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隨機攻擊下利用常規(guī)公交改善地鐵連通可靠性

發(fā)布時間:2018-09-13 06:52
【摘要】:近十年來,我國汽車保有量以前所未有的速度逐年增加,城市交通擁堵日益嚴重。面對有限的道路資源和日益惡化的空氣質(zhì)量,各大城市將解決方法對準了城市軌道交通建設(shè)。城市軌道交通具有運量高、時間可靠性高、運行安全性高、環(huán)境污染性低、能源與用地使用量少等特點。然而除投資大外,軌道交通具有空間局限性。在軌道交通網(wǎng)絡(luò)遭受隨機性攻擊或蓄意性攻擊時,部分線路及站點的可使用性能大大降低、甚至癱瘓,從而導(dǎo)致網(wǎng)絡(luò)的連通性降低;在此情況下,利用軌道交通出行的乘客面臨被及時疏散及改變出行線路等問題。本文以北京市地鐵線網(wǎng)受到隨機攻擊為背景,研究此種情況下利用常規(guī)公交對地鐵網(wǎng)絡(luò)進行整合,以達到改善地鐵網(wǎng)絡(luò)連通可靠性的目標。本文首先介紹北京市地鐵全局網(wǎng)絡(luò)和局部網(wǎng)絡(luò)的網(wǎng)絡(luò)特性,包括基本指標、特性指標、可靠性指標等,用以判斷線網(wǎng)的發(fā)展程度,并確定了線網(wǎng)的關(guān)鍵節(jié)點和關(guān)鍵邊;接下來,根據(jù)隨機性攻擊和蓄意性攻擊的發(fā)生頻率的差異,確定本文的研究背景為隨機性攻擊:設(shè)定隨機性攻擊的三種破壞程度并分析乘客轉(zhuǎn)移的趨勢;隨后統(tǒng)計研究區(qū)域的常規(guī)公交設(shè)置情況,并分析現(xiàn)存常規(guī)公交網(wǎng)絡(luò)的缺點;最后根據(jù)網(wǎng)絡(luò)的三種破壞程度討論了現(xiàn)存常規(guī)公交及整合后的常規(guī)公交對地鐵網(wǎng)絡(luò)遭受隨機性攻擊時連通可靠性的改善效果以及存在問題。本文的結(jié)論包括:北京地鐵網(wǎng)絡(luò)具有明顯的無標度和小世界特性,研究范圍內(nèi)的局部線網(wǎng)連通度、復(fù)雜度較低,強健性較高,確定關(guān)鍵節(jié)點為東單站點;地鐵網(wǎng)絡(luò)可根據(jù)節(jié)點、邊、車輛破壞程度的差異性劃分為三個等級;在隨機性攻擊下,常規(guī)公交對地鐵網(wǎng)絡(luò)的連通可靠性起到顯著的改善作用,而面對隨機性攻擊下地鐵轉(zhuǎn)移的激增客流,可以采用增加額外公交車隊的方法解決。
[Abstract]:In the past ten years, the number of cars in our country has been increasing year by year, and the traffic jams are becoming more and more serious. In the face of limited road resources and deteriorating air quality, major cities focus on the construction of urban rail transit. Urban rail transit has the characteristics of high capacity, high reliability of time, high safety of operation, low environmental pollution and less energy and land use. However, in addition to large investment, rail transit has space limitations. When the rail transit network is subjected to random attacks or deliberate attacks, the usable performance of some lines and stations is greatly reduced or even paralyzed, resulting in reduced network connectivity; in this case, Passengers who make use of rail transit are faced with problems such as timely evacuation and change of route. Based on the random attack on the subway network in Beijing, this paper studies the integration of the subway network by conventional public transport in order to improve the reliability of the subway network. This paper first introduces the network characteristics of Beijing metro global network and local network, including the basic index, characteristic index, reliability index and so on, to judge the development degree of the network, and to determine the key nodes and critical edges of the network. According to the difference of frequency of random attack and intentional attack, the research background of this paper is random attack: setting three kinds of damage degree of random attack and analyzing the trend of passenger transfer; Secondly, the paper makes a statistical study on the situation of bus routine setting in the region, and analyzes the shortcomings of the existing bus routine network. Finally, according to the three kinds of damage degree of the network, the paper discusses the improvement effect and the existing problems of the connectivity reliability of the existing conventional public transport and the integrated conventional public transport to the subway network under random attack. The conclusions of this paper are as follows: the Beijing subway network has obvious scale-free and small-world characteristics, the local network connectivity in the scope of the study is low, the complexity is low, the robustness is high, the key nodes are determined as Dongdan station, and the subway network can be based on the nodes. The difference of the degree of vehicle damage can be divided into three levels: under random attack, conventional public transport plays a significant role in improving the reliability of subway network connectivity, but in the face of random attack, the subway transfer surge passenger flow, It can be solved by adding additional bus teams.
【學(xué)位授予單位】:大連理工大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2015
【分類號】:U12

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相關(guān)期刊論文 前2條

1 胡一z,

本文編號:2240404


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