um documento que fala sobre a análise de estruturas na ocorrência sísmica. Contexto:
"In this approach, the effective stress site response code DESRA II (Lee et al., 1978) was used as input to the SPASM 8 model, with degradation of the p-y backbone curve carried out in proportion to the excess pore pressure generation calculated by DESRA II." A dúvida é só mesmo no "backbone".
The translation workplace 
Zustimmung (Netto): +1