【作者】 何秉倬；

【导师】 赵雷；

【作者基本信息】 西南交通大学 ， 桥梁与隧道工程， 2009， 硕士

【摘要】 近年来,随着我国经济的高速发展,促进了交通事业的同步迅猛发展,作为促进经济增长的重要一环,国家对于交通运输能力也提出了越来越高的要求。修建大跨度、高难度、适应环境并且美观的桥梁成为时代的要求,于是对大跨度桥梁的施工控制的研究应运而生,论文以四川泸州泰安长江大桥为工程背景,对影响大跨度独塔斜拉桥施工控制成败的关键环节之一—参数识别进行了适当研究。大跨度斜拉桥属于超静定结构,施工过程中受到很多随机误差因素的影响,变形较大,使结构难以达到设计预期,于是对施工过程中出现的与理想状态的偏差进行识别处理,及时找出解决办法纠正偏差至关重要。本文首先介绍了斜拉桥的发展、施工控制的发展及施工控制的基本程序和方法,然后运用桥梁结构专业软件BSAS进行施工模拟计算,通过敏感性分析找出了对桥梁结构影响最大的部分参数;然后运用卡尔曼滤波法和优化理论方法对影响桥梁最大的参数各自进行识别,最后对参数识别的结果进行分析以便能对施工有所帮助。更多还原

【Abstract】 In recent years, the economy of our country has obstained greatly development, which promoted the communication enterprise synchronized swift development, as one of the key factors promoting economic growth, our country set the more and more high request to the transportation ability. Constructing the long-span, the high difficulty, the adaptation environment and the artistic bridge has become the request of the time, so the research of long-span bridge’s construction control technology appeared as the request of the time, this paper took a certain bridge construction project of Taian Yangtze River Cable-Stayed Bridge in Luzhou as the example to study parameter identification for the successful key of bridge construction control of long span cable-stayed bridge.The cable-stayed bridge is a hyperstatic structure. Making the structure to attain the design expected state is difficult because of large deformation and stochastic error influence on construction process. So,finding certain means to solve the disagreement of the practice state and design state is very important.Firstly, this paper introduces briefly history of cable-stayed bridge, development and main routine of the construction control technologies.A software analyzing bridge structure, BSAS,is used in the simulation of the bridge construction process to find the most influential parameter to the bridge structure with sensitivity analysis. secondly,the Kalman filter method and the Optmization theory are used to identify the parameter that is the most influential parameter to the bridge structure,lastly, analysising the results of parameter identification to conduct the construction.更多还原