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

作者：Zhang, Ming^*; Zhou, Guangchun; Huang, Yanxia; Zhi, Xudong; Zhang, De-Yi

来源：Earthquakes and Structures, 2017, 13(5): 455-464.

DOI：10.12989/eas.2017.13.5.455

• ESED method
• ESED-based criterion
• failure load
• single-layer spherical shell
• characteristic point

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.

• 出版日期2017-11
• 单位哈尔滨工业大学; 西南交通大学