某大型火力发电厂钢结构主厂房结构方案设计与动力特性分析

发布时间：2018-03-06 08:43

本文选题：钢结构厂房　切入点：结构体系　出处：《西安建筑科技大学》2013年硕士论文　论文类型：学位论文

【摘要】：火力发电一直是我国电源结构中的主力，其直接关系到城市用电的正常供应，必须需要较高的抗震设防准则以保证工程结构的安全性。近年来，随着装载机组容量的增大和高烈度地区电厂数量的增加，传统钢筋混凝土框排架结构所存在的诸多问题如：底层柱截面过大、轴压比超限等已难以满足需求。随着钢结构在我国的快速发展，大型火力发电厂主厂房越来越多的采用此类结构形式。大型火力发电厂主厂房工艺布置复杂，楼层布置不规则，属于刚度和质量分布严重不均匀的结构，结构设计较为复杂且需同时考虑诸多因素。通常对于大型火力发电厂钢结构主厂房的研究主要集中在节点或支撑等单一影响因素对于结构整体性能的影响，而对于多因素耦合影响的研究较少。本文在总结以往大型火力发电厂钢结构主厂房设计经验的基础之上，，以某较为常见的前煤仓双钢框架火力发电厂主厂房为模型，对于该厂房结构设计中所涉及到的结构材料的选取，结构体系的选择，节点连接处的构造与设计以及框架柱计算长度系数的取值进行了研究，并为提高此类结构的安全性设计提出了一些建议。从而为该类结构的设计提供较为合理的依据。
[Abstract]:Thermal power generation has always been the main force of power supply structure in China, which is directly related to the normal supply of electricity in cities. With the increase of loaders' capacity and the number of power plants in high intensity areas, many problems of traditional reinforced concrete frame bent structure such as: the section of bottom column is too large, With the rapid development of steel structure in our country, the main building of large thermal power plant is more and more adopting this kind of structure form. The main powerhouse of large thermal power plant has complex process layout and irregular floor arrangement, which is a structure with serious uneven distribution of stiffness and mass. The structural design is more complicated and many factors should be considered simultaneously. Usually, the research on the steel structure main building of large thermal power plant is mainly focused on the influence of single factors such as joints or braces on the overall performance of the structure. On the basis of summing up the design experience of the steel structure main building of large thermal power plant, this paper takes a common former coal bunker double steel frame thermal power plant as the model. The selection of structural materials, the selection of structure system, the construction and design of joint joint and the calculation length coefficient of frame column are studied in this paper. Some suggestions are put forward to improve the safety design of this kind of structure, so as to provide a more reasonable basis for the design of this kind of structure.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU391;TU311.3

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