| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
There are two major types of lateral frame systems in steel buildings, which are space frame system (SFS) and perimeter frame system (PFS). Moment connections are used in most of beam-to-column connections in SFS, while they are limitedly used in the perimeter frames in PFS. Structural characteristics of steel office buildings designed with SFS and PFS are investigated. Superior design solutions are computed by using Multiple Start Local Search (MSLS) for the standard steel office buildings with these two different lateral frame systems. The superior design solutions are locally optimized solutions of a problem under constraints on allowable stress design and seismic ultimate lateral strength requirements. The objective function is the total volume of steel and the discrete variables are the steel member sizes. Inelastic pushover analyses are conducted. The steel volume of the superior solutions with PFS is smaller than that with SFS.
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