發(fā)布時(shí)間：2018-05-24 07:36

  本文選題：隧道 + 立交　； 參考：《重慶交通大學(xué)》2014年碩士論文

【摘要】：立交和隧道都是高速公路的重要組成結(jié)構(gòu)物。隨著高速公路的發(fā)展，受山區(qū)地形地貌限制和沿線社會(huì)經(jīng)濟(jì)發(fā)展需求影響，高速公路中隧道與立交的比例大幅度提升，已經(jīng)出現(xiàn)了隧道與互通立交之間間距較小的特殊路段，導(dǎo)致高速公路的擁堵和交通事故，嚴(yán)重影響了高速公路運(yùn)營(yíng)安全。為了提高高速公路的安全性和營(yíng)運(yùn)效益，本文對(duì)隧道與立交連接段的影響因素著手分析，利用數(shù)學(xué)方法從宏觀和微觀的交通理論研究高速公路隧道與立交的最小間距。 首先在分析相關(guān)標(biāo)準(zhǔn)規(guī)范規(guī)定和國(guó)內(nèi)外研究成果，在明確隧道與立交連接段構(gòu)造的基礎(chǔ)上，將隧道與立交之間的距離劃分為立交轉(zhuǎn)換區(qū)、隧道過渡區(qū)兩部分，確定隧道與立交連接段的影響因素。影響因素包括：交通需求、連接段的幾何布置及分、合流區(qū)的交通流特征、車輛行駛速度、駕駛舒適性要求、交通指示標(biāo)志的布置、隧道出入洞口的明暗適應(yīng)這六個(gè)方面。 將宏觀的交通理論和微觀的交通沖突技術(shù)相結(jié)合，研究了立交轉(zhuǎn)換區(qū)合理長(zhǎng)度。由于立交入口和出口的行車特征不同，利用車道變換理論對(duì)立交入口轉(zhuǎn)換區(qū)和立交出口轉(zhuǎn)換區(qū)分別進(jìn)行分析，并通過數(shù)學(xué)方法加以描述，建立了立交入口轉(zhuǎn)換區(qū)長(zhǎng)度計(jì)算模型和立交出口轉(zhuǎn)換區(qū)長(zhǎng)度計(jì)算模型�；诮煌_突技術(shù)，以仿真軟件VISSIM為建模工具，選取評(píng)價(jià)指標(biāo)并構(gòu)建立交轉(zhuǎn)換區(qū)的安全評(píng)價(jià)體系，確定了滿足目標(biāo)安全等級(jí)的立交轉(zhuǎn)換區(qū)最小長(zhǎng)度。通過比較長(zhǎng)度模型的計(jì)算值和安全評(píng)價(jià)模型的推薦值，進(jìn)而確定立交出入口轉(zhuǎn)換區(qū)長(zhǎng)度的最小值。 進(jìn)行了隧道進(jìn)出口運(yùn)行速度的試驗(yàn)研究，分析尋找出隧道出入口速度變化與車輛行駛位置的關(guān)系，確定了隧道出入口過渡段的最小長(zhǎng)度。最后結(jié)合立交轉(zhuǎn)換區(qū)的最小長(zhǎng)度，，確定了隧道與立交的最小間距值。 論文的研究為系統(tǒng)地解決小間距隧道與立交的設(shè)計(jì)問題提供了有力的理論指導(dǎo)與參考，并對(duì)現(xiàn)有規(guī)范有關(guān)隧道與立交間距的規(guī)定進(jìn)行技術(shù)更新提供了新方法、新思路，具有一定的現(xiàn)實(shí)意義。
[Abstract]:Interchange and tunnel are important structures of highway. With the development of expressway, influenced by the limitation of terrain and geomorphology in mountainous area and the demand of social and economic development along the highway, the proportion of tunnel and interchange in expressway has been greatly increased, and there has been a special section of highway with small spacing between tunnel and interchange. Leading to highway congestion and traffic accidents, seriously affected the safety of highway operation. In order to improve the safety and operation benefit of freeway, this paper analyzes the influence factors of the connecting section between tunnel and interchange, and studies the minimum distance between tunnel and interchange by mathematical method from macroscopic and microscopic traffic theory. First of all, based on the analysis of the relevant standards and regulations and the domestic and foreign research results, the distance between the tunnel and the interchange is divided into two parts: the transition zone and the transition zone of the tunnel, on the basis of defining the structure of the connecting section between the tunnel and the interchange. Determine the influence factors of the connecting section between tunnel and interchange. The influencing factors include: traffic demand, geometric arrangement and division of connecting section, traffic flow characteristics in confluence area, vehicle driving speed, driving comfort requirement, layout of traffic indication signs, light and dark adaptation of tunnel entrance and exit. Combining macro traffic theory with micro traffic conflict technology, the reasonable length of interchange transition area is studied. Because of the different driving characteristics of the entrance and exit of the interchange, the transition area of the entrance and exit of the interchange is analyzed by using the theory of lane change, and the mathematical method is used to describe it. The calculation model of the length of the transition zone at the entrance of the interchange and the length of the transition zone at the exit of the interchange are established. Based on the traffic conflict technology and the simulation software VISSIM as the modeling tool, this paper selects the evaluation index and constructs the security evaluation system of the interchange transition area, and determines the minimum length of the interchange transition area that meets the target security level. By comparing the calculated value of the length model with the recommended value of the safety evaluation model, the minimum length of the transition area of the interchange entrance and exit is determined. In this paper, the experimental study of tunnel inlet and exit speed is carried out, and the relationship between the change of tunnel inlet speed and the vehicle driving position is found out, and the minimum length of the tunnel entrance and exit transition section is determined. Finally, the minimum distance between the tunnel and the interchange is determined according to the minimum length of the transition zone. The research in this paper provides a powerful theoretical guidance and reference for solving the design problem of small spacing tunnels and interchanges, and provides a new method and new idea for the technical renewal of the existing regulations concerning the spacing between tunnels and interchanges. Has certain realistic significance.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U412.366

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本文編號(hào)：1928238