基于分形理论的昆山市城市形态研究

发布时间：2018-10-30 09:04

【摘要】：昆山作为典型的苏南地区县级城市,是一种较为有特色的、值得深入研究的城市形态类型。基于分形理论研究城市形态是近些年来发展起来的一种方法,依然在不断地探索过程中,在城市形态研究中引入分形理论将提升城市规划研究的定量化、理性化水平,为城市科学规划建设提供一定的理论参考。本文尝试从多学科进行系统性研究,通过对昆山城市形态的分形研究,探讨其城市形态演化规律与特征,以期为昆山城市规划与建设提供可参考策略。首先,梳理了城市形态的内涵,以时空的视角分析了城市形态要素及其内在联系,并从水平方向与竖直方向相结合分析了其对城市形态作用机理;其次,在对分形理论研究基础上,探讨了分维变化对城市形态的意义与影响,并重点梳理了分形理论在城市形态研究中的可行性与解析思路,选取了针对昆山城市形态分形特点的分形计量方法;再次,在分析昆山城市发展现状与形态演化阶段的基础上,构建了昆山城市形态分形模型,对昆山市主城区进行了分维测算;并将结果与昆山市城市形态历史发展演化过程相结合,综合分析了昆山城市用地布局形态的分形特征。最后,根据昆山市城市形态演化规律与分形特征,提出了昆山市在城市建设与发展、土地规划与布局等方面的重点与对策。研究表明:昆山市中心城区建设用地的边界维数和网格维数都呈现出了增长趋势,其边界维数变化为1.32—1.37—1.49—1.56,网格维数变化为1.42—1.53—1.59—1.61,两者变化速度稍有不同,但均逐渐向1.7靠拢,城市形态呈现出建设用地逐渐有序化,功能分区更加明确,不同用地内部联系增多且有机的演化趋势,但受土地资源严重制约,需进一步实现用地功能的调整、优化与提升。同时也表明,城市形态演化与其分形分维变化有着较强的相关性,应用分形理论研究城市形态可为城市规划与发展对策提供科学依据。
[Abstract]:As a typical county-level city in southern Jiangsu, Kunshan is a characteristic and worthy of further study. The study of urban form based on fractal theory is a method developed in recent years, and it is still in the process of continuous exploration. The introduction of fractal theory into the study of urban form will enhance the quantitative and rational level of urban planning research. To provide a certain theoretical reference for urban scientific planning and construction. This paper attempts to systematically study the urban morphology of Kunshan from a multi-disciplinary perspective, and through the fractal study of urban morphology in Kunshan, discusses the evolution law and characteristics of urban morphology in order to provide a reference strategy for urban planning and construction in Kunshan. Firstly, it combs the connotation of urban form, analyzes the elements of urban form and its internal relations from the perspective of time and space, and analyzes the mechanism of its action on urban form from the combination of horizontal direction and vertical direction. Secondly, on the basis of the study of fractal theory, the significance and influence of fractal dimension change on urban morphology are discussed, and the feasibility and analytical thinking of fractal theory in urban morphology research are discussed. According to the fractal characteristics of urban morphology in Kunshan, the fractal measurement method is selected. Thirdly, on the basis of analyzing the present situation and evolution stage of urban development in Kunshan, the fractal model of urban morphology in Kunshan is constructed, and the fractal dimension of the main urban area of Kunshan is calculated. Combining the results with the historical development and evolution of urban morphology in Kunshan, the fractal characteristics of urban land use layout in Kunshan are comprehensively analyzed. Finally, according to the evolution law and fractal characteristics of urban morphology in Kunshan City, the emphases and countermeasures of urban construction and development, land planning and layout in Kunshan City are put forward. The results show that the boundary dimension and grid dimension of the construction land in the central urban area of Kunshan City show an increasing trend, and the boundary dimension varies from 1.32-1.37-1.49-1.56. The grid dimension varied from 1.42-1.53-1.59-1.61.The speed of change was slightly different, but both of them gradually converged to 1.7. The urban morphology showed that the construction land was gradually ordered, and the functional zoning was more clear. The internal connections of different land use are increasing and the evolution trend is organic, but due to the serious restriction of land resources, it is necessary to further realize the adjustment, optimization and promotion of land use function. At the same time, it is shown that the evolution of urban form has a strong correlation with its fractal dimension change, and the application of fractal theory to study urban form can provide scientific basis for urban planning and development countermeasures.
【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TU984.1

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