TCL Scope TRAIN

Syntax

TRAIN arg1 arg2 arg3 arg4

Description

The concept of load trains is general and applicable to various standards. A load train consists of a series of successive point and uniform loads, interspersed with intervals.

Many load trains are predefined in the standards. To facilitate the input, certain types can be entered with fewer parameters and the program will generate a general load train from those parameters for traffic evaluation.

Arguments

Minimum quantity: 2(1)

arg1

Value	Dimension	Meaning
name	TEXT	Name of the load train
END	KEYWORD	Scope will be closed.

arg2

Value	Dimension	Meaning
BEGIN	KEYWORD	Scope will be opened.
GENERAL	KEYWORD	General load train with free input of loads
TANDEMS	KEYWORD	Tandem system according to Eurocode LM1
UNIFORM	KEYWORD	Uniform load according to Eurocode LM1
ENCFG	KEYWORD	Centrifugal load according to Eurocode

arg3

Value	Dimension	Meaning
BEGIN	KEYWORD	Scope will be opened (arg2 != BEGIN)
ADD	KEYWORD	The content of the scope will be added to the load train (arg2 = BEGIN).
CLEAR	KEYWORD	The content of the load train is deleted before the scope is imported (arg2 = BEGIN).

arg4 (arg3 = BEGIN)

Value	Dimension	Meaning
ADD	KEYWORD	The content of the scope will be added to the load train.
CLEAR	KEYWORD	The content of the load train is deleted before the scope is imported.

Scopes

TRAFFIC

Examples

TRAIN "TS-300" TANDEMS BEGIN

TEXT "Tandem system Eurocode loadmodel"

PARAMS 300.0 1.20

TRAIN END

A load train with 2 point loads, spaced at a distance of 1.2 , is input.

TRAIN "UDL-9.0" UNIFORM BEGIN

TEXT "Uniform (area) load model"

PARAMS 9.0

TRAIN END

A load train with a uniform load is generated.

TRAIN "CFG-Euronorm" ENCFG BEGIN

TEXT "Centrifugal load Eurocode"

PARAMS 1200.0

TRAIN END

A load train with a point load is generated and used for the evaluation of the centrifugal load.

TRAIN "LM 71" GENERAL BEGIN

ITEMS BEGIN

QLOAD 96.8 0.00 FLOATING 1 NOFAVOR LLOAD

DISTANCE 0.80 0.80 1

FLOAD 302.5 1

DISTANCE 1.60 1.60 1

FLOAD 302.5 1

DISTANCE 1.60 1.60 1

FLOAD 302.5 1

DISTANCE 1.60 1.60 1

FLOAD 302.5 1

DISTANCE 0.80 0.80 1

QLOAD 96.8 0.00 FLOATING 1 NOFAVOR LLOAD

ITEMS END

TRAIN END

The general load train "LM 71" with a series of loads is created. The uniform loads are extended to the left and right over the entire unfavorable area. Point loads are applied at constant intervals.

TRAIN "Braking LM71" GENERAL BEGIN

ITEMS BEGIN

QLOAD 20.0 1.00 FLOATING 1 NOFAVOR LLOAD

ITEMS END

TRAIN END

The general load train "Braking LM71" with one uniform load is created. The load value 20.0 is taken as line load. The loaded area has a minimum length of 1.0 and is extended to the entire unfavorable area.

In this chapter

TCL Command TEXT

TCL Command PARAMS

TCL Scope ITEMS