損傷を梁端下フランジの接合要素に限定する新しい鋼構造骨組 : その2 床スラブ付き架構の実験

概要

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It is very important for structural engineers to consider restoring buildings soon after an earthquake. In the previous paper, the authors proposed new ductile steel frames, which realized not only structural performance but also easy repair after an earthquake. In this paper, two tests were conducted to apply the new system to buildings more effectively. Firstly, a cyclic loading test of a frame with the weak-web-split-tee was carried out. The beam of the frame had two disadvantageous conditions to a plastic rotation capacity. They are a very thin web-plate of the beam, and a concrete slab on the beam. As the result of the first test, the frame showed a sufficient rotation capacity by limiting plastic rotation to the weak-web-split-tees at the bottom flange of beam-ends. Secondly, a cyclic loading test of a frame, which had the buckling-restrained braces with bolted connections, were carried out At the bolted connections, the concrete slab with reinforcement bars was used to transfer a lateral force of the dampers. As the result of the second test, the concrete slab showed the sufficient capacity to work dampers. From the results of the two tests, it showed that the new system could be applied to buildings more effectively.
2004-11-30