Optimum Detailed Design of Reinforced Concrete Continuous Beams using the Harmony Search Algorithm

Akin, A.
Saka, M. P.
Design optimization of reinforced concrete structures is more challenging than that of steel structures due to the complexity associated with reinforcement design. In this study, optimum design algorithm is presented for reinforced concrete continuous beams. The design variables are selected as the width and the depth of beams in each span, the diameter and the number of longitudinal reinforcement bars along span and supports, and the diameter of ties. The design constraints are implemented from ACI 318-05 which covers the flexural and shear strength, serviceability, the minimum and maximum steel percentage for flexural and shear reinforcement, the spacing requirements for the stirrups and the upper and lower bound requirements for the width and the depth of the beam section. The objective function is considered as the total cost of continuous beam which includes the cost of concrete, formwork and reinforcing steel bars. The cost of any component is inclusive of material, fabrication and labour. The design algorithm automatically updates the value of the dead load which includes self-weight of the continuous beam depending on the cross-sectional dimensions during the design cycles. The optimum design problem formulated according to ACI 318-05 with the design variables mentioned above turns out to be a discrete programming problem. The harmony search algorithm (HS) is utilized to obtain its solution. Harmony search algorithm has been applied to various engineering design optimization problems and is found quite effective in finding the optimum solutions. It is quite simple and has few parameters to initialize. It needs relatively less number of function evaluations to reach the optimum solution. Due to these advantages, harmony search method is used to obtain the solution of the design problem. Numbers of design examples taken from the literature are included to demonstrate the efficiency and robustness of the optimum design algorithm presented.


Optimum Design of Concrete Cantilever Retaining Walls using the Harmony Search Algorithm
Akin, A.; Saka, M. P. (2010-09-17)
Optimum cost design of reinforced concrete cantilever retaining walls with harmony search algorithm is presented in this paper. The reinforced concrete cantilever retaining wall is the most common type among the retaining wall structures. In the formulation of the optimum design problem the height and thickness of stem, length of toe projection and the thickness of stem at base level, the length and thickness of base, the depth and thickness of key and the distance from toe to the key are treated as design ...
Optimum design of steel space frames via bat inspired algorithm
Hasançebi, Oğuzhan (null; 2013-05-19)
Design optimization of steel space frames is a very popular topic in structural engineering due to economy saved in cost of the structures by optimization process. Although the final cost of a steel frame is affected by many factors, such as material, manufacturing, erection and transportation costs, the material cost of steel comprises a great deal of overall cost of the structure. Hence, the design optimization of steel frames is focused on weight minimization in the literature based on the assumption tha...
Developing a structural optimization software for efficient and practical optimum design of real-world steel structures
Korucu, Aytaç; Hasançebi, Oğuzhan; Department of Civil Engineering (2022-8-10)
Structural engineers have to design not only safe and practical buildings in a reasonably short period but also guarantee that the design generated should be cost-efficient. However, the design of real-world structures in a traditional way is an extremely laborious and time-consuming task, and final designs are often uneconomical. In this study, a computationally efficient, design-driven optimization technique (Guided Evolution Strategy Optimization, GES) is developed for the optimal design of real-world st...
Seismic upgrading of reinforced concrete frames with structural steel elements
Özçelik, Ramazan; Binici, Barış; Department of Civil Engineering (2011)
This thesis examines the seismic internal retrofitting of existing deficient reinforced concrete (RC) structures by using structural steel members. Both experimental and numerical studies were performed. The strengthening methods utilized with the scope of this work are chevron braces, internal steel frames (ISFs), X-braces and column with shear plate. For this purpose, thirteen strengthened and two as built reference one bay one story portal frame specimens having 1/3 scales were tested under constant grav...
Optimum design of high-rise steel buildings using an evolution strategy integrated parallel algorithm
Hasançebi, Oğuzhan; Kurç, Özgür (null; 2009-12-01)
The present study addresses a parallel solution algorithm for optimum design of large steel space frame structures, in particular high-rise steel buildings. The algorithm implements a novel discrete evolution strategy optimization method to effectively size these systems for minimum weight according to the provisions of ASD-AISC specification and various practical aspects of design process. The multitasking environment in the algorithm rests on a master-slave model based parallelization of the optimization ...
Citation Formats
A. Akin and M. P. Saka, “Optimum Detailed Design of Reinforced Concrete Continuous Beams using the Harmony Search Algorithm,” 2010, vol. 93, p. 0, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/64547.