All deck elevations are on the top of structural beams 所有甲板標(biāo)高線均指結(jié)構(gòu)梁頂線。
Based on the differences between the design value and the survey of the bridge deck elevation in constructing the pre - stressed long span bridge , the model parameters are identified by the genetic algorithm , and the pre - stress loss values of different sections are given 建立附加損失的數(shù)學(xué)模型,根據(jù)施工時(shí)的預(yù)應(yīng)力張拉后橋面實(shí)測(cè)標(biāo)高與設(shè)計(jì)值的差異,用遺傳算法識(shí)別損失模型的參數(shù),確定有關(guān)各截面的損失值。
A model with some parameters is used to forecasting the beam camber in the construction . based on the differences between the design value and the survey of the bridge deck elevation in constructing the pre - stressed and so on working condition , the model parameters are identified by ann , and the beam camber of different sections are given 建立施工預(yù)拱度的數(shù)學(xué)模型,根據(jù)施工時(shí)的預(yù)應(yīng)力張拉后等工況橋面實(shí)測(cè)標(biāo)高與設(shè)計(jì)值的差異,用bp神經(jīng)網(wǎng)絡(luò)識(shí)別預(yù)拱度模型的參數(shù),確定有關(guān)各截面的預(yù)拱值。