Numerical analysis of a concrete foundation under a combination of a dynamic and a seismic load

Authors

  • Abduljabbar Adel Allawi Al-Salam College, Baghdad, Iraq
  • Qassun S. Mohammed Al-Nahrain University Baghdad, Iraq

DOI:

https://doi.org/10.31026/j.eng.2022.02.02

Abstract

Improving in assembling technology has provided machines of higher evaluation with better resistances and managed behavior. This machinery led to remarkably higher dynamic forces and therefore higher stresses. In this paper, a dynamic investigation of rectangular machine diesel and gas engines foundation at the top surface of one-layer dry sand with various states (i.e., loose, medium and dense) was carried out. The dynamic investigation is performed numerically by utilizing limited component programming, PLAXIS 3D. The soil is accepted as flexible totally plastic material submits to Mohr-Coulomb yield basis. A harmonic load is applied at the foundation with amplitude of 10 kPa at a frequency of (10, 15 and 20) HZ and seismic load is applied with acceleration – time input of earthquake hit Halabjah city north of Iraq. A parametric statement is completed to evaluate the effect of changing the relative density, embedded depth and frequency of the machine. It has been noticed that the relative density plays an important role in the resistance of settlement, as it increases the resistance of the soil to the applied loads because the dense soil is stiffer. While total stress and displacement of different relative density decrease at the time when increasing the foundations' embedding, the ratio was (15%) at the depths (Df=0 and Df=2). In addition, it has been noticed that there decrease of displacement when the frequency value changes from (10 to 20) Hz.  

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References

• Abd Al-Kaream, K. W., 2013. The dynamic behavior of machine foundation on saturated sand. M. Sc. Thesis, Building and Construction Engineering Department, University ….

• Abdul-Kaream, K. W. (n.d.). Effect of Uncertainties of Soil Shear Strength Parameters on the Reliability of Machine Foundations A.

• Al-Ameri, A. F. I., 2014. Transient and steady state response analysis of soil foundation system acted upon by vibration. University of Baghdad, Iraq.

• Al-Azawi, T. K., Al-Azawi, R. K., and Al-Jaberi, Z. K., 2006. Stiffness and Damping Properties of Embedded Machine Foundations, Journal of Engineering, 12(2).

• Al-Mosawi, M. J., Fattah, M. Y., and Al-Ameri, A. F. I., 2015. Effect of saturation of sandy soil on the displacement amplitude of soil foundation system under vibration. Journal of Engineering, 21(2), 20–36.

• Boumekik, A., BELHADJ, M. S., and Meribout, F., 2010. Experimental analysis of the dynamic stress distribution at the soil foundation interface.

• Brinkgreve, R. B. J., Engin, E., and Swolfs, W. M., 2013. PLAXIS 3D 2013 user manual. Plaxis Bv, Delft.

• Fattah, Mohammed Y, Salim, N. M., and Al-Shammary, W. T., 2014. Numerical Analysis of Machine Foundation Resting on Saturated Sandy Soil. Engineering and Technology Journal, 32(10 Part (A) Engineering).

• Fattah, Mohammed Y, Salim, N. M., Al-Shammary, W. T., (2015. Effect of embedment depth on response of machine foundation on saturated sand. Arabian Journal for Science and Engineering, 40(11), 3075–3098.

• Fattah, Mohammed Yousif, Al-Mufty, A. A. A.-A., and Al-Badri, H. T., 2007. Design Charts For Machine Foundations. Journal Of Engineering, 13(4).

• Hadi, K., and Al-Helo, I., 2015. Dynamic Behavior of Machine Foundation on Two-Layer Soil System Introduction. In Journal of Engineering and Development (Vol. 19, Issue 1).

• Hanash, A. A. A., Ahmed, M. D., and Said, A. I., 2020. Effect of Embedment on Generated Bending Moment in Raft Foundation under Seismic Load. In Journal of Engineering (Vol. 26, Issue 4, pp. 161–172). https://doi.org/10.31026/j.eng.2020.04.11

• KAREAM, K. W. A., FATTAH, M. Y., and KHALED, Z. S. M., 2020. Response of Circular Machine Foundation Resting on Sandy Soil to Harmonic Excitation. Journal of Engineering Science and Technology, 15(2), 831–845.

• Mitchell, J. K., and Soga, K., 2005. Fundamentals of soil behavior (Vol. 3). John Wiley & Sons New York.

• Piyush K. Bhandari, A. S., 2014. (n.d.). Piyush K. Bhandari, Ayan Sengupta (2014). Dynamic Analysis Of Machine Foundation.Assistant Professor, Dept of Civil Engg, PDVVP COE, Ahmednagar, Maharashtra, India.

• Srinivasulu, P., and Vaidyanathan, G. V., 1990. Machine foundations. McGraw-Hill Publishing Company Limited.

• نور خالد ادريس , (2020) , تحليل وتصميم اسس المكائن باستخدام الطرق الرياضية والعددية , علوم الهندسة المدنية ميكانيك التربة وهندسة الاسس , جامعة الموصل , العراق.

How to Cite

“Numerical analysis of a concrete foundation under a combination of a dynamic and a seismic load” (2022) Journal of Engineering, 28(2), pp. 18–39. doi:10.31026/j.eng.2022.02.02.

Publication Dates

Published

2022-02-01