A Plan and Design for Full-Scale Tests of Seismic Wall with i-POD Inside
| Autor: | Wang, Po-Sheng, 王柏盛 |
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| Rok vydání: | 2019 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 107 Metallic yielding dampers (MYDs) designed to deform in an in-plane flexural mode achieves aseismatic goal, and also enhances effective utilization of material. After improving the shortcomings of other in-plane flexural dampers, the new type of MYD referred to as the in-plane oval damper (i-POD) has been proposed. Component tests prove the i-POD possessed stable and reliable energy dissipative characteristics, and also generalize empirical design formula through a comprehensive parametric study.This study continues the discussion of a way to integrate the in-plane oval damper with the structure to promote the practical application. Proposed in this thesis is to connect the full scale i-PODs to A-frame paired up and down between adjacent floors in form of a module referred to as seismic wall with i-POD inside. The story drift caused by the reciprocating motion is transformed into the amplitude of the displacement damper to form alternating tension and compression deformation, and the anti-seismic mechanism is formed by the hysteresis loop area of the elastic-plastic behavior. In this thesis, a single-layer portal steel frame structure is used as the framework to evaluate the aseismatic performance of the i-POD seismic wall, and a series of numerical simulations are designed and planned. The detailed design of the full-scale i-POD component is based on the aforementioned empirical formula combined with ANSYS analysis. The numerical simulation results of reciprocating pushover analysis show the mechanical properties of i-POD is similar to that the result of i-POD independent component analysis. As stated above, it proves that the damper and structure are connected through the i-POD seismic wall, which can fully reflect the behavior of the damper. The numerical simulation results of seismic analysis show that after adding the damper, the peak shear of column, and also the peak acceleration and displacement response top of the single-layer portal steel frame structure are significantly reduced, and the control efficiency increases with the intensity of the input excitation as larger responses increase the amplitude of the damper and dissipate more energy as a result. The i-POD component design method is verified reliably by comparison of the results of three types of i-PODs. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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