薛建阳1，梁炯丰1,2，彭修宁1,3，史祝1

（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）

 

［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。

［关键词］框排架结构；大型火电厂；静力弹塑性；抗震性能

中图分类号：TU271.1        文献标识码：A        文章编号：1002-848X(2013)04-0071-03

 

Xue Jianyang1, Liang Jiongfeng1,2, Peng Xiuning1,3, Shi Zhu1

（1 College of Civil Engineering, Xi′an University of Architecture & Technology, Xi′an 710055, China; 2 College of Architecture Engineering, East China Institute of Technology, Nanchang 330013, China; 3 Postdoctoral Station of Guangxi Electric Power Industry Investigation Design and Research Institute， Nanning 530023, China)

 

Abstract: 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 frame-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.

Keywords: frame-bent structure; large thermal power plant; static elastic-plastic; seismic performance

*国家自然科学基金（50978217），中国博士后科学基金（20080440814）。

作者简介：薛建阳，博士，教授，Email：jianyang_xue@163.com。

 

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