Experimental Study on Low-Cycle Fatigue Performance of Weld-Free Buckling-Restrained Braces |
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| Authors: | Luqi Xie Qing Huang |
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| Institution: | 1. The Key Laboratory on Concrete and Prestressed Concrete Structures of Ministry of Education of China, Southeast University, Nanjing, China;2. Architects &3. Engineers Co. Ltd. of Southeast University, Nanjing, China |
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| Abstract: | A type of weld-free buckling-restrained brace is proposed to eliminate the influence of welding on the low-cycle fatigue performance. The core member is manufactured with no weld existing along the overall length of the member. Three welded and three weld-free specimens under different strain amplitudes were tested, and the hysteretic behavior and low-cycle fatigue performance of the specimens were analyzed. The test results indicate that the ductility and the cumulative plastic deformation of the weld-free specimens are much higher than that of the welded ones, which are much closer to the performance of the material capacity. |
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| Keywords: | Weld-Free Buckling-Restrained Brace Low-Cycle Fatigue Performance Cumulative Plastic Deformation Hysteretic Curves |
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