【摘要】：隨著交通基礎(chǔ)設(shè)施的發(fā)展，組合梁斜拉橋以其快捷的施工速度、優(yōu)越的跨越能力、先進(jìn)的施工方法以及良好的經(jīng)濟(jì)性近年來在我國得到了廣泛的應(yīng)用。在組合梁斜拉橋施工期，影響其安全性的因素較多，，工階段風(fēng)險事件的發(fā)生概率也較高。因此，亟需開展組合梁斜拉橋施工期安全分析方法與風(fēng)險管理技術(shù)的研究工作，以確保組合梁斜拉橋的施工質(zhì)量與工程安全。本文以福建省廈漳跨海大橋南汊組合梁斜拉橋為工程依托，采用專家調(diào)查法、層次分析法與模糊數(shù)學(xué)方法并結(jié)合橋梁事故案例對施工期施工技術(shù)點和整體施工階段進(jìn)行安全風(fēng)險評價，確定施工安全風(fēng)險權(quán)重，明確施工風(fēng)險大小，開展大型組合梁斜拉橋施工期安全評價技術(shù)與管理策略研究。 本文的研究工作如下： 1.通過對橋梁施工期安全評價技術(shù)與管理策略的重要性論述，并查閱國內(nèi)外相關(guān)文獻(xiàn)，明確國內(nèi)外相關(guān)發(fā)展情況，對橋梁施工期安全風(fēng)險評價與管理策略的研究現(xiàn)狀進(jìn)行了綜述； 2.基于收集的已發(fā)事故橋梁案例，對發(fā)生事故的橋梁類型以及事故發(fā)生的原因進(jìn)行了歸類分析，總結(jié)了橋梁施工安全事故的規(guī)律和特點，為組合梁斜拉橋施工期風(fēng)險源識別提供實際依據(jù)； 3.運用層次分析法和模糊數(shù)學(xué)方法對廈漳大橋南汊組合梁斜拉橋的基礎(chǔ)、主塔、斜拉索以及主梁的關(guān)鍵施工技術(shù)進(jìn)行了施工期安全評價，并結(jié)合實際事故案例中的風(fēng)險因素排序，分別獲得了各施工階段不同施工技術(shù)的風(fēng)險權(quán)重值和風(fēng)險嚴(yán)重度； 4.在上述工作的基礎(chǔ)上，對組合梁斜拉橋施工期的管理策略進(jìn)行研究，提出具有結(jié)合性、預(yù)知性、優(yōu)先性、科學(xué)性、可行性、銜接性、執(zhí)行性、公平性以及專業(yè)性的管理策略。
[Abstract]:With the development of transportation infrastructure, composite girder cable-stayed bridge has been widely used in China in recent years with its rapid construction speed, superior span capacity, advanced construction methods and good economy. In the construction period of composite girder cable-stayed bridge, there are many factors affecting its safety, and the probability of risk events in construction stage is also higher. Therefore, it is urgent to carry out research on safety analysis method and risk management technology of composite girder cable-stayed bridge during construction in order to ensure the construction quality and engineering safety of composite girder cable-stayed bridge. Based on the cable-stayed bridge with composite beam in the south branch of Xia-Zhang cross-sea bridge in Fujian Province, the method of expert investigation is adopted in this paper. AHP and fuzzy mathematics method combined with bridge accident cases are used to evaluate the construction technical point and the whole construction stage in order to determine the weight of the construction safety risk and make clear the construction risk. Research on safety evaluation technology and management strategy of large composite girder cable-stayed bridge during construction period. The research work of this paper is as follows: 1. Through discussing the importance of the safety evaluation technology and management strategy during the bridge construction period, consulting the relevant literature at home and abroad, defining the relevant development situation at home and abroad, this paper summarizes the research status quo of the safety risk assessment and management strategy during the bridge construction period. 2. Based on the collected cases of bridge accidents, the types of bridges and the causes of accidents are classified and analyzed, and the rules and characteristics of safety accidents in bridge construction are summarized. It provides practical basis for identification of risk source during construction of composite girder cable-stayed bridge. 3. By using the analytic hierarchy process (AHP) and fuzzy mathematics method, the foundation, main tower, stay cable and key construction technology of Xia-Zhang Bridge's south branch composite beam cable-stayed bridge are evaluated during the construction period, and combined with the risk factors in actual accident cases, the safety evaluation is carried out. The risk weight value and risk severity of different construction techniques in each construction stage are obtained respectively. 4. On the basis of the above work, the management strategy of composite girder cable-stayed bridge during construction period is studied, and a management strategy with combination, predictability, priority, science, feasibility, cohesion, execution, fairness and professionalism is put forward.
【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U445.1;U448.27

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