大型桥梁结构基于ANSYS的优化分析与数值模拟-结构工程专业论文.docx

华 华 中 科 技 大 学 硕 士 学 位 论 文 II II ABSTRACT With the development of Chinas national economy and strong investment of national infrastructure construction, Nowadays Engineering structures appear the Phenomenon of Large volume,ultra height , intricacy of building structure, diversification of visual effects , ahead of the design ideas (mainly current design level beyond the level of theoretical research , a large number of super- regulatory buildings came into being ).The way to solve these difficulties are the accumulation of experience in engineering and raise the level of theoretical research.In specific complex engineering,the numerical simulation analysis of engineering structures is one of the key technologies of complex structural design and forming . At first,This paper expounded the development process and the Research status of the numerical simulation;Summarized the characteristics and difficulties of the numerical simulation of complex structures.Then combining with engineering examples(fasting rigid frame bridge on Guizhou Beipan River and cable-stayed bridge on Zhaoqing River),made a numerical simulation analysis of specific projects in ANSYS.Numerical simulation results and specific project implementation process shown that the method was effective and the result was reasonable to handle large complex bridge structures of local model numerical simulation. The main contents of the thesis is as follows: Numerical Simulation study of reasonable angle of hollow district of hollow rigid frame Beipanjiang bridge used super beam elements in ANSYS.obtained the main parameters of the fasting district under the state of cantilever construction. the length of the horizontal section of hollow district is about 45 meters, when Angle α between the lower chord and the pier is approximately 53° to 60 °,the mechanical properties of the hollow district are relatively best. While taking into account the construction sequence,introduced the method of linear programming,to en