Earthquake-Damage Evaluation and Restrengthening of Reinforced Concrete Residential Corner Buildings
| Autor: | Ching San Chiang, 蔣敬三 |
|---|---|
| Rok vydání: | 2000 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 88 Many corner buildings were heavily damaged in the 9/21 earthquake that struck Taiwan last year, however, this type of buildings are still very common in Taiwan. In order to avoid the damage in the following earthquakes, it is necessary to investigate the performance of corner buildings under seismic action. Firstly, this research surveyed 173 corner buildings in Puli. Secondly, this research investigated the seismic behavior of 38 corner buildings out of 173 corner buildings by means of “Aseismic Evaluation of Reinforced Concrete Buildings” proposed by Architecture & Building Research Institute in Taiwan. Lastly, some results were obtained by means of analyzing the damaged buildings, seismic vulnerable assessment, and discussion on structural strengthening. Based upon the results prementioned, this research proposed the methodology for seismic restrenthening of the existing buildings and advice for new-build in the designing stage. The main results obtained in this research show that: 1. The wall/floor ratio of the weakest story should be larger than 0.45%. The unit vertical element load and the unit vertical column load should not exceed 4.0kg/cm2 and 12.0kg/cm2 respectively. 2. Take a 3-storey for example, the aseimic ability of a building will meet the demand in aseismic capacity of the building code in Taiwan as soon as the section of a column in the corridor is larger than 45cm 45cm. 3. The two-side restrained corner buildings show best behavior under seismic loading followed by one-side restrained corner building, the single corner buildings show poorest behavior under seismic load. 4. The corner buildings equipped with one/two corner column(s) show best seismic behavior under seismic loading followed by the traditional corner buildings. The corner buildings lacking corner columns show worst seismic behavior in the earthquake events. 5. The buildings with one-direction brick wall show worst seismic behavior followed by frame structure, structures with two-direction 1/2B or 1B brick wall. The buildings with two-direction RC walls show best seismic behavior under seismic loading. 6. Two buildings will pond in a earthquake if no/inadequate separate space is arranged. 7. The size of the column, reinforcement ratio, and space of the stirrup can directly effect the seismic behavior of the corner buildings. The strength of the concrete will not be dominant in the low-rise RC buildings. 8. Arranging the RC walls appropriately can help to improve the seismic behavior of the corner buildings. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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