DSpace コレクション:http://hdl.handle.net/11133/24012024-03-29T07:07:29Z2024-03-29T07:07:29Z二方向繰り返し力曲げを受けるSFRC柱の変形特性に関する実験的研究永谷, 勇樹水野, 憲司鈴木, 森晶水野, 英二http://hdl.handle.net/11133/26792013-10-30T01:50:47Z2012-09-06T15:00:00Zタイトル: 二方向繰り返し力曲げを受けるSFRC柱の変形特性に関する実験的研究
著者: 永谷, 勇樹; 水野, 憲司; 鈴木, 森晶; 水野, 英二2012-09-06T15:00:00Zコンファインドコンクリートの支圧特性に及ぼす端部拘束の影響小野, 晃関, 俊力山田, 和夫http://hdl.handle.net/11133/26802013-12-03T02:10:20Z2012-09-06T15:00:00Zタイトル: コンファインドコンクリートの支圧特性に及ぼす端部拘束の影響
著者: 小野, 晃; 関, 俊力; 山田, 和夫
抄録: 本研究では,コンクリートの1軸支圧特性に及ぼす横拘束形式および支圧端部の拘束長さの影響について実験的検討を行った。その結果,横補強比を等しく設定した帯筋モルタルの最大圧縮耐力は,一般的に支圧端部拘束用の鋼管長さに関わらず帯筋径が太くて帯筋間隔が大きいほど低下すること,横補強形式および支圧端部の横拘束長さの異なるコンファインドモルタルの支圧強度は,等価横補強比および破壊領域長/試験体直径比を説明変数とした推定式を用いることによって統一的に評価できること,支圧載荷時の横補強モルタルの圧縮靭性は,支圧端部拘束用の鋼管が長くなるに従って向上すること,などが明らかとなった。2012-09-06T15:00:00Z局部座屈が生じた円形断面鋼製橋脚の修復方法に関する研究嶋口, 儀之鈴木, 森晶太田, 樹青木, 徹彦http://hdl.handle.net/11133/26812016-04-21T06:25:08Z2012-09-06T15:00:00Zタイトル: 局部座屈が生じた円形断面鋼製橋脚の修復方法に関する研究
著者: 嶋口, 儀之; 鈴木, 森晶; 太田, 樹; 青木, 徹彦
抄録: After Hyogoken-Nanbu Earthquake in 1995,many studies about seismic resistance of steel bridge piers have been conducted. However,the most of those studies are only for new steel bridge piers or existing steel bridge piers which have not experienced earthquakes. Although small darnages caused by earthquakes are allowed of the current design code,no method exist for repairing the darnaged steel bridge pier. In this study,we propose three types of repair methods for steel bridge piers which have local damage by earthquake. We prepared sixteen circular steel bridge pier specimens which have local buckling in the bottom of pier by previous cyclic loading experiments. Afterr,repairing them, perform cyclic loading experiments under the same load sequence as previous experiments,and evaluate seismic resistance performance of the repaired steel bridge pier.2012-09-06T15:00:00ZAN APPROXlMATED CURVE HYSTERETIC SIMULATION MODEL FOR SEISMIC RESPONSE OF STEEL BRIDGE PIERSDANG, JiAOKI, Tetsuhikohttp://hdl.handle.net/11133/26762014-07-25T04:05:54Z2012-09-06T15:00:00Zタイトル: AN APPROXlMATED CURVE HYSTERETIC SIMULATION MODEL FOR SEISMIC RESPONSE OF STEEL BRIDGE PIERS
著者: DANG, Ji; AOKI, Tetsuhiko
抄録: In this paper,an approximated curve hysteretic model is proposed to predict the seismic response of steel piers under strong ground motion. Instead of multiple stright lines,a series of curves are adopted to descript the complicated force-displacement hysteretic relationship of steel piers. P-δ effect,hardening effect in unloading-reloading hysteretic loops,deterioration characters of steel columns are considered in this model by introducing hysteretic rules and identifying free parameters. To verify the accuracy of the proposed model,six static cyclic tests and eleven hybrid tests using three types of steel pier specimens are conducted under the six strong ground motion records. By comparing the results due to the hybrid tests and the simulation,the average difference between these two is clarified as 5% in maximum response displacement,22% in residual displacement and 3% in energy absorption.2012-09-06T15:00:00Z