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Seismic hazard analysis in Santo Domingo City Team 4 Report

Seismic hazard analysis in Santo Domingo City Team 4 Report. Outline. Study area Geological setting HVSR technique ReMi , Masw and Spac techniques Final discussion. Team Members. Pablo. Rocio. Fernando. Venezuela. Honduras. Dominican Rep. Team Members. Junior. Heriberto.

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Seismic hazard analysis in Santo Domingo City Team 4 Report

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  1. Seismic hazard analysisinSanto Domingo CityTeam 4Report

  2. Outline • Studyarea • Geological setting • HVSR technique • ReMi, Masw and Spactechniques • Final discussion

  3. Team Members Pablo Rocio Fernando Venezuela Honduras Dominican Rep.

  4. Team Members Junior Heriberto Norberto Lidia Honduras Haiti Dominican Rep. Puerto Rico

  5. Study Area Profile 6 Profile 5 Profile 4 Profile 3 Profile 2 Profile 1

  6. Geological setting of Santo Domingo Stratigraphiccolumn

  7. HVSR technique

  8. H/V data acquisition

  9. Geology (Team 4 HVSR study area)

  10. H/V station deployments

  11. H/V Results: 4.02 s 2.60 s ? ? ? Station SD03_p2-p3 (1508_9282_202) Station SD06_p3-p4 (1526_92F1_202)

  12. H/V Results: 3.70 Secs 4.32 Secs ? ? Station SD02_p3-p4 (1349_92F1_202) Station SD03_p3-p4S (1410_949A_202)

  13. H/V Results: 3.71 Secs 2.38 Secs ? ? ? Station SD07_p3-p4 (1550_949A_202) Station SD04_p2-p3 (1532_950C_202)

  14. H/V Results: 0.27 Hz 3.70 Secs 0.28 Hz 3.58 Secs ? ? Station SD01A_p3-p4 (1300_92F1_202) Station SD01B_p3-p4 (1308_949A_202)

  15. Isoperiods Map (seconds)

  16. ReMi and Maswtechniques

  17. ReMi and Masw data acquisition

  18. Location for ReMi, Spac and Masw surveys Remi and Masw Line 1 Mirador sur Av. Remi Line 2 Remi Line 3 Spac 1 Spac 2 Mirador del Sur park

  19. Remi velocity model Line 2

  20. Dispersion model Line 2

  21. Soil Characterization near to ReMi 2

  22. Soil Classification DR Seismic Code

  23. RemiModel Line 3 727 m

  24. Dispersion curve for Line 3

  25. Line 3 RemiModel Borehole S-4 Vs = 795 m/s Vs = 978 m/s 65.5 m Dispersion curve RMS error: 26.623 m/s Vs = 909.136 m/s IBC classsite B Vs = 1261 m/s Last 13.5 m Vs = 2083 m/s Limestone!

  26. MASW Line 1 results

  27. MASW Line 1 results

  28. Spactechnique

  29. Location for Spacsurvey No. 2 Remi and Masw Line 1 Mirador sur Av. Remi Line 2 Remi Line 3 Spac 1 Spac 2 Mirador del Sur park

  30. Spac survey No. 2 ground model

  31. Conclusions • HVSR resultshave a goodrelationshipwiththe geological environment of deposition (alluvialfal, prodelta), thatisthereasonbecausewegothighpredominantperiodpeaks. • Remi, Masw and Spactechniquesrevealed a highvelocitylayeringstructure, validatedby 8 boreholesdrillednearfromtheteam’sstudysite. • Remi line 2 could be defined as a Class C site (360-760 m/s, Stiff Soil- standard designs - NERHP). • Remi lines 3 could be defined as a Class B site (760-1500 m/s, Soft Rock- low-hazard design - NERHP).

  32. Thanksyou so much!

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