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Earthquake site response study of Accra area, Ghana

  • J. K. Ayetey
  • M. B. Andoh
Article

Summary

There is no study which relates the geology and engineering soils characteristics with the earthquake damage potential of Accra area. This work studies these factors and attempts an engineering soils map which then serves as the base for seismic risk map showing damage degree zones of the Accra area. The maps could serve as a basis for land-use planning and give engineers a good idea about what to expect at a project site prior to site investigation. Information is obtained on the basis of which together with actual site investigation work should lead to design and construction of structures for appropriate areas to help lessen the earthquake-related loss of life and damage to property in an earthquake.

Keywords

Sandstone Shale Seismic Intensity Intensity Increment Bedrock Topography 

Etude du comportement de la zone d'Accra (Ghana) en cas de tremblement de terre

Résumé

Aucune étude n'avait été réalisée sur les relations entre la géologie et les caractéristiques géotechniques des sols et les dommages potentiels en cas de tremblement de terre dans la zone d'Accra. Le présent travail étudie ces facteurs et présente un essai de carte géotechnique du site qui sert ensuite de base à une carte des risques sismiques de la région d'Accra. Ces cartes peuvent servir de support pour la planification de l'occupation des sols et aussi donner aux ingénieurs les éléments nécessaires lors de la réalisation de projets divers. Ces informations et les études de terrain détaillées réalisées à l'occasion de chaque projet devraient permettre une meilleure conception et une construction de structures susceptibles de réduire les dommages subis en cas de tremblement de terre.

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Copyright information

© International Assocaition of Engineering Geology 1988

Authors and Affiliations

  • J. K. Ayetey
    • 1
  • M. B. Andoh
    • 1
  1. 1.Geotechnical Engineering DivisionBuilding & Road Research Institute (C.S.I.R.), U.S.T.KumasiGhana

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