青岛主城区等时交通圈的构建及空间格局研究

Research on the construction and spatial pattern of the isochronous transportation circle in the main urban area of Qingdao

以青岛市主城区交通圈为对象,分析青岛主城区交通圈层,弥补青岛市交通圈空间格局研究的缺失。依据地价均衡理论识别青岛主城区;采用核密度分析法和中心服务区算法,辅以源点终点(origin-destination, OD)矩阵分析法、成本距离分析法,生成青岛主城区等时交通圈;将青岛主城区交通圈分为核心区、过渡区与边缘区,并对青岛主城区空间范围、圈层形态等空间格局特征进行分析、评价;根据分析结果提出交通规划的具体建议。研究结果表明:青岛主城区内基于职能的平均时间成本为0.58 h,不同区域的时间成本差异明显,其中核心区有较高的路网密度,呈南北狭长分布;过渡区在核心区周围,道路里程较短,路网密度最低,空间分布格局不规则;边缘区时间成本最高,但路网密度比过渡区高,空间形态呈组团式分布。

The research took the traffic circle of the main urban area of Qingdao as the object,analyzed the traffic circle of the main urban area of Qingdao,and made up for the lack of relevant research.The main urban area of Qingdao was identified according to the land price equilibrium theory.Using kernel density analysis and central service area algorithm,supplemented by OD matrix analysis and cost distance analysis,the isochronous traffic circle of Qingdao main city was generated.The traffic circle of Qingdao main urban area was divided into core area transition area and edge area,and its spatial pattern characteristics such as space range and circle form were analyzed and evaluated.According to the analysis results,some concrete suggestions on traffic planning were put forward.The results showed that the average time cost based on function is O.58 h in the main urban area of Qingdao,and the difference of time cost in different regions was obvious,among which the core area had a high road network density,and the distribution was narrow and long.The transition area was around the core area,the road mileage was short,the network density was the lowest,and the spatial distribution pattern was irregular.The time cost in the edge zone was the highest,but the density of the road network was higher than that in the transition zone,and the spatial form was distributed in a group pattern.