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Risico's aardbevingen
Groningen
Plaats: EMG Groningen
Datum: 5 maart 2015
Ing. R. Zijlstra
Civiel Ingenieur & GeoICT
Specialist:
Aardbevingen & Stedebouw 1994
Patras Griekenland & GeoICT
2
'Angst' & Bevingen:
●Aardbevingen in de toekomst
●Gebouwen en veiligheid
●Totale analyse van gehele regio
●Voorbeeld van enkele gebouwen en kwetsbaarheid
●Vragen?
3
Hoe ontstaan nu de bevingen?
4
Wat kunnen we verwachten?
http://rijnland.gea-geologie.nl/sites/default/files/LeidseWinterlezingen%20Sintubin%2020150111-pdf.pdf
5
Intensiteit volgens NAM
Bron: http://onlinelibrary.wiley.com/doi/10.1002/2014JB011663/full
Presentatie Aardbevingen & veiligheid bestaande gebouwen Groningen 5 maart 2015 in EMG Groningen
7
Oh jee.. een ‘test’ beving
8
Dus.... en?
●NAM verwacht bevingen tot 5 Mag SVR. Hoeveel G-kracht is dat?
●Baksteen is als een 'koekje‘. Breekt!
●Schade repareren is gevaarlijk.
●URM1 / 2 / 3
●Staalbouw?
●Houtbouw?
9
Het 'gevoel' van PGA =
versnelling
●Peak ground acceleration (PGA) is a measure of
earthquake acceleration on the ground and an important
input parameter for earthquake engineering, also known
as the design basis earthquake ground motion.
10
Ok.. 0.5 PGA dus in Groningen?
Bron: http://en.wikipedia.org/wiki/Peak_ground_acceleration
11
Het gebied met risico's obv PGA
12
Wie en waar?
13
Ok... en onze gebouwen dan?
(ter illustratie een indicatie)
14
Even wat getallen …
(ter illustratie een indicatie)
15
Wat zegt Europa...?
(EN1998 vanuit 2005)
Bron: http://curee.org/architecture/docs/ERES_2003_Slak-Kilar.pdf
16
Eisen vanuit Europa:
17
Eisen Europa:
18
Ok! En wat nu dan?
19
Even een trilling doen
20
Regenboogschool Bedum
21
Dus wat nu?
22
Kwetsbaarheid voor de
toekomst...?
23
Contact Richard Zijlstra
●Civiele Techniek & GeoICT vraagstukken:
●Aardbevingen, overstromingen, risicoanalyses
●Onderzoek, ontwikkeling, geo-analyses
●Twitter: @Geoneer
●Email:
●Linkedin:

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Presentatie Aardbevingen & veiligheid bestaande gebouwen Groningen 5 maart 2015 in EMG Groningen