現行之傳統型連接板接合鋼橋柱於地震力作用下非彈性變形通常發生在柱底，造成震後檢測及維修之困難，本文將介紹一創新之鋼橋柱設計，利用預選塑性區之概念，使非彈性變形集中於預先選定之區域，震後工程師將針對預選塑性區域進行檢測，以確定是否有破壞發生。
由同一系列之研究結果顯示，鋼橋柱底之破壞可以透過此設計方法，成功將非線性變形轉移至預選塑性區之位置，最後對於先前之研究結果做歸納與比較，並推導出更完善之設計方法與流程，並加以應用在不同形式之鋼橋橋墩上。

It is generally recognized that the inelastic deformation of steel bridge column usually emerges at the bottom of the column under seismic load. This usually caused the difficulty in inspecting and repairing the damage after earthquake. In this study, a new type of steel bridge column is proposed which is based on the concept of pre-selected plastic zone. In this design method, the inelastic deformation on the pre-selected zone. After the earthquake, the engineer is able to inspect the pre-selected zone to make sure whether there is carry damages occurred.
In previous studies, the new type of steel bridge column design has successfully controlled the plastic deformation to the pre-selected position with this arrangement, the energy is dissipated to the pre-selected energy-dissipating plate. After arranging and comparing the results of studies, it will be a detail design method and suggestions of energy dissipating plate on steel bridge columns.

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