外文翻譯---通過建筑結(jié)構(gòu)設(shè)計(jì)以改善建筑物的抗倒性(存儲(chǔ)版)
【正文】 ndsson and Izzuddin 2010）。*c 一個(gè)現(xiàn)實(shí)的知名的破壞的準(zhǔn)則應(yīng)該被使用。該方法的完整細(xì)節(jié)，無論是原來利用ADAPTIC執(zhí)行計(jì)算的形式還是在它的簡(jiǎn)化形式，應(yīng)該都能在帝國(guó)文件中被找到（212）。 2009, pp. 105122. [8] Nethercot DA, Stylianidis P, Izzuddin BA, and Elghazouli AY. Resisting Progressive Collapse by the Use of Tying Resistance, 4th International Conference on Steel amp。 PhD Thesis, Department of Civil and Environmental Engineering, Imperial College London。 2009, pp. 13 119. [6] Nethercot DA. Progressive Collapse Analysis of Steel and Composite Frame Structures. AIAS Maratea。*c 定量對(duì)比替代結(jié)構(gòu)安排可能容易就能做出。*c 程序應(yīng)該由一序列的在概念中廣泛相似于那些用于“傳統(tǒng)”的結(jié)構(gòu)設(shè)計(jì)的步驟構(gòu)成*c 從實(shí)際出發(fā)，合理的，能夠?qū)崿F(xiàn)在一個(gè)復(fù)雜水平上的一個(gè)品種——伴隨選擇反映結(jié)構(gòu)的重要性。 Nethercot et al 2010b）都建議綁扎力相關(guān)較弱和實(shí)際抗力去抗連續(xù)倒塌?？梢哉f，一個(gè)不成比例的反應(yīng)在風(fēng)險(xiǎn)/后果是很低/很輕的地方要求昂貴的附加條款的情況下，也許如同未能解決那些情況在風(fēng)險(xiǎn)/后果是高/嚴(yán)重的地方一樣有害。不僅導(dǎo)致了在某種意義上不提供防火時(shí)明顯的經(jīng)濟(jì)效益,在它給了只有微不足道的好處的時(shí)候；它也導(dǎo)致了消防安全通道更好的調(diào)節(jié)原則的理解和明智的行事能力在設(shè)計(jì)適合安排一個(gè)合適的評(píng)估基礎(chǔ)上的需要。*c 改進(jìn)過的性能的科學(xué)知識(shí)。 the best of these–which are likely to be putationally very demanding–have demonstrated their ability to closely replicate actual observed behaviour.3. Essential features of progressive collapse Three features have previously (Nethercot 2010) being identified as essential ponents of any reasonably realistic approach to design against progressive collapse:*c Events take place over a very short timescale and the actual failure is therefore dynamic.*c It involves gross deformations, generating large strains, leading to inelastic behaviour as well as change of geometry effects.*c Failure essentially corresponds to an inability of the structure in its damaged state to adopt a new position of equilibrium without separation of key elements.Figure 2: Simplified multilevel approach for progressive collapse assessment Additional features, designed to make the approach attractive for use by practicing Engineers have also been proposed (Nethercot 2010):*c Process should consist of a series of steps broadly similar in concept to those used for “conventional” structural design.*c It should, preferably, be capable of implementation at a variety at levels of plexity–with the choice reflecting the importance of the structure.*c Any required analysis should utilise familiar techniques。外文原稿2The Twelfth East AsiaPacific Conference on Structural Engineering and Construction Design of Building Structures to Improve their Resistance to Progressive Collapse D A Nethercota a Department of Civil and Environmental Engineering, Imperial College LondonAbstract：It is rare nowadays for a “new topic” to emerge within the relatively mature field of Structural Engineering. Progressive collapseor, more particularly, understanding the mechanics of the phenomenon and developing suitable ways to acmodate its consideration within our normal frameworks for structural designcan be so regarded. Beginning with illustrations drawn from around the world over several decades and culminating in the highly public WTC collapses, those features essential for a representative treatment are identified and early design approaches are reviewed. More recent work is then reported, concentrating on developments of the past seven years at Imperial College London, where a prehensive approach capable of being implemented on a variety of levels and suitable for direct use by designers has been under development. Illustrative results are used to assist in i
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