Intensification Design Strategy Research Of City's Underground Space

Through the systematic study on urban underground space from the theoretical perspective of intensive design, the paper tends to explore the internal features, rules of development and devising strategies of intensive design in urban underground space evolution process. By constructing a theoretical system as well as a research platform taking on legible logic outline and considerable realistic pertinence, a solid foundation would be established for further research on subsequent problems.Starting with the development patterns for contemporary urban space, the author has analyzed its background, international environment and intending evolution trends so as to objectively demonstrate its situation in intensive development. Based on this, the practical significance of resolving urban realistic development conflict and conducting intensive design for urban underground space is presented. Accordingly, the topic of intensive design for urban underground space is put forward explicitly. Furthermore, the article has analyzed the two essential concepts of urban underground space and intensivism. Taking the intensive theoretical platform in cities consisting of urban land intensive application, urban economic intensive growth, urban space intensive development, etc. as the foundation, the paper then has illustrated the significance for urban underground intensive design including accentuating functional elements and highly concentrated space scale, intimately correlation to urban systems, considerably improving the space quality of safety and comfort. On this basis, the objective for urban underground space intensive design, which contains expanding urban space capacity, optimizing urban systems, protecting urban environment and raising urban economic benefit, is provided. Thus, the paper has set up the definite, precise theoretical research platform applying significance of urban underground space intensive design as mainstay and the objective of intensive design as branches.Since urban underground noumenal space is the main research object of intensive design and functional elements together with space scale concentration is the main characteristics of intensive design, in the first place, the paper has presented and explained the'strategy for noumenal space concentration'provided with the significance of instructing practices. The design for noumenal space concentration mainly comprises complexity of functional organizations and three-dimension of spacial formation in which the former is the keystone while the latter is the measure to achieve it. Referring to the complexity of functional organizations, the paper specifically describes the design strategies of containing diverse functional component elements, coordinating complicated functional internal connections and carrying out efficient functional optimized combination. For three-dimension of spacial formation, the design strategy, which involves determining a reasonable standard for vertically dividing the space through selecting appropriate plane space concentration types and then accomplishing three-dimensional spacial concentration combination, is proposed. After extensive consideration on the problems of'extent'and'depth'restricting noumenal space concentration, the paper further demonstrates solutions for super-commercial space and exploitation concepts for deep underground space.On one hand, from the macroscopical perspective, to achieve intimate connection between underground space and external urban systems is the fundamental feature for urban underground space intensive design. In order to realize the maximum urban performance of underground space, the paper has rendered and systematically illustrated'external associated coordination strategy'. The strategy is demonstrated in three aspects: for the aim of coordinative development with overground urban space scale, the paper brings forward the design strategy of accurately evaluating resource amount in underground space, reasonably forecasting requirement for underground space and coordinating the harmonious development of underground and overground space scale; for the objective of functional integration in overground urban space, the paper has presented the design strategy, which contains interacting with urban constructions, complementing with urban transportation function and fusing with urban environment; for the goal of consummating transition function for the entrance of underground space, the design strategy satisfying main application function for the entrance, optimizing intermediary conversion function of the entrance and selecting space transition mode for the entrance is offered.On the other hand, from the environmental perspective of microscopical space,'intensification strategy for internal quality'for urban underground space intensive design achieves the intensive design objective of promoting internal value for urban underground space by improving the'quality'under the condition of steadiness of noumenal space and external related factors. The internal quality of urban underground space could be summarized from two aspects, which are the quality for spacial security and the quality for environmental comfort. To ensure the quality for spacial security, the article has provided with the design strategy of reinforcing fireproofing security design, promoting comprehensive disaster-prevention functions and improving safety management system. Concerning with the quality for environmental comfort, design strategies embracing constructing humane and healthy surroundings, forming artistic interior space, creating exterior natural environment and setting up international inducing marks are showed.This paper has conducted comprehensive and systematic research toward intensive design in urban underground space, applying the research methods of theoretical thinking, comparative observation and practical analysis. As a result, the research realms of interdisciplinary courses, such as architecture and urbanology, architecture and town planning, architecture and urban economics as well as architecture and ecology, are greatly expanded. This not only provides brand-new research perspectives and methods to study the problem, but establishes new research framework and platform, bearing corresponding social significance and practical value. Also, there might be referenced application for in-depth study on related topics in future.