Affiliation:
1. Faculty of Civil Engineering, Thuyloi University, 175 Tay Son, Dong Da, Hanoi 100000, Vietnam
Abstract
This paper presents a multi-objective optimization of steel trusses using direct analysis. The total weight and the inter-story drift or displacements of the structure were two conflict objectives, while the constraints relating to strength and serviceability load combinations were evaluated using nonlinear inelastic and nonlinear elastic analyses, respectively. Six common metaheuristic algorithms such as nondominated sorting genetic algorithm-II (NSGA-II), NSGA-III, generalized differential evolution (GDE3), PSO-based MOO using crowding, mutation, and ε-dominance (OMOPSO), improving the strength Pareto evolutionary algorithm (SPEA2), and multi-objective evolutionary algorithm based on decomposition (MOEA/D) were applied to solve the developed MOO problem. Four truss structures were studied including a planar 10-bar truss, a spatial 72-bar truss, a planar 47-bar powerline truss, and a planar 113-bar truss bridge. The numerical results showed a nonlinear relationship and inverse proportion between the two objectives. Furthermore, all six algorithms were efficient at finding feasible optimal solutions. No algorithm outperformed the others, but NSGA-II and MOEA/D seemed to be better at both searching Pareto and anchor points. MOEA/D was also more stable and yields a better solution spread. OMOPSO was also good at solution spread, but its stability was worse than MOEA/D. NSGA-III was less efficient at finding anchor points, although it can effectively search for Pareto points.
Subject
Building and Construction,Civil and Structural Engineering,Architecture
Reference54 articles.
1. (2005). Eurocode 3: Design of Steel Structures—Part 1-1: General rules and Rules for Building, 2005 (Standard No. EN 1993-1-1).
2. (1999). Manual of Steel Construction—Load and Resistance Factor Design (Standard No. AISC-LRFD).
3. Efficiency of dynamic relaxation methods in nonlinear analysis of truss and frame structures;Sarafrazi;Comput. Struct.,2012
4. A dual approach to perform geometrically nonlinear analysis of plane truss structures;Habibi;Steel Compos. Struct.,2018
5. An efficient method of system reliability analysis of steel cable-stayed bridges;Truong;Adv. Eng. Softw.,2017
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献