Good afternoon,
I have attached a screenshot of the analysis of prestressed girder bridge. I just wanted to know what the difference is between the LL+I: M+, LL+I: M- and LL+I: M. I understand that the first two are the positive and negative moments due to the live load and the impact but I can't figure out what LL+I: M is. Your help is greatly appreciated.
1) As per the user manual this is the explanation given :
M : Maximum moment due to a particular load component at a section.V : Corresponding shear associated with the above moment. This is the maximum absolute valuefor shear
M+ : Maximum positive moment due to live load, pedestrian load, or combined total maximumpositive moment.V : Shear corresponding to M+. This is the maximum absolute value for shear.
M- : Maximum negative moment due to live load, pedestrian load, or combined total maximumnegative moment.V : Shear corresponding to M-. This is the maximum absolute value for shear
Vmax : Maximum absolute value of shear due to live load, pedestrian load, or combined total absolutemaximum shear.M : Moment corresponding to Vmax.
So LL+I:M is basically Moment corresponding to Vmax.
Thank you Vinay. This makes sense. Can you also direct me to the part of the document that mentions this?
Thanks.
Thanks a lot!