IDEAS home Printed from https://ideas.repec.org/a/spr/nathaz/v106y2021i3d10.1007_s11069-021-04543-w.html
   My bibliography  Save this article

Site response analysis for deep and soft sedimentary deposits of Dhaka City, Bangladesh

Author

Listed:
  • Md. Zillur Rahman

    (University of Dhaka
    Okanagan Campus)

  • Sumi Siddiqua

    (Okanagan Campus)

  • A. S. M. Maksud Kamal

    (University of Dhaka)

Abstract

The ground motion intensity of an earthquake is significantly changed when seismic waves propagate from the bedrock to the near-surface soft geological materials. The ground where the shear wave velocity (Vs) exists greater than 760 m/s is generally considered as bedrock. As a common practice in the last three decades, the surface ground motion of a soil site is estimated by multiplying the bedrock motion with the site coefficient that is empirically determined from the time-averaged shear wave velocity in the top 30 m (Vs30) of the site. The site coefficient is defined as the ratio of the ground motion intensity at the ground surface to that of the bedrock. If the bedrock of a site exists at a depth of greater than 30 m, the site effect from the depth of 30 m to the bedrock is not accounted in the Vs30-based site coefficient. In Dhaka City, the minimum depth of the bedrock is approximately 175 m. Therefore, the use of the Vs30-based site coefficient to estimate the surface ground motion is not appropriate for the soft and deep sedimentary deposits of this city. In this study, site response analysis using the Vs30-based site coefficient, linear, equivalent-linear, and nonlinear approaches has been performed to estimate the surface ground motion at different sites of Dhaka City and to compare the results of different approaches. It is observed that the surface ground motion is decreased with increasing the depth of the bedrock due to low shear strain and viscous damping in the soft sedimentary deposits.

Suggested Citation

  • Md. Zillur Rahman & Sumi Siddiqua & A. S. M. Maksud Kamal, 2021. "Site response analysis for deep and soft sedimentary deposits of Dhaka City, Bangladesh," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 106(3), pages 2279-2305, April.
    • Handle: RePEc:spr:nathaz:v:106:y:2021:i:3:d:10.1007_s11069-021-04543-w
    DOI: 10.1007/s11069-021-04543-w
    as

    Download full text from publisher

    File URL: http://link.springer.com/10.1007/s11069-021-04543-w
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.
    File URL: https://libkey.io/10.1007/s11069-021-04543-w?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. L. Govindaraju & S. Bhattacharya, 2012. "Site-specific earthquake response study for hazard assessment in Kolkata city, India," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 61(3), pages 943-965, April.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Ali Silahtar, 2023. "Evaluation of local soil conditions with 1D nonlinear site response analysis of Arifiye (Sakarya District), Turkey," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 116(1), pages 727-751, March.
    2. Swaraj Chowdhury & Nihar Ranjan Patra, 2023. "Influence of geogrid reinforcement on dynamic characteristics and response analysis of Panki pond ash," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 119(1), pages 435-461, October.
    3. Abul Kashem Faruki Fahim & Md. Zillur Rahman & Md. Shakhawat Hossain & A. S. M. Maksud Kamal, 2022. "Liquefaction resistance evaluation of soils using artificial neural network for Dhaka City, Bangladesh," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 113(2), pages 933-963, September.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. P. Anbazhagan & Athul Prabhakaran & H. Madhura & Sayed S. R. Moustafa & Nassir S. N. Al-Arifi, 2017. "Selection of representative shear modulus reduction and damping curves for rock, gravel and sand sites from the KiK-Net downhole array," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 88(3), pages 1741-1768, September.
    2. Kaustav Chatterjee & Deepankar Choudhury, 2013. "Variations in shear wave velocity and soil site class in Kolkata city using regression and sensitivity analysis," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 69(3), pages 2057-2082, December.
    3. Bhavesh Pandey & Ravi Jakka & Ashok Kumar, 2016. "Influence of local site conditions on strong ground motion characteristics at Tarai region of Uttarakhand, India," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 81(2), pages 1073-1089, March.
    4. Han-Saem Kim & Choong-Ki Chung, 2016. "Integrated system for site-specific earthquake hazard assessment with geotechnical spatial grid information based on GIS," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 82(2), pages 981-1007, June.
    5. Bhavesh Pandey & Ravi S. Jakka & Ashok Kumar, 2016. "Influence of local site conditions on strong ground motion characteristics at Tarai region of Uttarakhand, India," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 81(2), pages 1073-1089, March.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:spr:nathaz:v:106:y:2021:i:3:d:10.1007_s11069-021-04543-w. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.springer.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.