Xaydung360.Vn SV- Du Toan Xay Dung Cong Thuc BQL

8/13/2019 Xaydung360.Vn SV- Du Toan Xay Dung Cong Thuc BQL

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CNG THCNG THTNH TIN LTNH TIN L

11. Cng th. Cng th c tnh hnh phc tnh hnh ph ngng

negis

tered


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CNG THCNG TH

TNH TIN LTNH TIN L


an c

bdt = a x b

cv = (a+b)x2negis

tered


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CNG THCNG TH

TNH TIN LTNH TIN L


n am g c

h

a

dt= a x h

2Chu vi= a+b+c

cb

negis

tered


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CNG THCNG TH

TNH TIN LTNH TIN L


n am g c

h

a

dt= a x h

2 negis

tered


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11. Cng th. Cng th c tnh hnh phc tnh hnh ph ngngHnh tam gic vung

2

=2

+2

a

cb

c = a2 + b2

negis

tered


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CNG THCNG TH

TNH TIN LTNH TIN L


n am g c

h

a

dt= a x h

2 negis

tered


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CNG THCNG TH

TNH TIN LTNH TIN L


a

n ang

hdt= (a+b)xh

2

bn

egistere

d


10/41

22. Cng th. Cng th

dtxq= ( xd)xhd

h

= x x

4

V= ( x r2

)xh

negistere

d


11/41

22. Cng th. Cng th

negis

tered


12/41

negis

tered


13/41

22. Cng th. Cng th

aa

xq x x

a

V= axaxanegis

tered


14/41

22. Cng th. Cng th

= + h

a

V= a x b x hb

negistere

d


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V= L x h x bn

egistere

d


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V= L x h x bn

egistere

d


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bbc i

L

Vkx= (L x h - bc ix hc i - b x h ) x b

negistere

d


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e

h

b

V= L x (( bxe+2 x (h-e)xe)

V= L x e x ( b+2 x (h-e))

negistere

d


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e

b

V= L x (( b-2xe)xe+2xhxe)V= L x e x (( b-2xe)+2xh)

V= L x (( bxh-(b-2xe)x(h-e))

negistere

d


21/41

V= L x h x b2

negis

tered


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22. Cng th. Cng th

3

S= AxB

s= axb negis

tered


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22. Cng th. Cng thchp

V= h(S1+S2+4S3)6

S1= AxB

S2= axb t d i)

t trn)

S3= (a+A)x(b+B)2 2

u S1 v S2)

negis

tered


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y

V= h.[A.B+a.b+(a+A).(b+B)]6

S1= AxB

S2= axb

negis

tered


25/41

negis

tered


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33. Cng th. Cng th c tnh khc tnh kh i li l ngng

Kh i l ng = th ch x kh i l ng ring

(Kg) (m3) (Kg/m3)

Kh i l ng= di n tch ) y vt thx chi u cao (chiu di)

x kh i l ng ring

Kh i l ng= ti t di n vt thx chi u cao (chiu di) x kh i l ng ring

negistere

d


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V t th s t thp c kh i l ng ring :

7850 kg/m3

V t th btn c t th c kh i l n rin : 2500 kg/m3

V t th nhm (Al)c kh i l ng ring :

2600-2700 kg/m3

V t th m (Zn) c kh i l ng ring :

7000 kg/m3negis

tered


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V t th ! ng (Cu) c kh i l ng ring :

8900 kg/m3

V t th n Au c kh i l n rin :19300 kg/m3

negis

tered


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ng knh ngoi (D) (m)

Kh i l ng = 3.14 x D2x chi u di thanh L x kh i l ng ring

4

(Kg) (m3) (Kg/m3)

(m)(m2)negis

tered


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a

Kh i l ng = a x a xchi u di thanh L xkh i l ng ring

a

(Kg)(m3) (Kg/m

3)

(m)(m2)negis

tered


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ng knh trong (d) (m)

ng knh ngoi (D) (m)

ng knh trung bnh (dtb) (m)

Chi u dy ng e (m) = D - d

e

Kh i l ng = 3.14 x dtb x e x chi u di ng L x kh i l ng ring

(Kg) (m3) (Kg/m3)

Dtb = D-e = d+e

(m)(m2)negis

tered


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negis

tered


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(A) (m) ng tim (tb) (m)

Chi u dy e (m) = A - a2

(a) (m)

(B)(m)

e

Kh i l ng = [(A e )+(B - e)]*2 x e x chi u di ng L x kh i l ng ring

Kh i l ng = (A e )*4 x e x chi u di ng L x 7850

(Kg) (m3) (Kg/m3)negis

tered


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negis

tered


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33

(0,1) (m) ng tim (tb) (m)

Chi u dy e (m) = A - a = 0,1-0,0952

(0.095) (m)

,20)(m)

e = 0,0025 = 2,5 mm

2

11,578= [(0,1 0,0025 )+(0,2 0,0025)]*2 x 0.0025 x 1 x 7850

7,654 = (0,1 0,0025)*4 x 0,0025 x 1 x 7850

(

(Kg) (m3) (Kg/m3)

ng (chi u di ng L)negis

tered


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negis

tered


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negis

tered


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negis

tered


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negis

tered


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negis

tered


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negis

tered

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Xaydung360.Vn SV- Du Toan Xay Dung Cong Thuc BQL