地震工程学报2016，Vol.38Issue(5)：673-677,5.DOI:10.3969/j.issn.1000-0844.2016.05.0673
近海大气环境下钢框架自振频率评估研究
Assessment of Natural Frequency of Steel Frames in Offshore Atmospheric Environment
摘要
Abstract
Steel space structures in coastal areas are often exposed to the open air so are inevitably subjected to atmospheric corrosion.In this paper,we draw from the fields of material science and structural analysis to present a framework for evaluating potential damage from atmospheric cor-rosion to steel space structures in coastal areas.We derive equations that relate structural natural frequency sensitivity to structural member thickness and consider both the inner and outer surface corrosion of the structural member.Using an actual large steel space structure as an example,we examine the feasibility of our proposed approach and assess the potential structural damage caused by atmospheric corrosion.The results demonstrate that atmospheric corrosion does not obviously affect the natural frequencies of the structure but does redistribute the stress and some of the structural members may undergo large stress changes.关键词
近海大气环境/钢框架/损伤评估/自振频率Key words
coastal atmosphere/steel frame/damage assessment/natural frequency分类
建筑与水利引用本文复制引用
郑山锁,石磊,郑捷,周炎,张秋石,朱揽奇..近海大气环境下钢框架自振频率评估研究[J].地震工程学报,2016,38(5):673-677,5.基金项目
"十二五"国家科技支撑计划(2013BAJ08B03) （2013BAJ08B03）
国家自然科学基金(51678475) （51678475）
教育部高等学校博士学科点专项科研基金(20136120110003) （20136120110003）
