چکیده مقاله
The present study was experimentally undertaken to evaluate the behavior ofHollow Structural Section HSS and Concrete−Filled Tube CFT braceswidely employed in Special Concentrically Braced Frames SCBFs It isessential that HSS and CFT braces have been considered in the system−level ofmulti−story SCBFs to evaluate their seismic performance However, limitedstudies have been carried out to investigate the structural response of HSS andCFT braces in the system−level of multi−story SCBFs The current study wasexperimentally undertaken to evaluate the seismic performance and the globaland local hysteresis responses of HSS and CFT braces with variouscross−section shapes in the system−level of multi−story SCBFs Fourfull−scale one−bay, two−story SCBFs with four various cross−sections,namely square−HSS, circular−HSS, square−CFT, and circular−CFT, forbraces and columns were considered and subjected to cyclic lateral loading Assessing braces with various cross−sections indicated that CFT braces showedan increase in compression strength, post−buckling strength, and compressionaxial deformation approximately by 83%, 152%, and 127%, respectively, incomparison with HSS braces Moreover, it was observed that local bucklinginitiation, crack initiation and fracture occurred in CFT braces at respectively2 22, 2 35 and 2 32 times of roof drifts of those exhibited by HSS braces
کلیدواژهها
نویسندگان
Samira Ebrahimi
School of Civil Engineering, College of Engineering, University of Tehran, Tehran, Iran
Seyed Rasoul Mirghaderi
School of Civil Engineering, College of Engineering, University of Tehran, Tehran, Iran
Seyed Mehdi Zahrai
School of Civil Engineering, College of Engineering, University of Tehran, Tehran, Iran
شیوه ارجاع
Ebrahimi, Samira and Mirghaderi, Seyed Rasoul and Zahrai, Seyed Mehdi,1402,Experimental Evaluation of Hollow Structural Section andConcrete-Filled Tube Braces,13th International Congress on Civil Engineering,Tehran
ارائهشده در
مجموعه مقالات سیزدهمین کنگره بین المللی مهندسی عمران25 مهر 1402 · تهران