2018 Fiscal Year Annual Research Report
Application of damped-outrigger system incorporating buckling-restrained brace in tall buildings
| Project/Area Number |
18J15047
|
|---|
| Research Institution | Tokyo Institute of Technology |
|---|
Principal Investigator |
LIN PAOーCHUN 東京工業大学, 環境・社会理工学院, 特別研究員(DC2)
|
|---|
| Project Period (FY) |
2018-04-25 – 2020-03-31
|
| Keywords | outrigger / BRB / parametric design / optimal design / spectral analysis |
|---|
| Outline of Annual Research Achievements |
This study investigates the seismic behavior of a damped-outrigger system incorporating buckling-restrained brace. The methods to evaluate inelastic seismic response of structures with multiple damped-outriggers based on a spectral analysis (SA) procedure are proposed. For structure with BRB-outriggers, the optimal outrigger elevations and relationships between the axial stiffness of the BRB, axial stiffness of perimeter column, and the flexural rigidity of the core structure in order to minimize the seismic response are the primary research objectives of this study. Analytical models with building heights of 64m, 128m, 256m, and 384m are used to perform the SA and the nonlinear response history analysis. This study concludes with a design recommendation for preliminary design purposes.
|
| Current Status of Research Progress |
Current Status of Research Progress
1: Research has progressed more than it was originally planned.
Reason
The research works went well during the past year. Most of the research topics have been completed. One journal paper was completed and published in the International Journal of Earthquake Engineering and Structural Dynamics in 2018. In addition, two additional journal papers have been submitted and now under review. The research results were also presented in one international conference and one domestic conference.
|
| Strategy for Future Research Activity |
The research topic “damped-outrigger system incorporating buckling-restrained brace” is still a new idea in building seismic design. The research results were well distributed to the academic and industry areas through the published journal papers and the conferences. This research will continue, and to focus on practical engineering purpose. Thus, the research can be used in real design projects could be possible. It is hope that the journal papers that are under review could be accepted, so that the knowledge can be speed to the society. In addition, the current researches have been conducted based on numerical analysis. It is hoped that the proposed theatrical results can be verified through real experimental programs in the future.
|
