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以江苏国华镇江港全直桩码头结构段为研究对象,针对全直桩码头的结构特点,基于《水运工程抗震设计规范》中的抗震计算方法,采用动力弹塑性分析方法和静力弹塑性分析方法,计算得到了码头结构的基底剪力—桩顶位移关系曲线、桩顶最大位移、塑性铰分布。结果表明,利用两种方法计算得到的基底剪力—桩顶位移曲线相关不明显;利用动力弹塑性方法得到的桩顶最大位移与利用静力弹塑性方法得到的性能点目标位移相差不大;两种方法分析得到的塑性铰位置分布相接近,即塑性铰主要分布在桩底和桩顶,并首先出现在陆侧桩底,然后向海侧发展,但利用静力弹塑性方法得到的塑性铰较多,分析结果偏保守。
Taking Zhenjiang Port Zhenjiang Port all straight pile wharf structure section as the research object, aiming at the structural characteristics of all straight piling wharf, based on the seismic calculation method in Code for Seismic Design of Waterway Engineering, dynamic elasto-plastic analysis method and static elasto-plasticity Analysis method, calculated the wharf structure of the base shear - pile displacement curve, the maximum displacement of the top, plastic hinge distribution. The results show that the correlation between the base shear force and the pile top displacement curve calculated by the two methods is insignificant. The maximum displacement of the pile top obtained by the dynamic elasto-plastic method is not significantly different from that obtained by the static elastoplastic method. The plastic hinges distributed by the two methods are close to each other, that is, the plastic hinges are mainly distributed at the pile bottom and the top of the pile. The plastic hinges firstly appear at the bottom of the pile on the land side and then develop toward the sea side. However, the plasticity obtained by the static elastoplastic method More hinges, partial conservative results.