RC架構に支持された鉄骨屋根体育館の妻面屋根支承部に，弾塑性や粘性の履歴を有するエネルギー吸収部材を用いたRC片持架構の構面外応答制御を試み， その有効性を検証しました。寺澤の卒業論文であり，このときから鉄骨置屋根体育館に10年以上関わることになりました。この構法は摩擦ダンパー支承としてその後実用化され，国内の既存or新設の体育館に使われたそうです。論文はこちらから
A large numbers of steel roof bearings in RC gymnasia are damaged at 2011 Tohoku Earthquake, and out-of-plane response of cantilevered RC walls supporting the roof frame is identified as one of main causes of damage. In order to use these gymnasia as shelters after the earthquake, they are required seismic retrofit. However, a conventional seismic retrofit method requires strengthening bearings with steel corner plates and replacing all the roof braces, which is uneconomical. In this paper, a seismic retrofit method inserting energy-dissipation elements into roof bearings is discussed and their response reduction effects on the gymnasium are investigated. Furthermore, a simplified response evaluation method using equivalent SDOF system and equivalent linearization technique are proposed to determine the optimum design of the energy-dissipation bearings.