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Best Location of Conventional Outrigger in Tall Buildings with Discontinuity in Moment of Inertia of Shear Core using Energy Method with Closed-Form Solution | ||
| Journal of Rehabilitation in Civil Engineering | ||
| دوره 14، شماره 3 - شماره پیاپی 43، آبان 2026 اصل مقاله (1007.08 K) | ||
| نوع مقاله: Regular Paper | ||
| شناسه دیجیتال (DOI): 10.22075/jrce.2025.2337 | ||
| نویسندگان | ||
| Hamed Fallahi1؛ Reza Rahgozar* 1؛ Yasser Sharifi2 | ||
| 1Department of Civil Engineering, Faculty of Engineering, Shahid Bahonar University of Kerman, Kerman, Iran | ||
| 2Faculty of Engineering, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran | ||
| تاریخ دریافت: 14 خرداد 1404، تاریخ بازنگری: 20 مهر 1404، تاریخ پذیرش: 30 آبان 1404 | ||
| چکیده | ||
| This study presents a graphical solution for determining the initial positioning of Conventional Outrigger (CO) system in the shear core with discontinuity in moment of inertia, using the energy method in tall building. In this model a cantilevered beam presents The framed-tube system, while the CO system is modeled by rotational springs located at their respective positions. By applying the energy method, best locations of the CO are identified along the building height to maximize energy absorption and dissipation. For validation, the model is compared with the case of a uniform shear core, and the results are shown to be consistent with previous studies. Quantitative results indicate that when the shear core has no discontinuity, the best positions of the CO are approximately 0.44L, 0.49L, 0.32L, and 0.52L of the building height (L) for uniform, triangular, inverted triangular, and parabolic load distributions, respectively. Furthermore, with increasing values of the parameter γ, which corresponds to greater slenderness in the second segment of the shear core, the best positions shift upward along the building height. In some cases, the best location falls within the first segment of the shear core, similar to the case of a uniform shear core. The proposed closed-form solution and the developed utility graphs offer a practical and efficient tool for identifying the initial positioning of CO system during the preliminary design of tall buildings. | ||
تازه های تحقیق | ||
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| کلیدواژهها | ||
| Tall building؛ Conventional outrigger؛ Discontinuity in shear core | ||
| مراجع | ||
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[1] Hemmati A, Kheyroddin A. Behavior of large-scale bracing system in tall buildings subjected to earthquake loads. J Civ Eng Manag 2013;19:206–16.
[2] Kheyroddin A, Abdollahzadeh D, Mastali M. Improvement of open and semi-open core wall system in tall buildings by closing of the core section in the last story. Int J Adv Struct Eng 2014;6:1–12.
[3] Angelucci G, Cecca E, Mollaioli F. Parametric Analysis of Outrigger Systems for High-Rise Buildings with Different Geometric Shapes. Appl Sci 2025;15:5643.
[4] Smith B, Salim I. Parameter study of outrigger-braced tall building structures. J Struct Div 1981;107:2001–14.
[5] Smith J, Coull A, Structures TB. Analysis & Design. Wiley and sons, New York; 1991.
[6] Wu J, Li Q. Structural performance of multi‐outrigger‐braced tall buildings. Struct Des Tall Spec Build 2003;12:155–76.
[7] Baygi S, Khazaee A. The optimal number of outriggers in a structure under different lateral loadings. J Inst Eng Ser A 2019;100:753–61.
[8] Noormohamadian M, Salajegheh E. Multi-objective aerodynamic optimization of the exterior shape of tall buildings with trilateral cross-section. J Rehabil Civ Eng 2022;10:129–45.
[9] Chen Y, Zhang Z. Analysis of outrigger numbers and locations in outrigger braced structures using a multiobjective genetic algorithm. Struct Des Tall Spec Build 2018;27:e1408.
[10] Xing L, Gardoni P, Yu J, Zhou Y, Zhang P. Multi-objective optimization of high-rise buildings with outrigger systems subject to seismic loads. J Build Eng 2025:113197.
[11] Üstüner B, Doğan E. Weight optimization of outrigger-braced high-rise steel frames considering soil-structure interaction via metaheuristic algorithms. Structures, vol. 79, Elsevier; 2025, p. 109567.
[12] Park HS, Lee E, Choi SW, Oh BK, Cho T, Kim Y. Genetic-algorithm-based minimum weight design of an outrigger system for high-rise buildings. Eng Struct 2016;117:496–505.
[13] Habrah A, Batikha M, Vasdravellis G. An analytical optimization study on the core-outrigger system for efficient design of tall buildings under static lateral loads. J Build Eng 2022;46:103762.
[14] Babaeia M, Mohammadi Y, Ghannadiasl A. Dynamic Analysis of Tapered Tall Buildings with Different Tube Structural Systems. J Rehabil Civ Eng 2021;9:37–61.
[15] Rahgozar P. Free vibration of tall buildings using energy method and Hamilton’s principle. Civ Eng J 2020;6:945–53.
[16] Kwan A. Simple method for approximate analysis of framed tube structures. J Struct Eng 1994;120:1221–39.
[17] Rahgozar R, Ahmadi A, Sharifi Y. A simple mathematical model for approximate analysis of tall buildings. Appl Math Model 2010;34:2437–51.
[18] Rahgozar R, Ahmadi A, Ghelichi M, Goudarzi Y, Malekinejad M, Rahgozar P. Parametric stress distribution and displacement functions for tall buildings under lateral loads. Struct Des Tall Spec Build 2014;23:22–41.
[19] Kamgar R, Rahgozar R. Determination of optimum location for flexible outrigger systems in non-uniform tall buildings using energy method. Int J Optim Civ Eng 2015;5:433–44.
[20] Kamgar R, Rahgozar R. Determination of optimum location for flexible outrigger systems in tall buildings with constant cross section consisting of framed tube, shear core, belt truss and outrigger system using energy method. Int J Steel Struct 2017;17:1–8.
[21] Wang M, Nagarajaiah S, Sun F. Dynamic characteristics and responses of damped outrigger tall buildings using negative stiffness. J Struct Eng 2020;146:4020273.
[22] Shelake M. Analysis of Skyscrapers with K-StyleOutrigger Belt Truss System and ShearWalls Under Lateral Load 2025.
[23] Biondi B, Caddemi S. Closed form solutions of Euler–Bernoulli beams with singularities. Int J Solids Struct 2005;42:3027–44.
[24] Al-Ansari L. Calculating of natural frequency of stepping cantilever beam. Int J Mech Mechatronics Eng IJMME-IJENS 2012;12:59–68.
[25] Jahanshahi M, Rahgozar R. Optimum location of outrigger-belt truss in tall buildings based on maximization of the belt truss strain energy 2013.
[26] Kamgar R, Rahgozar P. Reducing static roof displacement and axial forces of columns in tall buildings based on obtaining the best locations for multi-rigid belt truss outrigger systems. Asian J Civ Eng 2019;20:759–68. | ||
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