Morteza Madhkhan Articles List

List of Articles Morteza Madhkhan

Open Access Article
- Abstract Page
- Full-Text
1 - Investigating of Spectral Dynamic Analysis and Equivalent Static Analysis in Optimal Design of Steel Frames using Genetic Algorithm
Mohammadreza Baradaran Morteza Madhkhan
20.1001.1.23456310.1397.15.4.5.9

Genetic algorithm (GA) is one of the meta-heuristic optimization algorithms. In this paper, the effects of spectral dynamic and equivalent static analysis methods on the calculated optimum weight of the frame are investigated by the means of GA. In the equivalent static More

Genetic algorithm (GA) is one of the meta-heuristic optimization algorithms. In this paper, the effects of spectral dynamic and equivalent static analysis methods on the calculated optimum weight of the frame are investigated by the means of GA. In the equivalent static analysis, the applied lateral load and design constraints are considered according to ASCE and LRFD-AISC specifications. The internal forces of the frame members are calculated using finite element method. Analysis and optimization of the frame are performed using a program written in MATLAB programming language. Three types of selection including stochastic selection, tournament selection, and ranking selection as well as three different types of crossover, single point, two-point, and continuous crossover are utilized in this study. Moreover, a comparison between equivalent static analysis and spectral dynamic analysis is presented. The results indicate that the difference between the optimum weight of the structure analyzed by spectral dynamic and equivalent static methods increases as the applied load is increased Manuscript profile
Open Access Article
- Abstract Page
- Full-Text
2 - Optimal Design of the Diagrid Structural Systems using Improved Genetic Algorithm
Mohammadreza Baradaran Morteza Madhkhan
10.30495/civil.2022.695117

20.1001.1.28210999.1401.19.2.6.9

One of the new structural systems utilized in high-rise structures is diagrid structural systems. In this type of structural system, the columns are removed and the diagrid members are replaced. In other words, in addition to carrying gravity loads, the diagrid members More

One of the new structural systems utilized in high-rise structures is diagrid structural systems. In this type of structural system, the columns are removed and the diagrid members are replaced. In other words, in addition to carrying gravity loads, the diagrid members also control lateral loads and there is no need to design a lateral load-bearing system for the structure. The buildings built with this system, in addition to innovation in the structural system, have a beautiful and unique architectural design. One of the most important and effective design parameters in diagrid structures is determining the angle of diagrid members. This angle directly affects the weight of the structure. In the present research, the angle of diagrid members has been studied and evaluated. For this purpose, a 24-storey building has been analyzed and optimized. In order to optimize the structure, an improved genetic algorithm has been used. In this regard, using the genetic algorithm, the optimal weight of the frame at different angles for the diagrid structural system as well as the structural system with mega bracing is determined and the optimal weight is presented. The weight of the diagrid structure was compared with the weight of the mega bracing system. The results show that the optimal angle of the diagonal members in the mega bracing system is approximately 36 degrees, while this angle is approximately 65 degrees for the diagrid system. Manuscript profile

Current Issue

Published Issues

Menu

Browse

List of Articles Morteza Madhkhan