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  • 主管单位:
  • 上海市教育委员会
  • 主办单位:
  • 上海理工大学
  • 主  编:
  • 庄松林
  • 地  址:
  • 上海市军工路516号
  • 邮政编码:
  • 200093
  • 联系电话:
  • 021-55277251
  • 电子邮件:
  • xbzrb@usst.edu.cn
  • 国际标准刊号:
  • 1007-6735
  • 国内统一刊号:
  • 31-1739/T
  • 邮发代号:
  • 4-401
  • 单  价:
  • 15.00
  • 定  价:
  • 90.00
周奎,刘怡然,徐晨光.基于损伤柔度曲率的塔式起重机塔身结构损伤识别研究[J].上海理工大学学报,2022,44(6):562-567.
基于损伤柔度曲率的塔式起重机塔身结构损伤识别研究
Damage identification of tower crane structure based on flexibility curvature
投稿时间:2021-08-22  
DOI:10.13255/j.cnki.jusst.20210822002
中文关键词:  塔式起重机  损伤检测  柔度曲率  数值模拟
英文关键词:tower crane  damage detection  flexibility curvature  numerical simulation
基金项目:
作者单位
周奎 上海理工大学 环境与建筑学院上海 200093 
刘怡然 上海理工大学 环境与建筑学院上海 200093 
徐晨光 上海理工大学 环境与建筑学院上海 200093 
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中文摘要:
      塔式起重机自身结构特征及其高空作业的属性导致其属于高危特种设备,极易发生重大伤亡事故,当塔机发生微小损伤时及时发现并检修是规避事故风险的基础和前提。以上海某大学新建项目工地上的QTZ100型塔式起重机为工程背景,将损伤柔度曲率作为损伤指标,通过构建有限元计算模型,分析多种微小损伤情况下结构应力与模态参数变化规律,与振型变化率作为损伤指标的分析结果作对比。研究表明,损伤柔度曲率曲线在损伤处产生了明显突变,可以识别出微小损伤发生的位置及损伤程度,且抗噪性能较好。
英文摘要:
      Tower cranes belong to the high-risk special equipment due to their own structural characteristics and the attributes of high-altitude operation, and they are prone to heavy casualties. When tower cranes have minor damage, timely detection and maintenance are the basis and premise to avoid the risk of accidents. Based on the engineering background of QTZ100 tower crane on a new project site of a university in Shanghai, the damage compliance curvature was taken as the damage index. The finite element calculation model was built to analyze the variation of structural stress and modal parameters under various minor damage conditions, and compared with the analysis results using the change rate of vibration mode as the damage index. Results show that the damage compliance curvature curve produces obvious mutation at the damage point, through which the location and degree of minor damage can be identified with good anti-noise performance.
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