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Earthquakes and Structures
  Volume 13, Number 5, November 2017, pages 455-464
DOI: http://dx.doi.org/10.12989/eas.2017.13.5.455
 


An ESED method for investigating seismic behavior of single-layer spherical reticulated shells
Ming Zhang, Guangchun Zhou, Yanxia Huang, Xudong Zhi and De-Yi Zhang

 
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.
 
Key Words
    ESED method; ESED-based criterion; failure load; single-layer spherical shell; characteristic point
 
Address
Ming Zhang: School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
Guangchun Zhou: School of Civil Engineering, Harbin Institute of Technology, 73 Huanghe Road, Harbin, 150090, China
Yanxia Huang: School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
Xudong Zhi: School of Civil Engineering, Harbin Institute of Technology, 73 Huanghe Road, Harbin, 150090, China
De-Yi Zhang: School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
 

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