lucr 3
4
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 V asil# 1
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Transcript of lucr 3
7/21/2019 lucr 3
http://slidepdf.com/reader/full/lucr-3 1/4
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%$"a"#a n". (
MASTERAND: )la*a Vasil#
1
7/21/2019 lucr 3
http://slidepdf.com/reader/full/lucr-3 2/4
UNIVERSITATEA TEHNICA ,,GH.ASACHI``DIN IASI FACULTATEA DE CONSTRUCTII SI INSTALATII
SPECIALIZAREA:INFRASTRUCTURI MODERNE PENTRU TRANSPORTURI
Problema 1.
Tim'%l +# +#'lasa"# '# %n s#$!" +# +"%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#$!">
a; ! 0 12 3 4.45&
17
19
21
23
25
27 27.96
t = 15 + 0.02f
2
7/21/2019 lucr 3
http://slidepdf.com/reader/full/lucr-3 3/4
UNIVERSITATEA TEHNICA ,,GH.ASACHI``DIN IASI FACULTATEA DE CONSTRUCTII SI INSTALATII
SPECIALIZAREA:INFRASTRUCTURI MODERNE PENTRU TRANSPORTURI
&09444?154!
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f=4000-120t
! 0 12 3 4.45&
& 0 9444 154!
& 0 9444 154 @ 12 3 4.45&;
& 0 9444 1B44 5.9& (.9& 0 5544 & 0 9.4 9B -#8i$%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
7/21/2019 lucr 3
http://slidepdf.com/reader/full/lucr-3 4/4
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
