Moving Load Cases
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Use the entered vehicle load classes and the traffic lanes to create moving load cases. Define type of vehicle, number of lanes, and the method to be used in moving load analysis |
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From the Main Menu select Load > Moving Load > Moving Load Cases. |
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Click
Select
the moving load case to be modified in the dialog box and click
Select
the moving load case to be deleted in the dialog box and click
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A1. Theoretically, the maximum possible moment due to a group of wheel loads does not occur at the center of simple span. We can find the location of maximum possible moment in the simple span by applying two things. 1. The maximum possible moment will occur at the wheel load which is closest to the resultant load of group of wheel loads. In case where the amount of the wheel load closest to the resultant load is small, the maximum possible moment can occur at the second closest wheel load. In your case, the group of loads consists of just two wheel loads with the same amount. If we denote it as P1 and P2, the closest wheel load can be either P1 or P2. If we take the closest wheel load as P1, the maximum possible moment will occur at P1. 2. If we denote the distance between the closest wheel load (P1) and the resultant load (R) as ‘d’, the location of P1 which causes the maximum possible moment will be d/2 away from the center of span as shown below. |
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