cao cua phan cot tren0.6 (m) = (1/8 - 1/10)B ( oan nh Kien 9)

0.2 m ( oan nh Kien 9)4.8 m

Chieu cao cua phan cot di14 m

2.1.2 Theo phng ngangKhoang cach t mep ngoai cua cot en truc nh v a= 0.25 m V Q=

Chieu cao tiet dien cot tren chon :ht = 0.5 (m) = (1/10 - 1/12)Ht va

Chieu cao tiet dien cot di chon :hd = 1 (m) > (1/15 - 1/20)H vaKiem tra khe h gia cau truc va cot khung

l Lcc L 2 l

2 K KH H b

Kb

1 2 3H H H H

Hdct

rH t 2 dct r H H H H

d tH H H

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l B1+(ht -a)+D= 0.725 OKD = 0.075 m (Khe h an toan gia cau truc va ma

2.2 KCH THC DAN MAI VA CA MAI2.2.1 CA MAILcm = (1/3-1/2)L= 9 m 7 m

13.5 m (chon)

Chieu cao o ca a = 1/15L = 1.8 mChieu cao bau ca hbc = 0.4 m (theo o an mau)

Chieu cao ca mai Hcm = 2.61 m ( 0.01 la chieu day ton)2.3 HE GIANG3. T NH TOA N KHUNG NGANG3.1 TAI TRONG TAC DUNG LEN DAN3.1.1 TNH TAI

Tai trong thng xuyen tac dung len khung ngang bao gom trong lng cualp mai, trong lng ban than xa go, trong lng ban than khung ngang va daTrong lng ban than cac tam lp, lp cach nhiet va xa go mai la 0.15

Trong lng ban than dan va he giang gd = 1.1*1.2adL = 0.21384m

Trong lng ket cau ca tri gct = 1.1*actlct = 0.0385 KN/m ( oan

Trong lng bau ca tri 1.5 KN/m (oan nh Kien 14)Trong lng ca knh va khung ca knh 0.4 KN/m2 (oan nh Kien 14Trong lng dam cau truc

11.34 KNTrong o adct = 30 Vi cau truc co sc truc trung bnh Q

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Trong o ek = l-hd/2 + a= 0.5 mLc ham ngang cua xe con

Lc ham ngang tieu chuan cua 1 banh xe cau truc

27 KN

Trong o n0 = 2 So banh xe 1 ben cau truc (oan nh Kien 163.2 TAI TRONG GIO TAC DUNG LEN KHUNGChon dang a hnh thuoc loai B

q0 = 95 a m Ap lc gio o cao 10m

Z, m a Hnh B10 115 1.08

18.8 1.096520 1.13

20.8 1.137230 1.22

T o cao 18.8 en 20.8Lay K = 1.11685

Bang tra cac Ce1,Ce2,Ce3He so a, o H/l = 0.696296

0.5 0.696296 10 -0.6 -0.7 (Bang 6 trang 25 TCV

Ce1 5.7105931 -0.54289 -0.63491 -0.720 -0.4 -0.7

Ce2 60 -0.4 -0.45857 -0.5

b/l b/l Gia Tr Ce3 khi H/l = 0.6962960.5 0.696296 1

1 0.2222222 -0.4 -0.45857 -0.5Tai trong gio phan bo len cot

Pha on gio 6.500052 KN/mPha khuat gio 3.73753 KN/m

Trong o n = 1.3 (oan nh Kien 17)Cac gia tr Ce lay theo hnh ve

Pha on gio Ce = 0.8Pha khuat gioCe = 0.46

Gio len mai quy thanh lc tap trung W

Pha on gio 2.649268 KN (Cac gia tr Ci va hPha khuat gio 18.69434 KN

4. TNH NOI LC KHUNG4.1. S O TNH4.2. TNH NOI LC KHUNG

ochieucao

He So K

Ce=+0.8

Ce=+0.7

Ce1=

Ce4= -0.64

16650

1277

2210

639

xek

0

0, 05.(Q G )T

n

con

d 0q n.q .K.c.B

,

h 0q n.q .K.c .B

0 i iW n.q .K.B. C h

1 0 i iW n.q .K.B. C h

2 0 i iW n.q .K.B. C h

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Ty so cac momen quan tnh chon la:J1 = 1 ; J2 = J1/8 ; Jd = J2/2

Cau Tiet Noi To Hp C Ban 1 To Hp C BaKien Dien Lc Mmax,Nt Mmin,Nt Nmax,Mt Mmax,Nt Mmin,NtCot nh 1,2 1,7 1,2 1,2,8 1,2,4,6

Cot M 185.0269 56.3089 185.0269 233.6404 51.20802N -60.723 -30.034 -60.723 -63.3671 -25.2366

Tren 1,2 1,3,5 1,2 1,2,7 1,2,4,6,8Vai M 63.9682 -68.03642 63.9682 68.87592 -174.4632

N -64.973 -37.83545 -64.973 -57.3337 -30.3783Di 1,3,5 1,8 1,3,5 1,2,4,6 1,2,8

Vai M 335.2771 -1.0034 335.2771 355.3362 26.3286N -781.8474 -57.05 -781.8474 -957.8098 -78.9571

Chan 1,3,5 1,8 1,3,5 1,2,3,5 1,2,8Cot M 27.59145 -900.2085 27.59145 -88.9478 -923.9678

N -794.2474 -69.45 -794.2474 -743.6748 -91.3571V -43.40225 -94.464 -43.40225 -50.43363 -96.3892

Xa 1 au 1,7 1,2 1,4,6 1,2,4,6 1,2,8Xa M -56.3089 -185.0269 -124.6281 -51.20802 -233.6404

N -22.915 -38.92 -42.89995 -47.32796 -38.3317V -26.349 -54.624 -30.70715 -17.01874 -57.4189

Cuoi 1,7 1,8 1,4,6 1,2,3,5,7 1,2,4,6,8Xa M 34.5651 -39.6979 -16.03418 44.76132 -36.13674N -21.455 -23.505 -41.43995 -49.84138 -46.52806V -18.349 -29.589 -22.70715 -25.91864 -12.71944

Xa 2 au 1,7 1,8 1,4,6 1,2,3,5,7 1,2,4,6,8Xa M 34.5651 -39.6979 -16.03418 44.76132 -36.13674

N -21.455 -23.505 -41.43995 -49.84138 -46.52806V -18.349 -29.589 -22.70715 -25.91864 -12.71944

Cuoi 1,2 1,3,5 1,3,5 1,2,7 1,2,4,6,8Xa M 104.3914 40.63566 40.63566 98.71892 -2.366451

N -28.021 -35.7079 -35.7079 -26.0351 -41.20781V 5.116 8.71595 8.71595 9.9799 16.43996

5. THIET KE COT5.1. THIET KE COT TRENChieu dai hnh hoc cua phan cot tren 4.8 mLien ket chan cot vi mong, au cot vi xa ngang eu la ngam

Ty so cac momen quan tnh chon la:J1 = 8 J2 = 1 Jd = 0.5

4.2.3. BANG TO HP NOI LC

.2.1. BANG THONG KE NOI L

4.2.2 CAC TRNG HP TAI TRONG

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phan cottren

trong

ngoai

M 233.6404 -806.8107 355.3362N -63.3671 -962.9515 -957.8098

Chieu dai tnh toan trong mat phang khung cua cot24.97054 m

14.4 mChieu dai tnh toan ngoai mat phang khung cua cot

14 m4.2 m

Trong o0.3645833

Trang 90 TC 338-200515.196396

0.2487642

Tra bang D3 trang 93 TC 338-2005 ta c 1.78361

7.1698819 3 Lay 2 = 3 Neu ko thoa th lay

T bang to hp chon cap noi lc tnh toanM = 233.6404 KNm 233.6404N = -63.3671 KN 63.3671

1) Dang tiet dien va chieu cao h cua tiet dienChon tiet dien cot dang ch H oi xng

0.5 m2) o lech tam va dien tch yeu cauo lech tam 3.687093 m

Dien tch tiet dien cot xac nh s bo theo cong thc gan Ket cau thep 1(2

0.006608 m2

3) Chieu rong tiet dien b va be day cua cac ban tw,tfDa theo yeu cau

0.24 m 0.25 m0.16 m (chon)

Da vao Ayc = 0.0066076 m2 va cac yeu cau

" => tw = 0.008333 m 0.008 m

" => tf = 0.008929 m 0.014 mTrong o n v cua f la KN/cm2

Vay dien tch tiet dien a chon la

h ht M

eN

x

yc

c

MNA 1,25 2,8

f . hN

c

1 1

b l20 30

w

h(60 120)

t

f

b 21(28 35)

t f

1x 1 dl h

2x 2 tl h

2 1

1 2

I ln

I l

2 1

1 2

l I

l Ia

1 2

2

N N

N

1

2

1

a

1y dl h

2y t dctl h h

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Ban Bung 0.003776 m2 A = 0.010776 m2Ban Canh 0.007 m2 OK

4) Kiem tra tiet dien a chonCac ac trng hnh hoc cua tiet dien:

Ix = 0.0004836 m4Iy = 3.648E-05 m4

ix = 0.2118344 miy = 0.0581821 m

0.0019342 m3o manh va o manh quy c cua cot

72.187128 67.97764

2.2827574 2.149642

72.18713 OK

o lech tam tng oi m va o lech tam tnh oi m1

20.54146 Coi tai lieu ieu kienVi 2.2827574 < 5 Va m 20.54146 < 20 Va 0.926907

Tra tieu chuan 338-2005 trang 101 e chon cong thc tnh h1.35434527.82022

Cot co An=A va me 20 nen ta khong can kiem tra cot theo ieu kien on nh tong the trong mNeu ngc lai th kiem tra nh sauVi 2.1496417 va 27.82022 Tra bang II.2 trang 310 c he so

-5880.3916 KN/m2 < f c = 210000 KN/m2 OK

Kiem tra on nh tong the ngoai mat phang uon

Ta co m = 20.54146 >10 nen C c xac nh theo cong thc (4.62)

0.0558038 Trong o jb = 1

ly = 72.187128 Tra bang II.1 trang 309 ta co jy 0.823697Kiem tra theo cong thc (4.60)

127930.9 KN/m2 < f c = 210000 KN/m2 OK

x

x

2IW

h

y

y

y

l

il

y y

f

El l

x

x

x

l

il

x x

f

El l

max120 l l

x

e.Am

W

maxl l f

W

A

A

em m h

xl em ej

e

N

A

j

N

1.4 0.02h l

x

n xMN

A W

x y

b

1c

m1

j

j

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Kiem tra on nh cuc boVi ban canh c kiem ta theo cong thc(4.13). Theo bang 4.4 trang 186

18.60291

2.2827574Vay co8.6428571 18.60291 OK am bao on nh c

Vi ban bung c kiem tra theo cong thc (4.12). Do kha nang chu lc cua cotong the trong mat phang uon (4.58) nen o manh gii han cua ban buVi m = 20.54146 1 OK

2.2827574 2 OK Neu khong thoa th nhap coTa co

63.21283

Va98.03061 OK

Vay co59 65.82746 OK am bao on nh c

ong thi 59 72.73239 OK Neu OK th Khong p

5.2. THIET KE COT DIChieu dai hnh hoc cua phan cot tren 14 mChon cot co tiet dien khong oi xng nh hnh 4.18 ket cau thep 234

h = hd = 1 mT bang to hp chon cap noi lc tnh toanNhanh trong N2 = -962.9515 KN 962.9515 KN

M2 = -806.8107 KNm 806.8107 KNmNhanh ngoai N1 = -957.8098 KN 957.8098 KN

M1 = 355.3362 KNm 355.3362 KNmTrong lng ban than cotPhan cot tren 4.060397

Phan cot di 14.11045

Tong lc nen tnh toan981.1224 KN

Dien tch tiet dien cot xac nh s bo theo cong thc gan Ket cau thep 1(2

0.016597 m2

Chon chieu day ban bung tw 0.01 m

0

f

b E(0,36 0,1 )

t f

l

l l max

0

f

b

t

0

f

b

t

w

w

h

t

w

w

h

t

w

w

h

t

w

w

h

t

E2,3

f

ycj

l

w

1

w

h(1,2 0,35 ) E / f

t

w

w

h3.1 E / f

t

l l max

x

yc

c

MNA 1,25 2,8

f . hN

ct ct tG A H

cd dNG . .HK.R

ct cdN N G G

2w

1

w

h(1,3 0,15 ) E / f

t

l

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S bo Dien tch ban bung Aw 0.01 m2Dien tch moi nhanh co 0.003299 m2

Chon nhanh cau truc la the I 40b = 400 mm 0.4 m

Act = 72.7 cm2 = 0.00727 m2Ix = 19062 cm4 = 0.000191 m4

Iy = 667 cm4 = 6.67E-06 m4d = 8.3 mm = 0.0083 mb = 155 mm = 0.155 m

Chon nhanh mai la thep ba Am = 0.0056 m2Chieu day thep nhanh t = 0.014 m hw = 0.98185

Chon ban bung la thep ban Aw= 0.009819 m2 tw = 0.01Dien tch tiet dien A = Am+Act+Aw = 0.022689 m2Khoang cach t truc trong tam nhanh cau truc en truc tie (Xem bai mau)

0.4593382 m

Cac ac trng hnh hoc cua tiet dienIx = 0.0039367 m4 ix= 0.416549 m 0.000492 0.000484Iy = 0.0002654 m4 iy= 0.108149 m

Wxtrai = 0.0072813 m3Wxphai = 0.0073332 m3o manh

129.45125 59.94626

4.093608 1.895667

Momen tnh la momen dng, o lech ve pha nhanh maiTnh o lech

2.5623739

T le dien tch cua canh nen va ban bung

0.5703519 Va 1.8956672 < 5 OK

Tra tieu chuan 338-2005 trang 101 e chon cong thc tnh hng vi tiet dien loa

1.401344

1.513431

Noi Suy vi 0.5703519 c h 1.42793

o lech tam tnh oi 3.658891Vi 1.8956672 va 3.6588906 Tra bang II.2 trang 310 kc thep c

i i1

x .Ay

A

y

y

y

l

il

y y

f

El l

x

x

x

l

il

x x

f

El l

trai

e.Am

W

m

w

A

A

xl

m

w

A0, 5 (1, 75 0,1m) 0, 02(5 m)

A h l co

m

w

A1 (1,9 0,1m) 0.02(6 m)

A h l co

m

w

A

A

em m h

xl m j

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Kiem tra on nh cuc boVi ban canh c kiem ta theo cong thc(4.13). Theo bang 4.4 trang 186

17.37883

13.928571 17.37883 OK am bao on nh cuc bo

Vi ban bung c kiem tra theo cong thc (4.12). Do kha nang chu lc cua cotong the trong mat phang uon (4.58) nen o manh gii han cua ban buVi m = 2.562374 1 OK

1.8956672 < 2 OK Neu khong thoa th nhap coTa co

58.15533

Vay co98.185 58.15533 Xem lai am bao on nh c

Ban bung b mat on nh cuc bo,ch co 1 phan chieu rong sat 2 canh cung lChieu rong oan cung lam (kc thep trang 183)

0.2907767 m

ong thi 98.185 72.73239 Xem lai Neu OK th Khong p

Do o phai lam cac oi sn ngang gia co ban b (KC thep trang 185)Khoang cach cac sn ngang 2.454625 m Chon a 2.4 mBe rong sn ngang

72.728333 mm Chon bs = 0.1 m

Chieu day sn 0.006325 m Chon ts = 0.008 m

Kiem tra on nh tong the trong mat phang khung178971.03 KN/m2 < f c = 210000 KN/m2 OK

Trong o 0.018686 m2Kiem tra on nh ngoai mat phang khung

Cap noi lc tnh to M = 355.3362 KNmN = 957.8098 KNo lech tam

1.15599 < 5 nen C c xac nh theo cong thc

He so anh hng 0.494149

Trong o a va tra bang 4.9 trang 222129.45125 1 Coi ieu kien

0

f

b E(0,36 0,1 )

t f

l

0

f

b

t 0

f

b

t

w

w

h

t

w

w

h

t

w

w

h

t

l l x

2w

1

w

h(1,3 0,15 ) E / f

t

l

w1 w

w

hC 0.5t

t

w

w

h

t

E2,3

f

wa 2, 5h

ws

hb 40

30

s s

ft 2b

E

e

N

A

j

m ct 1 wA A A 2C t

xxtrai

M Am .

N W

x

c1 m

a

2I / I 1 yl

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99.295519

Khi 1

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NhapXuat

Chieudai nha

(m)m

144 1 3 1#N/A #N/A #N/A #N/A 400 #N/A #N/A

sach)

21 KN/cm2

i lieu )

Ap lc banh xe len ray (KN) Trong Lng (KN)T To Xe con au Truc

370 130 14.1 73 380 1250

700 ( 6.2.4.1 _ 14_ tai lieu ) da vao sc truc (0.4 - 1)m ( 6.2.4.1 _ 15_ tai lieu )

(a+ l)m ( 6.2.4.1 _ 15_ tai lieu )

Mc chnh Mc ph H B1 F Lt

NhpLk

Kch thc gabarit

T mm

Sc lc

c

maxPc

minP

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t trong cua cot lay 60-75mm)

caccau truc, ca tri

KN/m2

(oan nh Kien 14)h Kien 14)

( oan nh Kien 15)

1.3)

700

.75

5250

Pmax

6000

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N 2737-1995)

i xem hnh ve)

Ce3= -0.46

Ce= -0.6

Ce= -0.5

Ce2= -0.46-0.64

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n 2Nmax,Mt

1,2,8233.6404-63.36711,2,820.6586

-67.61711,2,4,6,8314.5601-962.952

1,2,4,6,8-806.811-962.952-112.4751,2,3,5-146.309-53.7755-47.3979

1,2,3,513.02372-50.7783-30.97391,2,3,5

13.02372-50.7783-30.97391,2,3,5

79.08619-43.324

9.887155

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bang 3

6)

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at phang khung

1

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uc bo

t c xac nh theo on nhng c xac nh theo bang 4.10 trang 224

g thc khac trong bang 4.10 trang 224

65.82746

uc bo

ai at sn ngang

6)

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mm

i 5

0.293383

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t c xac nh theo on nhng c xac nh theo bang 4.10 trang 224

g thc khac trong bang 4.10 trang 224

uc bo

m viec vi canh

ai at sn ngang

(4.61)

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1 1 1

#N/A #N/A #N/A KP-100 36 37 #N/A 125

T T

P1 P2 Xe con Cu trc

p lc bnh

xe ln ray

Trng lng

T J

chnh

Loi rayB

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6.1 THIET KE XA NGANG6.1.1 THIET KE XA NGANG 1 (oan Xa 4 Ty so o cng cua xa vaCap noi lc tnh toan

M = -233.64 KNm 233.64 KNmN = -38.332 KN 38.3317 KNV = -57.419 KN 57.4189 KN

Momen khang uon yeu cau0.00111 m3

Tnh s bo chieu cao tiet dien xa

0.56991 m

Tnh s bo chieu day bung

0.00126 m Chon tw = 0.008 m

Chieu cao cua tiet dien xa

0.42886 m Chon h = 0.5 m

Gia thiet chieu day canh xa ngang 0.014 m0.472 m0.486 m

0.00176 m2

"=> bf = 0.12583 m Chon bf = 0.25 mThoa man cac ieu kien

17.8571 31.6228 OK

bf = 0.25 30tf= 0.42 OKCac ac trng hnh hoc

0.5 m 0.00085 m30.486 m 0.01078 m20.472 m 0.00048 m4

0.25 m 0.00193 m30.014 m0.008 m 33.9576

Do mx = 33.9576 > 20Nen tiet dien xa ngang c tnh toan kiem tra theo ieu kien ben

124349 210000 KN/m2 OK

ycx

c

MW

f

maxw

v c

Vt 1.5

h.f .

ycx

w

Wh k

t

k 1.15 1.2

ft

w fh h 2t

3w w

f f 2c fk

t hM h 2b t .

f 2 12 h

fkh

f

f

b

t E / f

h fh

wh

fb ft

wt

A xI

xW

xx

M Am

N W

max33d yc

Mh 5,5 W 5,5

R

e xm m 20(v 1) h h

xn x

N M

A W

cf

fS

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Tai tiet dien au xa co momen va lc cat cung tac dung nen cankiem tra ng suat tng ng tai cho tiep xuc ban canh va ban bung

116105 241500 KN/m2 OKTrong o

114027 KN/m2

12623.8 KN/m2

Kiem tra on nh cuc bo cua ban canh va ban bung0.121 m

8.64286 15.8114 OK

59 173.925 OK

=> Ban bung khong b mat on nh cuc bo di tac dung cua ng suat phap ne(Khong can at sn doc)

59 101.193 OK

=> Ban bung khong b mat on nh cuc bo di tac dung cua ng suat phap tie(Khong can at sn cng ngang)

59 79.0569 OK

=> Ban bung khong b mat on nh cuc bo di tac dung cua ng suat phap va(Khong can kiem tra cac ban bung)

Vay tiet dien xa a chon at yeu cau6.1.2 THIET KE XA NGANG 2 (oan Xa 6.5m)Cap noi lc tnh toan

M = 104.391 KNm 104.391 KNmN = -28.021 KN 28.021 KNV = 5.116 KN 5.116 KN

Momen khang uon yeu cau0.0005 m3

Tnh s bo chieu cao tiet dien xa

0.43569 m

Tnh s bo chieu day bung

0.00015 m Chon tw = 0.008 m

Chieu cao cua tiet dien xa

0.28667 m Chon h = 0.4 m

2 2

td 1 13 c1,15f

w1

1

x

hM.

W h

f

1x w

V.S

I .t

of f wb 0.5(b t )

of

f

b

t

1 E

2 f

w

w

h

t

E5,5

f

w

w

h

t

E3,2

f

w

w

h

t E2,5

f

ycx

c

MW

f

maxw

v c

Vt 1.5

h.f .

ycxWh k

k 1.15 1.2

max33d yc

Mh 5,5 W 5,5R

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Gia thiet chieu day canh xa ngang 0.01 m0.38 m0.39 m

0.00083 m2

"=> bf = 0.08263 m Chon bf = 0.25 mThoa man cac ieu kien

25 31.6228 OK

bf = 0.25 30tf= 0.3 OKCac ac trng hnh hoc

0.4 m 0.00049 m3 0.000240.39 m 0.00804 m2

0.38 m 0.00023 m40.25 m 0.00113 m30.01 m

0.008 m 26.4194

Do mx = 26.4194 > 20Nen tiet dien xa ngang c tnh toan kiem tra theo ieu kien ben

95562.2 210000 KN/m2 OK

Tai tiet dien au xa co momen va lc cat cung tac dung nen cankiem tra ng suat tng ng tai cho tiep xuc ban canh va ban bung87505.6 241500 KN/m2 OK

Trong o87473.2 KN/m2

1374.9 KN/m2

w

ft

w fh h 2t

3w w

f f 2c

fk

t hM h 2b t .

f 2 12 h

fkh

f

f

b

t E / f

h fh

wh fb

ft

wt

A

xI

xW

xx

M Am

N W

e xm m 20(v 1) h h

xn x

N M

A W

cf

2 2

td 1 13 c1,15f

w1

1

x

hM.

W h

f1x w

V.S

I .t

fS

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cot la bang nhau

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n

p

ng suat tiep

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THIE T KE CHI TIE T COT1. MOI NOI 2 PHAN COT

Chon c hai cap noi lc nguy hiem nhatM1 = KNmN1 = KNM2 = KNm

N2 = KNNoi lc ln nhat ma moi noi canh ngoai, canh trong phai chu

KN

KN

Kiem tra ng han oi au canh trong va canh ngoai

< f = KN/m2

< f = KN/m2

2. TNH DAM VAI

1 1

'

12

ng

N MS

b

2 2

'

12 tr

N MS

b

trtr

h h

S

l

ng

ng

h h

S

l

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7.1. LIEN KET COT VI XA NGANG (Lam theo Pham Minh Ha)Cap noi lc dung e tnh toan lien ket la cap gay keo nhieu nhat cho cac bulo

M = -806.81 KNm 806.811 KNmN = -962.95 KN 962.952 KNV = -112.47 KN 112.475 KN

a) Tnh toan bulong lien ket

Chon bulong cng o cao cap o ben 8.8, ng knh bulong d kien la d=2Bo tr bu long thanh 2 day vi khoang cach gia cac bu long tuan thu bang I.13 tPha canh ngoai cua cot bo tr mot cap sn gia cng cho mat bch, vi kch thBe day ts tw -- Chon ts = mBe rong(phu thuoc vao kch thc cua Chon ls= mChieu cao hs = 1,5.ls = mKha nang chu keo cua mot bulong

KNTrong o

KN/m2 (Tra bang I.9 trang 79)m2 (Tra bang I.11 trang 80)

Kha nang chu trt cua mot bulong cng o cao

KN

Trong o KN/m2KN/m2 (Tra bang I.12 trang 80)m2

1 (Trang 84 KC thep)0.25

1.7 (Bang 2.10 Trang 83 KC thep)

1 (Trang 83 KC thep)n = So bulong trong lien ket

Lc keo tac dung vao mot bulong day ngoai cung do momen va lc doc phan(do momen co dau am nen coi tam quay trung vi day bulong pha trong cung)

KN (Lay dau tr v N la lc nen)

hi la khoang cach t bulong th i trong lien ket en tam quayh1 la khoang cach gia 2 day bulong ngoai cung2 la so hang bulong

Do KN Xem LaiNen cac bulong u kha nang chu lcKiem tra kha nang chu cat cua cac bulong

KN Xem Lai

b) Tnh toan mat bchBe day cua mat bch xac nh t ieu kien chu uon

tb bntbN f .A

tbf

bnA

hb b1 f bb2

N f .A. . .n

hb ubf 0, 7f

ubf 2A d / 4

b1

b2

fn

1b max 2

i

Mh NN

2 h n

b maxN tbN

V

n cbN

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mt = m

m

c) Tnh toan ng han lien ket tiet dien cot (xa ngang) vi mat bchTong chieu dai tnh toan cua cac ng han pha canh ngoai (ke ca sn)

mLc keo trong ban canh ngoai do momen va lc doc phan vao

KN (Lay dau tr v N la lc nen)

Vay chieu cao can thiet cua cac ng han126000 KN/m2

m

Chieu cao can thiet cua cac ng han lien ket ban bung cot vi mat bch( coi cac ng han chu lc cat ln nhat nh cot xac nh t bang to hp n

m

Ket hp cau tao, chon chieu cao ng han la m7.2. MOI NOI NH XATrong bang to hp chon cap gay keo nhieu nhat cho cac bulong tai nh xa

M = KNmN = KNV = KN

Be day ts = mChieu cao hs = mBe ron ls= 1,5hs = m chon ls = mLc keo tac dung vao mot bulong day di cung do momen va lc doc phan v( do momen co dau dng nen coi tam quay trung vi day bulong pha tren cung )

KN

KN Xem Lai

Kha nang chu cat cua cac bu long c kiem tra theo cong thc

KN Xem Lai

Be day cua mat bch xac nh t ieu kien chu uon

mt = m

m

1 b max

1

t 1,1(b b )f

1 i

1

b Nt 1,1

(b h )f

wl

k

M NN

h 2

yc kf

w w min c

Nh

l ( f )

yc

f

w w min c

Vh

l ( f )

fh

1b max 2

i

Mh N cos V sinN

2 h n n

a a

b maxN ctbN

N sin V cos

n

a a cbN

1 b max

1

b Nt 1,1

(b b )f

b N

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Tong chieu dai tnh toan cua cac ng han pha canh di (ke ca sn)m

Lc keo trong ban canh di do momen, lc doc va lc cat gay ra

KN

Vay chieu cao can thiet cua cac ng han

m

Chieu cao can thiet cua cac ng han lien ket ban bung cot vi mat bch

m

Ket hp cau tao, chon chieu cao ng han trong lien ket m7.3. MOI NOI XA ( NHP) (Trang 76 )

Viec tnh toan va cau tao moi noi xa thc hien tng t nh tren.Do tiet dien xa ngang tai v tr noi giong nh nh mai va noi lc tai cho noi xa nNen khong can tnh toan kiem tra moi noi7.4. LIEN KET BAN CANH VI BAN BUNG COT VA XA NGANGLc cat ln nhat trong xa ngang la tai tiet dien au xa

V = KNChieu cao can thiet cua ng han lien ket gia ban canh va ban bung xa nga

m

Ket hp cau tao, chon chieu cao ng han mTien hanh tng t, chieu cao ng han lien ket ban canh vi ban bung cot

1(b h )f

wl

k

M N cos V sinN

h 2 2

a a

yc kf

w w min c

Nh

l ( f )

yc

f

w w min c

N sin V cosh

l ( f )

a a

fh

yc max f f

x w min c

V Sh

2I ( f )

fh fh

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ng tai nh cot.

mmrang 80c nh sau

ao

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oi lc )

o

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ho hn

ng

m

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Phng An Chat TaiCau kien Tiet die Noi Tnh Hoat Dmax Dmax T T Gio

Lc Tai tai trai phai trai phai trai

1 2 3 4 5 6 7Cot nh M 114.411 70.6158 -31.781 7.5289 -9.6 4.4911 -58.102

Cot N -35.747 -24.976 1.872 -1.872 0.671 -0.671 5.713Tren M 38.6334 25.3348 -106.74 -67.432 -18.752 -14.861 8.268

Vai N -39.997 -24.976 1.872 -1.872 0.671 -0.671 5.713Di M 44.3034 25.3348 323.57 35.8429 -18.752 -14.861 8.268

Vai N -51.337 -24.976 -858.75 -208.42 0.671 -0.671 5.713Chan M -176.79 -106.78 104.861 -182.87 135.587 -71.322 837.809Cot N -63.737 -24.976 -858.75 -208.42 0.671 -0.671 5.713

V -17.83 -10.654 -17.638 -17.638 12.447 -4.553 105.091Xa 1 au M -114.41 -70.616 31.7812 -7.5289 9.6 -4.4911 58.1022

Xa N -23.956 -14.964 -17.016 -17.687 -4.359 -4.6 1.041V -31.966 -22.658 5.007 1.324 1.477 0.157 5.617

Cuoi M -0.6989 2.4835 11.4229 -12.912 3.5934 -5.1297 35.264Xa N -22.496 -13.256 -17.016 -17.687 -4.359 -4.6 1.041

V -23.966 -13.298 5.007 1.324 1.477 0.157 5.617Xa 2 au M -0.6989 2.4835 11.4229 -12.912 3.5934 -5.1297 35.264

Xa N -22.496 -13.256 -17.016 -17.687 -4.359 -4.6 1.041V -23.966 -13.298 5.007 1.324 1.477 0.157 5.617

Cuoi M 64.2977 40.0937 -21.668 -21.668 -6.1697 -6.1697 -1.8479Xa N -17.54 -10.481 -17.015 -17.015 -4.359 -4.359 1.042

V 3.202 1.914 5.009 5.009 1.478 1.478 5.617

BANG THONG KE NOI LC CAC TRNG HP TAI T

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Giophai

861.8612

-5.713-45.307

-5.713-45.307

-5.713-723.42

-5.713-76.634-61.861

-1.009-5.623

-38.999-1.009-5.623

-38.999-1.009-5.623

-1.84791.042

5.617

RONG

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CAC TRNG HP TAI TRONG

1,2 1,7 1,8 1,3,5 1,4,6 1,2,7 1,2,8185.0269 56.3089 176.2723 79.23708 124.6281 125.67334 233.6404

-60.723 -30.034 -41.46 -33.58545 -37.90855 -53.0837 -63.367163.9682 46.9014 -6.6734 -68.036415 -31.315395 68.87592 20.6586-64.973 -34.284 -45.71 -37.83545 -42.15855 -57.3337 -67.617169.6382 52.5714 -1.0034 335.2771 87.401375 74.54592 26.3286-76.313 -45.624 -57.05 -781.8474 -229.06605 -68.6737 -78.9571

-283.5682 -234.8913 -900.2085 27.591445 -336.043315 -325.18227 -923.96775-88.713 -58.024 -69.45 -794.2474 -241.46605 -81.0737 -91.3571-28.484 87.261 -94.464 -43.40225 -36.69235 67.1633 -96.3892

-185.0269 -56.3089 -176.2723 -79.23708 -124.6281 -125.67334 -233.6404-38.92 -22.915 -24.965 -42.12475 -42.89995 -36.4867 -38.3317-54.624 -26.349 -37.589 -26.4546 -30.70715 -47.3029 -57.41891.7846 34.5651 -39.6979 12.064955 -16.034175 33.27385 -33.56285-35.752 -21.455 -23.505 -40.66475 -41.43995 -33.4895 -35.3345-37.264 -18.349 -29.589 -18.4546 -22.70715 -30.8789 -40.99491.7846 34.5651 -39.6979 12.064955 -16.034175 33.27385 -33.56285-35.752 -21.455 -23.505 -40.66475 -41.43995 -33.4895 -35.3345-37.264 -18.349 -29.589 -18.4546 -22.70715 -30.8789 -40.9949

104.3914 62.4498 62.4498 40.635655 40.635655 98.71892 98.71892-28.021 -16.498 -16.498 -35.7079 -35.7079 -26.0351 -26.03515.116 8.819 8.819 8.71595 8.71595 9.9799 9.9799

TO HP C BAN 1

BANG TO HP NOI LC

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1,2,3,5 1,2,4,6 1,2,3,5,7 1,2,4,6,8146.308702 51.20802 94.016722 106.8831

-56.280005 -25.236595 -51.138305 -30.378295-34.5681135 -133.6870955 -27.1269135 -174.4632155-60.530005 -25.236595 -55.388305 -30.378295328.98105 355.3362475 336.42225 314.5601275-731.27476 -957.809845 -726.13306 -962.951545

-88.9477995 -155.7332635 -141.2397795 -806.8107235-743.67476 -957.809845 -738.53306 -962.951545-50.433625 -43.504315 44.148275 -112.474915

-146.308702 -51.20802 -94.016722 -106.8831-53.775475 -47.327955 -52.838575 -48.236055-47.39794 -17.018735 -42.34264 -22.079435

13.0237195 -1.0376375 44.7613195 -36.1367375-50.778275 -45.619955 -49.841375 -46.528055-30.97394 -7.658735 -25.91864 -12.719435

13.0237195 -1.0376375 44.7613195 -36.1367375-50.778275 -45.619955 -49.841375 -46.528055-30.97394 -7.658735 -25.91864 -12.719435

79.0861895 -0.7033405 77.4230795 -2.3664505-43.32401 -42.14561 -42.38621 -41.207819.887155 11.384655 14.942455 16.439955

TO HP C BAN 2

BANG TO HP NOI LC

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Ty so cac momen quan tnh chon la:J1 = 1 ; J2 = J1/8 ; Jd = J2/2

Khong nhap trong lng ban thanChia xa ngang thanh 2 oan co o cng nh nhauChon Draw Special joint e ve nhng nut mau trang

Sau khi giai xong ta vao Display/Show tablesCo 1 bang xuat hien va chon nh trong bang

Trong o Select Analysis Cases chon nhng to hp can xuatnhng ay ta chon hetCopy bang excel ben sap va paste vao ung ngay o A33 th no mi tnh ung cBang excel o phai dai en dong 291Nh xoa t dong 140 en 243 va t 268 en hetNhap cac loai tai trong trong sap (Define/LoadCases) can theo th t nh sau (TT,HT,

TABLE: Element Forces - Frames

Frame Station OutputCas CaseType P V2 V3 T M2

Text m Text Text KN KN KN KN-m KN-m

1 0 TT LinStatic -63.737 -17.83 0 0 0

1 6.2 TT LinStatic -57.537 -17.83 0 0 0

1 12.4 TT LinStatic -51.337 -17.83 0 0 0

1 0 HT LinStatic -24.976 -10.654 0 0 0

1 6.2 HT LinStatic -24.976 -10.654 0 0 01 12.4 HT LinStatic -24.976 -10.654 0 0 0

1 0 GIOTRAI LinStatic 5.713 105.091 0 0 0

1 6.2 GIOTRAI LinStatic 5.713 66.899 0 0 0


1 0 GIOPHAI LinStatic -5.713 -76.634 0 0 0

1 6.2 GIOPHAI LinStatic -5.713 -54.686 0 0 0


1 0 DmaxTRAI LinStatic -858.753 -17.638 0 0 0

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1 6.2 DmaxTRAI LinStatic -858.753 -17.638 0 0 0

1 12.4 DmaxTRAI LinStatic -858.753 -17.638 0 0 0

1 0 DmaxPHAI LinStatic -208.422 -17.638 0 0 0

1 6.2 DmaxPHAI LinStatic -208.422 -17.638 0 0 0


1 0 T-TRAI LinStatic 0.671 12.447 0 0 0

1 6.2 T-TRAI LinStatic 0.671 12.447 0 0 01 12.4 T-TRAI LinStatic 0.671 12.447 0 0 0

1 0 T-PHAI LinStatic -0.671 -4.553 0 0 0

1 6.2 T-PHAI LinStatic -0.671 -4.553 0 0 0

1 12.4 T-PHAI LinStatic -0.671 -4.553 0 0 0

2 0 TT LinStatic -39.997 -17.83 0 0 0

2 0.6 TT LinStatic -39.397 -17.83 0 0 0

2 0.6 TT LinStatic -39.397 -17.83 0 0 0

2 2.125 TT LinStatic -37.872 -17.83 0 0 0

2 4.25 TT LinStatic -35.747 -17.83 0 0 0

2 0 HT LinStatic -24.976 -10.654 0 0 0

2 0.6 HT LinStatic -24.976 -10.654 0 0 0

2 0.6 HT LinStatic -24.976 -10.654 0 0 0

2 2.125 HT LinStatic -24.976 -10.654 0 0 0

2 4.25 HT LinStatic -24.976 -10.654 0 0 0







2 0.6 GIOPHAI LinStatic -5.713 -30.614 0 0 02 0.6 GIOPHAI LinStatic -5.713 -30.614 0 0 0



2 0 DmaxTRAI LinStatic 1.872 -17.638 0 0 0

2 0.6 DmaxTRAI LinStatic 1.872 -17.638 0 0 0




2 0 DmaxPHAI LinStatic -1.872 -17.638 0 0 0





2 0 T-TRAI LinStatic 0.671 12.447 0 0 0

2 0.6 T-TRAI LinStatic 0.671 12.447 0 0 0

2 0.6 T-TRAI LinStatic 0.671 -4.553 0 0 0

2 2.125 T-TRAI LinStatic 0.671 -4.553 0 0 0

2 4.25 T-TRAI LinStatic 0.671 -4.553 0 0 0

2 0 T-PHAI LinStatic -0.671 -4.553 0 0 0

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2 0.6 T-PHAI LinStatic -0.671 -4.553 0 0 0

2 0.6 T-PHAI LinStatic -0.671 -4.553 0 0 0

2 2.125 T-PHAI LinStatic -0.671 -4.553 0 0 0

2 4.25 T-PHAI LinStatic -0.671 -4.553 0 0 0

4 0 TT LinStatic -22.496 -23.966 0 0 0

4 3.04951 TT LinStatic -21.402 -17.966 0 0 0

4 3.04951 TT LinStatic -18.818 -3.798 0 0 04 3.30368 TT LinStatic -18.727 -3.298 0 0 0

4 6.60737 TT LinStatic -17.54 3.202 0 0 0

4 0 HT LinStatic -13.256 -13.298 0 0 0

4 3.04951 HT LinStatic -11.975 -6.278 0 0 0

4 3.04951 HT LinStatic -11.976 -6.276 0 0 0

4 3.30368 HT LinStatic -11.87 -5.691 0 0 0

4 6.60737 HT LinStatic -10.481 1.914 0 0 0











4 0 DmaxTRAI LinStatic -17.016 5.007 0 0 0

4 3.04951 DmaxTRAI LinStatic -17.016 5.007 0 0 0


4 3.30368 DmaxTRAI LinStatic -17.015 5.009 0 0 04 6.60737 DmaxTRAI LinStatic -17.015 5.009 0 0 0

4 0 DmaxPHAI LinStatic -17.687 1.324 0 0 0

4 3.04951 DmaxPHAI LinStatic -17.687 1.324 0 0 0




4 0 T-TRAI LinStatic -4.359 1.477 0 0 0

4 3.04951 T-TRAI LinStatic -4.359 1.477 0 0 0

4 3.04951 T-TRAI LinStatic -4.359 1.478 0 0 0

4 3.30368 T-TRAI LinStatic -4.359 1.478 0 0 0

4 6.60737 T-TRAI LinStatic -4.359 1.478 0 0 0

4 0 T-PHAI LinStatic -4.6 0.157 0 0 0

4 3.04951 T-PHAI LinStatic -4.6 0.157 0 0 0

4 3.04951 T-PHAI LinStatic -4.6 0.158 0 0 0

4 3.30368 T-PHAI LinStatic -4.6 0.158 0 0 0

4 6.60737 T-PHAI LinStatic -4.6 0.158 0 0 0

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11 0 TT LinStatic -23.956 -31.966 0 0 0

11 2.03301 TT LinStatic -23.226 -27.966 0 0 0

11 4.06602 TT LinStatic -22.496 -23.966 0 0 0

11 0 HT LinStatic -14.964 -22.658 0 0 0

11 2.03301 HT LinStatic -14.11 -17.978 0 0 0

11 4.06602 HT LinStatic -13.256 -13.298 0 0 0







11 0 DmaxTRAI LinStatic -17.016 5.007 0 0 0



11 0 DmaxPHAI LinStatic -17.687 1.324 0 0 0



11 0 T-TRAI LinStatic -4.359 1.477 0 0 0

11 2.03301 T-TRAI LinStatic -4.359 1.477 0 0 0

11 4.06602 T-TRAI LinStatic -4.359 1.477 0 0 011 0 T-PHAI LinStatic -4.6 0.157 0 0 0

11 2.03301 T-PHAI LinStatic -4.6 0.157 0 0 0

11 4.06602 T-PHAI LinStatic -4.6 0.157 0 0 0

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io trai,gio phai,D trai,D phai,T trai,T phai)

M3 FrameElem lemStation

KN-m Text m

-176.789 1 0

-66.2429 1 6.2

44.3034 1 12.4

-106.779 1 0

-40.7222 1 6.225.3348 1 12.4

837.8094 1 0

304.6435 1 6.2

8.268 1 12.4

-723.419 1 0

-316.324 1 6.2

-45.3068 1 12.4

104.8607 1 0

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214.2155 1 6.2

323.5703 1 12.4

-182.867 1 0

-73.512 1 6.2

35.8429 1 12.4

135.587 1 0

58.4176 1 6.2-18.7517 1 12.4

-71.3219 1 0

-43.0913 1 6.2

-14.8606 1 12.4

38.6334 2 0

49.3314 2 0.6

49.3314 3 0

76.5222 3 1.525

114.4111 3 3.65

25.3348 2 0

31.7274 2 0.6

31.7274 3 0

47.9753 3 1.525

70.6158 3 3.65

8.268 2 0

-7.8471 2 0.6

-7.8471 3 0

-38.8252 3 1.525

-58.1022 3 3.65

-45.3068 2 0

-26.3009 2 0.6-26.3009 3 0

16.2698 3 1.525

61.8612 3 3.65

-106.742 2 0

-96.1594 2 0.6

-96.1594 3 0

-69.2617 3 1.525

-31.7812 3 3.65

-67.4321 2 0

-56.8494 2 0.6

-56.8494 3 0

-29.9516 3 1.525

7.5289 3 3.65

-18.7517 2 0

-26.2197 2 0.6

-26.2197 3 0

-19.2759 3 1.525

-9.6 3 3.65

-14.8606 2 0

8/22/2019 Do An Thep 2

46/49

-12.1286 2 0.6

-12.1286 3 0

-5.1848 3 1.525

4.4911 3 3.65

-0.6989 4 0

63.2386 4 3.04951

63.2386 5 064.1403 5 0.25417

64.2977 5 3.55785

2.4835 4 0

32.3324 4 3.04951

32.3324 5 0

33.8534 5 0.25417

40.0937 5 3.55785

35.264 4 0

18.1355 4 3.04951

18.1355 5 0

16.7079 5 0.25417

-1.8479 5 3.55785

-38.999 4 0

-21.8523 4 3.04951

-21.8523 5 0

-20.4232 5 0.25417

-1.8479 5 3.55785

11.4229 4 0

-3.8457 4 3.04951

-3.8457 5 0

-5.1189 5 0.25417-21.668 5 3.55785

-12.9118 4 0

-16.9491 4 3.04951

-16.9491 5 0

-17.2862 5 0.25417

-21.668 5 3.55785

3.5934 4 0

-0.9116 4 3.04951

-0.9116 5 0

-1.2872 5 0.25417

-6.1697 5 3.55785

-5.1297 4 0

-5.6086 4 3.04951

-5.6086 5 0

-5.6487 5 0.25417

-6.1697 5 3.55785

8/22/2019 Do An Thep 2

47/49

8/22/2019 Do An Thep 2

48/49

8/22/2019 Do An Thep 2

49/49

-114.411 11 0

-53.489 11 2.03301

-0.6989 11 4.06602

-70.6158 11 0

-29.3089 11 2.03301

2.4835 11 4.06602

58.1022 11 0

46.6831 11 2.03301

35.264 11 4.06602

-61.8612 11 0

-50.4301 11 2.03301

-38.999 11 4.06602

31.7812 11 0

21.6021 11 2.03301

11.4229 11 4.06602

-7.5289 11 0

-10.2204 11 2.03301

-12.9118 11 4.06602

9.6 11 0

6.5967 11 2.03301

3.5934 11 4.06602-4.4911 11 0

-4.8104 11 2.03301

-5.1297 11 4.06602

do an thep 2

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