Rlide R2 Series - Calculation of Road Alignment Elements

153
A1 80.000
A2 80.000
Enter the following data in the above way:
N 1750.000
E 1400.000
R 200.000
A1 0.000
A2 0.000
N 2000.000
E 1800.000
R 0.000
A1 0.000
A2 0.000
The format of the data above transmitted to computer is as follows:
START 0.000，1050.000，1100.000 CRLF
PT 1750.000，1300.000，100.000，80.000，80.000 CRLF
PT 1400.000，1750.000，200.000，0.000，0.000 CRLF
PT 1800.000，1800.000，2000.000 CRLF
2. CALCULATION ROAD ALIGNMENT ELEMENTS
(1) Calculation of the length of transition curve
L
2.1
=
R
A
2
2.1
L
2.1
: Length of clothoid
A
2.1
: Parameter of clothoid
R
: Radius
L
1
=
R
A
2
1
=
100
80
2
=64 m
L
2
=
R
A
2
2
=
100
80
2
=64 m
(2) Calculation of Deflection Angle

=
A
L
2
2
2

1
=
80
64
2
2
2
= 0.32 rad

deg

0.32

180
=18°20′06″


1
= -

2