本文選題：曲線橋梁　切入點(diǎn)：橫斷面　出處：《吉林大學(xué)》2017年碩士論文

【摘要】：作為一個(gè)典型的道路環(huán)境突變段,曲線橋梁的行車安全性不容樂觀。無論是道路線形還是道路景觀,曲線橋梁段與其他路段有著極大的差別。因此,對(duì)于存在曲線橋梁的路段來說,曲線橋梁的行車安全是整個(gè)路段的短板,提高曲線橋梁行車安全性就能極大提升整條道路的安全性,所以公路曲線橋梁行車安全性評(píng)價(jià)與保障技術(shù)至關(guān)重要。論文通過介紹了曲線橋梁線形、縱斷面、橫斷面、行車視距以及構(gòu)造對(duì)其行車安全性的影響,通過分析事故發(fā)生率的各項(xiàng)安全性影響因素,確定曲線橋梁的橫斷面布置形式和曲線段的加寬方式對(duì)行車安全性有重要影響,并作為研究方向。首先,分析傳統(tǒng)公路曲線橋梁橫斷面幾何布置形式和曲線段加寬方式,得出其中的安全隱患。其次,建立曲線橋梁安全系數(shù)回歸模型,并在提出橋梁有效寬度的基礎(chǔ)上,推薦了兩種曲線橋梁橫斷面布置形式;通過對(duì)曲線橋梁幾何參數(shù)對(duì)行車軌跡行為的作用機(jī)理和規(guī)律進(jìn)行研究,建立不同于傳統(tǒng)的基于運(yùn)行車速設(shè)計(jì)理論并充分考慮駕駛行為特征的不同圓曲線半徑的曲線橋梁曲線段加寬值計(jì)算和加寬方式,加寬值的計(jì)算采時(shí)采用內(nèi)外側(cè)同時(shí)加寬的方式,提出各等級(jí)公路小半徑曲線橋梁的加寬設(shè)計(jì)指南。最后,在研究速度離散性對(duì)行車安全影響的基礎(chǔ)上,對(duì)曲線橋梁爬坡車道的設(shè)置條件、設(shè)置方法和爬坡車道的標(biāo)志標(biāo)線設(shè)置進(jìn)行了研究;對(duì)車輛行駛軌跡橫向偏移量和車輛行駛速度數(shù)據(jù)統(tǒng)計(jì)觀測(cè),給出了行車道邊緣線、對(duì)向車道分隔線和振動(dòng)帶的尺寸。
[Abstract]:As a typical sudden change of road environment, the driving safety of curved bridges is not optimistic.No matter the road line or the road landscape, the curve bridge section and other sections of road have great difference.Therefore, for the section with curved bridge, the driving safety of curved bridge is the short plate of the whole section, and the safety of the whole road can be greatly improved by improving the driving safety of the curved bridge.So it is very important to evaluate and guarantee the safety of highway curve bridge.This paper introduces the influence of curve bridge alignment, longitudinal section, cross section, distance of sight and structure on its driving safety.Determining the cross section layout of curved bridge and widening mode of curve section have important influence on driving safety, and as the research direction.Firstly, the traditional highway curved bridge cross section geometry layout and curve section widening mode are analyzed, and the hidden safety problems are obtained.Secondly, the regression model of the safety factor of curved bridge is established, and on the basis of the effective width of the bridge, two types of cross-section layout of curved bridge are recommended.Through the study of the action mechanism and law of the geometric parameters of curved bridges on the driving trajectory behavior,Different from the traditional speed design theory and taking full account of driving behavior characteristics, the widening method of curve section of curved bridge is established, which is different from the traditional design theory of running speed and takes full account of driving behavior characteristics. The widening value of curve section is calculated by using the method of widening both inside and outside side at the same time.A design guide for widening of small radius curve bridges for each class of highway is presented.Finally, on the basis of studying the influence of speed dispersion on driving safety, the setting conditions, setting methods and marking setting of climbing lane of curved bridge are studied.Based on the statistical observation of the lateral deviation of the vehicle track and the speed of the vehicle, the dimensions of the lane edge line, the opposite lane separation line and the vibration band are given.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：U492.84;U447

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本文編號(hào)：1720767