大型火电厂钢结构主厂房静力弹塑性分析  

Static elastic-plastic analysis of steel frame-bent structures of large thermal power plant main buildings

作　　者：薛建阳[1] 梁炯丰[1,2] 彭修宁[1,3] 史祝[1] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]东华理工大学建筑工程学院,南昌330013 [3]广西电力工业勘察设计研究院博士后工作站,南宁530023

出　　处：《建筑结构》2013年第4期71-73,54,共4页Building Structure

基　　金：国家自然科学基金(50978217);中国博士后科学基金(20080440814)

摘　　要：主厂房框排架是火力发电厂的主要承重结构,受工艺布置要求的限制,其质量、刚度分布不均匀。为了解大型火电厂钢框排架主厂房的变形能力、薄弱部位、受力机理及其破坏机制,采用静力弹塑性分析方法对其抗震性能进行研究。研究结果表明:主厂房横向框排架和纵向框架-支撑结构存在较多的薄弱部位,设计时应予以加强;煤斗梁的刚度超强,对结构内力及薄弱层分布产生影响,钢框排架延性相对较好,具有较强的塑性变形能力和抗震能力。The frame-bent structure is the main load-supporting structure in thermal power plants. The distributions of the structural mass and stiffness are non-uniform due to the production layout requirements. The static elastic-plastic analysis method was used to study the deformation, weak parts, loading capacity and failure mechanisms of steel flame-bent structures of large thermal power plants main buildings. The results show that the steel frame-bent structure has good ductility, strong plastic deformation capacity and seismic performance. However, there are much weak parts in the horizontal frame-bent and longitudinal frame-supporting structures, which must be strengthened when designed. The coal hopper beams have great stiffness, which have influences on the distribution of internal force and weak story of the structure.

关 键 词：框排架结构 大型火电厂 静力弹塑性 抗震性能 

分 类 号：TU271.1[建筑科学—建筑设计及理论]