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The Influence of the U-Shaped Damper Configuration on the Seismic Performance of Steel Building Frames
The effects of the configuration of the U-shaped damper system on the seismic performance of steel frames are investigated in this paper. Two different configurations are considered for this purpose. First one is the common classical application of U-shaped devices with the aid of chevron bracing systems, where the bracing systems have the supporting role, and the second is the particular type of bending dissipative braces (BDBs) including U elements, which has been recently proposed and tested by the authors. For this purpose, steel moment resisting frames with the mentioned damper systems are designed by using the available design techniques. Then, the detailed structural models are developed in the OpenSees platform to perform nonlinear time history analyses. The behaviour of the building frames under different ground motion records is evaluated and the corresponding results compared each other. Both far-filed and near-fault earthquake records are selected for the nonlinear time history analyses in order to capture the effects of the record types on the structural response. At the end, the economic efficiency of the different configurations is discussed. The final results have shown that the use of BDB increases the structural rigidity more than in case of the classical configuration of chevron braces with U elements. It can be also observed that the installation of BDB is cheaper than the classical one.
The Influence of the U-Shaped Damper Configuration on the Seismic Performance of Steel Building Frames
The effects of the configuration of the U-shaped damper system on the seismic performance of steel frames are investigated in this paper. Two different configurations are considered for this purpose. First one is the common classical application of U-shaped devices with the aid of chevron bracing systems, where the bracing systems have the supporting role, and the second is the particular type of bending dissipative braces (BDBs) including U elements, which has been recently proposed and tested by the authors. For this purpose, steel moment resisting frames with the mentioned damper systems are designed by using the available design techniques. Then, the detailed structural models are developed in the OpenSees platform to perform nonlinear time history analyses. The behaviour of the building frames under different ground motion records is evaluated and the corresponding results compared each other. Both far-filed and near-fault earthquake records are selected for the nonlinear time history analyses in order to capture the effects of the record types on the structural response. At the end, the economic efficiency of the different configurations is discussed. The final results have shown that the use of BDB increases the structural rigidity more than in case of the classical configuration of chevron braces with U elements. It can be also observed that the installation of BDB is cheaper than the classical one.
The Influence of the U-Shaped Damper Configuration on the Seismic Performance of Steel Building Frames
Lecture Notes in Civil Engineering
Mazzolani, Federico M. (editor) / Dubina, Dan (editor) / Stratan, Aurel (editor) / Mazzolani, Federico M. (author) / Taiyari, Farshad (author)
International Conference on the Behaviour of Steel Structures in Seismic Areas ; 2022 ; Timisoara, Romania
2022-05-08
9 pages
Article/Chapter (Book)
Electronic Resource
English
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