Function
- Enter the traffic surface lanes for moving load analysis.
Call
From the Main Menu select [Load] tab > [Type : Moving Load] > [Moving Load Analysis Data] group > [Traffic Surface Lanes] > [Traffic Surface Lanes]
Input
The Add Button
To enter new or additional traffic surface lanes
Modify Button
To modify previously entered traffic surface lanes
Select a Lane Name for which lane information is to be modified.
The Delete Button
To delete previously entered traffic surface lanes
Select a Lane Name for which lane information is to be deleted.
The Copy Button
To copy previously entered traffic surface lanes
Select a Lane Name for which lane information is to be copied.
Lane Name
Enter the name of a traffic surface lane.
Traffic Lane Properties
Lane Width
Enter the width of a traffic surface lane.
Offset Distance to lane center
Enter the distance from the line of traffic lane nodes to the center of the traffic surface lane. Viewing towards the moving direction of the traffic surface lane, a positive eccentricity (+) refers to an offset to the right from the traffic lane nodes and a negative eccentricity (-) refers to an offset to the left from the traffic lane nodes.
Impact Factor
Enter the impact factor for the entered traffic surface lane being defined.
Skew
Enter the skewed angles at the start and end of the bridge referring to the diagram.
Moving Direction
Define the direction of the vehicular loading.
Forward : consider only the direction from the start to end.
Backward : consider only the direction from the end to start.
Both : consider both vehicular loading direction.
Selection by
Specify the method of defining a traffic lane node line to define a traffic surface lane.
2 points
Use the coordinates of two points to enter a traffic lane node line.
All the nodes connecting these two points constitute a traffic lane node line.
Picking / Number
Select all the nodes along the traffic lane node line.
Use the mouse or directly enter the node numbers to create a traffic lane node line.
Note
The traffic surface lane is defined by the traffic lane node line, eccentricity and traffic lane width. The traffic surface lane is created by placing the traffic lane center offset by an eccentricity distance from the traffic lane node line. Extending 1/2 of the lane width on both sides of the lane center while looking towards the moving direction defines the traffic surface lane.
Operations
Entry is reflected when Selection by Number is used.
The Add Button : Add selected nodes to the traffic lane node line.
The Insert Button : Insert selected nodes to become a part of the previously entered traffic lane node line.
The Delete Button : Delete selected nodes from the traffic lane node line.