000229220 001__ 229220
000229220 005__ 20180317094315.0
000229220 0247_ $$2doi$$a10.1061/(ASCE)ST.1943-541X.0001319
000229220 022__ $$a0733-9445
000229220 037__ $$aARTICLE
000229220 245__ $$aDevelopment and Testing of Naturally Buckling Steel Braces
000229220 260__ $$bAmerican Society of Civil Engineers$$c2016
000229220 269__ $$a2016
000229220 336__ $$aJournal Articles
000229220 520__ $$aSteel concentrically braced frames inherently provide great strength and stiffness, and are widely used for seismic resisting systems in buildings. These include conventional buckling braced frames and buckling restrained braced frames. Although the latter can prevent brace buckling and provide ductile behavior, both types of braces provide no hysteretic damping at small drift levels and offer very limited post-yielding stiffness. This study proposes a new type of steel brace with a novel mechanism—the naturally buckling brace (NBB). The design combines high-strength and low-yield steels arranged in parallel with a specified initial eccentricity along the brace length, providing ductile seismic behavior. Six tests of various NBB models subjected to cyclic loading were conducted to examine the seismic performance of the proposed NBB. Two specimens out of the six achieved the characteristics intended for NBB. The test results showed that the NBB specimens with appropriate design parameters could achieve early yielding, or hysteretic damping, from around 0.11% story drift and prevent local buckling as well as deformation concentration up to a very large story drift (greater than 3%). A single NBB would provide an asymmetric hysteretic behavior, a large post-yielding stiffness in tension, and a ductile performance with stable energy dissipation. Further systematic studies of NBBs are needed to comprehensively evaluate the capacities and limitations of the NBBs, including the reliability of performance with repeated tests.
000229220 700__ $$aHsiao, Po-Chien
000229220 700__ $$aHayashi, Kazuhiro
000229220 700__ $$0250320$$aInamasu, Hiroyuki$$g273639
000229220 700__ $$aLuo, Yun-Biao
000229220 700__ $$aNakashima, Masayoshi
000229220 773__ $$j142$$k1$$q04015077$$tJournal of Structural Engineering -New York-
000229220 8564_ $$uhttp://ascelibrary.org/doi/abs/10.1061/(ASCE)ST.1943-541X.0001319$$zURL
000229220 909CO $$ooai:infoscience.tind.io:229220$$pENAC$$particle
000229220 909C0 $$0252430$$pIIC$$xU10229
000229220 917Z8 $$x273639
000229220 917Z8 $$x148230
000229220 937__ $$aEPFL-ARTICLE-229220
000229220 973__ $$aOTHER$$rREVIEWED$$sPUBLISHED
000229220 980__ $$aARTICLE