Seismic overstrength of multi-story reinforced concrete frame buildings in low seismic zones | |
| Author | Piya Tangsaereemankong |
| Call Number | AIT Thesis no. ST-98-19 |
| Subject(s) | Reinforced concrete construction Earthquake resistant design Structural dynamics |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | The overstrength of the regular reinforced concrete moment-resisting frame structures designed fully in accordance with the 1994 edition of the Uniform Building Code was determined through nonlinear static push-over analysis. These buildings are of three, five, seven, and nine stories, and are situated in seismic zones 1, 2A, and 2B. The results from each case indicate that these structures, although they meet all the design instructions required by the code, exhibit the partial mechanism during the application of the lateral load. In other words, the special ductile detailing provisions prescribed in moderate seismic zones cannot guarantee that the structures will form appropriate mechanisms under the design earthquake. Hence, a design modification technique was introduced to prevent the formation of this undesired failure mechanism. The overstrength variation of the structures designed under this modification was then computed. It was shown that higher overstrength results, if the structures are located in lower seismic zones, have fewer stories, or contain a larger amount of gravity loads. The overstrength capacity in some cases is as high as five. The safety of these buildings was also evaluated by comparing the overstrength capacity with the demand implied by the design earthquake motion. The results proved that the structures, with the design modification, contain sufficient overstrength to survive the design earthquake. |
| Year | 1998 |
| Type | Thesis |
| School | School of Civil Engineering |
| 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;Gupta, Satyendra P. |
| Scholarship Donor(s) | Asian Institute of Technology Partial Scholarship; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1998 |