Abstract：Research purposes :For the purpose of better linear control of super wide deck , the researches are done on the linear control system for main beam of partial cable-stayed bridge with super wide deck, the analyses are made for the influencing factors of deflection change and the causes for the difference in elevation between theoretic values and tested values after bridge closure , and the parameters of calculation model are modified with the tested data.
Research methods :On the basis of the error control theory based on the least bi-multiplication and the construction characteristics of Sanmenjiang Bridge in Liuzhou，the linear control model is established with the software of finite- element analysis to ensure the construction quality by using the tested data and results of theoretic calculation.
Research conclusions: The aracteristics of the deflection and change in elevation of main beam structure of partial cable-stayed bridge with super wide deck are close to the stressed concrete continuous box beam. Using the tested data to modify the parameters of calculation model, a perfect match is achieved between theoretic calculation and the real situation of the bridge，which ensures the safe construction of main beam. In the construction , it is necessary to monitor the distortion in real time and adjust the pre-elevation volume according to the weights of the section.
胡永. 超宽桥面部分斜拉桥主梁线形控制分析[J]. 铁道工程学报, 2007, 24(9): 34-39.
HU Yong. Analysis of Linear Control of Main Beam of Partial Cable-stayed Bridge with Super Wide Deck. 铁道工程学报, 2007, 24(9): 34-39.
2007, Vol. 24 
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