WP 6: Validation Studies Vienna Test Case

Transcription

1 Systemic Seismic Vulnerability and Risk Analysis for Buildings, Lifeline Networks and Infrastructures Safety Gain WP 6: Validation Studies Vienna Test Case D. Schäfer, VCE A. Bosi, VCE T. Gruber, VCE H. Wenzel, VCE SYNER-G Final Workshop, Milano, March

2 Vienna - Overview Vienna Population: people Total Area: 414,89 km² Number of Districts: 23 Land Usage: Buildings (12%) Gardens and Parks (28%) Transportation (13%) Forest (18%) Agricultural Usage (15%) Water (5%) Test Area Population: 8415 people Total Area: ~ 1 km 2 Building Usage: Residential SYNER-G Final Workshop, Milano, March

3 Building Identification Procedure The first things to be filled in are the name, date, time and the building identification number as well as the address and the photo documentation. The next important parameters are the Building Usage and the Construction Year. The next objective is to fill in the construction type and the number persons which could be affected during an earthquake. The above part of the procedure is dedicated to the Ground Plan, the Elevation and the Façade of the Building. The last section of the protocol covers the secondary structures, the overall condition of the building and eventual anomalies or irregularities. SYNER-G Final Workshop, Milano, March

4 Building Identification Procedure The first things to be filled in are the name, date, time and the building identification number as well as the address and the photo documentation. The next important parameters are the Building Usage and the Construction Year. SYNER-G Final Workshop, Milano, March

5 Building Identification Procedure The next objective is to fill in the construction type and the number persons which could be affected during an earthquake. SYNER-G Final Workshop, Milano, March

6 Building Identification Procedure The above part of the procedure is dedicated to the Ground Plan, the Elevation and the Façade of the Building. SYNER-G Final Workshop, Milano, March

7 Building Identification Procedure The last section of the protocol covers the secondary structures, the overall condition of the building and eventual anomalies or irregularities. SYNER-G Final Workshop, Milano, March

8 Building Identification Procedure About 600 buildings have been assessed and the data is stored in a database. Out of these 600 buildings about 250 buildings have been measured and eigenfrequencies have been computed. A BRIMOS Recorder is positioned at the last floor of the building. The measurement is carried out for about 10 minutes and captures the ambient vibrations of the building. With these measurements the eigenfrequencies of the building in longitudinal and cross direction can be calculated. SYNER-G Final Workshop, Milano, March

9 Computation of Eigenfrequencies Längs_fft_g Längs_fft_max Längs_fft µg Quer_fft_g Quer_fft_max Quer_fft µg Hz FFT Spectrum of Building Nr. 17 Longitudinal Direction Hz FFT Spectrum of Building Nr. 17 Cross Direction Two Examples of the calculated FFT Spectrum from which the eigenfrequencies of the buildings can be determined. SYNER-G Final Workshop, Milano, March

10 Statistical Evaluation With all these measurements statistics can be done. This example shows the dependency of building height to the actual period of the buildings. SYNER-G Final Workshop, Milano, March

11 OOFIMS Preparation of data Detailed Data on Buildings Creating Census Tracts SCD 1 SCD 2 SCD 3 Through a macro in an excel file, the user can choose which of the buildings should be unified in a census tract and the necessary attributes are computed and displayed. SYNER-G Final Workshop, Milano, March

12 OOFIMS Data Sheet Census Tracts Number of Buildings Percentages of the building types City Sub-City-District Identification Sub-City-Districts Population Household Size Employment Rate Percentage Retail Percentage Service Percentage Other City Identification SYNER-G Final Workshop, Milano, March

13 EQvis Input - Vienna Soil & Seismic Hazard Soil type: B & C Micro-zonation of Wien performed in the SEISMID project Seismic Zonation From SHARE project SYNER-G Final Workshop, Milano, March

14 EQvis Input - Vienna Buildings Building inventory Classified building by building SYNER-G Final Workshop, Milano, March

15 EQvis Input - Vienna Road Network Road Network & Road Tunnels & Road Bridges SYNER-G Final Workshop, Milano, March

16 EQvis Input - Vienna Railway Network Railway Network & Railway Tunnels & Railway Bridges SYNER-G Final Workshop, Milano, March

17 EQvis Input - Vienna Soil, Buildings Road Network Railway Network & Hazard SYNER-G Final Workshop, Milano, March

18 EQvis Input - Vienna Here the Scenario Earthquake that has been used to perform the analyses around the Case Study in Vienna is shown. The epicenter is located South East of the city center. The earthquake is a Magnitude 6.5 with an epicenter depth of 5 km. SYNER-G Final Workshop, Milano, March

19 EQvis Output - Vienna Building Damage: mean damage level meandamagelevel = = g i *i + g m *m + g h *h + g c *c SYNER-G Final Workshop, Milano, March

20 EQvis Output - Vienna Building Damage: mean damage level 0 < meandamage<0,25 0,25 < meandamage<0,5 0,5 < meandamage<0,75 SYNER-G Final Workshop, Milano, March

21 EQvis Output - Vienna Building Damage: mean damage level 0,75 < meandamage < 1 SYNER-G Final Workshop, Milano, March

22 EQvis Output - Vienna Road Network damage: mean damage level roads road bridges SYNER-G Final Workshop, Milano, March

23 EQvis Output - Vienna Railway Network damage: mean damage level railways railway tunnels railway bridges SYNER-G Final Workshop, Milano, March

24 Oofims Probabilistic Analysis - Vienna Systems analysed: building stock (BDG) road network (RDN) water supply system (WSS) electric power network (EPN) runs - Monte Carlo simulation (MCS) For each system, selected Performance Indicators (PI s) are calculated based on the estimated damages and functionality losses of the different components The overall performance of each system expressed by the Mean Annual Frequency (MAF) of exceedance and the moving average μ and moving standard deviation σ of the PIs Output for a selected scenario are also produced SYNER-G Final Workshop, Milano, March

25 Oofims Probabilistic Output Vienna BDG Building average death Building average injured SYNER-G Final Workshop, Milano, March

26 Oofims Probabilistic Output Vienna BDG Building average collapse Building average yielding SYNER-G Final Workshop, Milano, March

27 Oofims Probabilistic Output Vienna BDG Building average displaced person Good Weather Building average displaced person Bad Weather SYNER-G Final Workshop, Milano, March

28 Oofims Probabilistic Output Vienna RDN Roads average broken Roads average blocked Roads average unusable SYNER-G Final Workshop, Milano, March

29 Oofims Probabilistic Output Vienna RDN Roads average blocked & collapsed bdg Roads average blocked Roads average unusable SYNER-G Final Workshop, Milano, March

30 Oofims Probabilistic Output Vienna WSS Average pipe damage Average demand nodes damage Low damage level SYNER-G Final Workshop, Milano, March

31 Oofims Probabilistic Output Vienna EPN Average damage demand nodes Average damage transmission nodes SYNER-G Final Workshop, Milano, March

32 Oofims Probabilistic Analysis Vienna Run = M = 6.72 Hypocenter: , depth: 10 (distance ~ 14 km) BDG - Deaths 34 BDG - Injuries 231 BDG - Collapse 38 BDG - Yield 241 BDG - Displaced (GW) BDG - Displaced (BW) EPN - Broken Transmission Stations 5 EPN - Non functional demands 102 RDN - Broken 0 RDN - Blocked 33 RDN - BlockedByBridge 0 RDN - Non functional nodes 33 WSS - Non functional demands 0 SYNER-G Final Workshop, Milano, March

33 Oofims Probabilistic Output Vienna BDG Building death (M = 6.72 event) Building injured (M = 6.72 event) SYNER-G Final Workshop, Milano, March

34 Oofims Probabilistic Output Vienna BDG Building collapses (M = 6.72 event) Building yielding (M = 6.72 event) SYNER-G Final Workshop, Milano, March

35 Oofims Probabilistic Output Vienna BDG Building displaced person Good Weather (M = 6.72 event) Building displaced person Bad Weather (M = 6.72 event) SYNER-G Final Workshop, Milano, March

36 Oofims Probabilistic Output Vienna RDN Roads blocked (M = 6.72 event) Roads unusable (M = 6.72 event) SYNER-G Final Workshop, Milano, March

37 Oofims Probabilistic Output Vienna RDN Bdg collapses (M = 6.72 event) Roads blocked (M = 6.72 event) Roads unusable (M = 6.72 event) SYNER-G Final Workshop, Milano, March

38 Oofims Probabilistic Output Vienna WSS M = 6.72 event did not produce relevant damage on the WSS M = 6.72 event did not produce relevant damage on the EPN SYNER-G Final Workshop, Milano, March

39 Thank You for your attention! SYNER-G Final Workshop, Milano, March