Bridge Substructure Component Inelastic resistance
Posted 27 January 2012 - 05:26 PM
Posted 27 January 2012 - 06:21 PM
But I am not sure about reinforced concrete members. As an example, for tension controlled section, rebars on the tension side of neutral axis should reach yield stress first. I understand rebar may harden and then offer a strength significantly higher their yield strength. I just had trouble locating relevant codes in AASHTO to calculate out this Inelastic Flexural strength.
Posted 27 January 2012 - 06:42 PM
For a substructure, I believe you force the hinge at the midpoint of the column bent heights and determine your moments and shears from there. I will double check when I get a chance with chapter 5 and 6.
Posted 01 February 2012 - 04:54 AM
Be sure to use the overstrength factor to determine Mpr. The overstrength factor can be found in section 18.104.22.168.3b as 1.3 for concrete and 1.25 for steel. Mpr = Overstrength factor x Mn.
Posted 11 April 2012 - 11:01 PM
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