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Steel and Composite Structures Volume 45, Number 6, December25 2022 , pages 865-876 DOI: https://doi.org/10.12989/scs.2022.45.6.865 |
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Research on a novel shear lead damper: Experiment study and design method |
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Chong Rong, Wenkai Tian, Peng Wang and Qingxuan Shi
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| Abstract | ||
| The slit members have lower strength and lower stiffness, which might lead to lower energy dissipation. In order to improve the seismic performance of the slit members, the paper proposes the shear lead damper, which has stable performance and small deformation energy dissipation capacity. Therefore, the shear lead damper can set in the vertical silts of the slit member to transmit the shear force and improve energy dissipation, which is suitable for the slit member. Initially, the symmetrical teeth-shaped lead damper was tested and analyzed. Then the staggered teeth-shaped lead dampers were developed and analyzed, based on the defect analysis and build improvements of the symmetrical specimen. Based on the parameter analysis, the main influence factors of hysteretic performance are the internal teeth, the steel baffles, and the width and length of damper. Finally, the theoretical analysis was presented on the hysteretic curve. And the skeleton curve and hysteresis path were identified. Based on the above theoretical analysis, the design method was proposed, including the damping force, the hysteresis model and the design recommendations. | ||
| Key Words | ||
| shear lead damper; energy dissipation; hysteresis performance; theoretical analysis; design method | ||
| Address | ||
| Chong Rong, Wenkai Tian, Peng Wang and Qingxuan Shi:1)College of Civil Engineering, Xi'an University of Architecture & Technology, Xi'an 710055, China 2)Key Laboratory of Structural Engineering and Seismic Resistance Education, Xi'an University of Architectural & Technology, Xi | ||