Optimum Design of Braced Steel Space Frames including Soil-Structure Interaction via Teaching-Learning-Based Optimization and Harmony Search Algorithms

Abstract

Optimum design of braced steel space frames including soil-structure interaction is studied by using harmony search (HS) and teaching-learning-based optimization (TLBO) algorithms. A three-parameter elastic foundation model is used to incorporate the soil-structure interaction effect. A 10-storey braced steel space frame example taken from literature is investigated according to four different bracing types for the cases with/without soil-structure interaction. X, V, Z, and eccentric V-shaped bracing types are considered in the study. Optimum solutions of examples are carried out by a computer program coded in MATLAB interacting with SAP2000-OAPI for two-way data exchange. e stress constraints according to AISC-ASD (American Institute of Steel Construction-Allowable Stress Design), maximum lateral displacement constraints, interstorey drift constraints, and beam-tocolumn connection constraints are taken into consideration in the optimum design process. e parameters of the foundation model are calculated depending on soil surface displacements by using an iterative approach. e results obtained in the study show that bracing types and soil-structure interaction play very important roles in the optimum design of steel space frames. Finally, the techniques used in the optimum design seem to be quite suitable for practical applications.

Geopolimer Beton ve Geleneksel Beton Üretim Süreçlerinden Kaynaklı CO2 Salınımının Metasezgisel Yöntemlerle Belirlenmesi

“…Çelik yapılar alanında, konstrüksiyon ağırlığını en az tutan optimum tasarımın elde edilmesi amacıyla da çeşitli çalışmalar yapılmış ve başarılı sonuçlar elde edilmiştir [21,22,23,24]. TLBO algoritmasının, başka metasezgisel algoritmalarla birlikte hibrit olarak kullanılabilirliği ile başka algoritmalarla kıyasalanması da yapılan araştırmalar arasındadır [25,26].…”

Seismic Behavior of the Removable Links in Eccentrically Braced Frames with Semirigid Connections

“…e simulation is conducted using ABAQUS software (SIMULIA, 2016), and a C3D8R solid element is used, which reduces integration and eight nodes with three degrees of freedom per node [42]. e numerical model is shown in Figure 30.…”

“…e high-strength steel bolt (M22) used is of grade 10.9 (including the bolt heads, shanks, and nuts). According to the stress-strain relationship of the material property test, the measured engineering stress-strain relationship is converted into the real stress-strain relationship according to formulas (9) and (10) [42,43]:…”

A Novel Hybrid Harmony Search Approach for the Analysis of Plane Stress Systems via Total Potential Optimization

“…Elaki et al proposed a method combining HS and Artificial Neural Networks for the aim of assessing the reliability of structures with the implicit limit state function [27]. By using the three-parameter Vlaslov Elastic Foundation model, soil-structure interaction was also considered in the optimum design of braced steel frame structures using HS and TLBO [28]. De Almedia investigated the optimum design of laminated composite structures via HS [29].…”