Jembatan Pipa

PERHITUNGAN STRUKTUR JEMBATAN PIPA AIR BERSIH 1.5 m f 150

CNP

IWF o

11,25

10

15

10

35

B

C

A

D

0.15 Kayu

Pipa

CNP Baja L

IWF

40 1. Pembebanan Beban Mati : Beban Pipa Diameter 150 mm Beban Air Didalam Pipa Beban Canal U 150.75.6 Beban Baja Siku 50.50.5 Beban IWF 250.125.6.9 q Beban Hidup P 2. Momen primer Akibat beban mati MBA = - MCD = 1/8*q*LAB 2

cm

= = = = = =

19.20 17.68 8.25 3.14 29.60 77.87

kg/m kg/m kg/m kg/m kg/m kg/m

=

100.00

kg

=

0.13

x

77.87

x

10^2

=

MBC = - MCB = 1/12*q*LBC 2

=

0.08

x

77.87

x

15^2

=

Momen akhir Momen Tumpuan MT(DL) = (MBA + MBC)/2

=

+

1460.07)

=

1,216.72

kgm

(973.38

Momen Lapangan ML(DL) = (1/8*q*LBC2) - MT

=

2,190.10

-

1,216.72

=

973.38

kgm

MBA = - MCD = 3/16*p*LAB

=

0.19

x

100.00

x

10.00

=

MBC = - MCB = 1/8*p*LBC

=

0.13

x

100.00

x

15.00

=

Momen akhir Momen Tumpuan MT (LL) = (MBA + MBC)/2

=

=

187.50

kgm

Momen Lapangan ML (LL) = (1/4*p*LBC) - MT

=

Akibat Beban Hidup

Momen maksimum =

(187.5

+

187.5)

375.00

-

187.50

=

187.50

kgm

187.500 kgm

Kombinasi momen akibat beban hidup dan beban mati

MT (LL) + MT (LL) =

=

1,216.72

+

187.50

=

1,404.22

kgm

ML (LL) + ML (LL) =

=

973.38

+

187.50

=

1,160.88

kgm

Momen maksimum

=

1,404.22

kgm

Kontrol Tegangan Profil yang dipakai adalah WF (250x125x6x9) 3 Wx = 324 cm 3 Wy = 47 cm 2 F = 37.6 cm 4 Ix = 4050 cm 4 Iy = 294 cm t ijin = 1400 kg/cm2 tx = M maksimum / W x tx =

140,422.25

:

324

=

Kontrol Lendutan Lendutan Ijin F = (1/500)x Panjang Bentang F =L*100/500 F = Lendutan yang terjadi :

3 cm (lendutan ijin)

2 433.402 kg/cm < t =

2 1400 kg/cm

OK

F=((5/384)xqxL^4) /El)+((1/48)xPxL^3/El) q P E Ix L

= = = = =

F

=

0.78 100.00 2.10E+06 4,050.00 1,500.00

kg/cm kg Kg./cm2 cm4 cm

6.86 cm < F ijin 3.00 cm

Lawan lendut yang diperlukan adalah = Reaksi Perletakan R = q*Ltotal/2 =

1,362.73 kg

7.00 cm

Perlu lawan lendut

D

973.38 kgm 1,460.07 kgm

kgm

kgm

187.50 kgm 187.50 kgm

kgm

kgm

kgm kgm

PERHITUNGAN STRUKTUR JEMBATAN PIPA AIR BERSIH 1.5 m f 150

CNP

IWF 7

B

A 0.15 Kayu

Pipa

CNP Baja L

IWF

40 1. Pembebanan Beban Mati : Beban Pipa Diameter 150 mm Beban Air Didalam Pipa Beban Canal U 150.75.6 Beban Baja Siku 50.50.5 Beban IWF 250.125.6.9 q Beban Hidup P 2. Momen primer Akibat beban mati MBA = - MCD = 1/8*q*LAB 2 MBC = - MCB = 1/12*q*LBC Momen akhir Momen Tumpuan MT(DL) = (MBA + MBC)/2 Momen Lapangan

2

cm

= = = = = =

19.20 17.68 8.25 3.14 29.60 77.87

=

100.00

kg

=

0.13

x

77.87

x

^2

=

=

0.08

x

77.87

x

7^2

=

=

158.99

=

(0

kg/m kg/m kg/m kg/m kg/m kg/m

+

317.97)

kgm

ML(DL) = (1/8*q*LBC2) - MT

=

476.96

-

158.99

=

317.97

kgm

MBA = - MCD = 3/16*p*LAB

=

0.19

x

100.00

x

-

=

MBC = - MCB = 1/8*p*LBC

=

0.13

x

100.00

x

7.00

=

Momen akhir Momen Tumpuan MT (LL) = (MBA + MBC)/2

=

=

43.75

kgm

Momen Lapangan ML (LL) = (1/4*p*LBC) - MT

=

Akibat Beban Hidup

Momen maksimum =

(0

+

87.5)

175.00

-

43.75

=

131.25

kgm

131.250 kgm

Kombinasi momen akibat beban hidup dan beban mati

MT (LL) + MT (LL) =

=

158.99

+

43.75

=

202.74

kgm

ML (LL) + ML (LL) =

=

317.97

+

131.25

=

449.22

kgm

Momen maksimum

=

449.22

kgm

Kontrol Tegangan Profil yang dipakai adalah WF (250x125x6x9) 3 Wx = 324 cm 3 Wy = 47 cm 2 F = 37.6 cm 4 Ix = 4050 cm 4 Iy = 294 cm t ijin = 1400 kg/cm2 tx = M maksimum / W x tx =

44,922.01

:

324

=

Kontrol Lendutan Lendutan Ijin F = (1/500)x Panjang Bentang F =L*100/500 F =

1.4 cm (lendutan ijin)

Lendutan yang terjadi : F=((5/384)xqxL^4) /El)+((1/48)xPxL^3/El)

2 138.6482 kg/cm < t =

2 1400 kg/cm

OK

q P E Ix L

= = = = =

F

=

0.78 100.00 2.10E+06 4,050.00 700.00

kg/cm kg Kg./cm2 cm4 cm

0.37 cm < F ijin 1.40 cm

Lawan lendut yang diperlukan adalah = Reaksi Perletakan R = q*Ltotal/2 =

-

kg

0.00 cm

OK

-

kgm

317.97 kgm

kgm

kgm

-

kgm

87.50 kgm

kgm

kgm

kgm kgm