Analysis of natural frequencies and mode shapes of reinforced concrete medium-rise slab-column frame buildings | |
| Author | Attapol Kobkaiyakit |
| Call Number | AIT Thesis no.ST-03-24 |
| Subject(s) | Finite element method Slabs Reinforced concrete |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ST-03-24 |
| Abstract | Analytical method used to predict the dynamic properties of two medium-rise reinforced concrete slab-column frame buildings is developed in this study. In analytical method, three-dimensional finite element models of these buildings are built to assess their dynamic properties such as natural frequencies and mode shapes. The dynamic properties obtained from finite element models have been analyzed and compared with those obtained from ambient vibration measurements. Several important factors the significantly affect the dynamic properties of building are considered in finite element modeling such as the stiffuess of pile foundations in Bangkok's soil, and the mechanical properties of masonry infill walls. These models can be categorized into two cases: (1) the fixed base model, and (2) the flexible base mode. For first building without basement, the analytical results indicate that the flexible base model, taking into account the flexible foundation, gives excellent agreement with the measured results in translational mode, but the fixed base model gives the better prediction of torsional mode. For second building with basement, the effects of embedment and soil-structure interaction need to be considered in modeling to obtain a good correlation between measured results and analytical results. In summary, soil-structure interaction effects and the contributions of masonry walls should be considered in modeling to predict dynamic properties of medium-rise reinforced concrete slab-column frame buildings in Bangkok. |
| Year | 2003 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ST-03-24 |
| 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) | Kim, Kidu;Barry, William J.; |
| Scholarship Donor(s) | Royal Thai Government; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2003 |