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Optimization method on brace arrangement of center brace steel frame structural system
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Optimization method on brace arrangement of center brace steel frame structural system
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Journal Article
Optimization method on brace arrangement of center brace steel frame structural system
2024
Overview
Traditional center brace steel frame structural systems typically focus on refining the member cross-section size in the brace arrangement and optimization analysis. However, they often overlook the critical aspects of brace location and overall structural performance that are inherently interconnected. This study highlights the impact of different brace arrangement locations on the structural performance. Consequently, by employing the fundamental principle of maximum structural stiffness and a derived theoretical model of a simplified optimized arrangement, we proposed a novel method for optimizing the arrangement of center braces. This resulted in significant enhancements in the mechanical properties of the steel frame brace structural system compared with traditional approaches. It elucidated the intrinsic connection between the positional parameters of the center brace and the lateral resistance performance of each story and derived a theoretical formula validated through 190 ABAQUS finite element analysis models. Building on this foundation, this study further analyzed the factors influencing the lateral resistance performance within the frame brace system. A simplified mechanical model of the center brace steel frame structure was established, along with an explanation of the brace optimization principles using the basic brace unit. The static and dynamic performances of structures featuring optimal brace arrangements were thoroughly examined to understand their impact on the overall lateral performance and yielding mechanisms. Additionally, the dynamic response of the structures following the implementation of optimal brace arrangements was studied to explore the relationship between brace location and seismic performance.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V
