【摘要】 以高桩码头双轴对称桩基码头结构段为研究对象,建立空间有限元模型,采用振型分解反应谱法对水平地震作用横向、纵向输入进行了地震动力响应分析,对比分析了叉桩扭角变化对结构响应的影响,讨论了纵向斜桩对结构抗震性能的影响。计算结果表明:横向水平地震作用下,除桩轴力外,其结构的响应随着叉桩扭角的增大而增大;纵向水平地震作用下,桩轴力随扭角的增大而增大,其他结构响应则随扭角的增大而减小;纵向水平地震作用下结构的动力响应较大,增加纵向斜桩能更好的抵抗纵向水平地震荷载,但增加纵向斜桩其最大桩轴力响应将较无纵向斜桩时增加较多。更多还原

【Abstract】 Taken the symmetrical arrangement type of high-pile wharf as the research object,the space finite element model was established.With the mode-superposition response spectrum method,the dynamic response of the earthquake under the horizontal earthquake action was analyzed.The impact of torsion angle variation on the structural responses was compared,and the impact of longitudinal inclined piles on the structural seismic performance was discussed.The calculation results show that under the condition of transverse earthquake action,besides axial force of piles,the structural responses are increasing with the increase of torsion angle of fork piles.Under the condition of longitudinal earthquake action,the response of axial force of piles is increasing with the increase of torsion angle of fork piles.The structural dynamic responses are larger under the longitudinal earthquake action.Comparing with the values without adding piles,the maximum axial force of added piles is largely increased.更多还原