拼装式双柱桥墩抗震能力的评估

Aseismic Capacity Assessment of the Assembly Double column Piers

采用三线型滞回模型，对拼装式双柱桥墩进行了弹塑性地震反应分析，并分别对常遇小震、中震及罕遇大震时的抗震能力进行了评估。计算结果表明，现有定型设计的拼装式双柱桥墩，能满足在设计烈度为７～９度地震区“小震不坏”、“中震可修”，以及在７～８度地震区“大震不倒”

The elasto plastic seismic response analysis of the assembly double column bridge piers which are simulated as a tri linear hysteretic model is performed in this paper.The aseismic capacity assessment of the piers is carried out for the Minor Earthquake,the Moderate Earthquake and the Major Earthquake.It is shown that these standard piers can meet the demands of “no damage in Minor Earthquakes”and “mendable in Moderate Earthquakes”when subjected 7 9 intensity degrees as well as “no crash in Major Earthquakes”when subject to 7 8 intensity degrees.