预应力闸墩结构动力特性及响应分析

Dynamic characteristic and response analysis for prestressed pier

本文基于ABAQUS平台,以某水电站锚块式预应力闸墩为工程背景,建立有限元模型对闸墩结构进行动力特性及响应分析,得到结构自振频率和主振型规律,继而采用反应谱理论,分析结构在地震激励作用下位移和应力响应,总结出地震工况下其控制应力及产生部位,为工程设计提供理论指导。

In this paper,based on ABAQUS platform and taking anchor block prestressed pier of a hydropower station as the engineering background,a finite element model was established to analyze the dynamic characteristics and response of the pier structure,and the natural vibration frequency and main vibration pattern of the structure were obtained.Then,the response spectrum theory is used to analyze the displacement and stress response of the structure under earthquake excitation,and the controlling stress and its generating position under earthquake condition are summarized to provide theoretical guidance for engineering design.