| 研究生: |
林煒松 Lin, Wei-Sung |
|---|---|
| 論文名稱: |
採用不同振動台進行即時複合實驗之效能探討 Performance Evaluation of Real-Time Hybrid Testing through Shaking Tables |
| 指導教授: |
朱世禹
Chu, Shih-Yu |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 土木工程學系 Department of Civil Engineering |
| 論文出版年: | 2018 |
| 畢業學年度: | 106 |
| 語文別: | 中文 |
| 論文頁數: | 159 |
| 中文關鍵詞: | 振動台實驗 、即時複合實驗 、振動台即時複合實驗誤差指標 、多自由度複合實驗誤差指標 、可變摩擦機構 |
| 外文關鍵詞: | real time hybrid test, shaking table test, multi-degree of freedom, friction controllable system, real-time hybrid testing error index |
| 相關次數: | 點閱:161 下載:9 |
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能替代振動台實驗且具有經濟性之方法其一為傳統結合油壓制動器與反力牆之擬動態實驗,而為了使傳統擬動態實驗之加載速率更接近真實結構系統之反應,本文提出與振動台結合之即時複合實驗技術。即時複合實驗係將次結構置於振動台台上,並回授次結構系統之層間總剪力進行數值運算,同時以振動台呈現主結構系統之反應,為一種實現次結構與主結構互制之即時實驗技術。然而即時複合實驗的可信度受到振動台本身的效能影響,如振動台油壓系統的複雜程度以及振動台對於致動器的控制性能等,都有可能影響即時複合實驗的精度。因此本文採用半主動壓電式摩擦機構作為次結構系統,於本文中利用振動台即時複合實驗誤差指標,套用在進行過振動台實驗的即時複合實驗。其中,該即時複合實驗在兩種振動台上進行,因此藉由即時複合實驗誤差指標來分析振動台對於進行即時複合實驗與振動台實驗的擬合程度,以比較兩種振動台對於執行即時複合實驗的好壞。同時,針對不具有振動台實驗的多自由度複合實驗,藉由在不同振動台上重複相同的即時複合實驗架構,套用經由振動台即時複合實驗誤差指標改良的多自由度複合實驗誤差指標來加以說明兩個振動台的特性。
The pseudo-dynamic test is a combination of numerical analysis and experimental test that can emulate the dynamic behavior of structure under environmental loading such as seismic event. In order to make the loading rate of traditional pseudo-dynamic tests more similar to the reaction of the real structure system, this paper presents a real-time hybrid testing (RTHT) technique combining with a shaking table. The key interface of RTHT is the feedback inter-story shear force between the experimentally physical substructure that directly installed on a shaking table and the main structure, where the main structure is numerically simulated by a shaking table. This essay evaluates the applicability of RTHT of a semi-active piezoelectric friction mechanism by comparing its performance with shaking table test. Because the reliability of the RTHT is affected by the performance of the vibrator itself due to the complexity of the oil pressure system and the control performance of the shaking table to actuators, etc, the real-time hybrid testing with shaking table (RTHT-ST) error index of the vibration table is used to apply to the real-time composite experiment of the shaking table test, conducted on two shaking platforms. RTHT-ST error indicators to analyze the shaking table for the fitting degree between the RTHT and the shaking table test. For the multi-degree of freedom (MDOF) structures tested through RTHT without shaking table test, by repeating the same RTHT testing structure on different vibration platforms, to paraphrase via MDOF-RTHT error index improved by RTHT-ST error index to explain the characteristics of the two shaking table.
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