Design, Analysis and Application of a Mandrel-Beam-Frictional Sliding Damper

• Published in: KSCE journal of civil engineering 2022, 26(6), , pp.2747-2764
• Main Authors: Hu, Baolin, Li, Bin, Wang, Changhong, Keleta, Yonas
• Format: Article
• Language: English
• Subjects: Algorithms; Analysis; Civil Engineering; Damping; Design; Design analysis; Design parameters; Earthquake dampers; Earthquakes; Energy dissipation; Energy exchange; Engineering; Frame structures; Geotechnical Engineering & Applied Earth Sciences; Industrial Pollution Prevention; Kinematics; Parameters; Reinforced concrete; Reinforcing steels; Seismic activity; Seismic energy; Seismic response; Sliding; Slumping; Steel beams; Structural Engineering; Transient analysis; 토목공학
• ISSN: 1226-7988; 1976-3808
• DOI: 10.1007/s12205-022-0674-4

Precise seismic controlling of the frictional sliding damper is hard under different earthquake intensities. Therefore, a new concept of the mandrel-beam-frictional sliding damper is proposed. It consists of a frictional sliding damper and several metallic yielding beams. Although they differ in the kinematics to consume seismic energy, they could contribute to hybrid energy dissipation through an intermediate mandrel. The sliding force and the yielding load will control the maximal resistance of a frictional damper combining a metallic damper systematically. This study mainly focuses on the design, analysis and application of the integrated damping devices. Hysteretic curves, stiffness equations and numerical algorithms are presented in detail. Three design parameters of the metallic damper, including the quantity, length and thickness of the steel beams, as well as the coefficient of the frictional damper are discussed. Mandrel-beam-frictional sliding damper is applied to a reinforced concrete frame structure, and the seismic performance is evaluated by transient analysis. Optimal design parameters are derived from the energy dissipation ratio. Results indicate that mandrel-beam-frictional sliding damper can dissipate seismic energy efficiently, which will minimize the dynamic responses of the main structure. Low-cost, manufacturing easy and high earthquake energy dissipation will support it to be a new type of hybrid damping device.