1.4. desain alinemen horizontal perhitungan tikungan ... · modul iv halaman - 1/46 contoh dan...

1.4. Desain Alinemen Horizontal

Perhitungan Tikungan Lingkaran PenuhL i l l th f i tLc = circular length from point

TC to point CT (m)

= ∆ R= ∆ R

Ts = tangent Length from pointg g pTC to point IP (m)

= R tan(½ ∆)( )

Es = offset distance from pointIP to point CC (m)IP to point CC (m)

= R {sec(½ ∆) - 1}

Modul IV Halaman - 1/46Contoh dan Latihan


Perhitungan Tikungan Spiral- Lingkaran- SpiralThe general equations of spiral curve from point TS to point SC are:

l 2

θ = ----------2 R Ls

l 5

x = l - -------------40 R2 Ls2

l 3

y = ----------6 R Ls

Where: l = curve length measured from

point TS to any point on thespiral curve (m)

Modul IV Halaman - 2/46

Ls = spiral curve length (m)


Perhitungan Tikungan Spiral PenuhThe equations used to calculate the elements of the full spiral curveof the full spiral curve and the spiral-circle-spiral curve are the psame, except that:

∆c = 0∆c = 0

θs = ½ ∆

Ls = 2 θs R

Modul IV Halaman - 3/46Contoh dan Latihan


Kriteria Pemilihan Tipe Tikungan

ya

tidakya

tidakya

tidak

tid ktidak


Latihan


Kriteria Desain Tikungan


Latihan


Gambar Tikungan – Lingkaran Penuh



Gambar Tikungan – Spiral



Diagram Superelevasi Sp-Lingkaran-Sp

Figure 4-18a : Superelevation diagram of a typical spiral-circle-spiral curve


Figure 4 18a : Superelevation diagram of a typical spiral circle spiral curve


Diagram Superelevasi Spiral Penuh

Figure 4-18b : Superelevation diagram of a typical full spiral curve


Figure 4 18b : Superelevation diagram of a typical full spiral curve


Diagram Superelevasi Lingkaran Penuh

Figure 4-18c : Superelevation diagram of a typical full circle curve


Figure 4 18c : Superelevation diagram of a typical full circle curve

Latihan


Contoh Proses Iterasi No.2/6

Adamasalah Dengan IP1 ?g 1




Apa inilebih baik ?




AdaAdaMasalah dgnIP5 dan IP6?




Apa iniLebih baik ?


1.4. desain alinemen horizontal perhitungan tikungan ... · modul iv halaman - 1/46 contoh dan...

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