Optimization Of Shear Wall Allocation In 3D Frames By Branch-and-bound Method
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T. Takada, Y. Kohama & A. Miyamura
Optimization of shear wall allocation in 3D frames by branch-and-bound method T. Takada*, Y. Kohama* & A. Miyamura^ ^Faculty of Engineering, Mie University, Japan >, A/agqya Czfy Abstract It is required that distribution of shear resistant elements such as walls or braces is appropriately accomplished in order to decrease torsional moment about a vertical axis due to lateral forces such as seismic or wind loads, which lead to local large displacements. An allocation design of shear walls in a multi-storied 3D building system, which is reduced to a design problem of appropriate selections of walls from a large number of discrete candidates, is a combinatorial optimality problem. Such a structural design is subjected to not only structural but also architectural and constructional constraints. In addition, when the scale of the design problem becomes larger, an effec- tive scenario of computer support is indispensable to obtain rational design solutions.