鋼結構韌性梁柱接頭雖可滿足結構韌性上的需求，但於地震過後，接頭塑性變形甚至挫曲形成塑性絞，以及結構的殘餘變形等，將會增加結構修復的困難與花費，因此本研究開發一新式自復位梁柱接頭，並有效地應用形狀記憶合金之超彈性特性於梁柱接頭中，使接頭於地震後可回復至原點，無殘留變形，並兼具消能之性能。
將形狀憶合金與碟型彈簧串聯組成自復位彈性系統，以較短的形狀記憶合金達到接頭塑性變形的要求。此外，為增加接頭強度以及消能性，同時不影響接頭自復位性能，本研究提出一非對稱摩擦消能系統，乃透過複數層鋼板摩擦面、螺栓孔大小及不同位置螺栓的軸力等參數，控制加載及卸載各階段的摩擦力，達到加載時摩擦力大於卸載摩擦力的非對稱摩擦遲滯迴圈，並將其應用於梁柱接頭中，與自復位彈性系統並聯，以滿足接頭所需的強度，本研究透過大小實驗以及實驗分析所得之主要結論如下。
於足尺梁柱接頭試驗中驗證了僅應用長度200mm形狀憶合金，可使梁深500mm、強度490Mpa等級的梁柱接頭，滿足層間變形達4%的變形要求，且強度將近80%梁標稱塑性彎矩，滿足法規要求且可應用於足尺寸之接合構件中。
非對稱摩擦消能系統實驗證明可透過改變螺栓軸力，進而調整加載及卸載時各階段所需之摩擦力大小，使其所貢獻的消能行為相較於傳統摩擦系統恆定的消能行為。此外，本研究基於各構件之材料試驗，推導柱梁接頭之力學模型以及強度之計算式，並與實驗結果進行比較與檢討。

To reduce the structural damages after a medium-large earthquake, a new type of steel beam-to-column connection with self-centering feature was proposed in the study. The connection effectively uses the superelastic effect of the shape memory alloys (SMA) to provide the self-centering behavior and to dissipate energy under the shaking of an earthquake. So the residual deformation would be mitigated and the cost for restoring, not only for the structure but also for the unfunctional period of the building would be reduced. The shape memory alloy rods are assembled with the disc springs in series to achieve larger elastic deformation with shorter SMA rods.
Besides, to increase the strength and the energy dissipation ability of the connection without affecting the self-centering performance, the asymmetric frictional energy dissipation system was developed in the study. By controlling the axial force of the bolt and the diameter of the bolt hole, the system can exhibit an asymmetrical hysteretic loop, the loading friction force will be larger than the unloading friction force.
The two systems were assembled in parallel and installed in a full scale beam-column connection specimen for performance evaluation tests. Six groups of static cyclic loading experiments were conducted. The experimental result shows stable hysteretic loop and self-centering behavior of each specimen. The tested drift angle reached 4% while the strength reached 80% of the full plastic moment of the beam. The mechanical model to evaluate the connection is also proposed in this study.

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