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【正文】 NZSEE, 2006) remend empirical simplified expressions between the height of a building type and its fundamental period. Such expressions were calibrated keeping in mind a forcebased design (Goel and Chopra, 1997), thus intentionally aim at underestimating period values. For this reason they usually provide rather low values when pared to those ones obtained keeping in mind a displacementbased design (see . Chopra and Goel, 2000), also when the latter were obtained from numerical simulations performed on carefully set up models (see . Crowley and Pinho, 2004。這種效果也可以作為一種診斷工具，對(duì)周?chē)恼駝?dòng)測(cè)量很有幫助(布丁和漢斯，2008)。這個(gè)問(wèn)題的處理在于這個(gè)增加量到底是多少？一般來(lái)說(shuō)這種答案是不可能的，因?yàn)樗Q于建筑類(lèi)型和土壤類(lèi)型。結(jié)構(gòu)工程師們認(rèn)為盡管建筑物和土壤的自振周期和地震周期都非常的接近。一個(gè)概述不同的方式比較確切的結(jié)果刊登在馬西和馬里奧(2008)；另外，一個(gè)高級(jí)的表達(dá)式來(lái)指定更有說(shuō)服力的堅(jiān)固建筑類(lèi)型，提出了更加準(zhǔn)確的結(jié)構(gòu)參數(shù)表(建筑高度，開(kāi)裂，空隙填實(shí)，等等)。這樣的表達(dá)式被牢記在心，得出標(biāo)定設(shè)計(jì)(高爾和喬譜拉人，1997)，從而人為的低估了標(biāo)準(zhǔn)周期。外文原文出處:NATO Science for Peace and Security Series C: Environmental Security, 2009, Increasing Seismic Safety by Combining Engineering Technologies and Seismological Data, Pages 147149
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