高密度城市核心区地下环路功能及出入口设置研究

Study on Function and Gateway of Underground Ring Road in Central Urban District

摘要:

高密度城市核心区地下环路是服务车辆最后一公里到发的地下专用道，是解决城市核心区交通问题的重要设施，具有主线成环、车辆行驶速度较低、出入口密集等特点。目前地下环路出入口数量及最小间距等设计指标的取值标准尚不明确，缺少完善可靠的设计依据。基于现有工程案例的统计分析，总结归纳城市核心区地下环路的功能定位，为地下环路主线规划布局提供参考；采用数理统计方法，分析地下环路内、外出入口的数量、最小间距、位置布局等参数，详细探讨环路外出入口的布局特点以及与服务车位数的关系，进一步总结环路内出入口数量及布局与外出入口和地块之间的关系。结合相关规范要求，对城市核心区地下环路的出入口设计指标提出合理建议，为地下环路出入口设计提供参考。

Abstract:

The underground ring road in the central urban district is the last kilometer of special underground road served for the arrival and departure of vehicles, is the important facility to solve the traffic problems of CUD, and has the characteristics of loop main line, lower vehicle speed and dense gateways. At present, the value standard of design indexes such as the number and minimum distance of gateway for underground ring road cannot be clearly. There is no perfective and reliable design basis. Based on the statistical analysis of the existing engineering cases, the functional orientation of underground ring road in CUD is summarized and concluded so as to provide the reference for the main line planning and layout of underground ring road. The mathematical statistics method is used analyze some parameters such as the number, minimum spacing, location and layout of the internal and external gateways of underground ring roads. And the layout characteristics of the external gateway of the ring road and the relationship with the number of parking spaces are discussed in detail. The number of internal gateway, and the relationship of layout with the external gateway and lands are further summarized. Combined with the requirements of relevant specifications, the reasonable suggestions on the design index of the gateway of the underground ring road in CUD is put forward so as to provide reference for the design of the underground ring road gateways.