大型火电厂钢结构主厂房静力弹塑性分析

英文篇名：Static elastic-plastic analysis of steel frame-bent structures of large thermal power plant main buildings
中文刊名：建筑结构
英文刊名：Building Structure
作者：薛建阳 ; 梁炯丰 ; 彭修宁 ; 史祝
英文作者：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)
中文关键词：框排架结构 ; 大型火电厂 ; 静力弹塑性 ; 抗震性能
英文关键词：frame-bent structure ; large thermal power plant ; static elastic-plastic ; seismic performance
出版日期：2013-02-25
机构：西安建筑科技大学土木工程学院;东华理工大学建筑工程学院;广西电力工业勘察设计研究院博士后工作站;
年：2013
期：04
出版单位：建筑结构

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 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.

引文

[1]范建忠.大型火电厂主厂房的结构选型[J].福建电力与电工,1995,15(4):22-25.
    [2]彭修宁,薛建阳,刘祖强,等.刚性钢框架异型节点性能及设计方法[J].土木建筑与环境工程,2010,32(3):22-26.
    [3]薛建阳,刘祖强,彭修宁,等.钢结构异型节点受力性能及非线性有限元分析[J].西安建筑科技大学学报,2010,42(5):609-613.
    [4]薛建阳,胡宗波,彭修宁,等.钢结构箱形柱与梁异型节点破坏机理的试验研究[J].建筑结构学报,2010(S1):50-54.
    [5]薛建阳,刘祖强,胡宗波,等.钢框架异型节点核心区的受剪机理及承载力计算[J].地震工程与工程振动,2010,30(5):37-41.
    [6]FEMA 273—1997 Nehrp guidelines for the seismicrehabilitation of buildings[S].1997:108-112.
    [7]GUPTA B,KUNNATH S K.Adaptive spectra-basedpushover procedure for seismic evaluation of structures[J].Earthquake Spectra,2000,16(2):367-391.