Determination of elastic moduli and geotechnical parameters of the upper soil layer using ultrasonic waves in al-Jadiriyah area-University of Baghdad-Iraq
Other Title(s)
قياس و تحميل معاملات المرونة و المعاملات الجيوتكنيكة لطبقة التربة العليا باستخدام الموجات فوق الصوتية في منطقة الجادرية-جامعة بغداد-العراق
Author
Khurshid, Salman Zayn al-Abidin
Source
Issue
Vol. 57, Issue 4C (31 Dec. 2016), pp.2909-2921, 13 p.
Publisher
University of Baghdad College of Science
Publication Date
2016-12-31
Country of Publication
Iraq
No. of Pages
13
Main Subjects
Earth Sciences, Water and Environment
Topics
Abstract EN
Analysis and determination of some of the elastic moduli and other geotechnical parameters in the campus of the University of Baghdad performed by using New Sonic Viewer in the field to measure (Vp) and (Vs) velocities as well as the density of the upper soil inside the campus.
Seventeen profiles were selected each of (10) m.
length distributed randomly inside the university campus to evaluate the top soil properties in addition to the soil profile.
The ultrasonic waves showed two layers of the soil with different velocities of (Vp) and (Vs).
The velocities of p-wave of the first layer ranged from (288-642) m/sec.
On other hand the velocities of shear wave (Vs) in the same layer ranged from (88-193) m/sec.
In the second layer the velocities of p-wave ranged from (681-972) m/sec., and the velocities of shear wave ranged from (327-463) m/sec.Depending upon the value of (Vs) and according to Caltrans soil types, these two layers were considered as soft and stiff soils of types ( E and D) respectively.
The mean depth of the first layer in the area is (1.91) m.
The densities of the first layer ranged from (1743-1999) Kg/m3.
The values of Poisson's ratio, Young's modulus, Shear modulus, Lame's constant, Bulk modulus and Compressibility are also determined as well as some of geotechnical properties as earth lateral pressure at rest (KO), Concentration index, Ultimate bearing capacity, Material index, and the empirical relation was used to calculate (N) values of the standard penetration test (SPT) from shear wave velocities and its value ranged for the first layer from (2-35) b/30 cm.
and for second layer the (N) values ranged from (25-45) b/cm., as well as the relationship between the most important geotechnical and elastic modulus with their equations on each graph.
American Psychological Association (APA)
Khurshid, Salman Zayn al-Abidin. 2016. Determination of elastic moduli and geotechnical parameters of the upper soil layer using ultrasonic waves in al-Jadiriyah area-University of Baghdad-Iraq. Iraqi Journal of Science،Vol. 57, no. 4C, pp.2909-2921.
https://search.emarefa.net/detail/BIM-733661
Modern Language Association (MLA)
Khurshid, Salman Zayn al-Abidin. Determination of elastic moduli and geotechnical parameters of the upper soil layer using ultrasonic waves in al-Jadiriyah area-University of Baghdad-Iraq. Iraqi Journal of Science Vol. 57, no. 4C (2016), pp.2909-2921.
https://search.emarefa.net/detail/BIM-733661
American Medical Association (AMA)
Khurshid, Salman Zayn al-Abidin. Determination of elastic moduli and geotechnical parameters of the upper soil layer using ultrasonic waves in al-Jadiriyah area-University of Baghdad-Iraq. Iraqi Journal of Science. 2016. Vol. 57, no. 4C, pp.2909-2921.
https://search.emarefa.net/detail/BIM-733661
Data Type
Journal Articles
Language
English
Notes
Text in English ; abstracts in English and Arabic.
Record ID
BIM-733661