Bulletin of Earthquake Science and Engineering

Bulletin of Earthquake Science and Engineering

Seismic Evaluation of Optimized Special Moment Frames in High-Rise Reinforced Concrete Buildings based on Performance Considering the Effect of Increasing the Height Compared to the Width of the Frame

Document Type : Research Note

Authors
Saba Gholamzadeh 1
Ashkan KhodaBandehLou 2
1 M.Sc. Student in Structural Engineering, Department of Civil Engineering, Islamic Azad University, Urmia branch, Urmia, Iran
2 Associate Professor, Department of Civil Engineering, Islamic Azad University, Urmia branch, Urmia, Iran
10.48303/bese.2024.2019477.1149
Abstract
In engineering designs, the desired goal is to reduce the project cost as much as possible. In structural engineering, this goal is pursued in different stages, including the design, construction and installation stages. The goal of optimal design is to reduce the cost in the design stage. For this purpose, many meta-exploratory algorithms inspired by nature have been developed. Another important point in the optimal design is the structure analysis and design method. Since seismic loads have an unpredictable nature, if the design is such that the structure stays within the linear limit during an earthquake, the weight of the structure obtained from this design method will increase uneconomically. Therefore, building codes and design methods consider the inelastic range of structural behavior with safe design methods. A strong approach for designing structures and considering the inelastic range is performance-based design, which is a multi-level approach for designing structures at different seismic levels. The new concept of performance-based design in various regulations is based on the three principles of no damage in low-intensity earthquakes, no structural damage but partial non-structural damage in moderate-intensity earthquakes, and no collapse but structural and non-structural damage in strong-intensity earthquakes. This seismic design approach is based on the principle that the structure must meet different performance objectives and increase the safety of the structure in the face of seismic hazards with low intensity and short period of time to earthquakes with high intensity and long period of time. Optimization methods can be effectively used in performance-based designs, and structure performance can be defined as one of the design goals or problem constraints. According to the design codes, the structural members should be designed in such a way that they can withstand the incoming forces with a suitable safety margin that depends on the design method. Today, optimization is considered a very efficient process for economic savings in the process of designing, building and maintaining structures. On the other hand, the performance-based design method is one of the most advanced seismic design methods for structures. Therefore, the optimal design of structures based on performance will obtain economical structures and have good safety and reliability. In the seismic analysis of a structure, its need and capacity play an important role. There are many methods that evaluate the need and capacity of the structure for seismic excitations. One of the common methods to evaluate the structural capacity is incremental dynamic analysis. Nowadays, dynamic analysis is increasingly introduced as a precise tool for structural capacity estimation. In this analysis, the structural model was subjected to a number of earthquake records, which were scaled from low intensity to high intensity. One of the challenges in the path of analysis is how to select records and their impact on answers and uncertainties. The aim of this study is the seismic evaluation of the performance base of optimally designed tall RC moment frames, considering the effect of increasing the height compared to the width of the frame. In the first step, the tall RC moment frames were optimized using push-over modal analysis in the performance-based framework based on ASCE41-17 and FEMA356 regulations and MATLAB and Open-Sees software, using a meta-heuristic algorithm. In the second step, the seismic evaluation using the incremental dynamic analysis and the fragility curves and the collapse margin ratio obtained have been discussed. In these studies, 18- and 21-story tall RC moment frames with heights of 3, 3.2, and 3.4 meters are the examples investigated in this research. According to the obtained results, by choosing structures with a height of 3.2 meters, the reason for the design is structures with a favorable collapse capacity ratio and low fragility compared to the optimal designs with the height of the floors is 3 and 3.4 meters. Therefore, the ratio of the collapse capacity in the optimal plans with a height of 3.2 meters is 15% and 12% higher than the optimal plans with a height of 3 and 3.4 meters, respectively.
Keywords
Tall RC Moment Frame
Optimization
Performance-Based Design
Incremental Dynamic Analysis
Collapse Margin Ratio

Subjects

American Concrete Institute. (2014). Building code requirements for structural concrete (ACI 318-14) and commentary. Farmington Hills, MI: Author.
American Society of Civil Engineers. (2013). Seismic evaluation and retrofit of existing buildings (ASCE/SEI 41-13).
American Society of Civil Engineers. (2017). Seismic evaluation and retrofit of existing buildings (ASCE/SEI 41-17).
Asgarian, B., Sadrinezhad, A., & Alanjari, P. (2010). Seismic performance evaluation of steel moment resisting frames through incremental dynamic analysis. Journal of Constructional Steel Research, 66(2), 178–190. https://doi.org/10.1016/j.jcsr.2009.09.008
Building and Housing Research Center. (2014). Iranian code of practice for seismic resistant design of buildings (Standard No. 2800, 4th ed.).
Cha, Y. J., & Bai, J. W. (2016). Seismic fragility estimates of a moment-resisting frame building controlled by MR dampers using performance-based design. Engineering Structures, 116, 192–202. https://doi.org/10.1016/j.engstruct.2016.02.047
Ebrahimi, A. (2013). Assessment of collapse capacity of RC buildings based on fiber-element modelling [Master's thesis, University of Canterbury].
Elnashai, A. S., et al. (2006). Significance of severe distant and moderate close earthquakes on design and behavior of tall buildings. The Structural Design of Tall and Special Buildings, 15(4), 391–416. https://doi.org/10.1002/tal.299
Fattahi, F., & Gholizadeh, S. (2019). Seismic fragility assessment of optimally designed steel moment frames. Engineering Structures, 179, 37–51. https://doi.org/10.1016/j.engstruct.2018.10.061
Federal Emergency Management Agency. (1997). NEHRP recommended provisions for seismic regulations for new buildings and other structures (FEMA 302).
Federal Emergency Management Agency. (2000a). Prestandard and commentary for the seismic rehabilitation of buildings (FEMA 356).
Federal Emergency Management Agency. (2000b). Recommended seismic design criteria for new steel moment-frame buildings (FEMA 350).
Federal Emergency Management Agency. (2009). Quantification of building seismic performance factors (FEMA P-695).
Fragiadakis, M., Lagaros, N. D., & Papadrakakis, M. (2006). Performance-based earthquake engineering using structural optimization tools. International Journal of Reliability and Safety, 1(1–2), 59–76. https://doi.org/10.1504/IJRS.2006.010911
Gholhaki, M., Pachideh, G., Rezaifar, O., & Ghazvini, S. (2018). Specification of response modification factor for steel plate shear wall by incremental dynamic analysis method. Journal of Structural and Construction Engineering, 6(2), 211–224.
Gholizadeh, S. (2015). Performance-based optimum seismic design of steel structures by a modified firefly algorithm and a new neural network. Advances in Engineering Software, 81, 50–65. https://doi.org/10.1016/j.advengsoft.2014.11.003
Gholizadeh, S., & Aligholizadeh, V. (2019). Reliability-based optimum seismic design of RC frames by a metamodel and metaheuristics. Structural Design of Tall and Special Buildings, 28(4), e1552. https://doi.org/10.1002/tal.1552
Hajirasouliha, I., Asadi, P., & Pilakoutas, K. (2012). An efficient performance-based seismic design method for reinforced concrete frames. Earthquake Engineering & Structural Dynamics, 41(4), 663–679. https://doi.org/10.1002/eqe.1149
Hardyniec, A., & Charney, F. (2015). A new efficient method for determining the collapse margin ratio using parallel computing. Computers and Structures, 148, 15–25. https://doi.org/10.1016/j.compstruc.2014.11.004
Hwang, S. H., & Lignos, D. G. (2017). Earthquake-induced loss assessment of steel frame buildings with special moment frames designed in highly seismic regions. Earthquake Engineering & Structural Dynamics, 46(13), 2141–2162. https://doi.org/10.1002/eqe.2904
Kaveh, A., & Sabzi, O. (2012). Optimal design of reinforced concrete frames using big bang–big crunch algorithm. International Journal of Civil Engineering, 10(3), 189–200.
Kheyroddin, A., Gholhaki, M., & Pachideh, G. (2020). Seismic evaluation of reinforced concrete moment frames retrofitted with steel braces using IDA and pushover methods in the near-fault field. Journal of Rehabilitation in Civil Engineering, 7(1), 159–173.
Mander, J. B., Priestley, M. J. N., & Park, R. (1988). Theoretical stress-strain model for confined concrete. Journal of Structural Engineering, 114(8), 1804–1826. https://doi.org/10.1061/(ASCE)0733-9445(1988)114:8(1804)
Pacific Earthquake Engineering Research Center. (2011). OpenSees (Version 2.4.0) [Computer software].
Rahgozar, N., & Moghaddam, A. S. (2017). Probabilistic safety assessment of self-centering steel braced frame. Frontiers of Structural and Civil Engineering, 11(4), 422–436. https://doi.org/10.1007/s11709-017-0415-9
Razmara Shooli, A., Vosoughi, A. R., & Banan, M. R. (2019). A mixed GA–PSO-based approach for performance-based design optimization of 2D reinforced concrete special moment-resisting frames. Applied Soft Computing, 85, 105843. https://doi.org/10.1016/j.asoc.2019.105843
Shafei, L., & Lignos, D. G. (2011). A simplified method for collapse capacity assessment of moment-resisting frame and shear wall structural systems. Engineering Structures, 33(4), 1107–1116. https://doi.org/10.1016/j.engstruct.2010.12.030
Stewart, J. P., Chiou, S., Bray, J. D., Somerville, P. G., & Abrahamson, N. (2001). Ground motion evaluation procedure for performance-based design (PEER Report 2001/09).
Xu, J., Spencer, B. F., & Lu, X. (2017). Performance-based optimization of nonlinear structures subject to stochastic dynamic loading. Engineering Structures, 134, 334–345. https://doi.org/10.1016/j.engstruct.2016.12.047
Yazdani, H., Khatibinia, M., Gharehbaghi, S., & Hatami, K. (2017). Probabilistic performance-based optimum seismic design of RC structures considering soil–structure interaction effects. ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering, 3(2), G4016004. https://doi.org/10.1061/AJRUA6.0000880

  • Receive Date 03 January 2024
  • Revise Date 29 July 2024
  • Accept Date 19 August 2024