PELAT CANGKANG
KELOMPOK 1
METODE STIGLAT/WIPPEL
Momen Maksimum (perletakan sederhana)
METODE STIGLAT/WIPPEL
Momen Maksimum (arah x)
Momen Maksimum (arah y)
METODE STIGLAT/WIPPEL
Ly = 4 m
382,84 kgm
Lx = 5 m
Mx = 538,74 kgm
METODE PIEPER/MARTIN
Momen Lapangan
berdasarkan tabel dan hasil interpolasi untuk Ly/Lx = 1,25 di peroleh fx = 17,95dan fy = 30.
Maka,
METODE M.LEVY
Lx = 5 m
Mx = 3846,15kgm
Ly = 4 m
-2786,1kgm
METODE M.LEVY
Mmax (arah x)
Mmax (arah y)
METODE M.LEVY
Momen Maksimum
Mmax (arah x)
METODE NAVIER
Mmax (arah y)
Ly = 4 m
1.115 x 10^6 kgm
Lx = 5 m
Mx = 223 x 10^6 kgm
METODE NAVIER
METODE M.LEVY
Elastisitas Beton
Kekakuan Pelat
METODE M.LEVY
Lendutan maksimum
METODE PIEPER/MARTIN
Lx = 5 m
Mx = 749,303kgm
Ly = 4 m
286,933 kgm
HIRSCHFELD JEPIT - JEPIT
Beban Mati (WD)
Berat sendiri pelat = 0,12 x 24 = 2,88 kN/m2
Beban Hidup (WL)
WL = 250 Kg/m2 = 2,50 kN/m2
Wu = WD + WL
= 2,88 + 2,5
= 5,38 kN/m2 = 538 kg/m2
METODE PIEPER/MARTIN
Momen Lapangan
berdasarkan tabel dan hasil interpolasi untuk Ly/Lx = 1,25 di peroleh fx = 24,2 dan fy = 41,95
Maka,
METODE PIEPER/MARTIN
Momen Tumpuan
berdasarkan tabel dan hasil interpolasi untuk Ly/Lx = 1,25 di peroleh sx = 15 dan sy = 17,75
Maka,
METODE PIEPER/MARTIN
Ly = 4 m
My = 205,197kgm
My =484,958 kgm
METODE PIEPER/MARTIN
Lx = 5m
Mx = 555,785 kgm
Mx = 896,667 kgm
METODE STIGLAT/WIPPEL
Lx = 5m
Mx = 257,05 kgm
Mx = 154,48 kgm
METODE STIGLAT/WIPPEL
Ly = 4 m
My = 169,73kgm
My =599,76 kgm
METODE STIGLAT/WIPPEL
Momen Tumpuan Arah y
Dari tabel diperoleh αxs =-18,7; αys =-22,2
Momen Tumpuan Arah y
Arah y
Py = (1 – K)p
= (1 – 0,291) 538
= 381,442 kg/m
My
Ly = 4 m
My = 254,295 kgm
Mx = 508,589kgm
TEORI HIRSCHFELD
Lx = 5m
Mx = 163,081 kgm
Mx = 326,162 kgm
TEORI HIRSCHFELD
METODE STIGLAT/WIPPEL
Momen Lapangan Arah x
Dari tabel diperoleh αxf =46,3; αyf =87,3
Momen Lapangan Arah y
METODE NAVIER
Momen Maksimum
Mmax (arah x)
Arah X
Px = K x p = 0,291 x 538 = 156,558 kg/m
Mx
METODE NAVIER
Lendutan maksimum
Lx = 5 m
Mx = 489,244 kgm
Ly = 4 m
762,884 kgm
TEORI HIRSCHFELD
Soal
Turunkan dengan seksama dari mana persamaan pelat
2. Pelat, tebal 12 cm, Fc = 30 Mpa, beban hidup 250 kg/m2. Hitung dan gambarkan Mx(max), My(max) dengan Wmax, dengan teori Hirschfeld, Navier, M. Levy, Stiglat/Wipper dan Pieper/Martins. Berikan masukan dan kesimpulan. Jika diketahui Ly = 4 m, Lx = 5 m dan kondisi perletakan sederhana
3. Soal 2, jika perletakan seluruh sisinya jepit. Hitung dan gambarkan Mx(max), My(max) dengan Wmax, dengan teori Hirschfeld, Stiglat/Wipper, dan Pieper /Martins. Berikan Masukan dan kesimpulan.
Ly
Lx
Arah X
Px = K x p = 0,291 x 538 = 156,558 kg/m
Mx
Arah y
Py = (1 – K)p
= (1 – 0,291) 538
= 381,442 kg/m
My
Wu = WD + WL
= 2,88 + 2,5
= 5,38 kN/m2 = 538 kg/m2
Lendutan
HIRSCHFELD [sederhana]
Beban Mati (WD)
Berat sendiri pelat = 0,12 x 24 = 2,88 kN/m2
Beban Hidup (WL)
WL = 250 Kg/m2 = 2,50 kN/m2
Lendutan
METODE NAVIER
Elastisitas Beton
Kekakuan Pelat
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