Abstract
Previous studies have shown that when the lower support structure is considered, the dynamic characteristics of grid structures change significantly, and the stress distributions are also noticeably different. Therefore, this paper discusses whether other simple and feasible structural seismic damage prediction methods could be proposed after accounting for the influence of the lower supporting structure. Considering different site types and different intensities, a time-history analysis was conducted using the mode decomposition response spectrum method for frequent 8- and 9-degree earthquake intensity. Then, the acceleration response spectra for different sites experiencing 8- and 9-degree intensity of frequently occurring earthquakes specified in the Code for Seismic Design of Buildings (GB50011-2010) were used to calculate and discuss the distribution law for the seismic internal forces of space truss structures. Based on the calculation conclusion, the design method and damage prediction method for a plate-like space truss structure under earthquake actions are discussed. Then, a new value of the seismic action coefficient was proposed in this paper, and the ground motion peaks for various types of earthquake damage for different site types were obtained using the functional relationship.
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We thank LetPub (www.letpub.com) for its linguistic assistance during the preparation of this manuscript.
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This work was supported by the National Natural Science Foundation of China (Grant No. 519081571002502).
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Yang, Z., Wang, Z., Yang, Y. et al. Seismic Coefficients and Earthquake Damage Predictions for a Space Truss with a Supporting Structure. Int J Steel Struct 22, 1060–1068 (2022). https://doi.org/10.1007/s13296-022-00622-1
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DOI: https://doi.org/10.1007/s13296-022-00622-1