本研究為了探討耐火鋼側板補強式梁柱彎矩接頭受到高溫火害前後耐震能力之差異，製作三組尺寸相同的耐火鋼側板補強式梁柱接頭試體，所有試體的梁柱接頭區皆採用側板補強形式且材質為耐火鋼材，箱型柱與連接梁則採用普通鋼材，為了模擬耐火鋼側板補強式梁柱接頭受到高溫火害前後材質的變化，三組試體分別進行三種不同的溫度處理，並命名為未受火害之FR-SPL-R2-EXP(對照組)、受900℃火害後空氣冷卻之FR-SPL-A9-EXP以及受900℃火害後水中冷卻之FR-SPL-W9-EXP。三組試體分別進行相同試驗程序的反覆載重試驗，試驗結果顯示：FR-SPL-R2-EXP與FR-SPL-A9-EXP試體皆通過2010年AISC耐震規範的SMF梁柱接頭規定，雖然FR-SPL-W9-EXP試體於3.75%層間位移角時，在試體托梁與連接梁的續接銲道發生非預期之斷裂，但是透過本論文之研析後推測FR-SPL-W9-EXP試體的續接銲道若未發生斷裂，FR-SPL-W9-EXP試體應能通過2010年AISC耐震規範之規定。本論文亦依照耐火鋼側板補強式梁柱彎矩接頭試體的實際尺寸與材質之條件，建立FR-SPL-R2-SIM、FR-SPL-A9-SIM、FR-SPL-W9-SIM、FR-SPL-W8-SIM等四組三維非線性有限元素數值模型，以模擬反覆載重試驗之結果。

In order to investigate the seismic-resistance differences of the fire-resistant side-plate strengthening steel beam-to-column connections before and after high-temperature fire, this research fabricated three fire-resistant steel side-plate strengthening beam-to-column connection specimens with the same dimensions. The stub-beams of all three specimens were made of fire-resistant steel and were strengthened by side-plates. The box-columns and link-beams of all three specimens were made of normal structural steel. To simulate the material variations of the fire-resistant side-plate strengthening steel beam-to-column connections before and after high-temperature fire, the three specimens were subjected to three different temperature treatments respectively and were named as FR-SPL-R2-EXP, FR-SPL-A9-EXP and FR-SPL-W9-EXP. The three specimens were tested by the same beam-to-column cyclic loading procedures. The test results showed that the FR-SPL-R2-EXP and FR-SPL-A9-EXP specimens conformed to the SMF beam-to-column connection requirements of the 2010 AISC Seismic Provisions. For the FR-SPL-W9-EXP specimen, an unexpected fracture occurred at the continuing weld pass at the inter-story drift angle of 3.75%. Through detailed investigation, we could infer that the FR-SPL-W9-EXP specimen might meet the 2010 AISC Seismic Provisions. Besides, this thesis also developed the three-dimensional nonlinear finite-element numerical models for the three specimens called FR-SPL-R2-SIM, FR-SPL-A9-SIM, FR-SPL-W9-SIM, and FR-SPL-W8-SIM in accordance with real test conditions to simulate the three specimens under cyclic loading tests.

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