Definition of the Moving Load Applied to the Bridge Floor

LMC in the box for selection of the

Robot Millennium program layouts Structure Model / Geometry

Selects the initial Robot Millennium layout.

Tools / Job preferences / Databases/ Vehicle Database

Open the Job preferences dialog box.

Pressing the Create new database icon results in opening the New Moving Load dialog box.

Enter:

in the Database field: User in the Database name field: User-defined database

in the Database description field: User-defined vehicles

in the Internal units of the database chose (ft) as Length units and (kip) as Force unit

Create Closes the New Moving Load dialog box.

OK Closes the Job Preferences dialog box.

Loads / Special loads / Moving Opens the Moving Loads dialog box.

Opens the Moving Loads dialog box and starts defining a new vehicle.

On the Symmetric Vehicles tab LMC on the New button

Defines a new vehicle.

Enter the vehicle name: Vehicle 1,

OK

Defines the name of the new vehicle.

LMC the first line in the table located in the lower part of the dialog box

Defines operating forces.

Select the load type: concentrated force

Selects a load type.

F = 13.5, X = 0.0, S = 1.75 Defines the value and location of the concentrated force. LMC the second line in the table

located in the lower part of the dialog box

Defines operating forces.

Select the load type: concentrated force

F = 6.75, X = 11.75, S = 1.75 Defines the value and location of the concentrated force. LMC the third line in the table located

in the lower part of the dialog box

Defines operating forces.

Select the load type: concentrated force

Selects a load type.

F = 13.5,X = 15.75, S = 1.75 Defines the value and location of the concentrated force. LMC the Save to database button Opens the Moving Load Databases dialog box.

Select User database and press the

OK button in the Moving load

databases dialog box

Saves the defined vehicle to the user-defined database.

Add, Close Adds the defined vehicle to the list of active vehicles and closes the Moving Loads dialog box.

In the Name field, enter the name of the moving load (case number 7)

Moving vehicle

Defines a name of the moving load.

LMC the Define button Starts defining the route of the Moving Crane vehicle; the

Polyline - Contour dialog box is opened. Activate the Line

option. In the Geometry dialog box define

two points determining the route of the moving load:

Point P1 (0,6.5,0) Point P2 (98, 6.5,0)

Apply, Close Closes the Polyline - Contour dialog box. LMC the Step field: {8}

Assume the default value of load direction: (0,0,-1) which means that the load will be operating in the Z direction and its sense will be opposite to the Z axis sense

Defines the step of a position change for the moving load and the load application direction.

LMC the Automatic option located in the Application Plane field

Selects the plane of load application.

Apply Generates the moving load case according to the adopted parameters.

Opens the Moving Loads dialog box and starts defining a new vehicle.

On the Symmetric vehicles tab LMC on the New button

Defines a new vehicle.

Type the vehicle name: Moving

surface load OK

Defines the name of a new vehicle.

LMC the first line in the table located in the lower part of the dialog box

Defines operating forces.

Select the load type: surface load Selects the load type. P = 0.9, X = 0.0, S = 0.0, DX = 4.0,

DY = 3.0

Defines the value and location of the surface load.

LMC the Save to database button Opens the Moving Load Databases dialog box. Select the User database, OK in the

Moving load databases

Saves the defined vehicle to the user-defined database.

Add, Close Adds the defined vehicle to the list of active vehicles and closes the Moving Loads dialog box.

In the Name field, type the name of the moving load (case number: 8):

Moving surface load

Defines the name of a moving load.

LMC the Define button Starts defining the route of the Moving Crane vehicle: the

Polyline - Contour dialog box is opened. Activate the Line

option. In the Geometry dialog box define

two points determining the route of the moving load:

Point P1(0,1.5,0) Point P2 (98,1.5,0)

Defines the vehicle route.

Apply, Close Closes the Polyline - Contour dialog box. LMC the Step field

{8}

Assume the default value of load direction: (0,0,-1) which means that the load will be operating in the Z direction and its sense will be opposite to the Z axis sense

Defines the step of a position change for the moving load and the load application direction.

LMC the Automatic option located in the Application Plane field

Selects the plane of load application.

Apply, Close Generates a second moving load case according to the adopted parameters and closes the Moving Loads dialog box.

8.2 Structure Analysis

Tools / Job Preferences / Structure Analysis

Opens the Job Preferences dialog box

Switch off the option: Automatic

freezing of results of structure calculations,

OK

Switches off freezing of structure calculations results, closes the Job Preferences dialog box.

Starts calculations of the defined structure. Once the calculations are completed, the title bar of the viewer will present the following information: Finite Elements Results -

available.