大型火力发电厂框排架混合结构主厂房动力特性试验与分析  

Experiment and analysis of dynamic characteristics of a main building with frame-bent structures in large thermal power plants

作　　者：康灵果[1] 白国良[1] 李红星[2] 李晓文[1] 赵春莲[2] 刘林[1] 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]西北电力设计院,陕西西安710032

出　　处：《世界地震工程》2009年第4期103-107,共5页World Earthquake Engineering

基　　金：陕西省教育厅重点实验室重点科研项目(03JS019)

摘　　要：选取1000MW大型火力发电厂新型混合结构主厂房体系的三跨三榀进行缩尺比为1/7的空间模型试验研究。采用锤击法测试模型结构的动力特性,得到其自振频率和振型,并根据相似关系换算到原型结构。使用SAP2000软件建立混合结构主厂房模型和原型结构的有限元模型,进行模态分析,得到模型和原型结构的频率和振型,并与试验结果进行对比分析。可为大型火力发电厂新型混合结构主厂房体系的抗震性能研究提供依据。A 1/7 scale space model experiment of three spans and three frames has been carried out,which are made from a new main building with frame-bent structures in 1 000MW large thermal power plants . The natural vibration frequencies and mode shapes of experimental model were obtained with hammering method, and dynamic characteristics of prototype structure are acquired according to similarity relationships. The finite element model of the prototype structure in the main building built with SAP2000 software is used to analyze structural modal. The natural vibration frequencies and mode shapes of the structure are obtained and compared with experimental results. The results provided for a base for study on seismic performance of the main building with frame-bent structures in 1 000MW large thermal power plants.

关 键 词：混合结构主厂房 动力特性 模型试验 模态分析 

分 类 号：TU375[建筑科学—结构工程] P315.97[天文地球—地震学]