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An infrastructure-based approach to design scenarios in Qianhai Bay (China). Building with water


An infrastructure-based approach to design scenarios in Qianhai Bay (China). Building with water.

Rel. BERTA MAURO, FRANCESCA FRASSOLDATI, GUSTAVO AMBROSINI. Politecnico di Torino, Corso di laurea magistrale in Architettura costruzione citta', 2017


This thesis is part of a broader research, started with the Joint Workshop done in Hong

Kong to explore the relations between water and the public space at every scale, in order

to foresee the consequences of a catastrophic event that could trigger a crisis on the

urban water management infrastructure of Qianhai Bay, the so-called “Finger”. What came

out was a picture of dramatic and extended vulnerability, connected to a situation of

recurrent extreme meteorological events, as flooding and disruption, due to environmental

and planning imbalances. Those considerations have led me to research the extreme

urbanization process that is taking place in China, identifying a strict relation between the

latter and the challenge of water management. The scientific research about the urban

area of Shenzhen has revealed interesting insights into the water-related attitude and

behavior of mega-cities populations, like in Shenzhen, presenting significant evidences of

the dual- stresses that insist on the area. The Guangdong province presents the largest

water-consumption trend, characterized by an increasing pressure on water resources due

to the rapid industrialization and urbanization processes. On the other hand, the land

reclamation process, that has become a common practice on a global scale, demonstrates

to provoke significant influences on the groundwater flow systems, increasing water level.

A further increase of the water level is expected in the next years on the Qianhai Bay,

validating the speculations expressed in the initial workshop of potential flooding on the

area. With a soil composition that does not allow water infiltration, the management of

storm-water on the area has revealed a real challenge motivating me to find tools to

provide a solution. Those considerations have called into question the urban layout and

his resiliency where the “Finger” cannot foresee the water management. It shows a

potential lack to operate out of the comfort zone, laying the foundations for a specific

design solutions where the integration between the landscape and the urban environment

that intend waste-water as a resource becomes a key element. Researching an integration

between the aesthetic experience and the ecological dimension of the landscape, the

potential widespread introduction of grey-water recycle and storm-water harvesting in the urban environment has shown a valid solution to reduce the freshwater demand and the

wastewater outflow. The result is an urban active component at a small scale, a “Sponge

block”, that minimize the infrastructure system with on-site treatments performing a

significant reduction of the storm-water action on the city surface, that prevent the

rainwater to infiltrate in the ground by collecting it with green and porous pavements

contributing to the well-being of the citizenship. The project shares some of the main

principles of the sponge city, but shows also the restriction to apply them on the projects

site: it involves an holistic view of the urban environment where every component of the

city is involved and planned to perform coordinated resilient actions. However, the

“Sponge block” acts as an incremental tool inside the urban environment that deviates

from the holistic vision pursued from the sponge cities theories, presenting a local

implementation of those principle that takes into account a site-specific approach. This

project represents a solution for urban regenerations, that can be applied as relief to

consolidated urban settlements that, despite all, suffer from potential threats related to

storm-water management as the ones that insist on the Qianhai Bay. Specific conditions

and contexts, as the ones articulated in this thesis, allow to implement this design solution

to reduce the action of storm-water locally with a system able to address local water

scarcity and management issues, to mitigate uncertainty, related to extreme conditions of

future and existing cities.

For further information please contact:

Alessio Migliasso, migliasso.ale@gmail.com

Soggetti: A Architettura > AO Progettazione
Corso di laurea: Corso di laurea magistrale in Architettura costruzione citta'
Classe di laurea: NON SPECIFICATO
Aziende collaboratrici: NON SPECIFICATO
URI: http://webthesis.biblio.polito.it/id/eprint/6258
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