The effects of aerodynamic interference on dynamic wind pressure and dynamic response of tall buildings | |
| Author | Anurak Pitirattanaworranat |
| Call Number | AIT Thesis no.ST-17-30 |
| Subject(s) | Tall buildings--Aerodynamics Buildings--Wind stresses |
| 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-17-30 |
| Abstract | The wake characteristic and aerodynamic excitation to a standard tall building by an interfering building were investigated by using TU-AIT wind tunnel model tests. The standard tall building is Commonwealth Advisory Aeronautical Research Council (CAARC) was used as a principle and interfering building in this experiment with a sub-urban simulated approaching wind condition. A hot-wire anemometer was used to measure the fluctuating wind velocity in the wake region from the upstream interfering building which can be calculated to receive the turbulence intensity, ??, of the wake. The High Frequency Pressure Integration (HFPI) technique was adopted for identifying the local surface pressure all-over the surfaces at various height for an isolated case and interfering case, and overall base force of the principle building. Moreover, for the investigation of critical region on response, the HFPI was used to tests at height of 0.70H and 0.85H of both the principle and interfering buildings were simultaneously measured by pressure sensor within the same conditions. For the presentation grid system, the power spectral density (PSD) analysis of the local surface pressure on the windward side of the principle building mainly influenced by the approaching wind with almost similar energy distribution of PSD, particularly at high-range reduced frequency. Meanwhile, the other side was affected by the wake boundary from the interfering building at Strouhal frequency. Furthermore, the critical region on response which are along, across and torsional direction were observed independently to each other on far-end diagonal downstream, side-by-side arrangement and tandem arrangement from the interfering building, respectively. The increase was mainly found in the dynamic response that compose of background and resonant response while the mean response changed insignificantly. |
| Year | 2017 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ST-17-30 |
| 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) | Punchet Thammarak;Anwar, Naveed; |
| Scholarship Donor(s) | Royal Thai Government Fellowship; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2017 |