To calculate the demand moment of piers in medium earthquake and the bending resistance ability we use the response spectrum method and the procedure which called xtract. Then calculate the ratio of seismic demand and capacity.
对3×30米、5×30米、3×20米、5×20米典型连续梁桥进行延性计算,本文运用反应谱法求桥墩中震地震需求,用xtract求桥墩抗弯能力,计算中震需求与抗弯能力的比值;通过大震激励下纤维梁单元的地震响应,在合理范围内调整配筋率。
参考来源 - 高烈度区钢筋混凝土桥墩延性设计与抗震能力评估·2,447,543篇论文数据，部分数据来源于NoteExpress
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