現行傳統連接板接合之鋼橋柱受地震力作用下，非彈性變形通常集中於柱底，容易造成柱底產生局部挫屈或銲道開裂；以傳統型連接板接合之梁柱接頭於地震作用下，非彈性變形亦集中於柱端，使柱端易產生局部挫屈或銲道開裂。本研究乃針對改良式消能連接板之軸向反復載重試驗，以模擬鋼橋柱及梁柱接頭連接板於地震下之受力行為，以改變槽孔配置及螺栓配置探討其強度、勁度與消能能力。
研究顯示：(1)消能區越大其累積能量之速度越快，但挫屈易發生較早，使其過早產生非線性變形進而造成強度下降，未必能累積更多能量。(2)在同樣的消能區大小下，將槽孔增長改變螺栓束制量並未提供較佳之耐震能力，係因為其面積折減率較大，使其過早產生非線性變形。

It is generally recognized that the inelastic deformation of steel bridges and the con-nections of beams and columns which use the conventional continuing plates usually concentrates at the end of columns under the earthquakes, which will easily cause local buckling and cracking of welds. This paper has conducted a cyclic load experiment of improved continuing plates to simulate the behavior of continuing plates under the earth-quakes. The parameters were the configuration of long-slotted holes and bolts. The strength, stiffness and the ability of energy dissipation.
The results indicated that：（1）The more longitudinal long-slotted holes are, the rapider rate of energy dissipating is, but the local buckling which causes inelastic defor-mation would occur much earlier. The quantity of energy dissipation might not be more than one which use the traditional continuing plate.（2）Continuing plates which have the same size of energy dissipation zone, to change the quantity of restraint by increasing the length of long-slotted holes would not provide the greater ability of energy dissipating due to the premature inelastic deformation.

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