Mahmood Yahyai  (PhD Structural Engineering)

    Associate Professor

    Civil Engineering Department

    K.N.Toosi University of Technology

    P. O. Box: 15875-4416, TEHRAN, IRAN



    TEL: +98-21-8877-0006

    FAX: +98-21-8873-3515







Strength of Materials

Strength of Materials Laboratory

Analysis of Structures

Principle of Earthquake Engineering

Principal Wind and Earthquake Engineering


Theory of Elasticity and Plasticity

Wind Engineering

Structural Dynamics (I)

 Structural Dynamics (II)


Invited Lecture

"Structure of Iranian Land mark" Architecture of Iran University of British Columbia, Vancouver, Canada 2009  







Research carried out during sabbatical: "Retrofitting of Cracked Composite Beams in Bridges Due to Fatigue Loading"





1.      "Wind Load on Structures", K.N. Toosi University, Publication Bureau, March, 2000.

2.      "Theory of Elasticity and Modeling of Material Behavior",   K.N. Toosi University, Publication Bureau 2006




1.      Mahmood Yahyai, "Wind Loads on Tall Chimneys", Research Report NO. 32/1372, K.N. Toosi University of Technology, Tehran, 1995.

2.      "Control of  Tall Buildings using Tuned Mass Dampers" Research Report NO 3634, K.N. Toosi University of Technology, Tehran, 2004.

3.      "Cable Stayed Suspension Roofs "Research Report NO. 1525, K.N. Toosi University of Technology, Tehran, 1995.




  1. Saedi Daryan A, Yahyai M, " Behavior of bolted top-seat angle connections in fire " Journal of Constructional Steel Research  2009 ; 65 : 531-541

  2. Mahmood Yahyai and S.R. Asad Sajadi " Effect of Plate Arrangment on Behavior of Buttress Connection" , Journal of Faculty of Engineering, Vol. 36, No. 3 Summer 2008

  3. Yahyai M , Mirtaheri M , Mahoutian M , Saedi Daryan A, Assareh M , Soil Structure Interaction between Two Adjacent Buildings under Earthquake Load , American J. of Engineering and Applied Sciences , 2008 ,  1 (2): 121-125

  4. Mahmood Yahyai, Bahram Rezaeibana and Amir Saedi Daryan "Nonlinear Seimic Response of Milad Tower Using Finite Element Model" The Struct. Design of Tall Building and Special Buildings, Wiely interscience 17,2008

  5. Yahyai M, Sajjadi R, Study the hysteretic behavior of connection, Modares Technical and engineering journal, No.33, Fall 2008

  6. Yahyai M. ,  S. R. Asad Sajadi  " Hysteresis Behavior of Buttress Connection" Modares Technical and Engineering No. 33, Fall 2008

  7. Yahyai M, Moradi M, Behavior level of asymmetric braced steel structures designed according to the third 2800 seismic provision, Education and technology journal, second year, second issue, no 1, 2007

  8. Sadrnejad A, Chaboki, Yahyai M, Continuous nonlinear model of carbon nano tubes using finite element method, international engineering journal, 2007

  9. Goudarzi A, Yahyai M, Nonlinear analysis of thick beams with sine wave web, Amirkabir Journal, 2007

  10. Ehsan Minaee and Mahmood Yahyai, "Nonlinear Dynamic Analysis of Asymmetric Buildings Using SST Surfaces", Journal of Department of Engineering, Tehran University

  11. Reza Soleimanpour, Mahmmod Yahyai,and Mostafa Barghi", Retrofitting of Existing steel Buildings using ADAS Dampers" Journal of Modares Technical and Engineering

  12. Saedi Daryan A, Yahyai M, �Behaviour of Welded Top-Seat Angle Connections Exposed to Fire �� accepted in Fire Safety Journal.

  13. Saedi Daryan A, Yahyai M", Modeling of Bolted Angle Connections in Fire" accepted in Fire Safety Journal

  14. Minaei E, Yahyai M, Nonlinear dynamic analysis of asymmetric structures using SST levels, technical faculty journal, 40, No. 5, 2006

  15. Soleymanpour R, Yahyai M,  Barghi B, Retrofit of existing steel structures wuth ADAS dampers, Modares Technical and engineering journal, 2006

  16. Shahin K. Rassouli and Mahmood Yahyai, "Control of Response of Structures with Passive and Active Tuned Mass Dampers", The Structural Design of Tall Buildings, John Wiley & Sons, 11, 1-14, 2002

  17. Mahmood Yahyai and M. Behnia, " Estimation of Hydrodynamic   Pressures During Earthquake in Time Domain Using B.E.M., International Journal of Engineering Science No. 2, Vol 12, 127-141 2001

  18. Behnia M, Yahyai M, 3D evaluation of hydrodynamic pressure on dams using finite boundary method, International journal of engineering sciences of Elmosanat, 2001

  19. Mahmood Yahyai, Prem Krishna, Krishen, "Aerodynamic Interference in Tall Rectangular Buildings", Journal of Wind Engineering and Industrial Aerodynamics, 1992.


  1. Rezaifar A, Yahyai M, Numerical study of the behavior of steel beams with semi rigid connections at high temperature, 5th national congress on civil engineering, Iran, 2010

  2. Soleymanpour, Yahyai M, Barghi M, Retrofitting of existing steel buildings using adas dampers, international conference on urban earthquake engineering, 2009

  3. Yahyai M, Saedi Daryan A, Study the behavior of welded connections in fire, 4th national congress on civil engineering, Iran, 2008

  4. Yahyai M, Asad Sajadi A.S, Retrofitting of steel Building using Buttress Connection, international conference of Protect 2007, 2007

  5. Seyed Morteza Kia, Mahmood Yahyai "Relationship Between Local Golobal Ductility in Steel Moment Resisting Frames" 13th World Conference on Earthquake Engineering,  Vancouver, Canada, Aug.1-6, 2004

  6. Kambiz Shirzadi, Mahmood Yahyai, " Seismic Evaluation of Existing Concrete Structures", First Iranian Congress on Civil Engineering, May 11-13, 2004

  7. Mahmood Yahyai, Syrus Sadr Nafisi, " Nonlinear Behavior of Steel Frams with Knee Bracing", 4th inter. Conf. on Seismology and Earthquake Engineering, 12-14 May 2003, Tehran, Iran.

  8. Mahmood Yahyai, Behzad Gholfaei Zadeh "Repair and Retrofitting of Damaged RC Beams during earthquake",4th inter. Conf. on Seismology and Earthquake Engineering, 12-14 May 2003, Tehran, Iran.

  9. Mahmood Yahyai, "Nonlinear analysis of Cable Stayed Roofs Under Impact and Wind Loading", National Conference on Space Structures, University of Tehran, April, 2000

  10. Mahmood Yahyai, "Wind Loads on Chimneys", International Symposium on Shell and Spatial Structures, Proceedings, IASS Singapore, Nov., 1997

  11. Mahmood Yahyai, "Wind-Induced Response of Cooling Towers", International Colloquium on Computation of Shell and Spatial Structures, IASS Taipei, Taiwan, 1997

  12. Mahmood Yahyai, "Wind-Induced Response of Towers", 7-th International Conference on Computing in Civil and Building Engineering (ICCCBE), Korea, 1997

  13. Mahmood Yahyai and M. Mehdi Baik, "Aerodynamic Analysis of Self-Supporting Towers", Fourth International Conference on Civil Engineering, Tehran, April, 1997

  14. Mahmood Yahyai, "The Use of Composite Materials in Marine Structures", Asia-Pacific Conference on Offshore Systems � Mobile and Floating Structures, Kuala Lumpur, Dec., 1996

  15. Mahmood Yahyai and N. Shaker Montazer, "Structural Optimization of Skewed Girder Bridges", Second International Conference on Bridges, Tehran, Sept., 1996

  16. Mahmood Yahyai, P. K. Pande and Prem Krishna, "Interference Effects in Tall Buildings", Experimental Determination of Wind Loads on Structures, New Delhi, 1991.