Earthquakes and Structures

  • 제20권6호
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  • Pages.617-626
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  • 2021
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Ground motion characteristics of the 2015 Gorkha earthquake sequence

  • Pan, Yi (School of Civil Engineering, Southwest Jiaotong University) ;
  • Chang, Zhiwang (School of Civil Engineering, Southwest Jiaotong University) ;
  • Li, Cuihua (College of Civil Engineering and Architecture, Zhejiang University of Technology) ;
  • Shi, Shengjie (School of Civil Engineering, Southwest Jiaotong University)
  • 투고 : 2020.01.02
  • 심사 : 2021.05.14
  • 발행 : 2021.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

On 25 April - 12 May 2015, a series of large earthquakes struck the north-central part of Nepal, causing not only a substantial number of casualties, but also heavy damage to the building structures and infrastructure facilities. Up to now, most of seismic reconnaissance studies about this event have attributed the structural damage and life losses to the relatively loose implementation of the building design codes in Nepal, as most of those damaged structures were largely owner-built. Based on the quite limited ground motion data, this paper investigated the primary characteristics of the Nepal earthquake sequence. It is highlighted that the pulse-like features are significant at both the soft and rock sites, which is also responsible for the unique characteristics of the main-shock ground motions other than site effects.

키워드

과제정보

This work is financially supported by National Natural Science Foundation of China (No. 51708461, No. 51878559), Ministry of Science and Technology of China (No. KY201801005), Sichuan Science and Technology Program (No. 2021JDTD0012), Applied Basic Research Project of Sichuan Science and Technology Department (No. 2020YJ0077). This study was completed when the corresponding author works as a post-doctoral research fellow in the University of Bristol, and the financial support from the China Scholarship Council is highly appreciated.

참고문헌

  1. Akhlaghi, M.M., Bose, S., Mohammadi, M.E., Moaveni, B., Stavridis, A. and Wood, R.L. (2021), "Post-earthquake damage identification of an RC school building in Nepal using ambient vibration and point cloud data", Eng. Struct, 227, 111413. https://doi.org/10.1016/j.engstruct.2020.111413.
  2. Arendt, L., Hortacsu, A., Jaiswal, K., Bevington, J., Shrestha, S., Lanning, F., Mentor-William, G., Naeem, G. and Thibert, K. (2017), "Implementing Nepal's National Building Code: a case study in patience and persistence", Earthq. Spectra, 33(S1), S167-S183. https://doi.org/10.1193/121716EQS242M.
  3. Asimaki, D., Mohammadi, K., Mason, H.B., Adams, R.K., Rajaure, S. and Khadka, D. (2017), "Observations and simulations of basin effects in the Kathmandu Valley during the 2015 Gorkha, Nepal, earthquake sequence", Earthq. Spectra, 33(S1), S35-S53. https://doi.org/10.1193/013117eqs022m.
  4. Baker, J.W. (2007), "Quantitative classification of near-fault ground motions using wavelet analysis", Bull. Seismol Soc Am, 97(5), 1486-1501. https://doi.org/10.1785/0120060255.
  5. Barbosa, A.R., Fahnestock, L.A., Fick, D.R., Gautam, D., Soti, R., Wood, R., Moaveni, B., Stavridis, A., Olsen, M.J. and Rodrigues, H. (2017), "Performance of medium-to-high rise reinforced concrete frame buildings with masonry infill in the 2015 Gorkha, Nepal, earthquake", Earthq. Spectra, 33(S1), S197-S218. https://doi.org/10.1193/051017eqs087m.
  6. Bhagat, S., Samith-Buddika, H.A.D., Adhikari, R.K, Shrestha, A., Bajracharya, S., Joshi, R., Singh, J., Maharjan, R. and Wijeyewickrema, A.C. (2018), "Damage to cultural heritage structures and buildings due to the 2015 Nepal Gorkha earthquake", J. Earthq. Eng., 22(10), 1861-1880. https://doi.org/10.1080/13632469.2017.1309608.
  7. Bijukchhen, S., Takai, N., Shigefuji, M., Ichiyanagi, M. and Sasatani, T. (2017), "Strong-motion characteristics and visual damage assessment around seismic stations in Kathmandu after the 2015 Gorkha, Nepal, earthquake", Earthq. Spectra, 33(S1), S219-S242. https://doi.org/10.1193/042916eqs074m.
  8. Brando, G., Rapone, D., Spacone, E., O'Banion, M.S., Olsen, M.J., Barbosa, A.R., Faggella, M., Gigliotti, R., Liberatore, D., Russo, S., Sorrentino, L., Bose, S. and Stravidis, A. (2017), "Damage reconnaissance of unreinforced masonry bearing wall buildings after the 2015 Gorkha, Nepal, earthquake", Earthq. Spectra, 33(S1), S243-S273. https://doi.org/10.1193/010817eqs009m.
  9. Center for engineering strong motion data (2016). http://www.strongmotioncenter.org/cgibin/CESMD/Multiplesearch1_DM2.pl?event_name=nepal&magmin=4.0&magmax=80&byear=2015&eyear=2016&stn_ident=&type=Any&Material=Any&Height=&accmin=&accmax=&hdistmin=&hdistmax.
  10. Chen, M. and Wei, S. (2019), "The 2015 Gorkha, Nepal, Earthquake Sequence: II. Broadband Simulation of Ground Motion in Kathmandu", Bull. Seismol. Soc. Am., 109(2): 672-687. https://doi.org/10.1785/0120180174.
  11. Champion, C. and Liel, A. (2012), "The effect of near-fault directivity on building seismic collapse risk", Earthq. Eng. Struct. Dyn., 41(10), 1391-1409. https://doi.org/10.1002/eqe.1188.
  12. Chang, Z., Lui, Z., Chen, Z. and Zhai, C. (2019), "Use of near-fault pulse-energy for estimating critical structural responses", Earthq. Struct., 16(4): 415-423. https://doi.org/10.12989/eas.2019.16.4.415.
  13. Chang, Z., Luca, F.D. and Goda, K. (2019), "Automated classification of near-fault acceleration pulses using wavelet packets", Comput-Aided Civil Infrastruct., 34, 569-585. https://doi.org/10.1111/mice.12437.
  14. Chang, Z., Sun, X., Zhai, C., Zhao, J. and Xie, L. (2016), "An improved energy-based approach for selecting pulse-like ground motions", Earthq Eng Struct Dyn, 45, 2405-2411. https://doi.org/10.1002/eqe.2758.
  15. Chen, H., Xie, Q., Li, Z., Xue, W. and Liu, K. (2017), "Seismic damage to structures in the 2015 Nepal earthquake sequences", J. Earthq. Eng., 21, 551-578. https://doi.org/10.1080/13632469.2016.1185055.
  16. Gautam, D., Adhikari, R., Rupakhety, R. and Koirala, P. (2020), "An empirical method for seismic vulnerability assessment of Nepali school buildings", Bull. Earthq. Eng., 18(13), 5965-5982. https://doi.org/10.1007/s10518-020-00922-z.
  17. Guo, G., Yang, D. and Liu, Y. (2018), "Duration effect of near-fault pulse-like ground motions and identification of most suitable duration measure", Bull. Earthq. Eng., 16(11), 5095-5119. https://doi.org/10.1007/10.1007/s10518-018-0386-9.
  18. Hartzell, S.H., Carver, D.L. and King, K.W. (1994), "Initial investigation of site and topographic effects at Robinwood Ridge California", Bull. Seismol. Soc. Am., 84(5), 1336-1349. https://doi.org/10.1785/BSSA0840051336
  19. Kempton, J.J. and Stewart, J.P. (2006), "Prediction equations for significant duration of earthquake ground motions considering site and near-source effects", Earthq. Spectra, 22(4), 985-1013. https://doi.org/10.1193/1.2358175.
  20. Li, C., Zhai, C. and Kunnath, S. (2018), "A Criterion to Select Directivity-Induced Pulses", Bull. Seismol. Soc. Am, 109(1), 476-481. https://doi.org/10.1785/0120180101.
  21. Lizundia, B., Davidson, R.A., Hashash, Y.M.A. and Olshansky, R. (2017), "Overview of the 2015 Gorkha, Nepal, earthquake and the earthquake spectra special issue", Earthq. Spectra, 33(S1), S1-S20. https://doi.org/10.1193/120817EQS252M.
  22. Lu, Y. and Panagiotou, M. (2014), "Characterization and representation of near-fault ground motions using cumulative pulse extraction with wavelet analysis", Bull. Seismol. Soc. Am, 104(1), 410-426. https://doi.org/10.1785/0120130031.
  23. Martin, S.S., Hough, S.E. and Hung, C. (2015), "Ground motions from the 2015 Mw 7.8 Gorkha, Nepal, earthquake constrained by a detailed assessment of macroseismic data", Seismol. Res. Lett, 86(6),1524-1532. https://doi.org/10.1785/0220150138.
  24. Mazza, F. (2018), "Seismic demand of base-isolated irregular structures subjected to pulse-type earthquakes", Soil Dyn. Earthq. Eng., 108, 111-129. https://doi.org/10.1016/j.soildyn.2017.11.030.
  25. Pan, Y., Wang, X., Guo, R. and Yuan, S. (2018), "Seismic damage assessment of Nepalese cultural heritage building and seismic retrofit strategies: 25 April 2015 Gorkha (Nepal) earthquake", Eng. Fail. Anal, 87, 80-95. https://doi.org/10.1016/j.engfailanal.2018.02.007.
  26. Quaranta, G. and Mollaioli, F. (2019), "Analysis of near-fault pulse-like seismic signals through Variational Mode Decomposition technique", Eng. Struct., 193, 121-135. https://doi.org/10.1016/j.engstruct.2019.05.003.
  27. Rupakhety, R., Olafsson, S. and Halldorsson, B (2017), "The 2015 Mw 7.8 Gorkha Earthquake in Nepal and its aftershocks: analysis of strong ground motion", Bull. Earthq. Eng., 15, 2587-2616. https://doi.org/10.1007/s10518-017-0084-z.
  28. Sapkota, S.N., Bollinger, L., Klinger, Y., Tapponnier, P., Gaudemer, Y. and Tiwari, D. (2013), "Primary surface ruptures of the great Himalayan earthquake in 1934 and 1255", Nat. Geosci., 6, 71-76. https://doi.org/10.1038/NGEO1669.
  29. Shahi, S.K. and Baker, J.W. (2014), "An efficient algorithm to identify strong-velocity pulses in multicomponent ground motions", Bull. Seismol. Soc. Am., 104(5), 2456-2466. https://doi.org/10.1785/0120130191.
  30. Sharma, B., Chingtham, P., Sharma, V., Kumar, V., Mandal, H.S. and Mishra, O.P. (2017), "Characteristic ground motions of the 25th April 2015 Nepal earthquake (Mw 7.9) and its implications for the structural design codes for the border areas of India to Nepal", J. Asian Earth. Sci., 133, 12-23. https://doi.org/10.1016/j.jseaes.2016.07.021.
  31. Sharma, K. and Deng, L. (2019), "Reconnaissance report on geotechnical engineering aspect of the 2015 Gorkha, Nepal, earthquake", J. Earthq. Eng., 23(3), 1-26. https://doi.org/10.1080/13632469.2017.1342299.
  32. Sharma, K., Deng, L. and Noguez, C.C. (2016), "Field investigation on the performance of building structures during the April 25, 2015, Gorkha earthquake in Nepal", Eng. Struct., 121, 61-74. https://doi.org/10.1016/j.engstruct.2016.04.043.
  33. Shrestha, R., Li, X., Yi, L. and Mandal, A.K. (2020), Seismic damage and possible influencing factors of the damages in the Melamchi tunnel in Nepal due to Gorkha earthquake 2015, Geotech. Geol. Eng., 38(5), 5295-5308. https://doi.org/10.1007/s10706-020-01364-9.
  34. Shrestha. S., Shrestha, B., Shakya, M. and Maskey, P.N. (2017), "Damage assessment of cultural heritage structures after the 2015 Gorkha, Nepal, earthquake: a case study of Jagannath Temple", Earthq. Spectra, 33(S1), S363-S376. https://doi.org/10.1193/121616eqs241m.
  35. Soureshjani, O.K. and Massumi, A. (2019), "Effect of near and far-field earthquakes on RC bridge with and without damper", Earthq. Struct, 17(6), 533-543. https://doi.org/10.12989/eas.2019.17.6.533.
  36. Takai, N., Shigefuji, M., Rajaure, S., Bijukchhen, S., Ichiyanagi, M., Dhital, M.R. and Sasatani, T. (2016), "Strong ground motion in the Kathmandu Valley during the 2015 Gorkha, Nepal, earthquake", Earthq. Planets Space, 68(1), 1-10. https://doi.org/10.1186/s40623-016-0383-7.
  37. Tallett-Williams, S., Gosh, B., Wilkinson, S., Fenton, C., Burton, P., Whitworth, M., Datla, S., Franco, G., Trieu, A., Dejong, M., Novellis, V., White, T. and Lloyd, T. (2016), "Site amplification in the Kathmandu Valley during the 2015 M7.6 Gorkha, Nepal earthquake", Bull. Earthq. Eng., 14, 3301-3315. https://doi.org/10.1007/s10518-016-0003-8.
  38. United States Geological Survey (2016), .
  39. Zhai, C., Chang, Z., Li, S., Chen, Z.Q. and Xie L. (2013), "Quantitative identification of near-fault pulse-like ground motions based on energy", Bull. Seismol. Soc. Am., 103(5), 2591-2603. https://doi.org/10.1785/0120120320.
  40. Zhai, C., Li, C., Kunnath, S. and Wen, W. (2018), "An efficient algorithm for identifying pulse-like ground motions based on significant velocity half-cycles", Earthq. Eng. Struct. Dyn., 47(3), 757-771. https://doi.org/10.1002/eqe.2989.