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首页> 外文期刊>International Journal of Fatigue >Seismic low-cycle fatigue evaluation of welded beam-to-column connections in steel moment frames through global-local analysis
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Seismic low-cycle fatigue evaluation of welded beam-to-column connections in steel moment frames through global-local analysis

机译:通过全局局部分析评估钢制弯矩框架中梁柱连接的地震低周疲劳

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摘要

A general methodology for seismic low-cycle fatigue assessment of welded beam-to-column connection in steel moment resisting frames (SMRFs) is presented. Fatigue deformability curves of seven connection categories are elaborated using the available cyclic tests. Inter-storey drift history imposed on each connection of SMRF is generated by seismic dynamic analysis and adopted in fatigue damage calculation based on Palmgren-Miner's rule and the experimentally determined fatigue curve. The most critical connection identified by preliminary fatigue evaluation is refined with solid finite elements in global-local model where the cyclic void growth model is integrated to give a more accurate fatigue prediction including load sequence effects. The proposed approach is applicable to fatigue evaluation of welded connections in SMRFs under earthquakes.
机译:提出了抗弯矩框架(SMRFs)中焊接梁对柱连接地震低周疲劳评估的通用方法。使用可用的循环试验绘制了七个连接类别的疲劳变形能力曲线。通过地震动态分析生成施加在SMRF各个连接上的层间漂移历史,并根据Palmgren-Miner规则和实验确定的疲劳曲线将其用于疲劳损伤计算。初步疲劳评估确定的最关键的连接在全局局部模型中用实体有限元进行了细化,其中集成了循环空隙增长模型,以提供包括载荷序列效应在内的更准确的疲劳预测。所提出的方法适用于地震作用下SMRF中焊接连接的疲劳评估。

著录项

  • 来源
    《International Journal of Fatigue》 |2014年第7期|97-113|共17页
  • 作者单位

    Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing 100124, China,Beijing Collaborative Innovation Center for Metropolitan Transportation, Beijing 100124, China;

    Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Department of Civil Engineering, Tsinghua University, Beijing 100084, China;

    Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing 100124, China;

    Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Department of Civil Engineering, Tsinghua University, Beijing 100084, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Seismic low-cycle fatigue; Steel moment resisting frame (SMRF); Beam-to-column connection; Global-local model; Cyclic void growth model (CVGM);

    机译:地震低周疲劳;钢制抗力矩框架(SMRF);梁到柱连接;全球局部模型;循环空隙生长模型(CVGM);

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