Cities are resulting of several urban stratifications across time and space. Made up of several layers whose interrelationship often remains ambiguous. These strata remain in eternal dualities, and whether they are relational, functional, sociological, morphological or other, they arouse the interest of many specialists. However, the approaches used to study the spatial dimensions of urban manifestations often have strong limitations, mainly caused by the lack of suitable methods for experimenting with this subject (MAZOUZ, 2018). In this essay, which is part of an ongoing doctoral research, studying the correlation between urban morphologies and user behaviors, we will try to answer a recurring questioning which is: "what is the capacity of development policies to create urban continuity?" "To do so, we will study the case of Bejaïa, a three-thousand-year-old city located in northeastern Algeria and whose urban development is generating major dysfunctions. Between a historical core marked by the establishment of several civilizations (from the Phoenician to the French period), followed by an unequaled expansion in the postindependence period dominated by the perpetuation of the model of modernist functionalism. These generate cuts that these policies try to absorb as best they can. First, we’ll treat the morphogenetic evolution of the different layers of the city. It consists of a diachronic reading that tends to dissect the morphogenesis of the city. It will be accompanied by a critical reading of the planning policies that have led to the current configuration. Second, in order to understand the urban fact of Bejaia and the different interrelationships between the strata that make up its fabric, we opt for space syntax as a tool of space’s modeling. This method makes it possible to detect the components of the spatial structure and the relationships between its different entities. Such an operation supposes studying the configuration of the urban space with a view to highlighting its constituents and its framework, and to identify the existing reciprocal relationships. The theory of spatial syntax defines cities as sets of blocks and networks of spaces located between them. These networks link a set of street spaces thus forming the structural framework that supports and ensures the maintenance and overall uniqueness of the space studied. The spatial syntax stipulates that each system assimilated to an urban space has its own architecture and therefore has its own topology (AL_SAYED & al, 2014), which this method allows to analyze and quantify. This study based on axial map analysis by the DepthMapX © simulation software will analyse the spatial structure of the urban fabric of Bejaïa. The interpretation of the various analytical values of connectivity and integration of the system, calculated by the software, will make it possible to highlight the degree of continuity / interruptions of the urban network. That such a morphological decortication of urban systems will lead us to better understand the interactions that take place there and will help us to highlight emerging dysfunctions. This way, we could even identify the spatiotemporal origins of these dysfunctions in order to better resolve them.

Cities are resulting of several urban stratifications across time and space. Made up of several layers whose interrelationship often remains ambiguous. These strata remain in eternal dualities, and whether they are relational, functional, sociological, morphological or other, they arouse the interest of many specialists. However, the approaches used to study the spatial dimensions of urban manifestations often have strong limitations, mainly caused by the lack of suitable methods for experimenting with this subject (MAZOUZ, 2018). In this essay, which is part of an ongoing doctoral research, studying the correlation between urban morphologies and user behaviors, we will try to answer a recurring questioning which is: "what is the capacity of development policies to create urban continuity?" "To do so, we will study the case of Bejaïa, a three-thousand-year-old city located in northeastern Algeria and whose urban development is generating major dysfunctions. Between a historical core marked by the establishment of several civilizations (from the Phoenician to the French period), followed by an unequaled expansion in the postindependence period dominated by the perpetuation of the model of modernist functionalism. These generate cuts that these policies try to absorb as best they can. First, we’ll treat the morphogenetic evolution of the different layers of the city. It consists of a diachronic reading that tends to dissect the morphogenesis of the city. It will be accompanied by a critical reading of the planning policies that have led to the current configuration. Second, in order to understand the urban fact of Bejaia and the different interrelationships between the strata that make up its fabric, we opt for space syntax as a tool of space’s modeling. This method makes it possible to detect the components of the spatial structure and the relationships between its different entities. Such an operation supposes studying the configuration of the urban space with a view to highlighting its constituents and its framework, and to identify the existing reciprocal relationships. The theory of spatial syntax defines cities as sets of blocks and networks of spaces located between them. These networks link a set of street spaces thus forming the structural framework that supports and ensures the maintenance and overall uniqueness of the space studied. The spatial syntax stipulates that each system assimilated to an urban space has its own architecture and therefore has its own topology (AL_SAYED & al, 2014), which this method allows to analyze and quantify. This study based on axial map analysis by the DepthMapX © simulation software will analyse the spatial structure of the urban fabric of Bejaïa. The interpretation of the various analytical values of connectivity and integration of the system, calculated by the software, will make it possible to highlight the degree of continuity / interruptions of the urban network. That such a morphological decortication of urban systems will lead us to better understand the interactions that take place there and will help us to highlight emerging dysfunctions. This way, we could even identify the spatiotemporal origins of these dysfunctions in order to better resolve them.