Home⇛International Research Journal of Science, Technology, Education, and Management⇛vol. 2 no. 4 (2022)

Development of fragility curves for seismic vulnerability assessment: The case of Philippine General Hospital spine building

Michael B. Baylon | Maria Emilia P. Sevilla | Miller DL. Cutora | Rikki Mae S. Villa | Princess Mherlene P. Reynes | Jhona May V. Montemayor

 

Abstract:

The Philippine General Hospital (PGH) is a tertiary hospital in Ermita, Manila, that was founded on August 17, 1907. It adheres to the philosophy of providing all Filipinos with internationally competitive, cost-effective, compassionate, and accessible health care. It was recently one of the COVID-19 facilities. The PGH sits 9.2 kilometers east of the West Valley Fault, making it more vulnerable to 'The Big One,' a 7.2 magnitude earthquake. Until present, no research has been done to examine the PGH's seismic susceptibility in the case of a large-magnitude earthquake. In keeping with this, the study intended to analyze the seismic susceptibility of the Spine Building, one of PGH's oldest structures. It focused on constructing fragility curves to assess if the building could sustain a 0.4g peak ground acceleration (PGA) earthquake with a maximum likelihood of exceedance of 10%, as required by the Philippine National Structural Code (NSCP) for Seismic Zone 4 sites. The study employed 12 worldwide and 12 local earthquakes from the Incorporated Research Institutions for Seismology, with PGA excitation levels ranging from 0.1g to 3.0g (with a 0.1g gap) (IRIS). The structural model of the PGH Spine Building was created using SAP2000, which was subsequently utilized to perform Pushover Analysis using the Capacity Spectrum Method (CSM). The PGH Spine Building might collapse with 0.538g PGA, which corresponds to Intensity VIII, according to the results of the developed fragility curves, producing significant structural shaking. Furthermore, for 0.4g PGA, the calculated highest likelihood of exceedance in the 'collapse damage' condition was 5.24 percent, with no results above 10%, implying that the PGH Spine Building complies with the NSCP seismic requirement for structures located in Seismic Zone 4. As a result, an adequate retrofitting strategy is not required for the PGH Spine Building. K E Y W O R D S - Fragility curves, Philippine General Hospital (PGH), Seismic vulnerability Assessment



References:

  1. Baylon, M.B. (2015). Seismic Assestment of Transportation Lifeline Piers of Bridges and a Fish Port. 17th Association of Structural Engineers of the Philippines' International. Manila, Philippines.
  2. Baylon, M.B. (2017). Seismic Assestment of LRT Line 1 Monumento to 5th Avenue Carriageway Pier Using Fragility Curve. International Journal of Real Estate Studies, 50-59.
  3. Baylon, M.B. (2017). Seismic Assestment of Plaridel Bridge Using Fragility Curve. Research Gate.
  4. Baylon, M. B., & Marcos, M.M. (2018). Seismic Vulnerability Assessment of Adamson University Buildings' As- Built using Fragility Curves. Global Journal of Researchers in Engineering: Civil and Structural Engineering,29-49.
  5. Baylon, M.B., Caranto, H.D., Espino, A.P., & Nilo, B.D. (2017). Developing Seismic Fragility Curves of Old Hospital in Manila, Philippines. 3rd International Conference on Protection of Historical Construction. Lisbon, Pprtugal.
  6. Baylon, M.B., Lictaoa, C.S., Castillo, I.C., Dungog, C.P., & Jerusalem, L.R. (2021). Seismic vulnerability assessment of Sta. Lucia high school in Pasig City Philippines using rapid visual assessment and fragility curves. International Research Journal of Science, Technology, Education, and Management, 119-135.
  7. Carteciano, J.A. (2017). The Big One: Facts and Impacts. Retrieved from NSCP - DOST: https://nrcp.dost.gov.ph/feature-articles/280-the-big-one-facts-and-impacts
  8. Habibullah, A. & Pyle, S. (1998). Practical Three Dimensional Nonlinear Static Pushover Analysis. Structure Magazine.
  9. Hilotin, J. (2021). Deadliest earthquakes in the Philippines: What you need to know. https://gulfnews.com/special-reports/deadliest-earthquakes-in-the-philippines-what-you-need-to-know-1.1612705914449
  10. Incorporated Research Institutions for Seismology (IRIS). (n.d.). IRIS Earthquake Browser. https://ds.iris.edu/ieb/
  11. Jambalos, A.-A.S., Santos, K.R., Trillana, R.S., & Quinsaat, N.V. (2020). Seismic Vulnerability Assessment of San Agustin Church in Intramuros–Manila Using Fragility Curves
  12. Karim, K.R. & Yamazaki, F. (2003). A simplied method of constructing fragility curves for highway bridges. Earthquake Engineering and Structural Dynamics, 1603-1626.
  13. Kurian, S.A., Deb, S.K., & Dutta, A. (2006). Seismic Vulnerability Assessment of Railway Overbridge Using Fragility Curve. 4th International Conference on Earthquake Engineering. Taipei, Taiwan.
  14. Llaneta, C.A. (2020). UP-PGH begins operating as COVID-19 referral center. Retrieved from UP: https://up.edu.ph/up-pgh-begins-operating-as-covid-19-referral-center/
  15. Najam, F.A. (2017). Nonlinear Static Analysis Procedures for Seismic Performance Evaluation of Existing Buildings – Evolution and Issues. Facing the Challenges in Structural Engineering, 180-198.
  16. Nepomuceno, A. (2016). Are you ready for the ‘Big One’? https://businessmirror.com.ph/2016/10/05/are-you-ready-for-the-big-one/
  17. Philippine General Hospital. (2021). About Us. Retrieved from PGH: https://www.pgh.gov.ph/about-us/
  18. Philippine Institute of Volcanology and Seismology (PHIVOLCS). (n.d.). Destructive Earthquakes in the
  19. Philippines. https://www.phivolcs.dost.gov.ph/index.php/earthquake/destructive-earthquake-of-the philippines/17-earthquake
  20. Philippine Institute of Volcanology and Seismology (PHIVOLCS). (n.d.). Fault Finder. http://faultfinder.phivolcs.dost.gov.ph/
  21. Raza, S., Tsang, H.-H., & Wilson, J. L. (2017). Lateral Load-Drift Model for Normal and High-Strength Reinforced Concrete Columns. Australian Earthquake Engineering Society 2017 Conference. Canberra, Australia.
  22. Selda, P. Y., Luna, R. C., Quebral, R. D., Gargullo, J. B., Leobrera, K. R., Marasigan, E. D., . . . Baniquett, M. P. (2019). Seismic hazard analysis for public infrastructure in Metro Manila. 2016 Asian Regional Conference on Soil Mechanics and Geotechnical Engineering. Taipei, Taiwan.
  23. University of the Philippines Manila. (2016). Philippine General Hospital. https://www1.upm.edu.ph/node/48
  24. UP Media and Public Relations Office. (2020, August 11). https://up.edu.ph/pgh-shares-lessons-learned-during-ongoing-efforts-to-prevent-covid-19-transmission/. https://up.edu.ph/pgh-shares-lessons-learned-during-ongoing-efforts-to-prevent-covid-19-transmission/
  25. Utami, A.C., Kurniawan, R., & Fauzan. (2021). Analytical fragility curve development of maternity and children’s M. Djamil Hospital building Padang due to earthquake and tsunami. IOP Conf. Series: Earth and Environmental Science. Indonesia: IOP Publishing.
  26. Vasavada, M. & Patel V. R. (2016, May). Development of Fragility Curves for RC Buildings using HAZUS method. International Research Journal of Engineering and Technology (IRJET), 2256-2262.
  27. Yamazaki, F., Suto, T., Liu, W., Matsuoka, M., Horie, K., Kawabe, K., . . . Inoguchi, M. (2019). Development of fragility curves of Japanese buildings based on the 2016 Kumamoto earthquake. 2019 Pacific Conference on Earthquake Engineering and Annual NZSEE Conference. New Zealand: New Zealand Society for Earthquake Engineering.

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