Earthquakes and Structures

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An ESED method for investigating seismic behavior of single-layer spherical reticulated shells

  • Zhang, Ming (School of Civil Engineering, Southwest Jiaotong University) ;
  • Zhou, Guangchun (School of Civil Engineering, Harbin Institute of Technology) ;
  • Huang, Yanxia (School of Civil Engineering, Southwest Jiaotong University) ;
  • Zhi, Xudong (School of Civil Engineering, Harbin Institute of Technology) ;
  • Zhang, De-Yi (School of Civil Engineering, Southwest Jiaotong University)
  • Received : 2017.01.04
  • Accepted : 2017.12.11
  • Published : 2017.11.25
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Abstract

This paper develops a new method for analyzing the structural seismic behavior of single-layer reticulated shells based on exponential strain energy density (ESED). The ESED method reveals a characteristic point from a relationship between ESED sum and peak seismic acceleration. Then, the characteristic point leads to an updated concept of structural failure and an ESED-based criterion for predicting structural failure load. Subsequently, the ESED-based criterion and the characteristic point are verified through numerical analysis of typical single-layer reticulated shells with different configurations and a shaking table test of the scale shell model. Finally, discussions further verify the rationality and application of the ESED-based criterion. The ESED method might open a new way of structural analysis and the ESED-based criterion might indicate a prospect for a unified criterion for predicting seismic failure loads of various structures.

Keywords

Acknowledgement

Supported by : Chinese National Natural Science Foundation

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