Feasibility study of damper application to high-rise buildings | |
| Author | Chivaluck Pongburanakit |
| Call Number | AIT Thesis no. ST-93-18 |
| Subject(s) | Tall buildings Dampness in buildings |
| Note | A thesis submitted in partial fulfillment for the requirement of the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | The main objectives in this study are (1) to investigate the problem of wind-induced vibration on tall buildings, and (2) to evaluate the effectiveness of dynamic dampers in reduction of the vibration. In order to do this, tall building were classified, according to their total heights into six cases:- 100 m., 200 m., 300 m., 400 m., 500 m., 600 m., and the corresponding wind environments were also classified in three different zones:- low wind speed zone, medium wind speed zone, and high wind speed zone. For each case, the responses of a building in along-wind direction, due to oncoming turbulence, and in across-wind direction, due to vortex excitation, were estimated from existing calculation procedures. The typical ranges of the parameters employed in the calculation were identified from actual data of buildings collected from several sources. The calculated responses were, then, compared with the allowable limits for building response. Three types of response allowable limits were considered here: (1) acceleration limit due to occupant's discomfort; (2) deformation limit due to the failure of nonstructural members; (3) extreme fiber strain limit at the base of the building. For different allowable limits, different return periods were used in the estimation of design mean wind speed, i.e., one month to 5 years return period was used for the limit (1), while 30 years to 500 years return period was used for the limit (3). The responses of a structure with a tuned mass damper were also calculated in a similar manner. Finally, the problems of wind-induced response and the effectiveness of a tuned mass damper were evaluated and summarized in a single chart. It was found that (1) in most cases, across-wind response is larger than along-wind response; (2) The across-wind response can be more effectively suppressed by the damper application; (3) In some cases, for example 500 m. building in high wind speed zone, the responses of a structure with the damper application are still higher than the allowable limits, so damper application is not a good solution for vibration control in this case. In the last chapter, a case study of Bai yoke II Tower, which is located in Bangkok city, was made to illustrate the vibration problems and the design of a Tuned Liquid Damper. |
| Year | 1993 |
| 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) | Worsak Kanok-Nukulchai ;Sugiyama, Toshiyuki |
| Scholarship Donor(s) | Thammasat University; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1993 |