Near-surface foundation level assessment from seismic measurements: a case study of north Jeddah City, Saudi Arabia

Near-surface seismic measurements, along with relevant geotechnical methods, have become important techniques for delineating the elastic coefficients and geotechnical parameters of shallow foundations. In the north Jeddah expansion zone, shallow seismic measurements at 76 sites have been carried ou...

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Bibliographic Details
Published in:Arabian journal of geosciences 2020-03, Vol.13 (5), Article 233
Main Authors: Mogren, Saad, Aldahri, Maher, Abdelrahman, Kamal, Zahran, Hani
Format: Article
Language:English
Subjects:
Bearing capacity
Bulk modulus
Coefficients
Contouring
Earth and Environmental Science
Earth science
Earth Sciences
Foundation construction
Geotechnical engineering
Mechanical properties
Modulus of elasticity
Original Paper
P waves
S waves
Sediments
Seismic velocities
Seismic waves
Shallow foundations
Shear modulus
Shear wave velocities
Wave velocity
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Summary:Near-surface seismic measurements, along with relevant geotechnical methods, have become important techniques for delineating the elastic coefficients and geotechnical parameters of shallow foundations. In the north Jeddah expansion zone, shallow seismic measurements at 76 sites have been carried out to estimate both the P- and S-wave velocities for near-surface sediments. These data have been processed where the results revealed a three-layered ground model that reaches to 30 m depth with varying velocities and thicknesses. Then, the elastic coefficients such as Young’s modulus, bulk modulus, shear modulus, ultimate bearing capacity, and allowable bearing capacity have been assessed based on the estimated seismic wave velocities. It can be concluded that bearing capacity is closely related to shear wave velocity and shear modulus. Comparing our results with the published safe ranges of allowable bearing capacities, it is recommended that the first layer in the western zone as well as the second layer is the most suitable areas for constructing safe engineering foundations in the area of interest. Additionally, the best locations of these foundations can be easily identified from contouring maps.
ISSN:1866-7511
1866-7538
DOI:10.1007/s12517-020-5233-z