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UNIVERSITATEA TEHNICA ,,GH.ASACHI``DIN IASI FACULTATEA DE CONSTRUCTII SI INSTALATII

SPECIALIZAREA:INFRASTRUCTURI MODERNE PENTRU TRANSPORTURI

Analiza si mni!"iza"#a $s!%"il" in in&"as!"%$!%"a

!"ans'"!%"il" 

L%$"a"#a n". (

  MASTERAND: )la*a Vasil#

1

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UNIVERSITATEA TEHNICA ,,GH.ASACHI``DIN IASI FACULTATEA DE CONSTRUCTII SI INSTALATII

SPECIALIZAREA:INFRASTRUCTURI MODERNE PENTRU TRANSPORTURI

Problema 1.

Tim'%l +# +#'lasa"# '# %n s#$!" +# +"%m $a"# $n#$!#az +% $#n!"# +# a$!i-i!a!#

%"m#az #$%ai# "#'"#z#n!/n+ &%n$ia +# s#"-i$i%:

  ! 0 12 3 4.45& 

Un+# ! 6i & s%n! 7n min%!# "#s'#$!i- -#8i$%l# '# ". F%n$ia +# $#"#"# 7n!"# $#l# +%

$#n!"# #s!#:

 & 0 9444 154!.

a; "#'"#z#n!ai *"a&i$ #$%aiil# 6i s!a<ilii !im'%l +# +#'lasa"# 6i -l%m%l +# !"a&i$ in

#$8ili<"%.

 <; +a$ l%n*im#a +"%m%l%i #s!# +# (4 +# =ilm#!"i, $a"# #s!# -i!#za m#+i# +# +#'lasa"#

 '# a$#s! s#$!">

a; ! 0 12 3 4.45& 

17

19

21

23

25

27  27.96

t = 15 + 0.02f 

2

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UNIVERSITATEA TEHNICA ,,GH.ASACHI``DIN IASI FACULTATEA DE CONSTRUCTII SI INSTALATII

SPECIALIZAREA:INFRASTRUCTURI MODERNE PENTRU TRANSPORTURI

  &09444?154!

3520

3040

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1600

1120

640

3520

3040

2560

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f=4000-120t

! 0 12 3 4.45& 

& 0 9444 154!

& 0 9444 154 @ 12 3 4.45&;

& 0 9444 1B44 5.9& (.9& 0 5544 & 0 9.4 9B -#8i$%l#"a

& 0 9B -#8i$%l#"a

! 0 12 3 4.45& 0 12 3 4.45 @ 9B 0 5. 5B min

 ! 0 5B min 0 4.9 8

 <; + 0 (4 =m

  ! 0 5B min 0 4.9 8  - 0 +!- 0 (44.9 0 (.B( =m8

3

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UNIVERSITATEA TEHNICA ,,GH.ASACHI``DIN IASI FACULTATEA DE CONSTRUCTII SI INSTALATII

SPECIALIZAREA:INFRASTRUCTURI MODERNE PENTRU TRANSPORTURI

Problema 2.

O $m'ani# +# !"ans'"! a#"ian a $al$%la! $s!%l '# l$ '#n!"% an%mi! "%! $a &iin+:

 ' 0 544 3 4.45n. N%m"%l +# '#"san# $a"# $%m'" <il#! '# "%!a "#s'#$!i- a &s! *si! $a

&iin+: n 0 2444 54', %n+# ' #s!# '"#%l 7n #%" 6i n #s!# n%m"%l +# l$%"i -/n+%!# zilni$.

a; D#!#"minai '"#%l +# #$8ili<"% 7n #%" 6i n%m"%l +# <il#!# -an+%!# '# zi.

 <; La $s!%l <il#!#l" $m'ania a+a%* '"&i!%l '"'"i%. D#!#"minai $a"# #s!# ma"a

 '"$#n!%al '#n!"% $a"# s# <in# '"&i!%l <"%! maJim.

a; ' 0 544 3 4.45n

n 0 2444 54'

  n 0 2444 54 @ 544 3 4.45n; n 0 2444 9444 4.9n   1.9n 0 1444 n 0 19.5 12 l$%"i

n 0 12 l$%"i

  ' 0 544 3 4.45n 0 544 3 4.45 @ 12 0 519.(4 #%"

 ' 0 519.(4 #%"

b) MPB=PB/CA

  PB=715*214.28=>PB=15320.2 E

  CA=2*PB=>CA=306420.4 E

  MPB=15320.2/306420.4=>MPB=1/2

Ma"a '"&i!%l%i <"%! #s!# +# 24K.

4