A tasnimi - department of civil eng TMU.tehran iran
f dehghan - department of civil eng TMU.tehran iran

one of effective methods to upgrade the seismic resistance capacity of existing reinforced concrete buildings is strengthening with bracing members . However when the braces are subjected to large compressive forces they exhibit buckling deformationand shoe unsymmetrical hysteretic behavior in tension and compression and typically exhibit substantial strength deterioration when loaded monotonically or cyclically.

bucking restrained brace , strengthening , seismic performance , static pushover analysis