高架路混凝土立柱截面的耐久性分析

Durability Analysis of the Section about Concrete Column of the High-level Road

既有高架路混凝土立柱截面角区形式的选取 ,没有考虑其对截面耐久性的影响。依传质原理 ,建立了混凝土结构截面上CO2 扩散传质方程 ,并利用有限元方法作了混凝土截面上碳化深度分布的计算 ,以截面内钢筋脱钝时间为比较前提 ,探讨了常见的三种混凝土立柱截面角区形式(直角 ,圆角 ,斜角 )的截面耐久性能 。

When the corner forms of section on the existing concrete column of the high-level road were chosen, didn′t consider the effect on the durability of section. According to the principle of conducting mass, equation of diffusing conducting mass of CO 2 is set. The equation is solved by finite element. Based on the model of finite element, the section durability performance of common three sort corner form of section (right angle corner, circle corner, and inclined corner) is studied, and the design method of section on concrete structures is recommended.