引言随着城市人口规模的不断扩张,城市用地不断向郊区扩展,城市的每一寸适建土地都变得愈发珍贵。为了追求更好的居住条件,人们往往以增加出行距离为代价。出行距离增加到一定程度,必然割裂与城市中心区的联系,增加出行成本和时间,降低居民的出行意愿。因此,人们转而关注城市建成区内的开发与再开发。建成区内的新建建设越来越少,而再开发建设则面临着成本高、安置工作复杂等困难。这就需要更广阔的眼界。在我国北方城市有较大河流穿 INTRODUCTION With the continuous expansion of urban population and the continuous expansion of urban land to the suburbs, every inch of urban land for construction has become more and more valuable. In order to pursue better living conditions, people tend to increase the travel distance at the expense of them. Travel distance increased to a certain extent, is bound to cut off the contact with the city center, increase travel costs and time, reduce the residents’ willingness to travel. Therefore, people turn to focus on the development and redevelopment within the built-up area of ​​the city. There are fewer and fewer new construction projects in the built-up areas, while the redevelopment and construction projects face the difficulties of high costs and complex resettlement work. This requires a broader perspective. In our northern cities have larger rivers to wear