本文選題：運(yùn)行速度 + 行車(chē)視距�。� 參考：《長(zhǎng)安大學(xué)》2015年碩士論文

【摘要】：近年來(lái),我國(guó)高速公路的交通事故發(fā)生率一直居高不下,其中山區(qū)高速公路的地理?xiàng)l件和環(huán)境特征等較為特殊,限制了路線設(shè)計(jì)指標(biāo)的選取,導(dǎo)致了小半徑路段、橋隧路段、高填深挖路段和長(zhǎng)大縱坡路段的比例較高,給道路的交通安全帶來(lái)了隱患。視覺(jué)系統(tǒng)是駕駛員行車(chē)過(guò)程中最主要的信息來(lái)源,視距是否滿足直接關(guān)系到道路的行車(chē)安全�，F(xiàn)有規(guī)范中的行車(chē)視距主要是從設(shè)計(jì)速度的角度分別考慮了平曲線和豎曲線的影響,道路環(huán)境較為復(fù)雜時(shí)很難發(fā)現(xiàn)以下問(wèn)題:①實(shí)際運(yùn)行速度下的行車(chē)視距值可能大于設(shè)計(jì)速度下計(jì)算的行車(chē)視距值;②行車(chē)視距值與實(shí)際三維空間視距值可能相差較大。本論文以普宣高速公路初步設(shè)計(jì)階段的設(shè)計(jì)資料為依據(jù),根據(jù)視距規(guī)定的相關(guān)要求,比選了隧道路段運(yùn)行速度預(yù)測(cè)模型,利用計(jì)算機(jī)軟件的二次開(kāi)發(fā)實(shí)現(xiàn)了普宣高速公路運(yùn)行速度的程序化測(cè)算;采用運(yùn)行速度對(duì)普宣高速全程的行車(chē)視距進(jìn)行了檢查,發(fā)現(xiàn)了可能存在的視距隱患路段;在《規(guī)范》要求的基礎(chǔ)上實(shí)現(xiàn)了設(shè)計(jì)速度和運(yùn)行速度下典型視距不良路段的三維視距檢查及相應(yīng)路段的駕駛員空間視野渲染;為更加形象生動(dòng)地全面展示普宣高速公路真實(shí)視距情況,利用虛擬現(xiàn)實(shí)技術(shù)檢查了隧道路段的視距;參照《規(guī)范》(送審稿)要求,分別建立了初步設(shè)計(jì)階段、施工圖階段、交工階段和運(yùn)營(yíng)階段的視距評(píng)價(jià)內(nèi)容及程序;對(duì)視距不良路段進(jìn)行分類(lèi),提出了切實(shí)可行的視距保障措施,完善了我國(guó)的視距安全保障技術(shù)。
[Abstract]:In recent years, the traffic accident rate of expressway in our country has been high all the time. The geographical conditions and environmental characteristics of mountain expressway are very special, which restrict the selection of route design index, and lead to small radius section, bridge and tunnel section, etc.The proportion of high filling and deep digging section and long longitudinal slope section is high, which brings hidden trouble to road traffic safety.Visual system is the most important information source in driver's driving process. Whether the visual distance is satisfied or not is directly related to the driving safety of the road.The distance of sight in the current specification mainly considers the influence of plane curve and vertical curve from the angle of design speed.When the road environment is more complicated, it is difficult to find the following problem: 1. The driving sight distance under the actual running speed may be larger than that calculated under the design speed. The difference between the driving visual field value and the actual three dimensional visual field value may be quite large.Based on the design data of the preliminary design stage of Puxuan Expressway, according to the requirements of the sight distance, this paper compares and selects the forecast model of the running speed of the tunnel section.By using the secondary development of computer software, the programmed calculation of the running speed of Puxuan Expressway is realized, and the running speed is used to check the distance of sight in the whole journey of Puxuan Expressway, and the hidden hidden road section of the range of sight range is found.On the basis of the requirements of the specification, the 3D visual range inspection and the driver's space visual field rendering of the typical bad line-of-sight section under the design speed and the running speed are realized.In order to display the real visual distance of Puxuan Expressway more vividly and vividly, the visual distance of tunnel section was checked by using virtual reality technology, and the preliminary design stage and construction drawing stage were set up according to the requirements of "Standard" (draft submission).The content and procedure of the visual distance evaluation in the transition stage and the operation stage, the classification of the unfavorable section of the visual distance, the practical measures of the distance of sight safeguard are put forward, and the technology of the safety of the sight distance in our country is improved.
【學(xué)位授予單位】：長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：U492.8

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本文編號(hào)：1759468