【摘要】：摘要：施工線形監(jiān)控是橋梁施工過程的重要組成部分,其監(jiān)控質(zhì)量的好壞直接影響到橋梁的施工質(zhì)量。目前,對施工線形監(jiān)控的研究已經(jīng)取得了一定的成果,但在誤差調(diào)整方面,已有的立模標高計算公式均未對后續(xù)節(jié)段可能產(chǎn)生的誤差進行考慮,使得監(jiān)控具有一定的盲目性。本文針對這一不足展開研究,提出將后續(xù)節(jié)段的可能產(chǎn)生誤差的預測值的反號值作為一個計算參數(shù)來對已有的立模標高計算公式進行優(yōu)化,從而解決傳統(tǒng)監(jiān)控計算盲目性的問題。主要研究成果如下： (1)針對已有立模標高的計算方法的不足進行了分析,指出了現(xiàn)有誤差調(diào)整方法未對后續(xù)節(jié)段可能產(chǎn)生的誤差進行考慮而使得監(jiān)控具有盲目性的不足； (2)在已有立模標高計算公式的基礎上結合施工誤差的特性以及灰色預測理論,提出了將后續(xù)節(jié)段誤差預測值的反號值作為一個計算參數(shù),來對現(xiàn)有立模標高計算公式進行優(yōu)化,在理論上消除了現(xiàn)有誤差調(diào)整方法盲目性的問題； (3)建立了相關的有限元模型,為后續(xù)研究分析提供數(shù)據(jù)基礎； (4)結合優(yōu)化的立模標高計算公式及6數(shù)據(jù)馬爾科夫殘差修正模型對小浹江大橋各節(jié)段誤差進行了預測計算,通過與實測誤差數(shù)據(jù)對比,指出了該優(yōu)化公式可為同跨徑甚至更大跨徑掛籃施工連續(xù)梁橋或連續(xù)剛構橋施工監(jiān)控提供參考借鑒。
[Abstract]:Absrtact: the construction linear monitoring is an important part of the bridge construction process, and the quality of the monitoring directly affects the construction quality of the bridge. At present, some achievements have been made in the research of construction linear monitoring, but in the aspect of error adjustment, none of the existing formulas for calculating the elevation of vertical formwork has taken into account the possible errors in the subsequent segment, which makes the monitoring have certain blindness. In order to solve this problem, this paper proposes that the inverse value of the prediction value of the possible error in the subsequent segment should be taken as a calculation parameter to optimize the existing formulas for calculating the elevation of the vertical model. In order to solve the problem of blindness of traditional monitoring calculation. The main research results are as follows: (1) the shortcomings of the existing methods for calculating the elevation of vertical die are analyzed. It is pointed out that the existing error adjustment methods do not take into account the possible errors in the subsequent segment, which makes the monitoring blind. (2) on the basis of the calculation formula of vertical model elevation, combining with the characteristic of construction error and grey prediction theory, the inverse value of the prediction value of subsequent segment error is proposed as a calculation parameter. In order to optimize the existing calculation formulas of vertical die elevation, the blindness of existing error adjustment methods is eliminated theoretically. (3) the relevant finite element model is established to provide the data basis for the subsequent research and analysis. (4) combining with the optimized elevation calculation formula of vertical model and the modified model of 6 data Markov residuals, the errors of each segment of Xiaojiajiang Bridge are forecasted and calculated, and the results are compared with the measured error data. It is pointed out that the optimization formula can be used for reference for the construction of continuous beam bridge or continuous rigid frame bridge construction with the same span or even more span hanging basket.
【學位授予單位】：中南大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U445.4

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