Taking the structural segment of an all-vertical-pile wharf in Jiangsu Province for example ,the lateral pushover analysis is made by SAP2000 ,the effects of different load patterns and different stiffness of pile foundation on the results of the pushover analysis are discussed ,and the relationship between base shear and top displacement ,the yield sequence and position of wharf structure and the internal force of main structural members are obtained .It is concluded that the re-sults of the analysis under three different load patterns have no obvious difference ;for the pile foundation of lateral bent , the maximum moment occurs at the bottom and top of the pile ,and the plastic hinges develop generally from the land side to sea side ;the increase of pile diameter can reduce the lateral displacement and increase the ultimate horizontal load of the wharf structure .%以江苏某全直桩码头结构段为例，采用 SAP2000软件对结构进行了横向静力弹塑性分析，讨论了不同水平加载模式、不同桩基刚度等因素对 Pushover 分析结果的影响，得到了基底剪力-顶点位移关系曲线、码头结构的屈服次序和位置及主要杆件内力等规律。结果表明：所选择的三种加载模式结构横向分析结果总体差别不大；横向排架桩基，最大弯矩发生在桩底和桩顶，塑性铰一般由陆侧向海侧发展；桩径的增大，可以减小结构的侧移，增大结构所能承担的极限水平荷载。
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