本文選題：泥石流 + 工程易損性　； 參考：《巖土力學(xué)》2014年09期

【摘要】：為將泥石流災(zāi)害損失評(píng)價(jià)由宏觀價(jià)值評(píng)判提升至可為工程服務(wù),曾提出了基于結(jié)構(gòu)損毀程度評(píng)判的工程易損性概念。然而,諸如橋隧工程在遭受泥石流危害時(shí),僅靠結(jié)構(gòu)損毀程度無法正確判定實(shí)際災(zāi)情,會(huì)導(dǎo)致對(duì)功能完全損失而結(jié)構(gòu)受損較輕的受災(zāi)工況"輕"判、功能尚可而結(jié)構(gòu)損毀較重的受災(zāi)工況"重"判。鑒于此,在原有結(jié)構(gòu)損毀程度評(píng)判的基礎(chǔ)上,通過增加承災(zāi)特征、線路規(guī)格、恢復(fù)成本等橋隧工程使用功能的影響因素,形成了既關(guān)注"結(jié)構(gòu)損毀",又重視"功能損失"的泥石流危害橋隧工程易損性評(píng)價(jià)方法。實(shí)例分析表明,該方法克服了單一結(jié)構(gòu)評(píng)判的不足,與現(xiàn)場災(zāi)情更為相符。這豐富并發(fā)展了工程易損性評(píng)價(jià)的內(nèi)涵,使評(píng)價(jià)結(jié)果更為全面、合理,對(duì)正確預(yù)判或驗(yàn)證橋隧工程遭受泥石流危害受災(zāi)情況,合理妥善地準(zhǔn)備或及時(shí)準(zhǔn)確地啟動(dòng)應(yīng)急預(yù)案,具有重要意義。
[Abstract]:In order to improve the evaluation of debris flow disaster loss from macroscopic value evaluation to engineering service, the concept of engineering vulnerability based on structural damage degree evaluation was put forward. However, for example, when bridge and tunnel engineering is damaged by debris flow, it can not correctly judge the actual disaster situation by merely relying on the degree of structural damage, which will lead to the "light" judgment of the disaster condition in which the function is completely lost and the structure is less damaged. Function and structure damage more serious disaster conditions, "heavy" judgment. In view of this, on the basis of the evaluation of the damage degree of the original structure, by increasing the disaster bearing characteristics, line specifications, restoration cost and other factors affecting the use of bridge and tunnel engineering functions, A method to evaluate the vulnerability of debris flow to bridge and tunnel works is formed, which not only pays attention to "structural damage" but also "function loss". The analysis of examples shows that the method overcomes the shortage of single structure evaluation and is more consistent with the disaster situation in the field. This enriches and develops the connotation of engineering vulnerability evaluation, and makes the evaluation results more comprehensive and reasonable. In order to correctly predict or verify the damage of bridge and tunnel projects affected by debris flow, the emergency plans can be properly prepared or started in time and accurately. It is of great significance.
【作者單位】： 中南大學(xué)土木工程學(xué)院;
【基金】：國家自然科學(xué)基金(No.41272376) 鐵道部專項(xiàng)項(xiàng)目(No.2011G017-C) 西部交通建設(shè)科技項(xiàng)目(No.200831800087)
【分類號(hào)】：P642.23;U445.7;U457
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本文編號(hào)：1920414