水电站工作弧门预应力闸墩结构特性研究

Research On Stress Characteristics of Prestressed Pier of Hydropower Station Service Radial Gate

水电站工作弧门预应力闸墩具有孔口尺寸大、水推力大等特点。为改善其受力状态，确保泄洪消能安全，设计通常采有预应力锚固技术。本文在简要介绍闸墩预应力锚索设计的基础上，运用三维有限元法对其位移及应力分布规律进行了研究。给出了预应力闸墩的几个主要受力特征。

Prestressed pier of hydropower station service radial gate features large aperture dimension,high water thrust and so on. Prestressed anchor technology is usually used to improve the stress condition for safe performance of floed release and energy dissipation. On the basis of briefly introducingthe design of prestressed anchor line of pier, the paper analyzes the displacement and stress distributionpatterns by using three-dimension finite element method and several main stress characteristics of pre-stressed pier are presented.