【摘要】 针对以往大都以单墩为模型进行桥墩抗震性能分析的问题,以墩—桩整体结构为计算模型,考虑动水压力的影响,分别采用增量动力分析方法和静力弹塑性分析方法分析了某跨海大桥的整体抗震性能,得到了桥梁结构的基底剪力—墩顶位移关系曲线,并以增量动力分析方法的结果为基准,研究了静力弹塑性分析方法用于墩—桩结构抗震设计的可靠程度。结果表明,静力弹塑性分析方法可准确、简明地评估桥梁结构的抗震性能,可满足工程要求。更多还原

【Abstract】 Aiming at the phenomenon that the majority of previous studies on the pushover analysis are based on the single pier model,the authors adopt the overall structure of the pier-pile calculation model and consider the impact of hydrodynamic pressure on a bridge to study the problem.The IDA method and Pushover method are used to calculate the base shear-pier top displacement curve of the structure.Using the result of the IDA method as a criterion,this paper applies a case of a cross-sea bridge to study the reliability of the Pushover method.The results show that Pushover method can simply and accurately assess the seismic performance of bridge structure and meet the requirement of project.更多还原