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作者:

He, Haoxiang (He, Haoxiang.) | Cheng, Shitao (Cheng, Shitao.) | Chen, Yifei (Chen, Yifei.)

收录:

EI Scopus SCIE

摘要:

Performance indicators such as energy, stiffness and displacement are the key parameters to evaluate the damage degree of structures or members subjected to earthquake. Establishing accurate and effective damage models based on these parameters is very necessary for performance-based seismic design. The current damage models have some deficiencies in dynamic mechanism, threshold range, accuracy and applicability. According to the mechanism of energy dissipation, it is assumed that the damage of structures and members is closely related to the difference between the ideal elastic-plastic deformation energy and the actual elastic-plastic deformation energy. This differential ratio can be used to represent the damage degree and damage evolution. Based on this, the damage model based on differential ratio of elastic plastic dissipated energy is proposed, and the specific calculation methods under monotonic static load, quasi-static load and dynamic load are given, respectively. Further, the damage index ranges corresponding to different damage grades are determined, and the application ranges and characteristics of different damage models are compared. The applicability and accuracy of damage model based on differential ratio of elastic plastic dissipated energy in members and structures subjected to different load are verified by damage assessment of the shear wall (static load), one 6-story RC frame structure (static load, seismic load) and one 12-story RC frame structure (shaking table test). The analysis results proved the damage model proposed in this paper has the advantages of clear mechanism, strict threshold, widely application range and can characterize the dynamic evolution of damage.

关键词:

Energy-based seismic design Earthquake Seismic response Earthquake damage model Damage index Hysteretic energy

作者机构:

  • [ 1 ] [He, Haoxiang]Beijing Univ Technol, Beijing Key Lab Earthquake Engn & Struct Retrofit, Beijing 100124, Peoples R China
  • [ 2 ] [Cheng, Shitao]Beijing Univ Technol, Beijing Key Lab Earthquake Engn & Struct Retrofit, Beijing 100124, Peoples R China
  • [ 3 ] [Chen, Yifei]Beijing Univ Technol, Beijing Key Lab Earthquake Engn & Struct Retrofit, Beijing 100124, Peoples R China

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来源 :

BULLETIN OF EARTHQUAKE ENGINEERING

ISSN: 1570-761X

年份: 2022

期: 5

卷: 20

页码: 2719-2749

4 . 6

JCR@2022

4 . 6 0 0

JCR@2022

ESI学科: GEOSCIENCES;

ESI高被引阀值:38

JCR分区:1

中科院分区:2

被引次数:

WoS核心集被引频次: 12

SCOPUS被引频次: 12

ESI高被引论文在榜: 0 展开所有

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