Seismic sensitivity analysis of the common structural components of Nepalese Pagoda temples
- 549 Downloads
- 8 Citations
Abstract
Nepal is located in a highly active tectonic region of the Himalayan belt, one of the most severe earthquake prone areas of the world. Nepal is lying between the Indian and the Eurasian plate, which are moving continuously, resulting in frequent devastating earthquakes. Moreover, different authors state that the accumulated slip deficit (central seismic gap) is likely to produce large earthquakes in the future. Cultural heritage buildings and monuments are, therefore, at risk, and the eventual cultural loss in the consequence of an earthquake is incalculable. Post-seismic surveys of past earthquakes have shown the potential damage that unreinforced masonry structures, particularly Pagoda temples, may suffer in future earthquakes. Most of the Nepalese Pagoda temples, erected during XIV century, are considered non-engineered constructions that follow very simple rules and construction detailing in respect to seismic resistance requirements and, in some cases, without any concern for seismic action. Presently, conservation and restoration of Nepalese temples is one of the major concerns, since they are considered world heritage with universal value. The present paper is devoted to outline particular building characteristics of the UNESCO classified Nepalese Pagoda temples and the common structural fragilities, which may affect their seismic performance. Moreover, based on a parametric sensitivity analysis, structural weaknesses and fragilities of Pagoda temples were identified associated to the local and traditional construction techniques, detailing and common damages.
Keywords
Pagoda temples Structural component Ambient vibration FE modeling Parametric analysis Structural fragilityNotes
Acknowledgments
The first author would like to express his gratitude to the scholarship under the Erasmus Mundus Action 2 Partnership, EU-NICE project, supporting the research to develop within the PhD at University of Aveiro, Portugal. The authors also kindly thank Jishnu Kumar Subedi (Institute of Engineering, Nepal), Toshikazu Hanazato (Mie University, Japan) and Kaori Fujita (Tokyo University, Japan) for their kind consent to use the ambient vibration measurement raw data of Radha Krishna temple.
References
- Aras F, Krstevska L, Altay G, Tashkov L (2011) Experimental and numerical modal analyses of a historical masonry palace. J Eng Struct 25:81–91Google Scholar
- ARTeMIS (2011) Extractor Pro software. Issued by Structural Vibration Solutions Aps. NOVI Science Park, Niels Jernes Vej 10, DK 9220 Aalborg East, DenmarkGoogle Scholar
- Bayraktar A, Türker T, Sevım B, Altunisik AC, Yildirim F (2009) Modal parameter identification of Hagia Sophia Bell-Tower via ambient vibration test. J Nondestruct Eval 28:37–47. doi: 10.1007/s10921-009-0045-9 CrossRefGoogle Scholar
- Bilham R, Gaur VK, Molnar P (2001) Himalayan seismic hazard. Science 293:1442–1444CrossRefGoogle Scholar
- Bonapace B, Sestini V (2003) Traditional materials and construction technologies used in the Kathmandu valley. Paragraphic for the United Nations Educational, Scientific and Cultural, 7 Place de Fontenoy, 75352 Paris 07 SP, FranceGoogle Scholar
- Chamlagain D (2009) Earthquake scenario and recent efforts toward earthquake risk reduction in Nepal. J South Asia Disaster Stud 2(1):57–80Google Scholar
- Chaulagain H, Rodrigues R, Jara J, Spacone E, Varum H (2013) Seismic response of current RC buildings in Nepal: a comparative analysis of different design/construction. J Eng Struct 49:284–294CrossRefGoogle Scholar
- Chen JF, Morozov EV, Shankar K (2012) A combined elastoplastic damage model for progressive failure analysis of composite materials and structures. J Compos Struct 94:3478–3489CrossRefGoogle Scholar
- Faggiano B, Marzo A, Formisano A, Mazzolani FM (2009) Innovative steel connections for the retrofit of timber floors in ancient buildings: a numerical investigation. J Comput Struct 87:1–13CrossRefGoogle Scholar
- Faggiano B, Grippa MR, Marzo A, Mazzolani FM (2011) Experimental study for non-destructive mechanical evaluation of ancient chestnut timber. J Civ Struct Health Monit 1:103–112CrossRefGoogle Scholar
- Foti D, Diaferio M, Giannoccaro NI, Mongelli M (2012) Ambient vibration testing, dynamic identification and model updating of historic tower. NDT & E Int 47:88–95CrossRefGoogle Scholar
- Gentile C, Saisi A (2007) Ambient vibration testing of historic masonry towers for structural identification and damage assessment. J Constr Build Mater 21:1311–1321CrossRefGoogle Scholar
- Indirli M, Kouris LAS, Formisano A, Borg RP, Mazzolani FM (2013) Seismic damage assessment of unreinforced masonry structures after the Abruzzo 2009 earthquake: the case study of the historical centers of L’Aquila and Castelvecchio Subequo. Int J Archit Herit 7:536–578CrossRefGoogle Scholar
- Jaishi B, Ren WX, Zong ZH, Maskey PN (2003) Dynamic and seismic performance of old multi-tiered temples in Nepal. J Eng Struct 25:1827–1839CrossRefGoogle Scholar
- Júlio ENBS, Silva Rebelo CA, Dias-da-Costa DASG (2008) Structural assessment of the tower of the University of Coimbra by modal identification. J Eng Struct 30:3468–3477CrossRefGoogle Scholar
- Krstevska L, Tashkov L, Naumovski N, Florio G, Formisano A, Fornaro A, Landolfo R (2010) In-situ experimental testing of four historical buildings damaged during the 2009 L’Aquila earthquake. In: Proceedings of the COST action C26 final conference on urban habitat constructions under catastrophic events, 16–18 Sept, Naples, CRC Press, Taylor and Francis Group, London, pp 427–432. ISBN: 978-0-415-60685-1Google Scholar
- KVPT/BKT (2011) Kathmandu valley preservation trust, Patan/Bhaktapur municipality, Bhaktapur. Drawings of Nepalese Pagoda temples, Nepal. http://www.kvptnepal.org, http://www.bkt-municipality.gov.np
- MoHA, DPNet, (2009) Ministry of Home and Nepal Disaster Preparedness Network-Nepal Nepal Disaster Report 2009: The Hazardscape and Vulnerability. Jagadamba Press, Kathmandu, Nepal. ISBN: 9937-2-1301-1Google Scholar
- Neves F, Costa A, Vicente R, Oliveira CS, Varum H (2012) Seismic vulnerability assessment and characterization of the buildings on Faial Island, Azores. Bull Earthq Eng 10:27–44. doi: 10.1007/s10518-011-9276-0 CrossRefGoogle Scholar
- Nienhuys S (2003) Options for reconstruction and retrofitting of historic Pagoda temples, reconstruction of temples in Kathmandu. HUYS ADVIES, Sept. http://www.nienhuys.info/mediapool/49/493498/data/Retrofitting_KVPT_HA_2003.pdf
- Parajuli YK (1986) Bhaktapur Development Project (BDP): experiences in preservation and restoration in medieval town (1974–1985). Deutsche Gesellschaft fuer Technisches Zuzammenarbeit (GTZ), FrankfurtGoogle Scholar
- Parajuli HR, Kiyono J, Taniguch H, Toki K, Furukawa A, Maskey PN (2010) Parametric study and dynamic analysis of a historical masonry building of Kathmandu. Disaster Mitig Cult Herit Hist Cities 4:149–156Google Scholar
- Pradha R (2000) Seismicity and traditional buildings of Kathmandu valley, Nepal. In: Proceedings of the ICOMOS International Wood Committee (IIWC), earthquake-safe: lessons to be learned from traditional construction, international conference on the seismic performance of traditional buildings, 16–18 Nov, Istanbul, Turkey. http://www.icomos.org/iiwc/seismic/Pradhan.pdf
- Ranjitkar RK (2000) Seismic strengthening of the Nepalese Pagoda: progress report, In: Proceedings of the ICOMOS International Wood Committee (IIWC), earthquake-safe: lessons to be learned from traditional construction, international conference on the seismic performance of traditional buildings, 16–18 Nov, Istanbul, Turkey. http://www.icomos.org/iiwc/seismic/Ranjitkan.pdf
- Ranjitkar RK (2006) Heritage homeowner’s preservation manual. Kathmandu valley World Heritage Site, Nepal: advice for maintenance of historic houses in the Kathmandu valley. Integrated Community Development and Cultural Heritage Site Preservation in Asia and the Pacific through Local Effort Programme (LEAP). UNESCO Bangkok, UNESCO Kathmandu. ISBN: 978-9937-2-0223-7Google Scholar
- SAP2000 Ultimate 15.0.0. (2011) Structural analysis program. Computer and Structures. Inc. 1976–2011, Berkeley, CAGoogle Scholar
- Shakya M (2010) Modal analysis using ambient vibration measurement and damage identification of three-tiered Radha Krishna temple. Master thesis, Purbanchal University, NepalGoogle Scholar
- Shakya M, Varum H, Vicente R, Costa A (2012) Structural vulnerability of Nepalese Pagoda temples. In: Proceedings of the 15th World Conference on Earthquake Engineering, 24–28 Sept, Lisbon, Portugal, p 2919Google Scholar
- Thapa JB (2011) Test and simulation of brick masonry wall of historic buildings. Master thesis, Tribhuvan University, NepalGoogle Scholar
- Theophile E, Ranjitkar RK (1992) Timber conservation problems of the Nepalese Pagoda temple. In: Proceedings of the ICOMOS International Wood Committee, 8th international symposyum, Norway, pp 85–124Google Scholar
- Tiwari SR (2009) Temples of the Nepal valley. Himal Books, Kathmandu, NepalGoogle Scholar
- Tomazevic M, Sheppard P, Zarnic R (1985) Assessment of earthquake resistance of old urban and rural nuclei. Institute for Testing and Research in, Materials and Structures, 12, 61000 Ljubljana, YugoslaviaGoogle Scholar
- UNDP, BCPR, (2004) Reducing disaster risk: a challenge for development. A global report. New York, United Nations Development Programme/Bureau for Crisis Prevention and Recovery. ISBN: 92-1-126160-0Google Scholar