Research On Collaborative Renewal Strategy Of Existing Underground Commercial Space In Northeast China

Due to the specific historical background,the main cities in Northeast China have built a large number of existing underground commercial spaces transformed from civil air defense projects since the 1970 s.These underground commercial spaces are mostly "fragmented" under the urban trunk roads or urban squares,which once became popular for a time.However,they are now in disrepair and no longer energetic.Since entering the 21 st century,the arrival of underground rail transit provides a development opportunity for the existing underground commercial space developed from the scattered distribution of special background,which is expected to be integrated.This paper focuses on the existing underground commercial space,which is a special type of space.Through the field survey and questionnaire survey of the existing underground space of representative cities in Northeast China,this paper clarifies its development status and space type characteristics,explores the internal efficiency mechanism of its collaborative renewal,and puts forward corresponding collaborative renewal strategies to improve the existing underground commercial space in Northeast China It provides a theoretical basis for the future development.This paper is divided into four chapters.The first chapter is the introduction,which states the research background,research purpose and significance,domestic and foreign research review,defines the object of collaborative renewal,and defines and explains the relevant concepts and theories.The second chapter is the investigation of the current situation of the existing underground commercial space in Northeast China.Through data collection and field investigation,it summarizes the four stages of the evolution of the existing underground commercial space and its surrounding areas.Through the field survey,it summarizes the three "fragmentation" characteristics and three types of space of the existing underground commercial space in Northeast China,and defines and discusses the coordination under different space-time backgrounds The paper discusses the dialectical relationship between collaborative renewal and synergistic effect.In the third chapter,the theoretical framework of collaborative renewal and efficiency is established,and the elements of collaborative renewal are investigated and analyzed by analogy The collaborative effectiveness of 20 existing underground commercial areas is evaluated in three dimensions of function,space and comprehensive benefit.Based on the pre work,three synergetic mechanisms for collaborative renewal of existing underground commercial space are proposed innovatively,and the participation relationship of efficiency mechanism in different stages of collaborative renewal is discussed.In the fourth chapter,firstly,the principle of collaborative renewal of the existing underground commercial space in Northeast China is clarified.On this basis,the external coordination strategy of collaborative multi-dimensional space coordination is proposed for the existing underground commercial space area with weak spatial index;the organic integration strategy of collaborative multi-function system is proposed for the area with weak function index;and the area with weak comprehensive benefit index is proposed The overall promotion strategy of collaborative multilateral comprehensive benefits is proposed.