Nayan67
Civil/Environmental
- Feb 8, 2023
- 30
Hello all,
I wanted to check the tensile stress in the prestressed beam, and the AASHTO 5.9.4.2.2 clearly states that SERVICE III load combination should be used.
Apart from dead load and live loads, this load combination also consists of creep, shrinkage, uniform temperature, and temperature gradient.
Now my question is:
Should we only use dead load, live load (moving load), and prestressing load to estimate the tensile stress or should we also include the effect of creep, shrinkage, uniform temperature, and temperature gradient? In my analysis, I have done a refined construction stage analysis in MIDAS i.e., my material can handle the time-dependent effect.
I got confused because the example that I found in some of the guidelines does not include the force (bending moment) that arises due to secondary creep, secondary shrinkage, uniform temperature, and temperature gradient.
Any sort of help is appreciated.
Thanks in advance.
I wanted to check the tensile stress in the prestressed beam, and the AASHTO 5.9.4.2.2 clearly states that SERVICE III load combination should be used.
Apart from dead load and live loads, this load combination also consists of creep, shrinkage, uniform temperature, and temperature gradient.
Now my question is:
Should we only use dead load, live load (moving load), and prestressing load to estimate the tensile stress or should we also include the effect of creep, shrinkage, uniform temperature, and temperature gradient? In my analysis, I have done a refined construction stage analysis in MIDAS i.e., my material can handle the time-dependent effect.
I got confused because the example that I found in some of the guidelines does not include the force (bending moment) that arises due to secondary creep, secondary shrinkage, uniform temperature, and temperature gradient.
Any sort of help is appreciated.
Thanks in advance.