【摘要】：息烽至黔西高速公路是貴州省“678”高速公路網(wǎng)中“三橫”的重要組成部分,六廣河特大橋是息黔高速公路全線跨徑最大、施工技術(shù)要求高和施工難度最大的一座控制性橋梁,其施工過程中不確定因素多,施工風(fēng)險高,一旦發(fā)生事故,將造成不可挽回的損失,因此對六廣河特大橋施工過程中的風(fēng)險管理,確定施工風(fēng)險因素,并針對這些因素提出因?qū)Υ胧?對施工過程中可能發(fā)生的風(fēng)險提前應(yīng)對,顯得尤為重要。本文按照六廣河特大橋的施工工藝順序,利用專家調(diào)查法和現(xiàn)場調(diào)查法,提出各個施工工序的風(fēng)險因素,之后將這些風(fēng)險因素整合,最終確定六廣河特大橋的施工風(fēng)險因素。再利用模糊層次分析法確定六廣河特大橋施工過程中風(fēng)險因素的權(quán)重,模糊層次分析法的目標(biāo)層為六廣河特大橋施工風(fēng)險,中間層為樁基施工、承臺施工、塔柱施工、橫梁施工、鋼梁施工及斜拉索施工六個方面。確定風(fēng)險因素權(quán)重后,利用專家調(diào)查表法,確定指標(biāo)層風(fēng)險因素發(fā)生概率及損失量的權(quán)重,進而確定各工序的風(fēng)險度,建立風(fēng)險概率模型與風(fēng)險損失模型,根據(jù)風(fēng)險評價矩陣,計算出風(fēng)險概率和風(fēng)險損失的等級,確定六廣河特大橋施工過程的風(fēng)險等級。最后提出風(fēng)險因素的應(yīng)對措施,保證六廣河特大橋施工的順利進行。本文利用實際工程案例,將模糊層次分析法應(yīng)用于大跨徑斜拉橋施工的風(fēng)險管理過程中,提出了施工過程中的風(fēng)險因素及其應(yīng)對措施,具有一定的現(xiàn)實意義,可供同行參考。
[Abstract]:Xifeng to Qianxi Expressway is an important part of "three horizontal" in the "678" expressway network of Guizhou Province. Liuguang River Bridge is a controlled bridge with the largest span, high construction technical requirements and the most difficult construction. There are many uncertain factors and high construction risk in the construction process, once the accident occurs, it will cause irreparable losses. Therefore, the construction risk factors are determined for the risk management in the construction process of Liuguang River Bridge. In view of these factors, it is particularly important to put forward measures to deal with the risks that may occur in the construction process in advance. According to the construction technology sequence of Liuguanhe Bridge, this paper puts forward the risk factors of each construction process by using expert investigation method and field investigation method, and then integrates these risk factors to finally determine the construction risk factors of Liuguanhe Bridge. Then the weight of risk factors in the construction process of Liuguanhe Bridge is determined by fuzzy analytic hierarchy process. The target layer of fuzzy AHP is the construction risk of Liuguanhe Bridge, and the middle layer is pile foundation construction, cap construction and tower column construction. Cross beam construction, steel beam construction and cable-stayed cable construction six aspects. After determining the weight of risk factors, the risk factors occurrence probability and loss weight of index layer are determined by using expert investigation table method, and then the risk degree of each process is determined, and the risk probability model and risk loss model are established, according to the risk evaluation matrix, The risk probability and the grade of risk loss are calculated, and the risk grade of Liuguang River Bridge is determined. Finally, the countermeasures of risk factors are put forward to ensure the smooth construction of Liuguang River Bridge. In this paper, the fuzzy analytic hierarchy process (AHP) is applied to the risk management process of long-span cable-stayed bridge construction by using the actual engineering case, and the risk factors and their countermeasures in the construction process are put forward, which has certain practical significance and can be used as a reference for the colleagues.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：U445.1

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