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畢業(yè)論文-車道被占用對城市道路通行能力的影響-文庫吧

2025-05-15 03:19 本頁面


【正文】 BQ Q v t? ? ? ?? ( )利用這個模型可以定性地分析出 交通事故發(fā)生至撤離期間 ,事故所處橫斷面實際通行能力的變化過程。 針對問題二:采集視頻 2中的相關(guān)數(shù)據(jù),利用問題一中建立的模型,觀察視頻 2 中的交通事故發(fā)生至撤離期間 ,事故所處橫斷面實際通行能力的變化過程,然后利用對比分析得方法說明同一橫斷面交通 事故所占車道不同對該橫斷面實際通行能力影響的差異。 針對問題三:參照藥物在體內(nèi)的分布與排除模型,利用微分方程的求解原理建立車輛排隊長度的指數(shù)模型 6280 .1 4 0 .8 3 0cuQBCt e LL ??? ? ?,分析了長度與時間、車流量,道路通行能力之間的關(guān)系。 針對問題四:利用第三問建立的模型,將相關(guān)數(shù)據(jù)代其中,即可算得從事故發(fā)生開始車輛排隊長度到達上游路口經(jīng)過的時間。 關(guān)鍵詞: 指數(shù)模型 實際通行能力 車輛排隊長度 MATLAB 軟件 興義民族師范學(xué)院本科畢業(yè)論文 II Abstract Lane occupied refers to in a traffic accident, the roadside parking ,roadway takingup factors such as construction ,lead to driveway or road crosssection capacity in unit time to reduce the phenomenon ,by the utilization of various kinds ,plex ,to correctly estimate the lanes occupied the influence degree of the urban road traffic presence of examining and approve construction highly channelizing scheme and design of the road ,roadside parking space and set the bus bay ,busstation ,and so on . In the view of the problem a: video in attachment 11 for data acquisition ,acquisition of data with Excel ,then carries on the quantitative analysis using MATLAB software logarithms series ,found the quantitative analysis of defects in here ,further model are as follows: 31 21 []) (scfQ VtBQ Q v t? ? ? ?? ( )、 This model can be used to qualitatively analysis of the traffic accident happened to evacuate , accident in the changing process of crosssection actual capacity. For problem 2: collect the relevant data from video 2,question 1is used to establish model ,observation during the video 2 to evacuate the accident ,the accident of crosssectional the changing process of the actual capacity ,and then using the method of parative analysis to illustrate the same crosssectional lane of traffic accident different influence on the transverse section actual capacity difference. For question 3:refer to the distribution of the drug in the body to eliminate model ,the use of differential equation solving principle to establish the index of vehicle queue length model 6280 .1 4 0 .8 3 0cuQBCt e LL ??? ? ? analyses the length and the time ,the number of cars ,the relationship between the traffic capacity. For question 4:the model was established based on the third question ,the related data generation which can calculate since the accident vehicle queue length as the time arrived at the upstream intersection. Keywords: Exponential model The actual capacity Vehicle queue length MATLAB software 興義民族師范學(xué)院本科畢業(yè)論文 1 第一章 緒論 研究的背景 本題為 2021 年 9 月份的全國大學(xué)生數(shù)學(xué)建模競賽本科組的 A 題,研究本題目對提高大學(xué)生運用數(shù)學(xué)解決實際問題能力的提高有著重大的意義。此外,該篇文章對現(xiàn)實中由交通事故引發(fā)的車輛變道行駛對道路實際通行能力的影響進行了有效的研究。 研究的目的及其現(xiàn)實意義 車道被占用是指因交通事故、路邊停車、占道施工等因素,導(dǎo)致車道或道路橫斷面通行能力在單位時間內(nèi)降低的現(xiàn)象。由于城市道路具有交通流密度大、連續(xù)性強等特點,一條車道被占用,也可能降低路段所有車道的通行能力,即使時間短,也可能引起車 輛排隊,出現(xiàn)交通阻塞。如處理不當(dāng),甚至出現(xiàn)區(qū)域性擁堵。 車道被占用的情況種類繁多、復(fù)雜,正確估算車道被占用對城市道路通行能力的影響程度,不僅可以確定城市道路的合理建設(shè)規(guī)模和合理建設(shè)模式,還為城市道路路網(wǎng)規(guī)劃、工程可行性研究、城市道路設(shè)計、建設(shè)后評估
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