How do I turn on/off the display of the strands in model view?Ĥ. I created the beams using the prestressed composite bridge wizard, where I inputted the strand pattern and debonding data, but I can't seem to be able to get to that information once the model has been created.is there a way to view or modify the strand patteren/debonding outside of the wizard?ģ. box beside Total tendon area and the window comes up with Strand diameter and number of strands, should these be entered for one strand (say 0.5' diameter, and 1) or should this be the strand diameter and the number of strands (say 0.5' diameter, and 88)?Ģ. In the tendon properties window, when i click on the. Lets say i have a prestressed bulb-tee beam bridge with 88 total strands (all straight) with several strands that have various lengths of debonding.ġ. We can alter this from Main Control data.I have a few questions about the prestressing tendons.

See below snapshot which explains the default direction. Also for Tapered Sections when checking the results we need to be careful regarding its local axis direction. Stress results: - If Construction Stage Analysis is involved in the model, if we want to apply these factors in CS analysis, then we need to activate the Section Stiffness Scale Factors in the respective construction stages using relevant 'boundary groups' option. However, the option for applying the Section Stiffness Scale Factors to Stress Calculations may be selected in Analysis > Main Control Data. For stress calculations, original section properties are used. Deformations The scale factors defined here are applied to the calculations for displacements and member forces.

Now Let's compare various results of both the models. As we do not have construction stages here and the Boundary group is ' default', thereby these Stiffness scale factors will be applied for the entire analysis.

Reduced Section Stiffness data can be applied by following the below procedure.

Actual Section Stiffness are shown in below snapshot. Here we will reduce the Iyy flexural stiffness by 50%. For example, Let's consider a Simply Supported Beam of 20m length and rectangle (0.5mx0.5m) cross-section and apply 10kN/m UDL load and check the results with and without Section Stiffness Scale Factors. Useful in cases to perform Cracked Sectional Analysis, Rehabilitation, Stiffness deterioration etc. Section Stiffness Scale Factors Properties > Section Manager > Stiffness Stiffness scale factors can be applied to a particular section to manipulate(increase/decrease) the sectional stiffness data considered for the analysis.

Stress checking in midas civil