Evaluation of mega column, tubular system and core wall system for tall buildings in low to moderate seismic region | |
| Author | San Thaw Tar Myint |
| Call Number | AIT Thesis no.ST-20-24 |
| Subject(s) | Structural frames Columns, Concrete--Design and construction Tall buildings--Design and construction |
| 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-20-24 |
| Abstract | In this study, forty-seven stories building 188m height which is in Philippines, a high seismic hazard region is selected and the original building plan was modified into seventy-five stories building 300m height which is assumed to be located in Bangkok, moderate wind and low to moderate seismic region. This building is modified into Core Wall Frame System and 8 Mega Columns System to evaluate mega columns system, tubular system and core wall system. Wind and Seismic design will be used to determine the responses of the structure. Wind Analysis and Response Spectrum Analysis (RSA) at DBE level evaluation will be analyzed in ETABS and the performance evaluation is accomplished by nonlinear time history analysis in Perform 3D. The performances of the buildings are determined based on the story drift, story shear, story displacement, etc. From the comparison of linear analysis, core wall frame system has high demand forces compared to 8 mega columns system and it consumed concrete volumes a lot than mega columns system. But in floor area consumption, mega columns system takes 0.2% more than core wall frame system because it has transfer girder and inclined truss that is vertical components structural area which consumed usable floor area. To sum up, 8 mega columns system can be used in normal tall building and it is more economical. Based on the results obtained from nonlinear time history analysis, 8 mega columns system have enough flexural capacity and shear capacity to resist ground motion excitations. The transient story drifts and residual drifts are within acceptable limit. These two structural systems are the most widely used structural systems worldwide. Based on this study, the suitability of the structural system to be use will depend on the choice of the designer and the circumstance of the situations. |
| Year | 2020 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ST-20-24 |
| 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 |