桥梁预应力效应数值分析及程序实现  

Numerical Analysis and Program Realization of Bridge Pre-stressing Effect

作　　者：魏储银[1] 刘妍 

机构地区：[1]东莞市交业工程质量检测中心,广东东莞523125 [2]深圳市市政工程设计研究院有限公司,广东深圳518060

出　　处：《城市道桥与防洪》2012年第5期227-230,18-19,共4页Urban Roads Bridges & Flood Control

摘　　要：该文阐述了在桥梁平面杆系模型中添加预应力效应分析模块的数值方法。首先用导数点法描述预应力线形,其次把预应力钢索离散成连续的折线段并逐段计算预应力损失,最后把有效预应力等效成节点荷载施加在结构上。经编程计算验证该预应力数值分析方法正确可行,可为同行理解和应用相似的预应力分析程序作参考。This article sets forth the numerical methods of prestressing effect analysis module added in the plane linkage model of bridge, firstly uses the traverse point method to describe the prestressing linearity, then disperses the prestressed cable into the continuous line segment and computes the prestressing loss by segments, and finally applies the effective prestressing equivalent to nodal loads on the structure. The programming computation in the article validates that this prestressing numerical analysis method is correct and feasible, which can be referred for understanding and applying the similar prestressing analysisprogram.

关 键 词：预应力效应 导线点法 预应力损失 等效节点荷载 

分 类 号：U441.5[建筑科学—桥梁与隧道工程]