沙子哨互通立交匝道工程的安全風險研究
發(fā)布時間：2018-12-10 13:26
【摘要】：經(jīng)濟的建設發(fā)展離不開便捷的交通,尤其是近些年,交通網(wǎng)絡為整個社會的生產(chǎn)、流通和消費提供了有力的保障。高速公路作為陸地快速交通,是整個交通網(wǎng)絡的重要組成部分。高速公路網(wǎng)絡遍及大江南北,會遇到各種各樣的情況,一些項目地形地勢復雜,尤其是山區(qū)及丘陵地區(qū),施工難度大大增加,致使施工中的安全風險增大。針對這一現(xiàn)狀,本文以沙子哨互通D匝道工程為研究對象,本項目工程復雜,難度大,一旦出現(xiàn)安全風險事故,會造成嚴重的經(jīng)濟損失、社會不良影響,結合我國安全風險研究現(xiàn)狀,對關鍵施工階段進行了安全風險評估研究,為安全施工做好安全儲備、奠定技術基礎。論文首先系統(tǒng)的介紹安全風險評估的概念及理論框架,分析歸納不同的施工方案的安全風險發(fā)生的可能性、概率以及應對措施。然后結合沙子哨互通區(qū)現(xiàn)場實際情況,D匝道工程可以采用拆除惠興高速K55+300處右側既有特防高邊坡方案(拆除重建高邊坡方案)和采用小半徑彎橋與加寬惠興高速既有打告河橋結合方案(拼寬高橋+小半徑高橋方案);接著論文對高邊坡拆重建方案進行了總體風險評估及專項風險評估,確定總體風險等級為III級,屬“高度風險”;對拼寬高橋+小半徑高橋方案安全風險評估選用專家調查法進行研究,本方案存在“高度風險”(III級)風險源5個,“中度風險”(II級)風險源8個,“低度風險”(I級)風險源8個。最后根據(jù)兩種方案及可能出現(xiàn)的不同風險事件,分別基于安全風險評估確定的風險等級,針對可能出現(xiàn)的風險事件提出相應的控制措施,特別是針對高度風險所提出的控制措施,降低了安全事故發(fā)生概率。綜合“拆除高邊坡方案”和“拼寬高橋+小半徑高橋方案”風險等級以及現(xiàn)場實際地形和既有惠興高速公路的保暢要求,一致認為“拼寬高橋+小半徑高橋方案”為首選方案。本文的研究為山區(qū)新建高速公路與既有高速公路拼接施工安全評估提供了借鑒,對類似工程中應用安全風險評估具有一定的參考價值。
[Abstract]:The construction and development of economy can not be separated from convenient transportation, especially in recent years, the transportation network provides a powerful guarantee for the production, circulation and consumption of the whole society. Expressway is an important part of the whole transportation network as land express traffic. Expressway network is all over the north and south of the river and will encounter various situations. Some projects have complicated topography especially in mountainous and hilly areas and the construction difficulty is greatly increased resulting in the increase of safety risks in construction. In view of this situation, this article takes the sand whistle interworking D ramp project as the research object, this project is complex, the difficulty is big, once the safety risk accident appears, will cause the serious economic loss, the society bad influence, According to the present situation of safety risk research in China, the safety risk assessment is carried out in the key construction stage, which lays a technical foundation for the safety reserve of safety construction. Firstly, the paper systematically introduces the concept and theoretical framework of safety risk assessment, and analyzes the possibility, probability and countermeasures of safety risk of different construction schemes. And then combined with the actual situation in the site of the sand sentry interchange area, The D ramp project can be used to demolish the high side slope of the right side at K55300 of the Huexing Expressway (demolition and reconstruction of the high slope) and the combination of the small radius curved bridge and the widening of the Huixing expressway to hit the river bridge. Small radius tall bridge scheme); Then the paper carries on the overall risk assessment and the special risk assessment to the high slope demolition and reconstruction plan, determines the overall risk grade to be the III class, belongs to the "high risk"; An expert investigation method was used to study the safety risk assessment of small radius tall bridge with wide span bridge. There are 5 "high risk" (III) risk sources and 8 "medium risk" (II) risk sources in this scheme. "low risk" (class I) risk source 8. Finally, according to the two schemes and the different risk events that may occur, and based on the risk level determined by the security risk assessment, the corresponding control measures are put forward for the possible risk events. Especially, the control measures for high risk reduce the probability of safety accident. By synthesizing the risk grade of "demolishing high slope scheme" and "small radius high bridge scheme", as well as the actual terrain on the spot and the requirements of the existing Huixing Expressway, it is agreed that the "small radius high bridge project" is the first choice. The research in this paper provides a reference for the safety assessment of the construction of the new expressway and the existing expressway in mountain area, and has certain reference value for the application of the safety risk assessment in the similar projects.
【學位授予單位】：蘭州交通大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：U445.1;U415.12
本文編號：2370649
[Abstract]:The construction and development of economy can not be separated from convenient transportation, especially in recent years, the transportation network provides a powerful guarantee for the production, circulation and consumption of the whole society. Expressway is an important part of the whole transportation network as land express traffic. Expressway network is all over the north and south of the river and will encounter various situations. Some projects have complicated topography especially in mountainous and hilly areas and the construction difficulty is greatly increased resulting in the increase of safety risks in construction. In view of this situation, this article takes the sand whistle interworking D ramp project as the research object, this project is complex, the difficulty is big, once the safety risk accident appears, will cause the serious economic loss, the society bad influence, According to the present situation of safety risk research in China, the safety risk assessment is carried out in the key construction stage, which lays a technical foundation for the safety reserve of safety construction. Firstly, the paper systematically introduces the concept and theoretical framework of safety risk assessment, and analyzes the possibility, probability and countermeasures of safety risk of different construction schemes. And then combined with the actual situation in the site of the sand sentry interchange area, The D ramp project can be used to demolish the high side slope of the right side at K55300 of the Huexing Expressway (demolition and reconstruction of the high slope) and the combination of the small radius curved bridge and the widening of the Huixing expressway to hit the river bridge. Small radius tall bridge scheme); Then the paper carries on the overall risk assessment and the special risk assessment to the high slope demolition and reconstruction plan, determines the overall risk grade to be the III class, belongs to the "high risk"; An expert investigation method was used to study the safety risk assessment of small radius tall bridge with wide span bridge. There are 5 "high risk" (III) risk sources and 8 "medium risk" (II) risk sources in this scheme. "low risk" (class I) risk source 8. Finally, according to the two schemes and the different risk events that may occur, and based on the risk level determined by the security risk assessment, the corresponding control measures are put forward for the possible risk events. Especially, the control measures for high risk reduce the probability of safety accident. By synthesizing the risk grade of "demolishing high slope scheme" and "small radius high bridge scheme", as well as the actual terrain on the spot and the requirements of the existing Huixing Expressway, it is agreed that the "small radius high bridge project" is the first choice. The research in this paper provides a reference for the safety assessment of the construction of the new expressway and the existing expressway in mountain area, and has certain reference value for the application of the safety risk assessment in the similar projects.
【學位授予單位】：蘭州交通大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：U445.1;U415.12
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