初期超高層超建物柱梁接合部が保有する変形性能と接合部改良効果の検証

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タイトル別名
  • SEISMIC PERFORMANCE AND RETROFIT OF BEAM-TO-COLUMN CONNECTION FOR EARLY HIGH-RISE BUILDINGS
  • ショキ チョウコウソウ チョウタテモノ チュウリョウ セツゴウブ ガ ホユウスル ヘンケイ セイノウ ト セツゴウブ カイリョウ コウカ ノ ケンショウ

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This paper presents results of full-scale tests conducted to evaluate deformation capacity, failure mode and possible effective retrofit of welded beam-to-column connection adopted in moment frames for early high-rise buildings around 1970s. Test specimens are designed and fabricated to retrofit the moment connections in the 1970s by strengthening of the web connections and improvement of welding detail according to the latest practice. Loading tests are conducted by the cyclic loading protocol to simulate the response of frames subjected to long-period ground motions. The test results are compared with the results on original connections and the effectiveness of the strengthened web-joints on deformation capacity is revealed. The obtained capacity of specimens satisfied deformation demand predicted by numerical response analysis.

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