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Efficient structural seismic performance evaluation method using improved endurance time analysis

论文摘要

Evaluation of structural performance under seismic excitations from low intensity to high intensity is essential to verify the seismic resistant capacity of a structure, and usually carried out by the incremental dynamic analysis(IDA) method or pushover method. The recently developed endurance time(ET) method is another method that uses dynamic pushover excitations, i.e., endurance time acceleration function, to obtain results similar to those obtained by IDA or pushover methods with low computational cost and acceptable accuracy. This study proposes an improvement on the ET method by considering more restrictions for both the elastic and inelastic response spectra in the generation procedure, and by specifying a target duration. Four reinforced concrete frame structures with 4, 8, 12, and 16 stories are adopted to verify the accuracy of the improved method. Comparison of the results obtained by the proposed method, the ET method and the IDA method shows that the improved method has a higher accuracy than the ET method. For evaluation of structural responses under specific ground motion intensity, which is typically required in seismic design codes, the results obtained by the proposed method are compared with five commonly used ground motion selection methods, and shows the proposed method provides acceptable accuracy for engineering applications.

论文目录

  • 1 Introduction
  • 2 Basis of the ET method
  • 3 Selected ground motions and structures
  • 4 Improvement on the analysis method
  •   4.1 Verification of the ET method
  •   4.2 Generation of the excitation by inelastic response spectrum
  •   4.3 Determination of the target duration
  • 5 Verification under the design earthquake level
  • 6 Conclusion

    • 文章来源

    类型: 期刊论文

    作者: Li Shuang,Liu Kun,Liu Xiangyang,Zhai Changhai,Xie Fengwei

    来源: Earthquake Engineering and Engineering Vibration 2019年04期

    年度: 2019

    分类: 基础科学,工程科技Ⅱ辑

    专业: 建筑科学与工程

    单位: Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology,Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology

    基金: National Key R&D Program of China under Grant No.2016YFC0701500,National Natural Science Foundation of China under Grant No.51578202

    分类号: TU352.11

    页码: 795-809

    总页数: 15

    文件大小: 2644K

    下载量: 18

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