Rapid indentification of seismic damage in tall buildings by using acceleration response time histories incorporating the effects of soil structure interaction | |
| Author | Patipat Wirotcheewan |
| Call Number | AIT Thesis no.ST-24-15 |
| Subject(s) | Structural Health Monitoring Accelerometers Structural failures Soil structure |
| 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 | In contemporary research, the imperative to identify structural damage resulting from seismic events is paramount. While some existing approaches have proven inadequate for this task, others have demonstrated utility, albeit with certain limitations. One such approach involves the utilization of monitoring systems equipped with accelerometers, which are installed to capture the acceleration responses of buildings in real-time.This study introduces a novel technique rooted in the modal decomposition approach, which leverages the concept of mode of vibration. This approach posits that any complex response of a structure can be expressed as a combination of modal responses. The proposed technique, termed the "Orthogonal Filter" approach, is founded on reduced mode shapes of the structure. The Orthogonal Filter Matrix is employed to process acceleration records obtained from accelerometers during seismic events, thereby yielding modal accelerations directly. These modal accelerations are then utilized to compute other responses such as modal coordinates, which are obtained through the double integration of modal acceleration. These modal coordinates, in turn, facilitate the calculation of forces acting on the structure.Traditional designs have typically avoided the consideration of the complex aspect of soil-structure interaction. However, it is essential to accurately model foundation systems to simulate real structures effectively. Therefore, this study presents a simplified approach to estimate and model foundation systems to represent actual structures. This approach will be validated by comparing numerical model responses with experimental responses.The proposed technique was verified through the conduct of a Non-Linear Response History Analysis (NLRHA) Procedure. Additionally, the results from the model considering soil-structure interaction (SSI) were compared with those from the model without considering SSI, with both models analyzed using the NLRHA approach. These comparisons elucidated the differences in responses influenced by soil-structure interaction. |
| Year | 2024 |
| 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;Punchet Thammarak; |
| Scholarship Donor(s) | Royal Thai Government Fellowship; |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2024 |