本文選題：雷電災害風險評估 + 鐵路綜合交通樞紐　； 參考：《蘭州大學》2013年碩士論文

【摘要】：鐵路綜合交通換乘樞紐具有建設(shè)規(guī)模大、人員密集和電磁敏感程度高等特點,防雷安全責任重大,但目前尚缺乏針對該對象的雷電災害風險評估方法。本文提出了一套鐵路綜合交通換乘樞紐的雷電災害風險評估方法,并在吉林省雷電災害及活動特征分析基礎(chǔ)上,以長春西客站綜合交通換乘中心為例進行了方法的應用。主要研究結(jié)果如下： (1)以層次分析法為主,結(jié)合加權(quán)綜合法提出了一套鐵路綜合交通換乘樞紐的雷電災害風險評估方法。該方法辨識了10個風險影響因子,即縣(市)雷災易損度、地形、土壤電阻率、雷電強度、雷電密度、雷電流繞擊率、區(qū)域人員雷擊易損度、建筑物經(jīng)濟雷擊易損度、建筑物防雷類別和建筑物電子信息系統(tǒng)雷電防護等級,并建立了各因子的賦值方法。在上述因子賦值中,特別給出了雷擊建筑物導致物理損害的概率PB、雷擊建筑物導致物內(nèi)部系統(tǒng)失效的概率Pc評估的子方法,以及區(qū)域閃電篩選方法。 (2)吉林省的雷電災害風險由強到低呈現(xiàn)出由中部向周邊遞減的結(jié)構(gòu),強風險區(qū)主要位于吉林省中部和南部的地級市轄區(qū),高風險區(qū)主要位于中部和南部經(jīng)濟發(fā)展水平相對較高的縣(市),中風險區(qū)和低風險區(qū)則主要集中于東部山區(qū)和西部平原地區(qū)。吉林省雷電密度呈中南部稍高,東西部偏低的特征,多年平均值為3.0次·km-2·a-1,雷電流幅值多為20～40kA。長春市雷電密度平均值為3.1次·km-2·a-1,略高于全省多年平均值。長春市雷災易損度值為0.682,處于雷電災害強風險區(qū)。 (3)長春西客站綜合交通換乘中心的雷電災害風險為低級別,其排序前三名風險因子分別為區(qū)域雷電密度,項目所在縣(市)雷災易損度和區(qū)域人員雷擊易損度。該中心的建筑物內(nèi)部人員生命損失風險、內(nèi)部經(jīng)濟損失風險在經(jīng)驗值范圍內(nèi),而-6.5m及-12m層集散廣場、-6.5m層公交停車場人員雷擊易損性高于其他區(qū)域,需對現(xiàn)有防雷裝置和措施進一步完善。結(jié)果表明,本文提出的評估方法是科學合理的、具有較強的可操作性,可用于鐵路綜合交通換乘樞紐的選址及防雷措施完善指導。
[Abstract]:The railway integrated traffic transfer hub has the characteristics of large scale construction, dense personnel and high electromagnetic sensitivity, and has a heavy responsibility for lightning protection, but there is still a lack of lightning disaster risk assessment method for this object at present. This paper puts forward a set of risk assessment method of lightning disaster in railway integrated traffic transfer hub. Based on the analysis of lightning disaster and activity characteristics of Jilin Province, the paper takes the integrated traffic transfer center of Changchun West passenger Station as an example to carry on the application of the method. The main results are as follows: (1) based on the analytic hierarchy process (AHP) and combined with the weighted synthesis method, a set of lightning disaster risk assessment method for railway integrated traffic transfer hub is proposed. The method identified 10 risk factors, namely, county (city) lightning vulnerability, topography, soil resistivity, lightning intensity, lightning density, lightning current wound impact rate, area personnel lightning vulnerability, building economic lightning vulnerability. The lightning protection class of buildings and the lightning protection grade of building electronic information system are established, and the evaluation method of each factor is established. In the above factor assignment, the probability of physical damage caused by lightning strikes on buildings is given, and the probability of failure of internal systems caused by lightning strikes is given. And regional lightning screening methods. (2) the lightning disaster risk in Jilin Province from strong to low presents a decreasing structure from the middle to the periphery, and the strong risk areas are mainly located in the prefecture-level municipal areas in the central and southern parts of Jilin Province. The high risk areas are mainly located in the counties (cities) with relatively high level of economic development in the central and southern regions, while the middle and low risk areas are mainly concentrated in the eastern mountainous areas and the western plain areas. The lightning density of Jilin Province is slightly higher in the central and southern part, and lower in the east and west. The annual average value is 3.0times km-2 a-1, and the lightning current amplitude is mostly 200.40kA. The average lightning density in Changchun is 3.1 times km-2 a-1, which is slightly higher than the annual average of the province. In Changchun City, the vulnerability of lightning disaster is 0.682, which is in the high risk area of lightning disaster. (3) the risk of lightning disaster is low in the integrated traffic transfer center of Changchun West passenger Station, and the first three risk factors are the regional lightning density. The county (city) where the project is vulnerable to lightning disaster and regional personnel lightning vulnerability. The risk of loss of life and the risk of economic loss are within the range of experience, and the lightning vulnerability of the staff in the bus parking lot of -6.5m and -12m storeys is higher than that in other areas. The existing lightning protection devices and measures need to be further improved. The results show that the evaluation method proposed in this paper is scientific and reasonable and has strong maneuverability. It can be used to guide the location selection of railway integrated traffic transfer hub and the lightning protection measures.
【學位授予單位】：蘭州大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：U298;P427.3

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本文編號：2100424