基于欠發(fā)達地區(qū)干線公路快速化的靈活性設計策略研究
發(fā)布時間：2018-08-21 20:50
【摘要】：改革開放以來，我國公路交通建設事業(yè)得以長足發(fā)展，但是我國欠發(fā)達地區(qū)公路建設資金不足、地形地質條件復雜、工程艱巨、單位工程建設費用極高,干線公路網(wǎng)規(guī)模小、技術等級低，，依然是區(qū)域經(jīng)濟快速發(fā)展的主要瓶頸。根據(jù)我國“十二五”期間社會經(jīng)濟發(fā)展戰(zhàn)略轉移，以及東西部均衡發(fā)展的政策導向，我國中西部欠發(fā)達地區(qū)干線公路快速化建設的技術改造已成為我國交通主管部門當前和未來一個時期所面臨的主要任務。 公路線形靈活性設計方法是依據(jù)現(xiàn)有的法規(guī)、標準、規(guī)范,在不降低安全性的前提下,通過合理選擇標準和靈活運用設計指標,尋求達到更符合公路沿線可持續(xù)發(fā)展的需要和利益的一種設計方法。 本文首先分析了社會經(jīng)濟條件、公路功能、自然地理環(huán)境、設計速度、交通流特征等因素對欠發(fā)達地區(qū)的干線公路快速化改造設計靈活性的影響。提出了欠發(fā)達地區(qū)干線公路快速化改造的靈活性設計原則，研究并提出了設計區(qū)間和線形單元組的劃分原則和方法。根據(jù)平、縱、橫線形設計背景和靈活性設計的取值范圍，分析了線形靈活性設計的可能性，為了提高線形設計的靈活性，提出了以50km/h、70km/h、90km/h為設計速度的平、縱線形指標。 最后從固有安全性和自我解釋性兩個方面分析了干線公路安全性，分析了對撞事故、路側事故和交叉口事故類型，提出了相對應的安全措施。
[Abstract]:Since the reform and opening up, the cause of highway traffic construction in China has been greatly developed. However, in underdeveloped areas, the funds for highway construction are insufficient, the terrain and geological conditions are complex, the project is arduous, the cost of unit project construction is extremely high, and the scale of trunk highway network is small. The low level of technology is still the main bottleneck of the rapid development of regional economy. According to the strategic transfer of social and economic development during the 12th Five-Year Plan period and the policy direction of balanced development between the east and the west, The technical transformation of trunk highway rapid construction in the underdeveloped areas of central and western China has become the main task that the transportation authorities in our country are facing at present and in the future. The flexible design method of highway alignment is based on the existing laws, standards, norms, without reducing the safety of the premise, through the rational selection of standards and flexible use of design indicators, A design method that seeks to meet the needs and interests of sustainable development along the highway. This paper first analyzes the influence of social and economic conditions, highway function, natural geographical environment, design speed and traffic flow characteristics on the design flexibility of trunk highway rapid transformation in underdeveloped areas. In this paper, the flexible design principles for the rapid reconstruction of trunk roads in underdeveloped areas are put forward, and the dividing principles and methods of design interval and linear unit group are studied and put forward. According to the background of horizontal, vertical and transverse design and the value range of flexible design, the possibility of linear flexibility design is analyzed. In order to improve the flexibility of linear design, a design speed of 50km / s 70 km / h and 90 km / h is proposed. Finally, the safety of trunk highway is analyzed from the aspects of inherent safety and self-explanation, and the types of collision accident, side accident and intersection accident are analyzed, and the corresponding safety measures are put forward.
【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
本文編號：2196314
[Abstract]:Since the reform and opening up, the cause of highway traffic construction in China has been greatly developed. However, in underdeveloped areas, the funds for highway construction are insufficient, the terrain and geological conditions are complex, the project is arduous, the cost of unit project construction is extremely high, and the scale of trunk highway network is small. The low level of technology is still the main bottleneck of the rapid development of regional economy. According to the strategic transfer of social and economic development during the 12th Five-Year Plan period and the policy direction of balanced development between the east and the west, The technical transformation of trunk highway rapid construction in the underdeveloped areas of central and western China has become the main task that the transportation authorities in our country are facing at present and in the future. The flexible design method of highway alignment is based on the existing laws, standards, norms, without reducing the safety of the premise, through the rational selection of standards and flexible use of design indicators, A design method that seeks to meet the needs and interests of sustainable development along the highway. This paper first analyzes the influence of social and economic conditions, highway function, natural geographical environment, design speed and traffic flow characteristics on the design flexibility of trunk highway rapid transformation in underdeveloped areas. In this paper, the flexible design principles for the rapid reconstruction of trunk roads in underdeveloped areas are put forward, and the dividing principles and methods of design interval and linear unit group are studied and put forward. According to the background of horizontal, vertical and transverse design and the value range of flexible design, the possibility of linear flexibility design is analyzed. In order to improve the flexibility of linear design, a design speed of 50km / s 70 km / h and 90 km / h is proposed. Finally, the safety of trunk highway is analyzed from the aspects of inherent safety and self-explanation, and the types of collision accident, side accident and intersection accident are analyzed, and the corresponding safety measures are put forward.
【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
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