【摘要】：為定量分析雙車(chē)道山區(qū)公路小半徑反向連續(xù)彎道危險(xiǎn)區(qū)域,以福州市森林公園至鼓嶺道路的一個(gè)反向連續(xù)彎道為研究對(duì)象,采用路側(cè)激光交通調(diào)查儀采集以小型車(chē)為主的交通流參數(shù),并用攝像法和人工記錄法獲取小型車(chē)輛左前輪的行駛軌跡偏移量值;根據(jù)實(shí)測(cè)數(shù)據(jù)和斷面位置的標(biāo)定值,建立行駛軌跡偏移量、斷面位置和行駛速度的三維關(guān)系模型;根據(jù)關(guān)系模型計(jì)算出不同速度下危險(xiǎn)區(qū)域的長(zhǎng)度和面積。結(jié)果表明:當(dāng)車(chē)輛速度大于臨界值時(shí),危險(xiǎn)區(qū)域的長(zhǎng)度、面積與速度間存在二次多項(xiàng)式關(guān)系,隨著車(chē)輛速度的增長(zhǎng),危險(xiǎn)區(qū)域的范圍不斷擴(kuò)大,危險(xiǎn)等級(jí)不斷上升。根據(jù)危險(xiǎn)區(qū)域的變化情況,建議該路段的限速值為20~27 km/h。
[Abstract]:In order to quantitatively analyze the dangerous area of small radius reverse continuous bend of two-lane mountain highway, a reverse continuous bend of Fuzhou Forest Park to Guling Road is taken as the research object. The road side laser traffic survey instrument is used to collect the traffic flow parameters dominated by small vehicles, and the driving trajectory offset of the left front wheel of small vehicles is obtained by camera method and manual recording method. According to the measured data and the calibration value of the section position, the three-dimensional relationship model of the driving trajectory offset, the section position and the driving speed is established, and the length and area of the dangerous area at different speeds are calculated according to the relational model. The results show that when the vehicle speed is greater than the critical value, there is a quadratic multinomial relationship between the length, area and speed of the dangerous area. With the increase of the vehicle speed, the range of the dangerous area continues to expand, and the risk grade continues to rise. According to the change of dangerous area, it is recommended that the speed limit of this section be 20 鈮，

本文編號(hào)：2483796