环向预应力钢丝绳加固桥墩有限元分析
Finite Element Analysis of Pier Reinforced with Circular Prestressed Steel Rope
孙敦华 1宋军 2雷欢 3朱俊4
作者信息
- 1. 安徽省交通控股集团有限公司,安徽 合肥 230092
- 2. 同济大学,上海 200092
- 3. 柳州欧维姆机械股份有限公司,广西 柳州 545005
- 4. 安徽省交通规划设计研究总院股份有限公司,安徽 合肥 230088
- 折叠
摘要
为了解预应力钢丝绳加固桥墩效果,文章采用Abaqus软件对实心、空心混凝土墩柱进行了加固模拟分析.研究表明,受钢丝绳与混凝土摩阻力影响,钢丝绳沿程出现预应力损失,张拉端向远端逐渐降低,混凝土径向、切向压应力则受钢丝绳拉力变化与间隔布置影响,在墩柱表面呈现不均匀分布,摩擦系数从0.05增至0.40,最大摩阻损失由 14.5%增至71.5%,应采取措施降低摩擦效应.
Abstract
In order to understand the reinforcement effect of prestressed steel rope on bridge pier,this paper uses Abaqus software to simulate the reinforcement of solid and hollow concrete pier columns.The research shows that due to the influence of the friction between the steel rope and the concrete,the prestress loss occurs along the steel rope,and the tension end gradually decreases to the far end;the radial and tangential compressive stresses of the concrete are affected by the change of the tension force of the steel rope and the spacing arrangement,showing uneven distribution on the surface of pier column;the friction coefficient increases from 0.05 to 0.40,and the maximum friction loss increases from 14.5%to 71.5%.Measures should be taken to reduce the friction effect.
关键词
环形预应力/钢丝绳/桥墩加固Key words
circular prestress/steel rope/pier reinforce-ment引用本文复制引用
出版年
2024
NETL
NSTL
万方数据