Identification of optimal seismic resistant confidurations of viscous dampers in multi-story buildings by numerical optimization | |
| Author | Shin Thant Aye |
| Call Number | AIT Thesis no.ST-25-06 |
| Subject(s) | Buildings--Design and construction Earthquake resistant design Structural control (Engineering) |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Structural Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | This study presents a numerical optimization framework for identifying the optimal configuration of viscous dampers in multi-story buildings to enhance seismic performance. The research focuses on determining both the optimal locations and damping coefficients of viscous dampers using gradient-based optimization algorithms. Initially, a simplified 2D shear frame model is analyzed using a step-by-step optimization approach to run the optimization multiple times and evaluate the effectiveness of different damper placements. The optimal configuration is identified based on minimizing the total damper cost while satisfying the maximum interstory drift constraints under multiple ground motion records.To improve computational efficiency and extend applicability, the optimization framework is further developed using a binary variable method with penalty functions, which does not need to run optimization many times for all possible configurations. This method is applied to a 3D symmetric frame and validated against the 2D results, confirming its accuracy and reduced computational demand. The analysis is then extended to more realistic structural models with torsional irregularities. The results reveal that damper placement is strongly influenced by structural characteristics: torsional irregularity leads to asymmetric damper distributions across the asymmetric axis. Therefore, this study highlights the importance of optimum damper placement to a specific type of structure and the findings offer valuable insights for improved seismic resistance of multistory buildings using viscous dampers. |
| Year | 2025 |
| Type | Thesis |
| School | School of Engineering and Technology |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Pennung Warnitchai |
| Examination Committee(s) | Thanakorn Pheeraphan;Krishna, Chaitanya;Punchet Thammarak |
| Scholarship Donor(s) | Loom Nam Khong Pijai (Greater Mekong Subregion) Scholarships |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2025 |