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Presentation at the Transport conference in Riga 2011, together with COST TU0801 meeting
Citation preview
STREET NETWORK
ISSUES FOR DISASTER
MANAGEMENT
Maria BOSTENARU DAN
Overview
Introduction
Review
Future study of 3D modelling
Conclusions
Introduction
Introduction
The street expresses the „life way“ – urban
character (Sandu)
Necessity of connecting building to a street
recognised in computer games – not in 3D
models
Review of the street as factor in vulnerability
assessment and emergency management to
see what features to incorporate in 3D
Review
Review
The assessment of vulnerability
SFB approach
Our contribution
The emergency response
Cristina Gociman approach
Italian Civil Protection approach
The street in archive photography of disasters
The assessment of vulnerability
The assessment of vulnerability
1933 Charter of Athens
Circulation network self-standing zone
1934 Master Plan of Bucharest
Circulation control expressed in street fronts: receses
> vulnerability
No „Zeilenbau“ of Le Corbusier
A central area of Bucharest was analysed
SFB approach
2000-2001 survey in a central area of
Bucharest, including street survey (width,
parked cars)
Results were included in an ArcView&MS Access
GIS system
Results were used for the HLA decision system of
Fiedrich (2004)
Later of a Disaster Management System (Markus,
2004) – considers also the change in shape of
building following an earthquake
SFB approach
Advantages: computer aided decision making,
independent of subjectivity
Disadvantages:
Depends on electric supply, not so easy in post-
disaster phase
The database has to be constantly kept up to
date
We propose an own decision system
Utility value weighting
Pairwise comparison (which might be multimedia
and 3D supported)
The street network in the northern-central area of Bucharest, as included
in the GIS model in frame of the SFB 461
SFB approach
Our contribution
Connection between seismic microzoning and
urban zonification
1934 Master Plan > vulnerability results
Earthquake Master Plan of Istanbul 2003 (zoning
defining risk sectors)
Elements of the street as defined by the
master plan: floor, fronts, parcours, section
May result into irregular shape of parcels
Commercial function > vulnerability through
soft storey
Our contribution
Disadvantages
No computer support
Lack of communication between aesthetics and
structural material (also today simulations are run
based on scores after previous performance and
not considering structural mechanics – as in
recent studies, eg. Pinho)
Floor of a street
Our contribution
Background of a street
Our contribution
Fronts of a street
Our contribution
Profiles of a street
Our contribution
The emergency response
The emergency response
Urban planning
Earthquake Master Plans
Cristina Gociman approach
Functionality of the street network (Italian
DPC)
Struttura urbana minima
Struttura urbana strategica
Cristina Gociman approach
Planning of security zones
For immediately after the earthquake (a building
such as school or even church)
For planning of emergency housing (parking areas,
green areas) <> street network
Both include evacuation ways
„strategical band“ (of green) for falling rubble
Disadvantage: No computer support (see DPC)
Advantages:
Suitable for restructuring through Master Plan intervention
Breaking ways in urban planning
Evacuation plan in case of an earthquake. Study work by the group Teodor Cucu, Alexandru Dobra, Ana Georgescu, Dragos Parcalabu, Master “Urban design”, advisors: Cristina Gociman, Tiberiu Florescu, Maria Bostenaru
Cristina Gociman approach
Italian Civil Protection approach
Short term intervention
Heavy machinery reaches Search&Rescue (see
also Fiedrich)
Fire services to buildings
Ambulances to hospitals
Importance of road network topology
Long term intervention
Importance of road network serviceability
Propping measures may block
Street blocked by rubble. Photo: maris/photocase.com
Obstacle in short term intervention
Italian Civil Protection approach
Street blocked by propping in the city of l‟Aquila, Italy, 1 year after the
2009 earthquake and the displaced people visiting their former city. Photo:
M. Bostenaru, 2010.
Obstacle in long term intervention
Italian Civil Protection approach
Italian Civil Protection approach
Considers mobility relationships between
building and street, not just static relationship
as in the previous approaches
Goretti and Sarli (2006) implemented the
method in Potenza, Southern Italy
The street in archive photography
of disasters
Grant at Canadian Centre for Architecture, 2010
Earthquake, flood, fire, revolution
Earthquake photos such as those of Genthe (1906
San Francisco earthquake) present the reaction of
people on the street > participatism http://commons.wikimedia.org/wiki/File:Quake.jpg?uselang=de
Virtual travel and artistic features in 19th century
Documentary photography
Virtual conservation of „ruins of the moment“ (Baum)
N-S boulevard of Bucharest of interwar time: the
collapsed buildings (N. Ionescu photographer)
The street in archive
photography of disasters
L„Aquila 3D model in Google Earth
http://www.comefacciamo.com/aq3d/aq3d.php
Interaction between Google Maps and Google
Earth is minimal
Satelite oblique photographs used for building
modelling
Necessity to include road serviceability in disaster
mapping (such as, for example, after the
Christchurch earthquake, NZ
http://tomnod.com/geocan/index.php)
The street in archive photography of disasters
The street in archive
photography of disasters
Also the 19th century photography of Soule
(stereo; Portland/Maine fire) is suitable for
such reconstruction
Photo modeller software requires more photos
from different angles
Ontology of photography to organise this
information (Bostenaru, 2011)
Future study of 3D modelling
Future study of 3D modelling
Only l„Aquila Come facciamo uses 3D modelling
The study of the street involves not only the
horizontal dimension from urbanism plans, but
also section and front
Vulnerability: towers, recesses
Emergency management: change of shape, rubble,
propping
Each study allows for computer aid, if it hasn„t yet
3D GIS (except of photo modelling)
Programming application by Armas et al (2010)
Future study of 3D modelling
Computer games
1997-98 „Toy Town“ exhibition at CCA (for architects)
City building games are a subgenre of construction
and management games (ex. SimCity)
1989 SimCity 2 included disaster scenarious such as
1906 San Francisco earthquake
Evolved to 3D, but complex disaster simulation is lost
Semantic enrichment of computer games with
economics part
Training in pre-disaster phase
The „hard copy“ model of constructing a
cathedral following Ken Follett„s novels
Conclusions
Conclusions
Dealing with planning of streets to reduce vulnerability and
efficiently intervene in case of a disaster
The approaches reviewed have a link to the research of the
author (direct or indirect involvment)
The vulnerability of the street has to be considered in
interaction with that of the building
Involvment of urban planning in disaster management
Issues of volume shape (and its change) call for 3D
Such approaches not yet known
Google Earth does not interact with Google Maps
Computer games might be the first step on the way to
simulations
Acknowledgements
COST action TU0801
SFB 461 research student assistantship
the support grant of the Canadian Centre for
Architecture
Marie Curie Fellowship CA‟REDIVIVUS
Marie Curie Fellowship PIANO
the course on “Risks” taught at the “Ion Mincu”
University of Architecture and Urbanism
Thank you!