多目的最適化法による鋼構造物の構造創生支援に関する研究:小梁配置最適化問題への応用

摘要

構造最適化問題は，数理工学の分野での最適化問題を構造問題に適用したものであり，特に機械工学の分野では実用化が進んでいる。一方，建築分野では，研究の歴史が古いにもかかわらず，機械分野のように実用化されるまでには至っていない。%The process of design of structures is composed of a number of repetitive processes in which trial and error between the assumptions at each stage and results on structural systems are done toward the compromising solutions. It can be said that most engineers are not so sure that they could insist what they finally chose is the best structural design among the other possible solutions. Therefore, it would be the long-awaited tools if we could have some definite solutions even to a certain extent by using those devices, by which we could not only save time but also concentrate our ability only on the essential design processes such as planning or aesthetic investigation. In this research, it is the final goal to develop the structural optimization software system which can draw out the ability of structural engineers by processing obvious routine processes rapidly as well as surely through the mathematical optimization scheme. In this paper, the decision problem of the arrangements of binding beams which have a function not only to transmit a floor load to girder beams but also of a role to stiffen them to avoid the lateral-torsional buckling is dealt with, which has not been paid much attention so far.