Efectos de la construcción de la autovía orbital B-40 en la estructura urbana policéntrica de la Región Metropolitana de Barcelona (RMB)
The aim of this research is to analyze the impact of the orbital motorway B-40 or fourth belt Barcelona in the polycentric urban structure of the Barcelona Metropolitan Region or (BMR). The changes discussed in this research are the result of distance variation between the different urban centers of...
| Autor: | |
|---|---|
| Tipo de recurso: | tesis doctoral |
| Estado: | Versión publicada |
| Fecha de publicación: | 2016 |
| País: | España |
| Institución: | CBUC, CESCA |
| Repositorio: | TDR. Tesis Doctorales en Red |
| OAI Identifier: | oai:www.tdx.cat:10803/403881 |
| Acceso en línea: | http://hdl.handle.net/10803/403881 https://dx.doi.org/10.5821/dissertation-2117-105566 |
| Access Level: | acceso abierto |
| Palabra clave: | Infraestructura de transporte Policentrismo Conectividad Accesibilidad Transport infrastructure Polycentrism Connectivity Accessibility 625 71 |
| Sumario: | The aim of this research is to analyze the impact of the orbital motorway B-40 or fourth belt Barcelona in the polycentric urban structure of the Barcelona Metropolitan Region or (BMR). The changes discussed in this research are the result of distance variation between the different urban centers of the MRB and the transformation of mobility patterns. Infrastructure B-40 was initially called by roads planners as Fourth Ring Road Barcelona, later in the territorial it changed to a typology of orbital motorway and designated B-40. The name of B-40 Motorway corresponds to its ability to bind different urban systems of the Vallès Oriental, Vallès Occidental and Baix Llobregat setting up a metropolitan corridor in the sector known as second crown of Barcelona. This infrastructure has appeared in different planning documents for fifty years and now is under construction. In this research, the layout of the B-40 proposed in the Territorial Metropolitan Plan (PTMB) is evaluated. The methodology developed is structured assuming that the level of Polycentricity depends on the size and location of the centers (morphological polycentrism) and relations between them (functional polycentrism). Polycentrism is evaluated for two different situations with (current situation ) and without (future situation) path and for three different periods. Polycentrism change is evaluated through a set of indicators use information flows between urban centers. Mobility flows for different situations and periods are estimated using a origin constrain gravity model in which the impedance function is the matrix of minimum distances. The research used Green index (the special functional polycentricity of the urban network), the indicator Potential Accessibility (commuting is used as an activity function, and minimum distances matrix as an impedance function), Shannon entropy index (use the LTL information) and a series of territorial indicators that facilitate interpretation of the results. The results obtained indicate that the morphological characteristics of the territorial system not present modifications at short notice by insertion of a road. However, functional relationships show that the process of decentralization of the activity to other crowns of the BMR. The B-40 structure, a road corridor which spatial modifies the sector of the AP-7 at Vilafranca where the municipalities of small size and demographic weight experience changes in accessibility. Another area where important changes are observed corresponding to the outermost municipalities Vallès Oriental. In the area of Maresme, the influence of the B-40 is moved to the furthest municipalities of Mataró. The Garraf area, presents significant changes in connectivity relationships between its main sub center Vilanova I la Geltrú and the surrounding municipalities. At a general level, it is seen that the biggest effect of the B-40 is produced in the interior of the BMR, at the level of the coastline municipalities experience few modifications. |
|---|