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    廖  汶  李海光  姚  嗣
    （上海市建工設(shè)計研究院 200433）

[提要]  以用于磁懸浮列車軌道梁的先張法預(yù)應(yīng)力臺座為工程背景，著重分析上海磁懸浮列車工程的臺座設(shè)計方案及實(shí)際設(shè)計中遇到的問題。用三維有限元計算分析了臺座及其樁的受力和變形特性，并且通過使用階段的實(shí)際觀測驗(yàn)證了計算分析結(jié)果，滿足了實(shí)際工程的需要。
[關(guān)鍵詞]  磁懸浮軌道梁  先張法預(yù)應(yīng)力  張拉臺座

A huge stretching bed design scheme is presented, which is used to produce prestressed track girder of the magnetic levitation railway project. Detailed design analysis of the stretching bed of Shanghai magnetic levitation railway project is made.A 3-D finite element computation, whose results are checked by the actual measurement data on the working structure, is carried out to analyse the mechanical and deformational properties of the bed and pile.
Keywords:  magnetic levitation railway girder; pretensioned prestressing; huge stretching becl