CAJ | 학술논문

城市空间结构演化与交通发展之间存在动态互馈关系，可达性是连接二者的关键纽带。基于潜能模型，在1 km ×1 km网格尺度上，计算了2000年和2010年北京市小汽车的通勤可达性，并利用敏感性分析的思路研究通勤可达性变化的驱动因素。结果表明，小汽车通勤可达性的时间变化体现为10年间大幅提高，增长54%；空间上由中心区向外围可达性递减的分布格局保持不变，但2010年的可达性沿环路及高速公路蔓延的现象更加明显，而且不同区域可达性变化的绝对值及变化率具有显著差异。城市空间结构变化对小汽车通勤可达性具有主要提升作用，但部分提升作用被路网运行速度的降低效果所抵消。促进交通基础设施建设与城市空间布局的协调，仍是未来研究的重要课题。
성시공간결구연화여교통발전지간존재동태호궤관계，가체성시련접이자적관건뉴대。기우잠능모형，재1 km ×1 km망격척도상，계산료2000년화2010년북경시소기차적통근가체성，병이용민감성분석적사로연구통근가체성변화적구동인소。결과표명，소기차통근가체성적시간변화체현위10년간대폭제고，증장54%；공간상유중심구향외위가체성체감적분포격국보지불변，단2010년적가체성연배로급고속공로만연적현상경가명현，이차불동구역가체성변화적절대치급변화솔구유현저차이。성시공간결구변화대소기차통근가체성구유주요제승작용，단부분제승작용피로망운행속도적강저효과소저소。촉진교통기출설시건설여성시공간포국적협조，잉시미래연구적중요과제。
There is dynamic correlation between urban spatial structure evolution and traffic development, and accessibility is their key link. This paper analyzes the temporal evolution from 2000 to 2010 and driving forces of commuting accessibility by car in Beijing by employing the potential model and sensitivity analysis at 1km × 1km scale. The results show that:in time commuting accessibility by car has been greatly improved by 54%; in space, the spatial distribution of commuting accessibility decreasing from center outward has little change; however, the spreading phenomenon along the ring roads and highways is more obvious in 2010. Moreover, the absolute and relative changes of commuting accessibility in different areas are significantly different. As a whole, changing urban spatial structure plays a positive role in improve commuting accessibility, while some positive effects has been offset by that of decreasing speed of road networks. Therefore, facilitating the coordination between transportation infrastructure and urban spatial structure is still an important topic for future research.