Abstract
In Chinese seismic design codes, soils are divided into four sites (I ~ IV), and each site is divided into three groups (G1 ~ G3) according to the design characteristic period (Tg) again. The current studies only present the near-fault inelastic input energy (SEI) spectra corresponding to each site, while those corresponding to G1 ~ G3 of each site have not been reported. Therefore, in this study, 210 near-fault ground motion (GM) records were selected and classified according to G1 ~ G3 of Sites I ~ IV. By inputting the records into the BISPEC software, the effects of the characteristics of near-fault GMs and the parameters of hysteretic models on the near-fault SEI spectra were studied, and then the near-fault SEI design spectra corresponding to G1 ~ G3 of Sites I ~ IV were established. Moreover, by improving the previous procedure and using the near-fault SEI design spectra, an energy-based procedure for estimating the near-fault input energy of beam bridges was proposed, and its feasibility and safety were verified through a case study.
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