Parametric study and comparison of overturning moment and base shear of tall buildings under earthquake and along-wind loads

Document Type : Research Article


1 Department of civil engineering, Islamic Azad University, Khormouj Branch, Khormouj, Iran.

2 Msc.student in structural engineering, Khormouj Branch


Increasing the population of large cities and the lack of construction area have increased tall buildings. In the present article, the overturning moment and base shear due to the along-wind and earthquake loads have been compared for tall buildings. The buildings are assumed to be located in Tehran city on type 2 soil and the structure is regarded as a vertical cantilever beam. The along-wind and earthquake loads are computed using the gust-loading-factor method and the linear spectral approach, respectively. First, an example of the 120-m high building is presented and evaluated, and then, the effect of the height and aspect ratio parameters are examined in the ranges 80 and 200-m, and 5 to 10, respectively, for the two square and circular cross-sections. For the primary example, the earthquake overturning moment and base shear were dominated respectively by the first and second vibration modes. For the square and circular sections, the ratio of wind-induced overturning moment to the earthquake effect were 1.1 and 0.81, respectively. For the parametric study, the wind and seismic overturning moments were equal to each other at the specific values of the studied parameters, and the wind effects were dominant for the higher values of these parameters. For instance, for the square cross-section, the equal point of the overturning moment and base shear were respectively 110m and 175m. Finally, by increasing the height and aspect ratio, the wind forces were dominant.


Main Subjects

[1] A.G. Davenport, Gust loading factors, Journal of the Structural Division, ASCE, 93 (1967) 11-34.
[2] B.J. Vickery, On the reliability of gust loading factors, Proceedings of technical meeting concerning wind loads on buildings and structures, 30 (1970) 296–312.
[3] G. Solari, Gust buffeting. I: Peak wind velocity and equivalent pressure, Journal of Structural Engineering, 119(2) (1993a) 365–382.
[4] G. Solari, Gust buffeting. II: Dynamic along-wind response, Journal of Structural Engineering, 119(2) (1993b) 383–397.
[5] H. Eimani, N. Khodaie, Parametric study on the Gust Loading Factor (GLF) of the along-wind loads on tall buildings, in:  15th Civil Engineering Students Conference, Urmia University, Urmia, Iran, 2014.
[6] T. Kijewski, and A. Kareem, Dynamic wind effects: A comparative study of provisions in codes and standards with wind tunnel data, Wind and Structures an International Journal, 1(1) (1998) 77–109.
[7] Y. Zhou, T. Kijewski, A. Kareem, Along-wind load effects on tall buildings: Comparative study of major international codes and standards, Journal of Structural Engineering, ASCE., 128 (2002) 788–96.
[8] D.K. Kwon and A. Kareem, Comparative study of major international wind codes and standards for wind effects on tall buildings, Engineering Structures, 51 (2013) 23–35.
[9] M.M. Ali, K.S. Moon, Structural Developments in Tall Buildings: Current Trends and Future Prospects, Architectural Science Review, 50(3) (2007) 205-223.
[10] A. Sharma, H. Mittal, A. Gairola, Mitigation of wind load on tall buildings through aerodynamic modifications: Review, Journal of Building Engineering, 18 (2018) 180-194.
[11] J.A. Amin, A.K. Ahuja, Aerodynamic modifications to the shape of the buildings: A review of the state-of-the-art, Asian journal of civil engineering, 11(4) (2010) 433-450.
[12] A. Kareem, T. Kijewski, Y. Tamura, Mitigation of Motions of Tall Buildings with Specific Examples of Recent Applications, Journal of wind and structures, 3(4) (1999) 201-251.
[13] M. Adlparvar, M. Mahmoudabadi, M. Taghavi Parsa, Code Evaluation of Wind Loading for High-Rise Buildings with Constant and Variable Cross Section in Tehran, Journal of Concrete Structures and Materials, 4(2) (2019) 51-72 (In Persian).
[14] N. Siahpolo, A. Kheyroddin, M. Gerami, Analytical Assessment of Pros and Cons for Prevalent Tall Building System in Comparison with Tube System Using ASCE7-05 Wind Load Specifications, Amirkabir Journal of Civil Engineering, 48(1) (2016) 87-100. (In Persian).
 [15] H. Bakhshi, M. Rakhshanifar, M. Ramshini, Turbulence analysis around high buildings during the construction period with different forms in plan, Modares Civil Engineering journal, 17(2) (2018) 33-43(In Persian).
 [16] A. Ardekani, M. Golabchi, S.M. Hosseini, M. Alaghmandan, Investigation of the Impact of High-rise Buildings Shapes on their Structural Stability in order to Reduce Seismic Hazards (Case Study: The Effect of Shape of Plan), Environmental Management Hazards, 4(1) (2017) 27-42 (In Persian).
[17] E. H. Ghoniem, N. Ayyash, A. Essam, Seismic Response of High-rise Buildings with Different Structural Systems, International Journal of Engineering and Innovative Technology (IJEIT), 8(9) (2018) 42-51.
[18] I. Almufti, C.H. Molina, M. Willford, Seismic Assessment of Typical 1970s Tall Steel Moment Frame Buildingsin Downtown San Francisco, in: 15 World Conference of Earthquake Engineering, Lisboa, 2012.
[19] F. Etedadi Aliabadi, M.M. Memarpour, Investigation of the Seismic Behavior of Framed Tube Buildings Considering Soil Structure Interaction, Journal of Structural and Construction Engineering, 6(2) (2019) 119-140 (In Persian).
[20] M. Abdi Moghadam, A. Meshkat-Dini, The Effect of Belt Truss Level on the Performance of Steel High-Rise Buildings Subject to Near Field earthquake, Amirkabir Journal of Civil Engineering, 49(4) (2018) 665-678 (In Persian).
[21] A. Esmailzad, A. khodabandelou, Investigating the Effect of Shear Walls Arrangement on Seismic Performance of High-rise Reinforced Concrete Buildings with Tube in Tube System, Analysis of Structure and Earthquake, 15(1)(2018) 51-60 (In Persian).
[22] M. A. Aly, S. Abburu, On the Design of High-Rise Buildings for Multihazard: Fundamental Differences between Wind and Earthquake Demand, Shock and Vibration, (2015) Article ID 148681, DOI: 10.1155/2015/148681.
[23] S. N. Thilakarathna, N. Anwar, P. Norachan, F. A. Naja, The Effect of Wind Loads on the Seismic Performance of Tall Buildings, Athens Journal of Technology and Engineering, 5(3) (2018) 251-276.
[24] A. Adnan, S. Suradi, Comparison on the effect of earthquake and wind loads on the performance of reinforced concrete buildings, in: The 14th World Conference on Earthquake Engineering, Beijing, China, 2008.
[25] K. Heiza, M. Tayel, Comparative Study of the Effects of Wind and Earthquake Loads on High-rise Buildings, Concrete Research Letters, 3(1) (2012) 386-405.
[26] M. Moghadasi, S. Taeepoor, S.S. Rahimian Koloor, M. Petrů, The Effect of Lateral Load Type on Shear Lag of Concrete Tubular Structures with Different Plan Geometries, Crystals, 10(10) (2020) 897.
[27] E. Türkeli, Determination and Comparison of Wind and Earthquake Responses of Reinforced Concrete Minarets, Arabian Journal for Science and Engineering, 39 (2014) 3665–3680.
[28] Housing and Urban Development, Iranian national building code (Part 6): Applied loads on buildings, Ministry of Housing and Urban Development, Tehran, Iran, 2013 (In Persian).
[29] Building and Housing Research Center, Iranian code of practice for seismic resistance design of buildings, Standard No. 2800, 4rd Edition, Publisher: BHRC, 2014 (In Persian).
[30] J.C. Wu, J.N. Yang, Active control of transmission tower under stochastic wind, Journal of Structural Engineering, 124(2) (1998) 1302-1312.
[31] N. Khodaie, Vibration control of super-tall buildings using combination of tapering method and TMD system, Journal of Wind Engineering and Industrial Aerodynamics, 196 (2020) 104031.
[32] H.E. Kalehsar, N. Khodaie, Wind-induced vibration control of super-tall buildings using a new combined structural system, Journal of Wind Engineering and Industrial Aerodynamics, 172 (2018) 256-266.
[33] C. Wang, Z. Lü, Y. Tu, Dynamic Responses of Core-Tubes with Semi-Flexible Suspension Systems Linked by Viscoelastic Dampers under Earthquake Excitation, Advances in Structural Engineering, 14(5) (2011) 801-813.
[34] National Research Council (NRC), User's guide-NBC 2005: structural commentaries (Part 4 of Division B), Canadian Commission on Building and Fire Codes, Ottawa, Canada, 2005.
[35] E. Hosseinkhani, H. Rahnama, A. Johari, Damping modification factor for earththquake elastic spectral of Iran, 9th international congress of civil structure, Industrial university of Esfahan, Esfahan, Iran, 2011 (In Persian).
[36] T. Balendra, Vibration of Buildings to Wind and Earthquake Loads, Springer Verlag, Department of Civil Engineering National University of Singapore, 1993.