斜塔斜拉桥的塔梁同步施工方法研究
发布时间：2018-07-23 12:17
【摘要】：本文围绕讨论塔梁同步施工方法是否可以应用于斜塔斜拉桥这一主线，，以福建光泽县桔子洲大桥主桥为研究背景，主要从以下三个方面开展了研究工作： 1）先简单介绍了本文依托工程的有关概况，采用有限元软件MIDAS/Civil建立结构在成桥状态下的模拟模型，并分别按照先塔后梁和塔梁同步两种施工方法的施工流程在软件中添加施工信息并进行正装计算。 2）比对结构分别采用先塔后梁和塔梁同步法进行施工的计算结果，从结构在施工阶段和运营阶段两个方面分析塔梁同步施工法对结构各主要构件的影响，再结合两种施工方法的优缺点，论述塔梁同步施工法的可行性。 3）在研究塔梁同步施工法对结构的影响时，由于斜拉索索力对结构受力具有关键作用，本文将此部分独立为一章。该部分用正装法确定了以设计成桥索力为目标的施工索力，并用正装迭代法确定了以施工索力为目标的斜拉索单元初始张拉力，然后分析了塔梁同步施工法对索力的影响，并对采用塔梁同步施工法进行施工的依托工程索力施工控制结果进行了分析，并依据此结果对塔梁同步法实际应用的效果进行验证。
[Abstract]:This paper discusses whether the synchronous construction method of tower and beam can be applied to the main line of inclined tower cable-stayed bridge, taking the main bridge of Kuangze County, Fujian Province as the research background. The main research work is as follows: 1) this paper introduces the general situation of the project and establishes the simulation model of the structure under the condition of the bridge by using the finite element software MIDAS/Civil. According to the construction flow of the first tower and the back beam and the tower beam synchronously, the construction information is added to the software and the normal installation calculation is carried out. 2) the calculation results of the construction of the structure using the first tower and the rear beam and the tower beam synchronously are compared. This paper analyzes the influence of the tower and beam synchronous construction method on the main components of the structure from two aspects: the construction stage and the operation stage, and then combines the advantages and disadvantages of the two construction methods. The feasibility of tower beam synchronous construction method is discussed. 3) in studying the influence of tower beam synchronous construction method on the structure, because the cable force plays a key role in the structure force, this part is divided into a chapter. In this part, the construction cable force with the design of the bridge cable force as the target is determined by the formal loading method, and the initial tensioning force of the cable-stayed element with the construction cable force as the target is determined by the formal installation iteration method, and then the influence of the tower beam synchronous construction method on the cable force is analyzed. The control results of cable force construction based on tower beam synchronous construction method are analyzed, and the practical application effect of tower beam synchronization method is verified.
【学位授予单位】：武汉理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U448.27
本文编号：2139392
[Abstract]:This paper discusses whether the synchronous construction method of tower and beam can be applied to the main line of inclined tower cable-stayed bridge, taking the main bridge of Kuangze County, Fujian Province as the research background. The main research work is as follows: 1) this paper introduces the general situation of the project and establishes the simulation model of the structure under the condition of the bridge by using the finite element software MIDAS/Civil. According to the construction flow of the first tower and the back beam and the tower beam synchronously, the construction information is added to the software and the normal installation calculation is carried out. 2) the calculation results of the construction of the structure using the first tower and the rear beam and the tower beam synchronously are compared. This paper analyzes the influence of the tower and beam synchronous construction method on the main components of the structure from two aspects: the construction stage and the operation stage, and then combines the advantages and disadvantages of the two construction methods. The feasibility of tower beam synchronous construction method is discussed. 3) in studying the influence of tower beam synchronous construction method on the structure, because the cable force plays a key role in the structure force, this part is divided into a chapter. In this part, the construction cable force with the design of the bridge cable force as the target is determined by the formal loading method, and the initial tensioning force of the cable-stayed element with the construction cable force as the target is determined by the formal installation iteration method, and then the influence of the tower beam synchronous construction method on the cable force is analyzed. The control results of cable force construction based on tower beam synchronous construction method are analyzed, and the practical application effect of tower beam synchronization method is verified.
【学位授予单位】：武汉理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U448.27
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