A comparison between HFFB and HFPI techniques for determining wind-induced response of tall buildings | |
| Author | Cheepchanok Srinamgneon |
| Call Number | AIT Thesis no.ST-13-09 |
| Subject(s) | Wind tunnels--Testing Tall buildings |
| 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-13-09 |
| Abstract | In this study a synchronous surface pressure measurement for determining the wind-induced force on tall buildings was carried out on both simple and complex shape building models in the TU-AIT wind tunnel. This measurement technique is called ‘high frequency pressure integration (HFPI)’. To verify the result of HFPI technique, a common and reliable method—the high frequency force balance (HFFB) technique—was also conducted. This HFFB method has some limitations in predicting the wind-induced response of buildings with non-linear mode shape. To handle the limitations, an approximation using mode shape correction factors was commonly used, and this approximation was examined by the HFPI’s result in this study. For both simple and complex shape building models, the results obtained from HFFB and HFPI methods are in good agreement and are compared reasonably well with the result of the other study. This confirms that the HFPI method was conducted correctly. Moreover, the mode shape correction factors of HFFB method are found to be successful for approximating the modal force of buildings with non-linear mode shape. The comparison further shows that, in the simple building (the standard CAARC building), the effects of higher vibration modes on wind-induced responses are not significant. In addition, the effects of lateral-torsional coupled motions, which are common in buildings with unsymmetrical stiffness system, are found to be significant in both displacement and acceleration responses. |
| Year | 2013 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ST-13-09 |
| 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; |
| Examination Committee(s) | Thanakorn PheeraphanPunchet Thammarak; |
| Scholarship Donor(s) | Royal Thai Government-AIT Fellowship; |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2013 |