Modelling of Turbo Generator Foundation using FEM to Study the Isolation Effect on the System

Abstract

Design of Frame Foundation is relatively a complex task compared to any other foundation. There are many parameters that influence machine-foundation response. The stiffness of Frame Structure plays a vital role in designing turbo generator foundation. Individual vibration characteristics of columns, beams, cantilever projections etc., besides being part of the system, have also been found to significantly influence the response. Design and analysis of turbo generator concrete pedestal with both basic principles and Finite Elements analytical method using SAP2000 program is presented to compare the results of the two methods. And the obtained results in this study used to determine how using base-isolators lead to a control of the dynamic properties of the foundation, and the results shows that isolators could resist up to90% of dynamic loads generated by turbo generator machines. This calculation was done also by mathematical and finite element methods to compare the results which shows a very good results.

Country : Egypt

1 Mohamed Adel2 Yassr Alzeni3 Ahmed Ghalab

  1. M.Sc. Graduate Student, Structural Engineering Dept., Faculty of Engineering, Ain Shams University, Cairo, Egypt
  2. Assistant Professor, Structural Engineering Dept., Faculty of Engineering, Alexandria University, Alexandria, Egypt
  3. Professor of concrete structures, Structural Engineering Dept., Faculty of Engineering, Ain Shams University, Cairo, Egypt

IRJIET, Volume 3, Issue 5, May 2019 pp. 31-41

References

  1. Bhatia, K. G. (2008). Foundations for industrial machines and earthquake effects.
  2. Prakash, S., &Puri, V. K. (2006). Foundations for vibrating machines. Journal of structural Engineering, 33(1), 13-29.
  3. Nawrotzki, P., Hüffmann, G., &Uzunoglu, T. (2008). Static and dynamic analysis of concrete turbine foundations. Structural Engineering International, 18(3), 265-270.
  4. Jayarajan P., Kouzer K.M. (2014). Dynamic analysis of Turbo-generator Machine Foundation. Journal of Civil Engineering and Environmental Technology.
  5. Adhikari (2003). S. Turbo generator foundation II.
  6. IS 456. (2000). Plain and reinforced concrete–code of practice. Indian Standard, ICS, 91.100. 30, New Delhi.
  7. ACI Committee, & International Organization for Standardization. (2008). Building code requirements for structural concrete (ACI 318-08) and commentary. American Concrete Institute.
  8. IS 2974-1 (1982). Code of practice for design and construction of machine foundations.
  9. IOf, S. (2009). ISO 10816-7: Mechanical vibration—evaluation of machine vibration by measurements on non-rotating parts.
  10. DIN 4024-1 (1988). Machine foundations; flexible structures that support machines with rotating elements.
  11. DIN 4024-2 (1988). Machine foundations; rigid foundations for machinery with periodic excitation.