Temperature forces on concrete structure
Temperature forces on concrete structure
(OP)
I am using STAAD pro 2004 to analise and design a 2 storey R/C house. I have a question regarding the loads/forces in the system. Made all the loading case : self, live, wind, earthquake, temperature, etc. It seems like un-usuall to me to have design results with the temperature loading component (dead+live + temperature), as a critical case?! Normally I would have expected to have D+L+W, or D+L+E, as critical cases on all concrete columns. Is it possible to have temperature loading, bringing such internal stresses as to be critical? I filled the temperature loading pattern as regular, with the difference between element faces 20 degree celsius. Did anyone had a similar condition or design issues? I desinged this structure in Metric units.
Thanks
Kol
Thanks
Kol





RE: Temperature forces on concrete structure
RE: Temperature forces on concrete structure
corus
RE: Temperature forces on concrete structure
RE: Temperature forces on concrete structure
For example, in the australian code we have a case can have cases of say +22 or -20 degrees for exterior elements. But in interior buildings, there is only the need for crack control reinforcement, which is usually secondary to primary load cases. Our Bridge Code specifies a load combination of Perminate Effects + Thermal (for those whos code doesnt specify a temperature case). But since most buildings do not have concrete facade. There is little area of conrete which is acutally exposed to the exterior of the building.
So if you are applying a blanket + or -20 temperature gradient on all elements this will not reflect the actual temperature effects occouring on the building.
I know in bridges Temperature effects (Creep and Shrinkage) are very large and are a major design consideration. But I would assume that on a building like yours it shouldnt be as critical.
RE: Temperature forces on concrete structure
Hej Philip, how Austalia is copping with this wilde fires? Might have been a hot sommer there!?
RE: Temperature forces on concrete structure
RE: Temperature forces on concrete structure
The last sentence: Do you mean, providing some concrete beams from column to column? In fact this I didn't like to have.
RE: Temperature forces on concrete structure