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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