| 姓名 | 曾瀚逸(Han-Yi Tseng) | 電子郵件信箱 | E-mail 資料不公開 | |
| 畢業系所 | 營建工程系碩士班(Department and Graduate Institute of Constrction Engineering) | |||
| 畢業學位 | 碩士(Master) | 畢業時期 | 90學年第2學期 | |
| 論文名稱(中) | 建築結構在垂直地震作用下之動力反應特性 | |||
| 論文名稱(英) | Dynamic Responses of Building type Structures under the action of Vertical Earthquake | |||
| 檔案 |
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論文使用權限 | 校內外完全公開 | |
| 論文語文/頁數 | 中文/101 | |||
| 摘要(中) | 一般而言，結構物受垂直向地震作用時之動力反應較水平向反應小。因此，除了較重要之結構體外，垂直向地震作用之影響可合理的忽略。然而，在921地震與北嶺地震、阪神地震中，垂直地震的能量卻相當顯著，導致近年來國內外之設計規範紛紛將垂直向地震之影響列入考慮，而使得結構耐震設計之結果較以往更加保守。依照以往建築設計慣例，對於建築物設計上均只重視水平地震而忽略垂直地震之影響，這種設計對於深源地震以及離震央較遠區域的建築結構物來說是合理的，但是對於接近震央之區域中，建築物若有明顯的垂直向地震反應，此種慣例將會有所顧忌。 本研究中主要探討垂直向地震力對於房屋結構物之影響。所要探討的包括有921地震與高頻人造地震下，結構物各層之加速度反應放大值，垂直向地震對彎矩之影響，考慮土壤互制對於結構有何影響。本研究中首先先評估SAP2000軟體之適用性。其次，對於平面構架在考慮固定端與土壤互制時，分析結構自然頻率之改變以及其對加速度反應與彎矩力之影響。最後，再用一實際案例以驗證其分析結果，進而了解到垂直地震加速度分量對建築物之影響。 | |||
| 摘要(英) | In generally, the
effect of vertical earthquakes on structures is less important than
horizontal earthquakes. Therefore, the influence of vertical earthquake
upon structures can be reasonably ignored excepting for very important
structures. However, the ground accelerations recorded during of Chi-Chi, Northridge and Kobe earthquake demonstrate that the power of vertical earthquakes may be strong enough to damage buildings. Nowadays, the finding has been adopted and thus various Code have taken considerations of such ground motions in the structural design. Consequently, the seismic design is more conservative than before. According to normal practices in constructional design, original construction design was focus on the effect of two horizontal earthquakes and ignore that of the vertical earthquakes. This kind of design concept only made sense to case of deep earthquakes and for buildings far away from the earthquake-prone area, but may not be appropriate for structures within earthquake-prone areas where the vertical ground motion play a very important role in damaging structures. The subject of this research is to find out the potential influences of vertical earthquake upon building structures, particularly for earthquake with high frequency energy. There are three goals to archive; what is the magnification in acceleration responses at different floor levels when building is subjected to under the Chi-Chi earthquake and an artificial high- frequency earthquake, how a high- frequency vertical earthquake affect the moment responses and what is the effect of SSI consideration on structural responses. The study was carried out first by evaluating the SAP2000 software. Secondly, the effect of of SSI consideration was implemented in the numerical models to assess the SSI effect on the natural frequency of structures and the acceleration and moment responses. Finally, using realistic case to verify the summary drawn from the parametric studies and to understand what the vertical ground acceleration may effect the seismic responses of building structures. | |||
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