| Author | Kawin Worakanchana |
| Call Number | AIT Thesis no.ST-02-3 |
| Subject(s) | Reinforced concrete
|
| Note | A thesis proposal submitted in partial fulfillment of requirements for the degree of
Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | than Thai people have ever expected. This increases the level of awareness
about the possibility of seismic hazards. Because most existing buildings and
structures in Thailand are not designed to resist earthquakes, it is believed that these
buildings and structures might be damaged and lead to large economic loss if they
were struck by earthquakes. One possible way to mitigate the loss from a seismic
action is to carry out a comprehensive study on seismic capacity or seismic
performance of many different buildings and structures in Thailand. However, this
requires accurate knowledge of how members or substructures perform under cyclic
loading. The quasi-static cyclic loading tests were carried out on columns, which are
considered to be one of the most critical members against a seismic action because its
fai lure can lead to column sidesway or soft story failure mechanism. Six test
specimens were separated into two groups. The specimens in the first group were
selected to represent the existing mid-rise buildings, including lap splice at just above
the floor, which is usually found in the construction practice in Thailand. The
specimens in the second group were modified to improve their seismic behavior by
employing Capacity Design Concept and changing the presence of lap splice. The test
result shows that the columns in mid-rise buildings in Thailand showed brittle failure
mode including brittle shear failure, tensile splitting and bond deterioration. Poor
seismic performance can be observed through the experimental force-displacement
relationship. The strength of all columns dropped more than 20% of peak resistance at
2% drift and dropped to 30-40% at 5% drift. The peak strength was found at 1.1 -
1.4% drift. The specimen with the modification showed a higher strength and drift
level but not the ductility. In addition, the analytical methods based on simple flexural
and shear behavior could give the rough idea to predict the failure mechanism and
strength of the specimens within the range of 75-107%. |
| Year | 2002 |
| 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) | Pichai Nimityongskul;Barry, William J.; |
| Scholarship Donor(s) | Japan 1999-2000; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2002 |