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Users Manual for Program TRC_TRACCUR  

Table of Contents

Introduction

Program TRC_TRACCUR adds or removes designed track geometry to a track-file. Input and output to program TRC_TRACCUR are trac- or trax-files.

Input data commands

Input data is read in free format, valid separators between the input values are <space>, <comma>, <tab>, <equal sign> or <carriage return>. The commands can be written both in lower and upper case letters. The operation of the program is controlled by the commands described below; some of the commands also need arguments.

INFIL

Input data file
The file is read in free format. The columns in the file shall have the same contents as in a trac-file.
Declared = Character*132    Default = Blank

UTFIL

File containing the output data, written in *.trac-format.
Declared = Character*132    Default = Blank

NXCURV

Number of break points in vector XCURVE to be considered.
Declared = Integer*4    Default = 0

XCURVE

Breakpoints defining where transition- and circular- curves starts and ends.
Declared = Real*4(38)    Default = 38*0. [m]

TCURVE

Type of transition curves to be used for the designed track geometry:

'R'	Clothoid type of transition curve, the curvature is a linear function of chainage.
'S'	Helmert type of transition curve, the curvature has the shape of two second-degree parabolas such that the curvature and its derivative are continuous functions (The Helmert curve is in Germany also known as the Schramm curve).

Declared = Character*1(19)    Default = 19*'R'

HCURVE

Designed track cant geometry to be added to the track irregularities read from file INFIL. Declared = Real*4(20)    Default = 20*0. [mm]

ZCURVE

Designed track vertical lift to be added to the track irregularities read from file INFIL. Declared = Real*4(20)    Default = 20*0. [mm]

Example of an input data file

Following example: Master.trc_traccurf can be used as a master file:

                                                 
 ##                                              
 ##      Input data for program trc_traccur      
 ##                                              
                                                 
   INFIL= $gentrc/K0_4a21-n-k.trac               
   UTFIL= test/curv.trac                         
 #                                               
   NXCURV = 4,                                   
   XCURVE = 20, 64,  75, 85.                     
   TCURVE =  'r',      'r',                      
   HCURVE = 0,140,-140,                          
   ZCURVE = 0, 70, -70,