摘要
城市轨道交通车辆基地工程量和占地面积均较大。为了缩短跨坐式单轨车辆基地咽喉区长度,减小其用地面积,从跨坐式单轨道岔的结构特点和分类出发,重点研究关节形道岔的尽端式车辆基地。依照相关规范线路设计参数,类比平行错移线路反向曲线连接模型,分析车辆基地咽喉区反向曲线的线群特征,对影响咽喉区优化重要变量(如出入线位置、道岔组合方式、关键径路、接入不同出入线的线群间距)的作用机理进行论述。在以上研究的基础上,首次提出"关键径路"咽喉区设计变量和计算道岔数量配比的"径路增加法",并结合设计案例阐述了以线群作为模块的咽喉区设计。研究表明,采用该优化规律及线群模块,可将咽喉区长度从266. 01 m缩短至217. 38 m。
The quantities and floorarea of urban rail transit vehicle base are relatively large. In order to shorten the throat sectionlength and land floorarea of straddle type monorail vehicle base, the end-type vehicle base with joint turnouts is studied from the structural characteristics and classification of straddle-type monorail turnouts. According to the design parameters of relevant codes, the reverse curve connection model of parallel staggered lines is analogized to analyze the line group characteristics of the reverse curve of throatsection of vehicle base. The mechanism of the important variables affecting the optimization of throatsection, such as the position of entry and exit lines, the combination mode of turnouts, the key routes, and the distance between different groups of entry lines, is discussed. On the basis of the above research, this paper puts forward for the first time the design variables of “critical path”for throat section and the “routes increase method”for calculating thequantitative proportionof turnouts,and elaborates the throat floor area design with the line group as the module combining with the design case. The results show that the length of throat sectioncan be shortened from 266.01 m to 217.38 m by using this optimization rule and line group module.
作者
刘晓云
刘俊
周宇正
Liu Xiaoyun;Liu jun;Zhou yu zheng(China Railway Engineering Designand Consulting Groupco. ,Ltd. , Beijing 100055)
出处
《铁道勘察》
2019年第2期90-95,共6页
Railway Investigation and Surveying
关键词
跨坐式单轨
车辆基地
咽喉区
平面设计
优化分析
Straddle-type monorail
Vehicle base
Throat section
Plane design
Optimization analysis
