双柱式节段拼装桥墩抗震性能的影响因素分析

Analysis of factors influencing the seismic performance of double-column segmental assembled bridge piers

为了研究双柱式节段拼装桥墩抗震性能,了解桥墩在不同参数情况下的破坏情况,通过建立有限元模型,探究配箍率、轴压比、预应力度影响因素对节段拼装桥墩抗震性能的影响,分析结果得出:建议配箍率取值在1.16%~2.28%;轴压比取值在0.2~0.4;预应力度取值在0.2~0.4。

In order to study the seismic performance of double-column segmental assembled piers and to fully under-stand the damage and performance of piers under different parameter inputs,the finite element model is established to study the effects of parameters such as axial compression ratio and prestressing degree on the seismic performance of segmental assembled piers.The analysis results show that the recommended stirrup ratio is between 1.16%and 2.28%,the axial compression ratio is between 0.2 and 0.4,the prestressing degree is between 0.2 and 0.4.