Seismic performance evaluation of steel diagrid system for tall building in high wind and seismic region | |
| Author | Seng Sorpichkapoun |
| Call Number | AIT Thesis no.ST-20-19 |
| Subject(s) | Steel, Structural--Design and construction Earthquake hazard analysis Tall buildings--Earthquake effects |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Structural Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ST-20-19 |
| Abstract | The structural efficiency and architectural esthetic potential of diagrid structures are mostly used in today from mid-rise to high-rise buildings. With a view to the entire constructed Diagrid building, there are very few Diagrid tall building structures built in the region where high wind and seismic at. In this paper, an investigation on the seismic performance evaluation of the steel diagrid system for a tall building in high wind and seismic regions would provide the engineers better insight into this unique type of structural system. The dual system consists of the exterior steel diagrid system, and the interior reinforced concrete core-wall system was checked and designed based on governing forces of the design wind load and seismic DBE level. Then nonlinear static analysis and nonlinear time-history analysis were conducted to investigate the performance of this diagrid structural system under three pairs of real ground motion. The result from the nonlinear response history analysis of the diagrid system suggests that the actual seismic parameter of the response modification factor should be smaller than two for this building. A comparative study was also performed in this paper on the linear analysis and design of the diagrid system comparing to the core-frame system. From the linear analysis results, steel diagrids were found to be performing better in seismic design than the core-frame system in terms of natural period, building weight, and area participation ratio. In contrast, the core-frame system was tested to be better at controlling story displacement and drift. Furthermore, after finishing the nonlinear analysis of the diagrid system to investigate their performance, the application of buckling restrained braces and eccentrically braced brace were applied into the steel diagrid system. Based on the comparison of base shear between the diagrid system with and without BRBs, we can say that after equipped with BRBs, it is not sufficient to reduce the overall performance demand. |
| Year | 2020 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ST-20-19 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| 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;Anwar, Naveed (Co-Chairperson); |
| Examination Committee(s) | Punchet Thammarak;Thanakorn Pheeraphan; |
| Scholarship Donor(s) | Asian Institute of Technology Fellowship; |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2020 |