Database of Dynamic Soil Properties for Most Iraq Soils

Authors

  • Qassun Sa'ad Al-Deen Mohammed Shafiqu University of Al-Nahrain/College of Engineering/Civil Engineering dept.,Ass.prof. Dr., Iraq
  • Murtadha A. Abdulrassol University of Al-Nahrain/College of Engineering/Civil Engineering dept., B.Sc., Baghdad, Iraq

Keywords:

Earthquakes, seismic activity zone, Iraq, soil properties, compression wave velocities, ear wave velocities, geotechnical earthquake engineering.

Abstract

Earthquakes in Iraq has become a better knowledge after 1900 for amounts ranged from 2.7 to 7.2 ML within geographical boundary of the seismicity map of Iraq with a majority of crustal depth shocks ,there is a general characteristic and an increase in seismic activity in Iraq from the south to north and from west to east. Due to the location of Iraq on one side of the Arabian tectonic plate which earthquakes existed.The analysis of foundation vibrations and geotechnical earthquake engineering problems in civil engineering requires characterization of dynamic soil properties using geophysical methods. Dynamic structural analysis of the superstructures also requires knowledge of the dynamic response of the soil-structure, which, in turn relies on dynamics soil properties. The main objective in this study is to prepare a geotechnical and geophysics properties to build a database for different zones in Iraq (North, Eastern North, Western North, Middle, West, East, Western south, Eastern south and South) and different soils. From the data collected it has been observed that the average shear wave velocities were ranged from (274-1467) m/s in the North, (145-733) m/s in the Eastern North, (292-701) m/s in the Western North , (111-507) m/s in the Middle, (372-398) m/s in the East, (257,1164)m/s in the West, (198, 659) in the Western South, (111,420) in the Eastern South, (102,627) in the South of Iraqand The average compression wave velocities were ranged from (8077-2902) m/s in the North, (514-2606) m/s in the Eastern North, (714-1335) m/s in the Western North , (322-1544) m/s in the Middle, (976-1076) m/s in the East, (730,2835)m/s in the West, (198, 1659) in the Western South, (377,1167) in the Eastern South, (294,1811) in the South of Iraq.

References

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[2]. Hardin, B.O. &Drnevich, V.P. (1972a) “Shear modulus and damping in soils", Measurement and parameter effects”. Journal of Soil Mechanics and Foundation.
[3]. Qassun S. M. Shafiqu & Ruba H. Sa'ur (2017) "Data base of some Iraqi Soil", Iraq Journal of Engineering, Vol 22 July 2016, NO. 7
[4]. ASTM D 1586 – 99, Penetration Test and Split-Barrel Sampling of Soils.
[5]. ASTM D 3080 / D3080M-98, Direct Shear Test
[6]. ASTM D 2166-00, Unconfined Compressive Strength of Cohesive Soil.
[7]. Doug Crice (2002) "Borehole Shear-Wave Surveys for Engineering Site Investigations" Geostuff 19623 ViaEscuela Drive Saratoga, CA 95070 USA.
[8]. Department of Defense Handbook, 1997, Soil Dynamics and Special Design Aspects, MIL-HDBK-1007/3.
[9]. FEMA, 2010, Earthquake-Resistant Design Concepts, an Introduction to the NEHRP Recommended Seismic Provisions for New Buildings and Other Structures, P-749 / Dec. 2010.
[10]. Eurocode 8, 2004, Design of Structures for Earthquake Resistance, Part 1 , The European Union Per Regulation 305/2011, Directive 98/34/EC, Directive 2004/18/EC.
[11]. The Preliminary Draft of Iraqi Seismic Code, 303, submitted to Central Organization for Standardization and Quality Control COSQC, 2013.

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Published

2017-11-05

How to Cite

Shafiqu, Q. S. A.-D. M., & A. Abdulrassol, M. (2017). Database of Dynamic Soil Properties for Most Iraq Soils. American Scientific Research Journal for Engineering, Technology, and Sciences, 37(1), 230–254. Retrieved from https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/3455

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