系杆拱桥结构体系研究

【作者】 孟杰；

【导师】 邵旭东； 赵明华；

【作者基本信息】 湖南大学 ， 桥梁与隧道工程， 2002， 硕士

【摘要】 本文从介绍系杆拱桥的起源、发展过程、研究现状以及发展趋势出发，首先重点结合系杆、吊杆和拱肋等系杆拱桥的主要组成部分的不同布置形式，从力学的角度对系杆拱桥进行结构体系分类并分析不同结构体系系杆拱桥的力学特征，其中重点分析了横向联系对系杆拱桥横向稳定性的影响以及不同吊杆布置形式系杆拱桥的力学特征。 然后本文又以带纵梁的下承式系杆拱桥为例，在分析现有横梁内力计算方法的基础上，详细介绍了一种考虑变形协调原理的系杆拱桥横梁内力计算方法，并利用数学软件MATLAB编制了横梁内力分析的程序。经过实际算例分析，并与ANSYS程序空间计算结果对比，验证了该计算方法和计算程序具有准确和便于计算的优点，符合实际工程设计需要。 最后本文又结合桂林解放桥施工监控项目，对桥梁施工控制理论和方法等作了详细的研究，并具体参与完成了这座国内外首座采用上承式葵形结构的钢筋混凝土系杆拱桥的计算分析和施工控制工作，取得了很好的效果。更多还原

【Abstract】 Started from the introduction of the origins ^ the development process ^ the latest research and its trend of the tied-arch bridge, this paper focuses firstly on the distinguishability of different structural styles of the tied-arch bridge and the analysis of the mechanical behaviors of each type. The lateral stability and the mechanical behaviors of the vertical or inclined hanger tied-arch bridge are also analyzed in this paper.Since there are some defects in the traditional analysis method of cross beam, this paper also introduces a new method which calculates the inner forces of the cross beam considering the compatibility of deformation. Then, this paper presents a program used to analyze the cross beam with MATLAB. To validate this new method and the analysis program, this paper calculates an actual tied-arch bridge with ANSYS and the new program presented in this paper. The results proved that this method and program are convincible and accurate, and also suitable for the practical engineering design.Finally this paper studies the construction control theory and its method with the construction control project of the Jiefang Bridge in Guilin. The Jiefang Bridge is the first one with sunflower-sharp reinforced concrete tied-arch bridge. Now, this bridge is successfully completed and opened to traffic under right construction control.更多还原