本文選題：戈壁荒漠區(qū)及山嶺區(qū)　切入點：平均縱坡　出處：《長安大學》2014年碩士論文　論文類型：學位論文

【摘要】：我國幅員遼闊，地勢總體為西高東低，呈三級階梯分布。東部地區(qū)地形平坦，主要以平原區(qū)和丘陵區(qū)為主；西部地區(qū)地形復雜多樣，受風力、雨水、氣溫等氣候條件及人工影響，形成多種地貌形態(tài)，有起伏的山嶺區(qū)、低緩的盆地區(qū)、農業(yè)綠洲區(qū)、廣闊的草原區(qū)、貧瘠的戈壁荒漠區(qū)和嚴寒的高原牧區(qū)等。不同的地貌形態(tài)給西部地區(qū)高速公路建設帶來不同的環(huán)境條件，公路的縱坡設計參數隨環(huán)境條件的變化應采用不同的指標值�，F行公路設計規(guī)范給出了各級公路在不同設計速度下的最大縱坡值、高原縱坡折減值，僅對二級及以下等級公路平均縱坡指標進行了說明，并且沒有與地形地貌結合，對高速公路設計缺乏指導意義。因此，西部地區(qū)不同地貌形態(tài)下高速公路平均縱坡的研究對西部地區(qū)高速公路建設具有較大的應用價值。 本文以新疆（哈密至伊寧）為研究對象，地貌形態(tài)主要是戈壁荒漠區(qū)及山嶺區(qū)，調查分析區(qū)域范圍的自然地理、氣候特征、人口經濟及交通特性等環(huán)境因素，并以烏奎高速公路及相關公路的交通量、交通組成、事故資料為基礎，結合未來車型發(fā)展趨勢，選擇具有代表性的東風EQ5208XXY2型廂式載貨車為試驗車型。對車輛進行動力性能與制動性能分析，確定試驗車型的相關技術參數�；诒疚难芯康牡匦涡螒B(tài)，主要從長大上坡路段通行能力及長大下坡路段交通安全性兩方面進行研究，通過VISSIM軟件對上坡路段通行能力進行交通仿真，對試驗車輛進行室外路段試驗分析下坡路段交通安全性，，采集大量數據資料，采用回歸分析法建立無輔助制動條件下貨車主制動器溫度隨坡度、坡長變化的預測模型。結合車輛在下坡路段交通安全性和上坡路段通行能力，綜合考慮，合理確定無輔助制動條件下西部戈壁荒漠區(qū)及山嶺區(qū)高速公路平均縱坡與坡長的限制指標值，并提出戈壁荒漠區(qū)及山嶺區(qū)高速公路平均縱坡設計標準的選用原則，對公路安全的處置措施也提出合理化建議。
[Abstract]:Our country has a vast territory, the terrain is generally high in the west and low in the east, with a three-tier ladder distribution. The eastern region is flat, mainly in plain areas and hilly areas; the western region is complex and diverse, subject to wind, Rain Water, Climate conditions such as temperature and artificial influence form various landforms, including undulating mountain areas, low and gentle basin areas, agricultural oasis areas, and vast grasslands, The barren Gobi desert area and the frigid plateau pastoral area, etc. Different landforms bring different environmental conditions to highway construction in the western region, The design parameters of longitudinal slope of highway should adopt different index values with the change of environmental conditions. The current highway design code gives the maximum longitudinal slope value of highway at different design speeds and the value of plateau slope break down. The average longitudinal slope index of the second grade and lower grade highway is only explained, and it is not combined with the topography and geomorphology, which is lack of guiding significance to the highway design. The study on the average longitudinal slope of expressway in different geomorphological forms in western China has great application value to highway construction in western region. In this paper, Xinjiang (Hami to Yining) is taken as the research object. The geomorphology is mainly Gobi desert area and mountain area. The environmental factors, such as natural geography, climatic characteristics, population, economy and traffic characteristics, are investigated and analyzed in this paper. And on the basis of the traffic volume, traffic composition, accident data of Wukui Expressway and related highways, and combined with the development trend of future models, The typical Dongfeng EQ5208XXY2 van is selected as the experimental vehicle. The dynamic and braking performance of the vehicle is analyzed, and the relevant technical parameters of the test vehicle are determined. Based on the terrain shape studied in this paper, In this paper, the traffic capacity of long uphill section and traffic safety of long downhill section are studied, and the traffic simulation of uphill section capacity is carried out by VISSIM software. The traffic safety of downhill section was analyzed by outdoor road test, and a large number of data were collected. The main brake temperature of freight car without auxiliary braking was established by regression analysis method, and the temperature of main brake of freight car with slope was established under the condition of no auxiliary braking. The prediction model of slope length variation. Combined with the traffic safety and the capacity of the uphill section of the vehicle in the downhill section, the comprehensive consideration, The limit index values of the average longitudinal slope and slope length of the expressway in the west Gobi desert region and the mountain area without auxiliary braking are reasonably determined, and the selection principles of the design standard for the average longitudinal slope of the highway in the Gobi desert area and the mountain area are put forward. The disposal measures of highway safety also put forward rationalization suggestion.
【學位授予單位】：長安大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U412.3

【參考文獻】

相關期刊論文 前10條

1 田莉;奚曉霞;;近50年西北地區(qū)風速的氣候變化特征[J];安徽農業(yè)科學;2011年32期

2 趙林;邵長橋;;基于VISSIM的高速公路基本路段實際通行能力仿真分析[J];道路交通與安全;2007年01期

3 張宇;淺談公路危險路段的界定標準[J];道路交通管理;2004年12期

4 周榮貴,徐建偉,吳萬陽;公路連續(xù)下坡路段的縱斷面控制指標研究[J];公路;2004年06期

5 莊凌云;;平均縱坡在山區(qū)高速公路安全性評價中的應用[J];公路交通科技(應用技術版);2011年08期

6 袁偉;付銳;郭應時;馮紅運;時間;;考慮坡長因素的縱坡坡度對交通事故的影響分析[J];公路交通科技;2008年05期

7 師恒周;;公路長下坡路段避險車道設置位置分析[J];中外公路;2013年03期

8 楊慧軍;齊琳;;長大縱坡段路面線形設計及安全性評價[J];交通標準化;2012年14期

9 孫大志,沈化榮,郭忠印,辛超,崔俊勝;道路安全評價──改善道路交通安全的有效途徑[J];山東交通科技;1999年03期

10 王苗定;;某高速公路長大縱坡路段事故分析及預防措施[J];山西建筑;2011年15期

本文編號：1642351