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題名 | An Iterative Identification Procedure for High-Speed Railway Bridges under Braking Condition=一種分析高速鐵路橋梁受煞車力條件下的疊代識別理論 |
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作者 | 黃銘智; 陳振華; 黃俊榮; 陳唐徵; | 書刊名 | 航空技術學院學報 |
卷期 | 5:1 民95.08 |
頁次 | 頁381-390 |
分類號 | 442.54 |
關鍵詞 | 系統識別; 橋梁-土壤互制; 高速鐵路橋梁; 單一移動載; System identification; Bridge-soil interaction; High-speed railway bridges; Single moving vehicle; |
語文 | 英文(English) |
中文摘要 | 本文旨在發展一系統識別理論,以識別出高速鐵路橋梁於受單一移動載具煞車力與加速度力作用下之動態參數,此橋梁系統將以橋梁-土壤互制系統模擬之。分析時將考慮橋梁基礎與周圍土壤間之動態互制作用。橋柱視為線性模型,橋梁基礎以等值基礎彈簧模擬之。此法有別於一般之系統識別理論,因一般之系統識別方法僅能識別出模態參數,但具有實際物理意義的系統參數則更具意義與實用性。本文所提出之識別方法,可提供互制系統動態反應之預測與獲得互制系統之實際動態參數,據此實際下傳至橋柱底之剪力即可被預測。此實有助於高速鐵路橋梁受移動載具緊急煞車力作用下,橋體之安全性評估。 |
英文摘要 | This paper intends to develop an identification process for investigating the dynamic characteristics of a high-speed railway bridge under braking condition by using a bridge-soil interaction system. The dynamic interaction of the bridge-foundation with the underlying soil is taken into account. A linear model is used for the pier while an equivalent foundational model is chosen for the pile-soil system. The proposed algorithm can extract the physical system parameters rather than the mode ones. Those parameters are more meaningful and useful. The proposed method respectively provides prediction and determinism of dynamic responses and characteristics of the interaction-system; therefore, the actual bottoms shear forces of piers also are able to be predicted. Those are more useful and helpful for the safety evaluation of high-speed railway bridges under sudden braking of the moving vehicles. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。