目前比较普遍地认为,我国大城市如果采取以旧城行政商业集中地为中心,沿着棋盘或环形放射道路,由内向外呈同心圆发展的单心封闭式布局结构,将使工厂与住宅之间“包围与反包围”的矛盾更为尖锐,城市环境质量更为下降,并将更多的交通引向城市中心(图1、2)。如今人们纷纷探求各种多中心开敞式城市布局结构以适应城市功能愈益复杂的需要, At present, it is generally believed that if China’s big cities adopt a single-core closed layout structure that centers on the administrative business concentration of the old city, along the chessboard or circular radial road, and develops concentrically from inside to outside, it will make factories and houses The contradiction between “surrounding and anti-enveloping” is more acute, the quality of the urban environment is declining, and more traffic is being directed to the center of the city (Figures 1 and 2). Nowadays, people are searching for a variety of multi-center open cities to meet the increasingly complex needs of urban functions.