格子型制振壁システムに用いる鋼管捩りダンパーの基本的力学性能に関する実験的研究

摘要

In this paper, a cyclically increasing load test was performed in order to confirm the mechanical performance of torsional steel tube damper in lattice damping wall system. This damping wall uses a lot of steel tube. We verified mechanical performance of one of steel tubes in damping wall. Test parameters are steel grade, diameter-thickness ratio, length-diameter ratio and loading pattern. Also, specimens without welded joint were manufactured in order to examine damping performance. We confirmed the stable historical behavior, as the diameter-thickness ratio and length-diameter ratio becomes small, revealed that the proof stress and energy absorption capacity is increased.%本研究では,捩れ変形を受ける円形鋼管の塑性域における履歴挙動の安定性,変形の進行に伴う耐カ上昇の変化,終局状態などの基本性状とともに,図1の制振壁システムにおいて,座屈を生じずに安定的な挙動を示すための鋼種,径厚比,径長比などの要件を実験的に確認した.現場での施工効率を向上させるために非溶接接合方式の試験体を製作し,溶接接合方式との性能を比較検討した.