Study On Optimum Design of Steel Building Structures

• Main Authors: Ching-Fang Hsu, 徐清芳
• Other Authors: Chin-Sheng Kao
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/6fpanc

碩士 === 淡江大學 === 土木工程學系碩士班 === 106 === With the features of high strength, excellent quality, good uniformity, the advantages of seismic resistance capability, convenient for construction, and also reusable, steel structure is gradually replacing reinforced concrete structure in buildings after 921 earthquake, which caused a great amount of damages in building structures. In terms of high-level buildings, it’s even more necessary to use steel structure due to the high strength. At present, people in Taiwan mostly go through the process of making hypothesis, doing analysis, checking, adjusting, re-analyzing, re-checking to finish the design of steel structure buildings. And the design will be confirmed after making sure if it follows all the regulations. Yet, a lot of time, it is not the most cost-effective way. In order to make the most of the resource of materials while we are running out of the resources we have on Earth, this study discusses the optimal designing solution of building steel structure facilities that requires less time, especially for the domestic designer. Eventually, it will decrease the use of material. This study first uses searching method to investigate the most economical design model of the size of steel section based on different stress conditions on the section. Secondly, this study also discusses to establish the heuristic iterative optimization analysis model for 2-D steel building structures by using ETABS software to perform the analysis, in addition, discussing to establish the optimal design model for 2-D steel building structures by using CAFÉ software to analyze. Then compare the difference between those two. Lastly, this study further establishes the theistic iterative optimization analysis model for 3-D steel building structures and the optimal design model of using CAFÉ software. The result shows that building the steel section with the most economical design model, the heuristic iterative optimization analysis model, as well as the optimal design model by using CAFÉ software, could make the usage of materials to the least. These results can greatly improve the practicability of the structural optimal design of steel building structures in Taiwan.