creation of lateral load for pushover analysis

[khalil Ahmad]

Hi,

I want to create new load pattern for lateral pushover load in "BuildingTcl release 1.4", but I could not find the definition of the lateral load pattern. There are just 2 options: "linear" , "constant".
In opensees inside of the exmaples I found the lateral load for pushover analysis and I wrote them here.


# Reference lateral load for pushover analysis
set HloadLevel1 [expr $Weight/(3*2+3)];
set HloadLevel2 [expr 2*$Weight/(3*2+3)]; # refrence(2D frame -- pushover analysys -- nonlinear bc -- P-delta)

# create load pattern for lateral pushover load
set Hload [expr $Weight/2]; #Refrence(Ex4.Portal2D.analyze.Static.Push.tcl)


Can you tell me how can I create the same lateral load for puhover analysis in "BuilidngTcl"

Thanks
Sarwari

[silvia]

first of all, you should use the latest BuildingTcl, i have fixed a few bugs along the way.

for the load pattern, right now only the linear load pattern is available, however, this is for a linear mode shape. The lateral-load distribution is proportional to the floor weight times height divided by the total sum of weight*height.

[khalil Ahmad]

Hi Silvia,

Thanks from your reply.
Can you write me the loacation of the file which includes lateral load disturbution in BuildingTcl 1.5.
Sincerely
Sarwari

[silvia]

analyzeloadcombination.tcl

[khalil Ahmad]

Hi Silvia,

I am analysing a RC frame with BuildingTcl.v. 1.5. I used linear load distribution(triangular) in Pushover analysis. The ratio of the shear strenght to the weight of the RC frame is 0.30. How can I divide the lateral forces into this ratio. Also I would like to know the ratio of shear strenght/weight in RC test 2D frame in BuildingTcl.v.1.5.

Thanks
Sarwari

[silvia]

i'm not ver clear on the first one.
you might have to do some post-processing yourself, you can use the processed files to make it easier.