大跨徑懸索橋施工風(fēng)險(xiǎn)分析
本文選題:大跨徑懸索橋 + 模糊層次分析法。 參考:《南昌航空大學(xué)》2017年碩士論文
【摘要】:近年來(lái),伴隨著技術(shù)和結(jié)構(gòu)的創(chuàng)新,大跨徑懸索橋得到了高速發(fā)展。與此同時(shí),由于各種不確定性因素的增加,此類(lèi)橋梁建設(shè)面臨著前所未有的高風(fēng)險(xiǎn),從而在一定程度上制約了其發(fā)展。因此,在建橋梁的風(fēng)險(xiǎn)評(píng)估與預(yù)防控制越來(lái)越重要。本文圍繞大跨徑懸索橋施工風(fēng)險(xiǎn)分析開(kāi)展研究,主要工作包括:(1)將風(fēng)險(xiǎn)理論應(yīng)用于橋梁工程領(lǐng)域,明確橋梁施工風(fēng)險(xiǎn)定義,構(gòu)建橋梁施工風(fēng)險(xiǎn)分析總體框架。(2)結(jié)合大跨徑懸索橋施工特征,從施工技術(shù)、成本費(fèi)用、工期、質(zhì)量、人員安全五個(gè)方面對(duì)大跨徑懸索橋進(jìn)行施工風(fēng)險(xiǎn)分析。通過(guò)查找相關(guān)橋梁建設(shè)施工潛在風(fēng)險(xiǎn)資料構(gòu)建大橋施工風(fēng)險(xiǎn)因素清單,為橋梁施工風(fēng)險(xiǎn)識(shí)別奠定基礎(chǔ)。(3)以模糊層次分析法為基礎(chǔ),建立了加勁梁懸索橋施工風(fēng)險(xiǎn)識(shí)別模型;谀:パa(bǔ)判斷矩陣原理,并借助Matlab編寫(xiě)源代碼求解各風(fēng)險(xiǎn)權(quán)重值并按大小排序,確定大橋施工主要風(fēng)險(xiǎn)因素。(4)運(yùn)用模糊綜合評(píng)價(jià)法,結(jié)合基于ALARP準(zhǔn)則的風(fēng)險(xiǎn)矩陣法及專(zhuān)家調(diào)查法,建立了加勁梁懸索橋施工風(fēng)險(xiǎn)評(píng)估模型。圍繞施工技術(shù)等風(fēng)險(xiǎn)因素從施工概率估計(jì)、損失后果估計(jì)兩方面進(jìn)行施工風(fēng)險(xiǎn)評(píng)估,在此基礎(chǔ)上運(yùn)用Matlab軟件編寫(xiě)程序得出大橋總體施工風(fēng)險(xiǎn)等級(jí)。(5)針對(duì)“五峰山長(zhǎng)江大橋”實(shí)際工程,按本文建立的大跨徑懸索橋施工風(fēng)險(xiǎn)評(píng)估體系對(duì)其進(jìn)行風(fēng)險(xiǎn)評(píng)估,得出大橋施工總體風(fēng)險(xiǎn)等級(jí),針對(duì)風(fēng)險(xiǎn)等級(jí)程度提出了施工風(fēng)險(xiǎn)預(yù)防與控制的相應(yīng)措施。
[Abstract]:In recent years, with the innovation of technology and structure, long-span suspension bridge has been developing at high speed.At the same time, due to the increase of uncertain factors, the bridge construction is facing unprecedented high risk, which restricts its development to a certain extent.Therefore, the risk assessment and prevention and control of the bridge under construction is becoming more and more important.In this paper, the risk analysis of long-span suspension bridge is studied. The main work includes the application of risk theory to bridge engineering, and the definition of bridge construction risk.Based on the construction characteristics of long-span suspension bridge, the construction risk of long-span suspension bridge is analyzed from five aspects: construction technology, cost, time limit, quality and safety of personnel.Based on the fuzzy analytic hierarchy process (FAHP), the construction risk identification model of stiffened girder suspension bridge is established by looking up the relevant bridge construction potential risk data to construct the list of bridge construction risk factors, laying a foundation for bridge construction risk identification.Based on the principle of fuzzy complementary judgment matrix, and with the help of Matlab, the main risk factors of bridge construction are determined by calculating the weight value of each risk and ranking according to the size.) the fuzzy comprehensive evaluation method is used.Combined with the risk matrix method based on ALARP criterion and the expert investigation method, the construction risk assessment model of stiffened girder suspension bridge is established.Based on the construction technology and other risk factors, the construction risk assessment is carried out from two aspects: construction probability estimation, loss consequence estimation,On this basis, the overall construction risk grade of the bridge is obtained by using Matlab software. 5) aiming at the actual project of "Wufengshan Yangtze River Bridge", according to the risk assessment system of the long-span suspension bridge established in this paper, the risk assessment is carried out.The overall risk grade of the bridge construction is obtained, and the corresponding measures to prevent and control the construction risk are put forward in view of the risk grade degree.
【學(xué)位授予單位】:南昌航空大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類(lèi)號(hào)】:U445.1
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