高速公路互通立交线形设计关键技术参数选择

发布时间：2018-10-05 12:28

【摘要】：目前在高速公互通立交设计中一般套用规范条文规定,对项目的运行速度和实际地形情况综合考虑深度不够,在线形技术参数的选取上缺乏灵活性,造成部分互通立交工程占地规模过大和环境破坏等,极个别互通立交还成为了交通安全的重要隐患,影响高速公路整体服务水平,未能充分利用有限的建设资金和土地资源。为更合理的选用技术参数使立交设计新理念应用于工程实践,本文就线形设计中的关键技术参数进行分析和论证,并提出各主要技术指标的参考值。通过全国多地区的互通立交工程实例调研,整理主要技术参数的选用情况,分析了目前互通立交线形设计中主要存在的问题。分析国内互通立交资料的基础上,结合一些有代表意义的互通立交设计及运营情况,重点分析互通立交线形设计指标的影响因素,深入分析了互通立交线形指标与交通安全、占地规模的关系。通过对车辆在匝道和变速车道上的运行车速变化规律进行理论分析和计算,结合各地的设计案例经验,依据安全设计、环保设计原则,综合国内外的最新设计理念,研究互通设计中主要技术指标的选用原则及适用条件,并提出各主要技术指标的参考值。最后,论文从车辆实际运行速度出发,验证运行速度协调性。通过互通立交实例验证运行速度协调性、运行速度与设计速度协调性,分析线形指标选取是否适当,保障互通线形更加科学合理。
[Abstract]:At present, in the design of high speed public interchange, it is stipulated that the comprehensive consideration of the running speed of the project and the actual terrain condition is not enough, and the selection of the technical parameters of the line shape is not flexible enough. As a result, some interchange projects cover too large an area and destroy the environment, and a few interchanges have also become an important hidden danger of traffic safety, which affects the overall service level of expressway, and fails to make full use of limited construction funds and land resources. In order to select the technical parameters more reasonably to make the new concept of interchange design applied to engineering practice, this paper analyzes and proves the key technical parameters in the linear design, and puts forward the reference values of the main technical indexes. Through the investigation and investigation of the interchange project in many regions of the country, the selection of main technical parameters is sorted out, and the main problems in the design of interchange alignment at present are analyzed. Based on the analysis of the data of interchanges in China, combined with the design and operation of some representative interchanges, the factors affecting the design indexes of interchanges are analyzed, and the interchanges and traffic safety are deeply analyzed. The relationship between the size of an area. Through the theoretical analysis and calculation of the changing law of the vehicle speed on the ramp and the variable speed lane, combined with the design case experience of various places, according to the principles of safety design and environmental protection design, the latest design concepts at home and abroad are synthesized. The selection principle and applicable conditions of main technical indexes in interworking design are studied, and the reference values of each main technical index are put forward. Finally, the paper verifies the coordination of the running speed from the actual speed of the vehicle. The coordination of running speed, running speed and design speed is verified by an example of interworking interchange, and the selection of linear index is analyzed to ensure that the interworking alignment is more scientific and reasonable.
【学位授予单位】：北京工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U412.352.1

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