Selecting Optimal Dimensions of Internal Tube in Tube-in-Tube Structural Systems Based on Structural Parameters

Document Type : Applicable

Authors

1 Ph.D. student of Structural Engineering, University of Mohaghegh Ardabili, Ardabil, Iran.

2 Associate Professor of Civil Engineering, University of Mohaghegh Ardabili, Ardabil, Iran.

Abstract

Tubular structural systems are one of the most common types of systems in high-rise structures. In the early days of this system, there were imperfections in its design which were overcome over time. The most important modification to rectify these defects is the use of a series of internal frames in addition to the peripheral frames and new systems in the center of the plan to eliminate design weaknesses over time. The central frames such as the inner tube, enhance the final rigidity and durability of the system. In this paper, high-rise buildings of 30, 40 and 50 floors have been subjected to static linear analysis and resistive design and their key design parameters have been investigated. The method is in a way that several samples with real dimensions are selected and the variables of height and the inner tube dimensions are numerically compared. The results revealed that the inner tube dimensions play an important role in improving the design parameters and the best dimension of the inner tube in a square plan is equal to half of the dimension of the outer tube.

Keywords

References

1. Khan, F.R. Tubular Structures for Tall Buildings, Handbook of Concrete Engineering, Van Nostrand Reinhold, New York, The United States, 1985. [DOI:10.1007/978-1-4757-0857-8_11]
2. Pekau, O. A, Lin, L., Zeilinski, Z. A., Static and Dynamic Analysis of tall tube in tube Structure by Finite Story method. Engineering structure, 1996. 18(7): p. 515-527. [DOI:10.1016/0141-0296(95)00136-0]
3. Rahgozar, R., Mahmoudzadeh, Z. Malekinejad, M., Dynamic analysis of combined system of framed tube and shear walls by Galerkin method using B-spline functions. The Structural Design of Tall and Special Buildings, 2015. 24: p. 591-606. [DOI:10.1002/tal.1201]
4. Mohammad nejad, M., Haji Kazemi, H., A new and simple analytical approach to determining the natural frequencies of framed tube structures. Structural Engineering and Mechanics, 2018. 65 (1): p. 111-120.
5. Shen, J., Ren, X., Zhang, Y. and Chen, J., Nonlinear dynamic analysis of frame-core tube building under seismic sequential ground motions by a supercomputer. Soil Dynamics and Earthquake Engineering, 2019. 124: p. 86-97. [DOI:10.1016/j.soildyn.2019.05.036]
6. Kheyroddin, A., Gerami, M., Siah Polo, N., An Analytical Study of the Advantages and Disadvantages of Different Types of Systems in High Structures by Comparison of Peripheral Tube System Under Wind Loading Based on ASCE7-10. Amir Kabir Journal of Civil and Environmental Engineering, 2016. 48(1): p. 87-100.
7. Hamidi, H., Pakdaman, J., Jahani E. Evaluation and Comparison of Behavior of Tall Buildings with Brake Outrigger and Truss Belt System Using Fragility Curves. Journal of Structural and Construction Engineering, 2018 5(1): p. 1 - 174.
8. SAP2000, "V.18 CSI", Computer & Structures, Inc., Berkeley, California, USA, (2016).
9. ETABS, Version16.2.1, CSI, Computer & Structures, Inc., Berkeley, California, USA, 2016.
10. Kamgar, R. and Saadatpour, M.M. A simple mathematical model for free vibration analysis of combined system consisting of framed tube, shear core, belt truss and outrigger system with geometrical discontinuities. Applied Mathematical Modelling, 2012. 36(10): p. 4918-4930. [DOI:10.1016/j.apm.2011.12.029]
11. Golabchi, M., Golabchi, M. R. Principles of Design of High-rise Buildings, University of Tehran Press, First Edition, Tehran, Irian, 2013.
12. Derakhshandeh Nejad, S. Golabchi M. High-rise Buildings with Tubular Structure System, Simaye Danesh Publications, First Edition, Irian, 2016.
13. This code applies to minimum Loads on Building and technical facilities, sixth topic, Building and Housing Research Center, Iran, 2013.
14. ASCE Standard ASCE/SEI 7-10, Minimum design loads for buildings and other structures, Structural engineering American Society of Civil Engineers, USA, 2010.
15. AISC Committee, Specification for structural steel buildings (ANSI/AISC 360-10), American Institute of Steel Construction, Chicago-Illinois, USA, 2010.
16. AISC 341‐10, Seismic provisions for structural steel buildings, American Institute of Steel Construction, USA, 2010.
17. Gaur, H. and Goliya, R.K., Mitigating shear lag in tall buildings. International Journal of Advanced Structural Engineering (IJASE), 2015. 7(3): p. 269-279. [DOI:10.1007/s40091-015-0098-1]
18. Kheyroddin, A., Aramesh, S., Resistant structural systems in tall buildings, Semnan University Press, First Edition, Semnan, Iran, 2013.
19. Seismic Resistant Design Code of Buildings, Standard No. 2800, Road, Housing and Urban Development Research Center, Iranian Standards and Construction Code Set, 4th Edition. Iran, 2013.
Numerical Methods in Civil Engineering
Volume 5, Issue 3
March 2021
Pages 23-33

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History

  • Receive Date: 22 January 2021
  • Revise Date: 18 February 2021
  • Accept Date: 26 February 2021

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