avatar  


Recently viewed tickets

Log out

How to calculate FEMA hinge parameters?

Question:

Hi,

Do you have more information on how FEMA hinge values on Civil? manual for example? below you can see about 3.99 rad of DY rotation, it looks a lot, how is it calculated? and how to calculate point C?



thanks

regards




Answer:

Hi,

I think you are asking how CP is calculated for the FEMA-type hinge. 
FEMA specifies 0.02 of PLASTIC ROTATION for CP as shown below.



In Civil, the hinge rotation is described as D/DY ( = total rotation / Yield Rotation). 
Total rotation = Yield rotation + plastic rotation.
Yield Rotation = 3.994e-5
Plastic Rotation for CP = 0.02
Therefore, CP = (3.994e-5 + 0.02)/3.994e-5 = 501.7


We can see the exact value of DY by selecting "User Input".
Also, we can give user-defined values by selecting the "User-input"






Regards,
MIDAS TECH SUPPORT


Creation date: 5/20/2021 3:55 PM (suman)      Updated: 5/21/2021 8:58 AM (dklee@midasit.com)
Files   
DataImage18.png
287.2 KB
DataImage18[1].png
193.1 KB
DataImage29.png
197.4 KB
DataImage35.png
202.5 KB
DataImage4.png
210.2 KB
DataImage57.png
84.1 KB
DataImage6.png
27.7 KB
DataImage67.png
159.7 KB
DataImage81.png
159.1 KB
DataImage87.png
198.1 KB
Pushover civil test 01.mcb
179.3 KB