土木工程論文外文翻譯(中文---不確定性橋梁車輛系統(tǒng)動態(tài)分析的模型-橋梁設(shè)計-資料下載頁
2025-01-19 08:34本頁面
【導(dǎo)讀】本文提出了關(guān)于車橋不確定的相互作用動態(tài)分析方法。把一座橋模擬成一簡支梁歐拉。伯努利簡支梁，移動荷載作用在其頂部。該荷載隨著時間的變化產(chǎn)生不同的變異系數(shù)，這。被認(rèn)為是高斯隨機(jī)過程。車橋系統(tǒng)的數(shù)學(xué)模型,建立在系統(tǒng)的有限元模型上,其中。KarhunenLoeve擴(kuò)展代表高斯隨機(jī)過程，用Newmark-?方法與蒙特卡洛法相比,，在力的作用下均值和結(jié)構(gòu)反應(yīng)的結(jié)果是非常準(zhǔn)確的。方法的比較，文中提出的方法在計算效率也有優(yōu)異的性能。近年來橋梁狀態(tài)的評估在研究人員中是很受歡迎的。大的需要加以考慮的力將會出現(xiàn)。受到移動車載負(fù)荷的橋梁動力響應(yīng)結(jié)構(gòu)已經(jīng)被研究了十年之久。的簡支梁和連續(xù)梁。Green和Cebon給出了歐拉伯努利梁的動態(tài)響應(yīng)。在頻域下使用迭代過程，來解決“quarter-car”車輛模型。下以橋梁車輛系統(tǒng)之間的互動關(guān)系將載荷作用的連續(xù)橋面轉(zhuǎn)化為各向同性。在ISO標(biāo)準(zhǔn)中根據(jù)其譜線密度的定義，路面不平度被認(rèn)為是不。隨機(jī)性可能會成為非常大的,當(dāng)?shù)缆窢顩r惡劣時根據(jù)ISO標(biāo)準(zhǔn)，該力的變異系數(shù)會超過,
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