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首頁(yè)> 外文期刊>Construction innovation >A non-linear optimisation technique based on the complex method: The optimal design of a concrete trough supporting a new lightweight rail track system, LR55
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A non-linear optimisation technique based on the complex method: The optimal design of a concrete trough supporting a new lightweight rail track system, LR55

機(jī)譯:基于復(fù)雜方法的非線性?xún)?yōu)化技術(shù):支撐新型輕軌系統(tǒng)LR55的混凝土槽的優(yōu)化設(shè)計(jì)

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摘要

Purpose - The aim is to present findings of a theoretical analysis for optimal design of a concrete trough for a new lightweight low-profile rail track system. Design/methodology/approach - A non-linear numerical optimisation technique is adopted to predict the minimum area of a pre-tensioned pre-stressed trough section satisfying the serviceability and ultimate limit states as per British Standard BS 8110 for critical loading and boundary conditions. Findings - An optimum concrete trough section is calculated to carry all possible load combinations expected during the design life of the track. The performance of the rail, elastomeric pad and track base were found to be satisfactory under the same critical loading and boundary conditions. Originality/value - The theoretical analysis gives a valuable insight into system parameter values that can optimise design performance and cost. However, these optimal design features now need to be tested experimentally.
機(jī)譯:目的-目的是提出一種理論分析的發(fā)現(xiàn),以對(duì)新型輕型薄型軌道系統(tǒng)的混凝土槽進(jìn)行最佳設(shè)計(jì)。設(shè)計(jì)/方法/方法-根據(jù)英國(guó)標(biāo)準(zhǔn)BS 8110的關(guān)鍵載荷和邊界條件,采用非線性數(shù)值優(yōu)化技術(shù)來(lái)預(yù)測(cè)滿(mǎn)足使用性和最終極限狀態(tài)的預(yù)應(yīng)力預(yù)應(yīng)力槽段的最小面積。發(fā)現(xiàn)-計(jì)算出最佳的混凝土槽截面,以承載在軌道設(shè)計(jì)壽命期間預(yù)期的所有可能的荷載組合。發(fā)現(xiàn)在相同的臨界載荷和邊界條件下,軌道,彈性墊和軌道基座的性能令人滿(mǎn)意。獨(dú)創(chuàng)性/價(jià)值-理論分析提供了可優(yōu)化設(shè)計(jì)性能和成本的系統(tǒng)參數(shù)值的寶貴見(jiàn)解。但是,這些最佳設(shè)計(jì)功能現(xiàn)在需要進(jìn)行實(shí)驗(yàn)測(cè)試。

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