基于桥梁优化理论的有限元模型修正技术  

Modification technology of finite element model based on bridge optimization theory

作　　者：李伶[1] 尹骏晖[1] 杜青[1] 

机构地区：[1]河北工业大学土木工程学院

出　　处：《山西建筑》2011年第1期150-152,共3页Shanxi Architecture

摘　　要：针对桥梁的试验模态和有限元分析模型存在的误差,提出一套可靠的基准有限元模型,并利用基于优化理论的有限元模型修正技术,对一个短跨桥模型进行损伤识别,通过损伤刚度来定量的描述该短跨桥的损伤程度,并得出了一些有益的结论。In view of experimental model of the bridge and errors existing in finite element analysis model, this paper puts forward a set of reliable and standard finite element model, identifies the damage of short-span bridge model with finite element model modification technology based on optimization theory, and describes the damage degree by measuring damage stiffness, and finally obtains some beneficial conclusions.

关 键 词：有限元 优化理论 损伤评估 模型修正 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]